Asce Ewrg Presentation
•
1 like•539 views
This document summarizes a study conducted by Clean Water Services to better understand stream erosion in the cohesive soils of the Tualatin River watershed. The study aims to (1) measure the erodibility and critical shear stress of local soils, (2) model how changes in flow may impact erosion, and (3) determine how vegetated corridors and other factors influence bank stability. The study involves testing soils from 50 sites, assessing 300 additional sites geomorphically, and analyzing the effects of 10 native riparian species on bank reinforcement. Preliminary findings suggest a wide range in soil erodibility and that factors like floodplains, vegetation corridors, and urbanization significantly impact stream health. The results will help inform
Report
Share
Report
Share
![Outline ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Recommended
IRJET- Open Channel Flow Characteristics using Gabion Weir
This document summarizes a study that investigated open channel flow characteristics using gabion weirs. Laboratory experiments were conducted using a gabion weir and solid weir in a horizontal flume. The gabion weir was constructed using a wire mesh and filled with gravel, while the solid weir had an impermeable concrete structure. Discharge was measured over a range of water depths, slopes, and gravel sizes for both weir types. The results for the gabion weir deviated significantly from equations for solid weirs. Regression analysis was used to develop new discharge equations for gabion weirs based on the experimental data. The study aims to better understand flow interactions with gabion weirs and develop design methods for using
Siltflux Leaflet
Leaflet from the workshop on Sediment Fluxes in Irish Rivers (Siltflux Workshop) - 28/10/14, UCD, Dublin 4
DSD-INT 2019 Using D-Water Quality & D-Flow FM to model cohesive sediment tra...
Presentation by Sienna White, Stanford University, USA, at the Delft3D - User Days (Day 4: Water quality and ecology), during Delft Software Days - Edition 2019. Thursday, 14 November 2019, Delft.
WATER QUALITY MODELING DR. YANTI
PRESENTASI WATER QUALITY MODELING DR. YANTI (QUEEN SLAND UNIVERSITY) DI JURUSAN PENDIDIKAN GEOGRAFI UNY
Assessment of CGP Risk Level 3 Sites
1) The document discusses requirements for construction sites categorized as Risk Level 3 under the statewide general permit, including numeric effluent limitations, extensive inspection and monitoring, and the potential need for advanced treatment systems.
2) Modeling was used to assess the performance of best management practices on different soil types (sand, silt, clay) and slopes over 1 and 2 year construction projects.
3) The modeling results showed that sediment control measures like silt fences and sediment basins are not effective alone on silt and silty loam sites and advanced treatment will likely be required to meet permit requirements, especially on clay sites.
DSD-INT 2014 - Delft3D Users Meeting - Keynote Lecture 2014 - Dynamic Deltas,...
This years’ keynote speaker of the Delft3D Users Meeting is Prof. Rudy L Slingerland, Pennsylvania State University, USA.
For more than 37 years, Prof. Rudy L. Slingerland of the Pennsylvania State University, USA, has been active as a scientist, educator and academic leader. He has held numerous positions within the University including head of the Department of Geosciences. His research group currently studies the evolution of morphodynamic systems, including tectonically-driven landscapes, deltas, rivers and shallow marine shelves by coupling theory with observations in the field and subsurface. The group’s ultimate goal is to develop predictive theories for the behavior of these systems and the record of their deposits. He was also recognized with the 2012 G. K. Gilbert Award for Geomorphology from the American Geophysical Union (AGU), which honors a scientist who has made a significant contribution to the field of earth and planetary surface processes. In 2013, he was elected a Fellow of the AGU.
In his Keynote Lecture “Delta Dynamics using Delft3D” at the Delft3D Users Meeting on Tuesday, November 4, Prof. Rudy L. Slingerland will describe what he has learned about delta dynamics from Delft3D modeling studies. He will talk about the latest open source advances and will share his ideas for further improvements. This Keynote will be the start of an open discussion among engineers, geomorphologists, geologists and software developers to further collaborate in the development and research of morphodynamic systems worldwide.
Suspended Sediment Measurements in Irish Rivers (summary)
This document summarizes suspended sediment measurements from several Irish rivers. It discusses suspended sediment concentrations and fluxes found in Irish rivers based on published data. It also describes suspended sediment monitoring conducted as part of the Siltflux project on several catchments, finding suspended sediment concentrations up to 900 mg/l and most sediment being transported during high flow periods in winter months. Suspended sediment characteristics and impacts are also briefly discussed.
Assessment of reservoir sedimentation by remote sensing
This document discusses using remote sensing to assess sedimentation in reservoirs. It describes how conventional hydrographic surveys are costly and tedious, while remote sensing techniques offer a modern alternative. Satellite remote sensing can be used to estimate storage capacity loss in reservoirs due to sedimentation. The methodology involves preprocessing satellite data, identifying water pixels, and computing reservoir capacity. Water pixels are identified using a modified normalized difference water index method. Capacity between elevations is then computed using a prismoidal formula and water spread areas at corresponding elevations.
Recommended
IRJET- Open Channel Flow Characteristics using Gabion Weir
This document summarizes a study that investigated open channel flow characteristics using gabion weirs. Laboratory experiments were conducted using a gabion weir and solid weir in a horizontal flume. The gabion weir was constructed using a wire mesh and filled with gravel, while the solid weir had an impermeable concrete structure. Discharge was measured over a range of water depths, slopes, and gravel sizes for both weir types. The results for the gabion weir deviated significantly from equations for solid weirs. Regression analysis was used to develop new discharge equations for gabion weirs based on the experimental data. The study aims to better understand flow interactions with gabion weirs and develop design methods for using
Siltflux Leaflet
Leaflet from the workshop on Sediment Fluxes in Irish Rivers (Siltflux Workshop) - 28/10/14, UCD, Dublin 4
DSD-INT 2019 Using D-Water Quality & D-Flow FM to model cohesive sediment tra...
Presentation by Sienna White, Stanford University, USA, at the Delft3D - User Days (Day 4: Water quality and ecology), during Delft Software Days - Edition 2019. Thursday, 14 November 2019, Delft.
WATER QUALITY MODELING DR. YANTI
PRESENTASI WATER QUALITY MODELING DR. YANTI (QUEEN SLAND UNIVERSITY) DI JURUSAN PENDIDIKAN GEOGRAFI UNY
Assessment of CGP Risk Level 3 Sites
1) The document discusses requirements for construction sites categorized as Risk Level 3 under the statewide general permit, including numeric effluent limitations, extensive inspection and monitoring, and the potential need for advanced treatment systems.
2) Modeling was used to assess the performance of best management practices on different soil types (sand, silt, clay) and slopes over 1 and 2 year construction projects.
3) The modeling results showed that sediment control measures like silt fences and sediment basins are not effective alone on silt and silty loam sites and advanced treatment will likely be required to meet permit requirements, especially on clay sites.
DSD-INT 2014 - Delft3D Users Meeting - Keynote Lecture 2014 - Dynamic Deltas,...
This years’ keynote speaker of the Delft3D Users Meeting is Prof. Rudy L Slingerland, Pennsylvania State University, USA.
For more than 37 years, Prof. Rudy L. Slingerland of the Pennsylvania State University, USA, has been active as a scientist, educator and academic leader. He has held numerous positions within the University including head of the Department of Geosciences. His research group currently studies the evolution of morphodynamic systems, including tectonically-driven landscapes, deltas, rivers and shallow marine shelves by coupling theory with observations in the field and subsurface. The group’s ultimate goal is to develop predictive theories for the behavior of these systems and the record of their deposits. He was also recognized with the 2012 G. K. Gilbert Award for Geomorphology from the American Geophysical Union (AGU), which honors a scientist who has made a significant contribution to the field of earth and planetary surface processes. In 2013, he was elected a Fellow of the AGU.
In his Keynote Lecture “Delta Dynamics using Delft3D” at the Delft3D Users Meeting on Tuesday, November 4, Prof. Rudy L. Slingerland will describe what he has learned about delta dynamics from Delft3D modeling studies. He will talk about the latest open source advances and will share his ideas for further improvements. This Keynote will be the start of an open discussion among engineers, geomorphologists, geologists and software developers to further collaborate in the development and research of morphodynamic systems worldwide.
Suspended Sediment Measurements in Irish Rivers (summary)
This document summarizes suspended sediment measurements from several Irish rivers. It discusses suspended sediment concentrations and fluxes found in Irish rivers based on published data. It also describes suspended sediment monitoring conducted as part of the Siltflux project on several catchments, finding suspended sediment concentrations up to 900 mg/l and most sediment being transported during high flow periods in winter months. Suspended sediment characteristics and impacts are also briefly discussed.
Assessment of reservoir sedimentation by remote sensing
This document discusses using remote sensing to assess sedimentation in reservoirs. It describes how conventional hydrographic surveys are costly and tedious, while remote sensing techniques offer a modern alternative. Satellite remote sensing can be used to estimate storage capacity loss in reservoirs due to sedimentation. The methodology involves preprocessing satellite data, identifying water pixels, and computing reservoir capacity. Water pixels are identified using a modified normalized difference water index method. Capacity between elevations is then computed using a prismoidal formula and water spread areas at corresponding elevations.
Improved Assessment of Nitrogen and Phosphorus Fate and Transport for Irrigat...
Improved Assessment of Nitrogen and Phosphorus Fate and Transport for Irrigat...National Institute of Food and Agriculture
This project aims to 1) enhance the SWAT model to better simulate nitrogen and phosphorus transport in irrigated agricultural watersheds, 2) improve understanding of processes governing nutrient movement and storage, and 3) assess remediation strategies for nutrient contamination. Researchers developed a new modeling tool linking SWAT, MODFLOW, and RT3D to simulate surface and groundwater processes. This tool is being applied to three watersheds and its results will help identify effective best management practices for reducing nutrient loads.DSD-INT 2016 Assessment of hydrologic alterations using floodplain connectivi...
Presentation by Mark Stone (University of New Mexico) at the Delft3D User Days, during Delft Software Days 2016. Tuesday 1 November 2016, Delft.
DSD-INT 2015 - The future of computer modeling of coastal wetland - maselhe
The document summarizes the modeling approach and results of a team effort to develop an integrated modeling system for coastal Louisiana. The team used several models linked together to simulate hydrodynamics, morphodynamics, nutrient dynamics, and vegetation changes over long time periods. Validation showed the models reasonably represented water levels, salinity, sediment changes and more. Production runs examined scenarios with and without sediment diversions. The diversions led to increased land building and changes in water quality and vegetation over 50 years. The modeling effort aimed to improve understanding of coastal processes and inform restoration planning.
6_SF2C_JieLiu
This document examines the sensitivity of mixing in the Fraser River plume to external forcing factors like tides and winds using a three-dimensional numerical model. It describes 4 model runs: run 1 with only the river, run 2 adding tides, run 3 adding winds, and run 4 adding both tides and winds. The results show that winds have a greater impact on vertical mixing south of the river mouth compared to tides, and that near-field mixing extends about 12 km from the river mouth. Future work will investigate mixing under different river flow conditions and quantify the transport of water and freshwater by each forcing factor.
TobyTucker_Thesis_Final
This thesis examines models that predict the onshore propagation of sand bars during periods of low wave energy. The author analyzed sand bar data from Narrabeen-Collaroy Beach in Australia over seven recovery periods spanning 10 years. Three models - Plant et al. (2006), Splinter et al. (2011), and ShoreFor (Stokes et al., 2015) - were used to predict sand bar position and variability during the recovery periods. The Plant et al. model performed best at predicting bar position, while the ShoreFor model performed best at predicting bar variability. This suggests bar position and variability are not dependent on each other.
Stressors, Linkages, Progress, and Lessons Learned from Basin-Wide Planning a...
Stressors, Linkages, Progress, and Lessons Learned from
Basin-Wide Planning and Implementation for Water Quality and Quantity Restoration and Protection
• Basin Context
• Water Supply
• Water Quality
• 2030 Vision
LGMC_Liu_Allen_OS20160218
1) The study modifies the geometry of the Fraser River in a numerical ocean model to improve simulations of tides and the Fraser River plume.
2) Extending and deepening the river channel generated stronger cross-strait surface currents that better matched observations, and tidal amplitudes in the estuary corresponded well with measurements.
3) Reducing vertical mixing parameters, such as eddy viscosity and diffusivity, produced weaker along-strait flow and surface current patterns closer to drifter data, further improving the model results.
The State of Our Groundwater
This document provides an overview of groundwater basics and factors influencing groundwater quality and quantity in Taylor County, Wisconsin. It discusses watersheds, wellhead protection, approaches to addressing groundwater issues from both a bottom-up and top-down perspective, and Taylor County's drinking water education and testing program. Key points include that Taylor County has taken a bottom-up approach focusing on local groundwater data, and that top-down factors like geology, land use, and precipitation influence groundwater test results showing hazards like arsenic, iron, and manganese in some wells.
DSD-INT 2017 Biogeomorphodynamics of rivers, estuaries and their floodplains ...
Presentation by Maarten Kleinhans, University of Utrecht, Netherlands, at the Delft3D - User Days (Day 2: Sediment transport and morphology), during Delft Software Days - Edition 2017. Tuesday, 31 October 2017, Delft.
Using sea-floor morphometrics to constrain stratigraphic models of sinuous su...
Constructing geologically accurate reservoir models of deep-water strata is challenging due to the reliance
on incomplete or limited resolution datasets. Connecting areas of high-certainty across areas where
data is sparse or non-existent (e.g., between wellbores) is difficult and requires numerous interpretations
and assumptions. In this study, morphometric data from the Lucia Chica Channel System, offshore California,
provides high-resolution 3-D information that is used to constrain correlation and characterization
of ancient submarine channel fill deposits.
DSD-INT 2017 Long-term morphodynamics of muddy backbarrier basins - Canestrelli
Presentation by Alberto Canestrelli, University of Florida, USA, at the Delft3D - User Days (Day 2: Sediment transport and morphology), during Delft Software Days - Edition 2017. Tuesday, 31 October 2017, Delft.
DeerCreekReport
The document summarizes surveys of Deer Creek's floodplain and side channels conducted by University of Oregon students before implementation of a floodplain enhancement project. The surveys found a low amount of activated secondary channels and small/medium woody debris during spring. Future surveys after adding large woody debris to Deer Creek will assess whether the project improved water quality and salmonid habitat. The project aims to make Deer Creek's floodplain slower, colder, and more diverse to enhance habitat for Chinook salmon and bull trout.
Siltflux workshop 1: Sediment Research Teagasc- Daire Ó hUallacháin
Siltflux workshop 1: Sediment Research Teagasc- Daire Ó hUallacháinEnvironmental Protection Agency, Ireland
This document summarizes research on sediment flux and provenance being conducted by Teagasc and collaborators. The research aims to quantify sediment delivery and yield in agricultural catchments, validate methods to measure turbidity out of stream, examine event-scale sediment responses, and fingerprint sediment sources. Preliminary results show inter-annual variability in sediment yield not solely explained by rainfall/discharge. Sediment fingerprinting identified three main sources - channel banks, fields, and roads. Fingerprinting results showed the median contribution of each source to sediment sinks. The research could inform mitigation measures, agricultural and environmental policies, and sustainable land use management for freshwater pearl mussel conservation.DSD-INT 2017 A stroll through the European marine data landscape the role of ...
Presentation by Belén Martín Míguez (EMODnet) at the Symposium Earth Observation and Data Science, during Delft Software Days - Edition 2017. Friday, 3 November 2017, Delft.
DSD-INT 2019 Fine sediments - transport in suspension, storage and supply - F...
The transport of fine sediments in rivers is governed by complex interactions between sediment supply from basins, in-channel storage, and lateral storage in floodplains and off-channel areas. Experiments and modeling were used to investigate how sediment transport dynamics are influenced by the relative proportions of proximal in-channel sediments and distal incoming sediments, resulting in different types of hysteresis loops. Additional work examined how lateral embayments and their geometry affect hydrodynamics and sediment trapping, with higher trapping efficiencies found at intermediate discharges. Unsteady flows were shown to potentially re-mobilize sediments depending on embayment dimensions.
Chapter10
This document summarizes information about aquifer tests, which involve pumping wells and measuring water level responses to determine aquifer properties and well capacity. Key points:
- Aquifer tests typically involve constant rate pumping of a well for 1-30 days while measuring water level changes to evaluate hydraulic properties.
- Tests can determine if there is sufficient groundwater for a proposed use, with important metrics being drawdown and how water levels vary over time and with distance from the pumped well.
- Test results indicate aquifer characteristics like transmissivity and storage, and can reveal the presence of boundaries like impermeable rock that distort the cone of depression.
Final Coastal Presentation
This document analyzes the relationship between rainfall and turbidity levels in Elliot Bay near Seattle, Washington. Cross-covariance analysis found a significant positive correlation between daily rainfall and top turbidity levels with lags of 3 days, -1 year, 25 days, and 40 days, suggesting urban runoff impacts turbidity. No significant correlation was found between rainfall and bottom turbidity levels. The results support the hypothesis of a positive correlation between rainfall and top turbidity within 3 days but are uncertain due to potential calibration issues with the turbidity sensors and complexity of turbidity drivers. More research is needed to better understand turbidity generation locations and mechanisms impacting both top and bottom turbidity in Elliot Bay.
SubmergedAquaticVegetation
This document examines the relationship between shoreline characteristics and submerged aquatic vegetation (SAV). It finds that natural shorelines have more gradual slopes than hardened shorelines. SAV presence and density are higher adjacent to natural shorelines compared to hardened shorelines. Specifically, for natural shorelines SAV presence increases with greater shoreline length at shallower depths, and SAV density is higher closer to shore at shallower depths. For bulkhead shorelines, SAV presence relates to shoreline length and depth similarly as natural shorelines. The findings provide insights into how different shoreline types impact nearshore environments and SAV.
Stream Buffers
Stream Buffers are designed to filter pollutants from runoff through filtration, biological uptake, and attenuation within a surface distance between the pollution source and receiving water. Setbacks establish a safety zone but do not remove pollutants. Most research shows the "big three" pollutants - phosphorus, nitrogen, and sediments - are removed within buffers less than 100 feet, with diminishing returns for wider buffers. Buffer widths can be reduced with proper stormwater management and redevelopment. Wildlife buffers are better addressed at the project level than generically. Maryland examples include 100-foot buffers for waters and 25-foot buffers for wetlands.
A framework for prioritisation of barriers to migration across spatial scales...
A framework for prioritisation of barriers to migration across spatial scales...Scottish Fisheries Co Ordination Centre
1. The study develops a framework to prioritize barriers to fish migration across scales by integrating habitat quality and connectivity models. This is an improvement over previous approaches that assumed all habitat was of equal value.
2. A sensitivity analysis found that reducing the passability of "passable barriers" by just 3% could match their impact on connectivity to that of fully impassable barriers across Scotland. This suggests partial barriers could significantly impact connectivity.
3. The framework provides barrier prioritization lists that can inform barrier removal at local and national levels in Scotland, though limitations include incomplete barrier data and uncertainty around passability of passable barriers. Tools are being developed to allow interactive exploration of the results.Poster_phd_symp_A0size
Open channel confluences are where rivers and canals meet. They are complex with variable flow patterns that can cause flooding, scouring, and sediment accumulation. The document presents a conceptual model of a 90-degree asymmetrical confluence with rectangular channels to systematically study key parameters like discharge ratio. Laboratory experiments are conducted using measurement techniques like ADV and LSSPIV to analyze velocities and turbulence. Numerical modeling is also used to efficiently study parameters and provide additional data for validation. The overall aim is to improve understanding of confluence hydrodynamics to help address engineering issues.
10.1080@09715010.2019.1570359 3
The document describes a study that investigated the depth-wise profiles of velocity and turbulence parameters in the proximity of a mid-channel bar using experimental and computational fluid dynamics (CFD) modeling methods. Velocity measurements were taken at various depths and locations near the mid-channel bar using an acoustic Doppler velocimeter (ADV). The study found changes in the velocity and turbulence profiles due to interactions between the fluid flow and the mid-channel bar. CFD modeling with the Reynolds stress model was also used to validate the experimental results.
More Related Content
What's hot
Improved Assessment of Nitrogen and Phosphorus Fate and Transport for Irrigat...
Improved Assessment of Nitrogen and Phosphorus Fate and Transport for Irrigat...National Institute of Food and Agriculture
This project aims to 1) enhance the SWAT model to better simulate nitrogen and phosphorus transport in irrigated agricultural watersheds, 2) improve understanding of processes governing nutrient movement and storage, and 3) assess remediation strategies for nutrient contamination. Researchers developed a new modeling tool linking SWAT, MODFLOW, and RT3D to simulate surface and groundwater processes. This tool is being applied to three watersheds and its results will help identify effective best management practices for reducing nutrient loads.DSD-INT 2016 Assessment of hydrologic alterations using floodplain connectivi...
Presentation by Mark Stone (University of New Mexico) at the Delft3D User Days, during Delft Software Days 2016. Tuesday 1 November 2016, Delft.
DSD-INT 2015 - The future of computer modeling of coastal wetland - maselhe
The document summarizes the modeling approach and results of a team effort to develop an integrated modeling system for coastal Louisiana. The team used several models linked together to simulate hydrodynamics, morphodynamics, nutrient dynamics, and vegetation changes over long time periods. Validation showed the models reasonably represented water levels, salinity, sediment changes and more. Production runs examined scenarios with and without sediment diversions. The diversions led to increased land building and changes in water quality and vegetation over 50 years. The modeling effort aimed to improve understanding of coastal processes and inform restoration planning.
6_SF2C_JieLiu
This document examines the sensitivity of mixing in the Fraser River plume to external forcing factors like tides and winds using a three-dimensional numerical model. It describes 4 model runs: run 1 with only the river, run 2 adding tides, run 3 adding winds, and run 4 adding both tides and winds. The results show that winds have a greater impact on vertical mixing south of the river mouth compared to tides, and that near-field mixing extends about 12 km from the river mouth. Future work will investigate mixing under different river flow conditions and quantify the transport of water and freshwater by each forcing factor.
TobyTucker_Thesis_Final
This thesis examines models that predict the onshore propagation of sand bars during periods of low wave energy. The author analyzed sand bar data from Narrabeen-Collaroy Beach in Australia over seven recovery periods spanning 10 years. Three models - Plant et al. (2006), Splinter et al. (2011), and ShoreFor (Stokes et al., 2015) - were used to predict sand bar position and variability during the recovery periods. The Plant et al. model performed best at predicting bar position, while the ShoreFor model performed best at predicting bar variability. This suggests bar position and variability are not dependent on each other.
Stressors, Linkages, Progress, and Lessons Learned from Basin-Wide Planning a...
Stressors, Linkages, Progress, and Lessons Learned from
Basin-Wide Planning and Implementation for Water Quality and Quantity Restoration and Protection
• Basin Context
• Water Supply
• Water Quality
• 2030 Vision
LGMC_Liu_Allen_OS20160218
1) The study modifies the geometry of the Fraser River in a numerical ocean model to improve simulations of tides and the Fraser River plume.
2) Extending and deepening the river channel generated stronger cross-strait surface currents that better matched observations, and tidal amplitudes in the estuary corresponded well with measurements.
3) Reducing vertical mixing parameters, such as eddy viscosity and diffusivity, produced weaker along-strait flow and surface current patterns closer to drifter data, further improving the model results.
The State of Our Groundwater
This document provides an overview of groundwater basics and factors influencing groundwater quality and quantity in Taylor County, Wisconsin. It discusses watersheds, wellhead protection, approaches to addressing groundwater issues from both a bottom-up and top-down perspective, and Taylor County's drinking water education and testing program. Key points include that Taylor County has taken a bottom-up approach focusing on local groundwater data, and that top-down factors like geology, land use, and precipitation influence groundwater test results showing hazards like arsenic, iron, and manganese in some wells.
DSD-INT 2017 Biogeomorphodynamics of rivers, estuaries and their floodplains ...
Presentation by Maarten Kleinhans, University of Utrecht, Netherlands, at the Delft3D - User Days (Day 2: Sediment transport and morphology), during Delft Software Days - Edition 2017. Tuesday, 31 October 2017, Delft.
Using sea-floor morphometrics to constrain stratigraphic models of sinuous su...
Constructing geologically accurate reservoir models of deep-water strata is challenging due to the reliance
on incomplete or limited resolution datasets. Connecting areas of high-certainty across areas where
data is sparse or non-existent (e.g., between wellbores) is difficult and requires numerous interpretations
and assumptions. In this study, morphometric data from the Lucia Chica Channel System, offshore California,
provides high-resolution 3-D information that is used to constrain correlation and characterization
of ancient submarine channel fill deposits.
DSD-INT 2017 Long-term morphodynamics of muddy backbarrier basins - Canestrelli
Presentation by Alberto Canestrelli, University of Florida, USA, at the Delft3D - User Days (Day 2: Sediment transport and morphology), during Delft Software Days - Edition 2017. Tuesday, 31 October 2017, Delft.
DeerCreekReport
The document summarizes surveys of Deer Creek's floodplain and side channels conducted by University of Oregon students before implementation of a floodplain enhancement project. The surveys found a low amount of activated secondary channels and small/medium woody debris during spring. Future surveys after adding large woody debris to Deer Creek will assess whether the project improved water quality and salmonid habitat. The project aims to make Deer Creek's floodplain slower, colder, and more diverse to enhance habitat for Chinook salmon and bull trout.
Siltflux workshop 1: Sediment Research Teagasc- Daire Ó hUallacháin
Siltflux workshop 1: Sediment Research Teagasc- Daire Ó hUallacháinEnvironmental Protection Agency, Ireland
This document summarizes research on sediment flux and provenance being conducted by Teagasc and collaborators. The research aims to quantify sediment delivery and yield in agricultural catchments, validate methods to measure turbidity out of stream, examine event-scale sediment responses, and fingerprint sediment sources. Preliminary results show inter-annual variability in sediment yield not solely explained by rainfall/discharge. Sediment fingerprinting identified three main sources - channel banks, fields, and roads. Fingerprinting results showed the median contribution of each source to sediment sinks. The research could inform mitigation measures, agricultural and environmental policies, and sustainable land use management for freshwater pearl mussel conservation.DSD-INT 2017 A stroll through the European marine data landscape the role of ...
Presentation by Belén Martín Míguez (EMODnet) at the Symposium Earth Observation and Data Science, during Delft Software Days - Edition 2017. Friday, 3 November 2017, Delft.
DSD-INT 2019 Fine sediments - transport in suspension, storage and supply - F...
The transport of fine sediments in rivers is governed by complex interactions between sediment supply from basins, in-channel storage, and lateral storage in floodplains and off-channel areas. Experiments and modeling were used to investigate how sediment transport dynamics are influenced by the relative proportions of proximal in-channel sediments and distal incoming sediments, resulting in different types of hysteresis loops. Additional work examined how lateral embayments and their geometry affect hydrodynamics and sediment trapping, with higher trapping efficiencies found at intermediate discharges. Unsteady flows were shown to potentially re-mobilize sediments depending on embayment dimensions.
Chapter10
This document summarizes information about aquifer tests, which involve pumping wells and measuring water level responses to determine aquifer properties and well capacity. Key points:
- Aquifer tests typically involve constant rate pumping of a well for 1-30 days while measuring water level changes to evaluate hydraulic properties.
- Tests can determine if there is sufficient groundwater for a proposed use, with important metrics being drawdown and how water levels vary over time and with distance from the pumped well.
- Test results indicate aquifer characteristics like transmissivity and storage, and can reveal the presence of boundaries like impermeable rock that distort the cone of depression.
Final Coastal Presentation
This document analyzes the relationship between rainfall and turbidity levels in Elliot Bay near Seattle, Washington. Cross-covariance analysis found a significant positive correlation between daily rainfall and top turbidity levels with lags of 3 days, -1 year, 25 days, and 40 days, suggesting urban runoff impacts turbidity. No significant correlation was found between rainfall and bottom turbidity levels. The results support the hypothesis of a positive correlation between rainfall and top turbidity within 3 days but are uncertain due to potential calibration issues with the turbidity sensors and complexity of turbidity drivers. More research is needed to better understand turbidity generation locations and mechanisms impacting both top and bottom turbidity in Elliot Bay.
SubmergedAquaticVegetation
This document examines the relationship between shoreline characteristics and submerged aquatic vegetation (SAV). It finds that natural shorelines have more gradual slopes than hardened shorelines. SAV presence and density are higher adjacent to natural shorelines compared to hardened shorelines. Specifically, for natural shorelines SAV presence increases with greater shoreline length at shallower depths, and SAV density is higher closer to shore at shallower depths. For bulkhead shorelines, SAV presence relates to shoreline length and depth similarly as natural shorelines. The findings provide insights into how different shoreline types impact nearshore environments and SAV.
Stream Buffers
Stream Buffers are designed to filter pollutants from runoff through filtration, biological uptake, and attenuation within a surface distance between the pollution source and receiving water. Setbacks establish a safety zone but do not remove pollutants. Most research shows the "big three" pollutants - phosphorus, nitrogen, and sediments - are removed within buffers less than 100 feet, with diminishing returns for wider buffers. Buffer widths can be reduced with proper stormwater management and redevelopment. Wildlife buffers are better addressed at the project level than generically. Maryland examples include 100-foot buffers for waters and 25-foot buffers for wetlands.
A framework for prioritisation of barriers to migration across spatial scales...
A framework for prioritisation of barriers to migration across spatial scales...Scottish Fisheries Co Ordination Centre
1. The study develops a framework to prioritize barriers to fish migration across scales by integrating habitat quality and connectivity models. This is an improvement over previous approaches that assumed all habitat was of equal value.
2. A sensitivity analysis found that reducing the passability of "passable barriers" by just 3% could match their impact on connectivity to that of fully impassable barriers across Scotland. This suggests partial barriers could significantly impact connectivity.
3. The framework provides barrier prioritization lists that can inform barrier removal at local and national levels in Scotland, though limitations include incomplete barrier data and uncertainty around passability of passable barriers. Tools are being developed to allow interactive exploration of the results.What's hot (20)
Improved Assessment of Nitrogen and Phosphorus Fate and Transport for Irrigat...
Improved Assessment of Nitrogen and Phosphorus Fate and Transport for Irrigat...
DSD-INT 2016 Assessment of hydrologic alterations using floodplain connectivi...
DSD-INT 2016 Assessment of hydrologic alterations using floodplain connectivi...
DSD-INT 2015 - The future of computer modeling of coastal wetland - maselhe
DSD-INT 2015 - The future of computer modeling of coastal wetland - maselhe
Stressors, Linkages, Progress, and Lessons Learned from Basin-Wide Planning a...
Stressors, Linkages, Progress, and Lessons Learned from Basin-Wide Planning a...
DSD-INT 2017 Biogeomorphodynamics of rivers, estuaries and their floodplains ...
DSD-INT 2017 Biogeomorphodynamics of rivers, estuaries and their floodplains ...
Using sea-floor morphometrics to constrain stratigraphic models of sinuous su...
Using sea-floor morphometrics to constrain stratigraphic models of sinuous su...
DSD-INT 2017 Long-term morphodynamics of muddy backbarrier basins - Canestrelli
DSD-INT 2017 Long-term morphodynamics of muddy backbarrier basins - Canestrelli
Siltflux workshop 1: Sediment Research Teagasc- Daire Ó hUallacháin
Siltflux workshop 1: Sediment Research Teagasc- Daire Ó hUallacháin
DSD-INT 2017 A stroll through the European marine data landscape the role of ...
DSD-INT 2017 A stroll through the European marine data landscape the role of ...
DSD-INT 2019 Fine sediments - transport in suspension, storage and supply - F...
DSD-INT 2019 Fine sediments - transport in suspension, storage and supply - F...
A framework for prioritisation of barriers to migration across spatial scales...
A framework for prioritisation of barriers to migration across spatial scales...
Similar to Asce Ewrg Presentation
Poster_phd_symp_A0size
Open channel confluences are where rivers and canals meet. They are complex with variable flow patterns that can cause flooding, scouring, and sediment accumulation. The document presents a conceptual model of a 90-degree asymmetrical confluence with rectangular channels to systematically study key parameters like discharge ratio. Laboratory experiments are conducted using measurement techniques like ADV and LSSPIV to analyze velocities and turbulence. Numerical modeling is also used to efficiently study parameters and provide additional data for validation. The overall aim is to improve understanding of confluence hydrodynamics to help address engineering issues.
10.1080@09715010.2019.1570359 3
The document describes a study that investigated the depth-wise profiles of velocity and turbulence parameters in the proximity of a mid-channel bar using experimental and computational fluid dynamics (CFD) modeling methods. Velocity measurements were taken at various depths and locations near the mid-channel bar using an acoustic Doppler velocimeter (ADV). The study found changes in the velocity and turbulence profiles due to interactions between the fluid flow and the mid-channel bar. CFD modeling with the Reynolds stress model was also used to validate the experimental results.
Iahr2015 sustainability of the multi-channel system in the westerschelde, w...
This document discusses research on the sustainability of the multi-channel system in the Westerschelde estuary under the influence of dredging and disposal activities. It identifies several problems and shortcomings with previous analyses, including that they only considered isolated single cells and did not account for interactions between cells or the influence of mud transport. The document proposes further research to address these issues, including developing improved analytical and numerical models to better understand the impact of factors like sand mining, mud transport, interactions between cells, and meso-scale morphological development within cells.
Rc201 day 1 jennings 10
This document provides an overview of stream restoration, including definitions of key concepts like what constitutes a healthy stream and ecosystem restoration. It discusses common stream insults or degradation factors and describes several approaches to restoration, emphasizing the importance of designing projects based on a specified guiding image and reference reaches. Specific restoration components are outlined, such as reconnecting the channel to its floodplain, installing in-stream structures, and enhancing riparian buffers. Design methods like threshold channels, alluvial channels using regime equations, hydraulic geometry, and analytical models are also summarized.
Neiwpcc nps 2010
This document discusses using data mining techniques like artificial neural networks (ANN) to model nonpoint source pollution impacts on complex coastal estuaries. ANN models can be trained on water quality monitoring data to better understand tidal dynamics, rainfall effects, and dissolved oxygen levels. Case studies of the Cooper River and Beaufort River estuaries show ANN models more accurately simulated hydrodynamics and water quality than traditional models. Data mining approaches provide insights into estuary processes and support management decisions for issues like total maximum daily loads.
Water and Productivity Impacts for the NBDC
Presented by Charlotte MacAlister, Birhanu Zemadim , Teklu Erkossa , Amare Haileslassie, Dan Fuka, Tammo Steenhuis, Solomon Seyoum, Holger Hoff, Kinde Getnet, and Nancy Johnson to the Nile Basin Development Challenge Science and Reflection Workshop, Addis Ababa, 4-6 May 2011
Ijetr011940
ER Publication,
IJETR, IJMCTR,
Journals,
International Journals,
High Impact Journals,
Monthly Journal,
Good quality Journals,
Research,
Research Papers,
Research Article,
Free Journals, Open access Journals,
erpublication.org,
Engineering Journal,
Science Journals,
IRJET- Parameters Affecting the Clogging of Recharge Wells in Different Soil ...
This document summarizes a study on the parameters affecting the clogging of recharge wells in different soil types. The study examined how total suspended solids (TSS) concentration and water head affect recharge well efficiency over time in sandy soil. Experiments were conducted with a model recharge well system using three water tanks. Results showed that in sandy soil, a change in water head affected efficiency from 20% to 31%, while a change in TSS concentration affected efficiency from 70% to 80%. Higher water head and TSS concentration led to a faster decrease in the flow rate from the well over time. It is recommended to use low TSS concentrations for recharging sandy soil to maintain better long-term flow.
final report
The ICAR Indian Institute of Water Management was established in 1988 and aims to develop improved water management technologies through research. It conducts research through five programs: rainwater management, canal water management, groundwater management, waterlogged area management, and on-farm research and technology transfer.
The document then discusses the design of creek irrigation systems. It defines tidal creeks and explains how salinity varies in creeks over tidal cycles. It also discusses factors that influence salinity changes like urbanization. The document outlines the process for designing creek irrigation systems which includes determining design discharge, selecting a cross-sectional shape based on soil type and erosion control needs, using Manning's formula to calculate dimensions, and adding freeboard
Improvements of hydrologic and water quality models motivated by ceap
Improvements of hydrologic and water quality models motivated by ceapSoil and Water Conservation Society
This document summarizes improvements made to hydrologic and water quality models as a result of the Conservation Effects Assessment Project (CEAP). Several models were enhanced to better assess the impacts of conservation practices, including RUSLE2, AnnAGNPS, SWAT, and CONCEPTS. Key enhancements included improved modeling of processes like subsurface drainage, riparian buffers, and streambank erosion. Case studies demonstrated the models more accurately simulated factors like sediment reduction from conservation buffers and the effects of farm ponds on streamflow. Overall, CEAP led to important advancements in the ability to evaluate conservation practices using validated, process-based models at multiple scales.SeniorThesis2
This document describes the development of a stage-discharge rating curve for Beaver Creek in Springfield, Ohio. Field discharge measurements were taken using acoustic Doppler velocimetry from June to November 2011. A synthetic rating curve was also created using the step-backwater method to estimate high flows beyond safe wading levels. The rating curve relates water surface elevation to discharge and will allow estimation of flows from continuous stage monitoring.
Final Report NRM 495 FINAL
Jared Sartini completed a capstone project studying the effects of a remnant dam on Rum Creek in Kent County, Michigan. Field measurements were taken upstream and downstream of the dam, including bank erosion rates, substrate composition, and macroinvertebrate sampling. No significant differences were found between upstream and downstream areas. The dam is scheduled for removal to restore natural stream functions. Post-removal monitoring over 3 years is planned to evaluate the ecological response.
2017 Greater Mekong Forum - Session 6 - River health and hydropower on the La...
2017 Greater Mekong Forum - Session 6 - River health and hydropower on the La...Water, Land and Ecosystems (WLE)
River Health and Hydropower on the Lancang River discusses research on balancing river health and hydropower requirements in the Lancang River Basin. The document outlines research on river health assessment and hydropower impacts, transboundary environmental effects of hydropower, and experiences sharing environmental protection between China and Laos. Presenters from Ecofish Research Ltd., Asian International Rivers Center, and the National University of Laos discuss their findings and seek feedback on research results and recommendations for balancing river health and sustainable hydropower development in the Greater Mekong region.Rc101 day1
This document provides an overview of stream assessment and watershed functions. It defines a stream as a body of water with a current confined within banks. It discusses key components of watersheds like hydrologic cycles, stream networks, and how watersheds transport water, sediment, and dissolved materials. The document also covers stream impairments, restoration principles, and functions like transporting water and sediment and providing habitat.
Analysis of Bund to avoid breach in Irrigation system of Sindh, Pakistan.
Deformation problem and Instability may occur in roads of katcha regions in Sindh during floods. Here an example (in 2010) in north region of Sindh, Pakistan by failure of Thori Bund which not only fail the system of Irrigation but massive destruction comes in result due to failure of Thori bund 1.21 Million houses were damaged and 2.33 Million people were died. Regarding to this major accident we should measure the stability of existing Bunds to avoid the Flood Problem
The Development of a Catchment Management Modelling System for the Googong Re...
A scenario assessment model to assist the end-user in determining priorities for a series of agreed management prescriptions that can be enacted through controls on existing landuse
Water Quality Monitoring Programs in Fairfax County, April 2014
This document summarizes the history of surface water quality monitoring in Fairfax County from 1969 to present. It outlines key milestones and studies conducted over time, including the health department's stream monitoring program in 1969, the ongoing Gunston Cove ecological study partnership since 1984, and the establishment of the Stream Protection Strategy in 1998. It also describes the current state of the county's monitoring program, which includes biological monitoring of streams, dry and wet weather screening of stormwater outfalls, watershed and lake studies, and an ongoing stream gaging study partnership with the USGS since 2007.
Scour Sensor_CarlyRobbins_RACC
1) The study tested a new sensor called the Sedimeter to determine if it could accurately measure erosion and turbidity levels in both laboratory and field settings.
2) In the laboratory, the Sedimeter detected changes in turbidity from adding water and sediment as well as erosion simulated by excavation.
3) When deployed in a river, the Sedimeter recorded decreases in turbidity over time as sediment settled, indicating it could monitor changes in the field. However, the sensor required resets and was sensitive to variables, making results inconsistent.
Arthington iwc e flows principles handout
1) The document discusses environmental flows and management scenarios for sustaining river ecosystems. It describes global declines in river health due to loss of flows and impacts of flow regime changes.
2) Two management scenarios are presented: determining environmental flows for a new reservoir, and prioritizing flows for multiple assets with limited water. Assessment methods ranging from rapid to comprehensive are discussed.
3) The ecological significance of natural flow regimes is explored, with flow identified as a master variable influencing physical/chemical characteristics and species distributions in rivers and floodplains.
Similar to Asce Ewrg Presentation (20)
Iahr2015 sustainability of the multi-channel system in the westerschelde, w...
Iahr2015 sustainability of the multi-channel system in the westerschelde, w...
IRJET- Parameters Affecting the Clogging of Recharge Wells in Different Soil ...
IRJET- Parameters Affecting the Clogging of Recharge Wells in Different Soil ...
REVIEW of submerged breakwater and artificial reef structure.docx
REVIEW of submerged breakwater and artificial reef structure.docx
Improvements of hydrologic and water quality models motivated by ceap
Improvements of hydrologic and water quality models motivated by ceap
2017 Greater Mekong Forum - Session 6 - River health and hydropower on the La...
2017 Greater Mekong Forum - Session 6 - River health and hydropower on the La...
Analysis of Bund to avoid breach in Irrigation system of Sindh, Pakistan.
Analysis of Bund to avoid breach in Irrigation system of Sindh, Pakistan.
The Development of a Catchment Management Modelling System for the Googong Re...
The Development of a Catchment Management Modelling System for the Googong Re...
Water Quality Monitoring Programs in Fairfax County, April 2014
Water Quality Monitoring Programs in Fairfax County, April 2014
Recently uploaded
GraphSummit Singapore | Enhancing Changi Airport Group's Passenger Experience...
Dr. Sean Tan, Head of Data Science, Changi Airport Group
Discover how Changi Airport Group (CAG) leverages graph technologies and generative AI to revolutionize their search capabilities. This session delves into the unique search needs of CAG’s diverse passengers and customers, showcasing how graph data structures enhance the accuracy and relevance of AI-generated search results, mitigating the risk of “hallucinations” and improving the overall customer journey.
Uni Systems Copilot event_05062024_C.Vlachos.pdf
Unlocking Productivity: Leveraging the Potential of Copilot in Microsoft 365, a presentation by Christoforos Vlachos, Senior Solutions Manager – Modern Workplace, Uni Systems
Programming Foundation Models with DSPy - Meetup Slides
Prompting language models is hard, while programming language models is easy. In this talk, I will discuss the state-of-the-art framework DSPy for programming foundation models with its powerful optimizers and runtime constraint system.
みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
ここ3000字までしか入らないけどタイトルの方がたくさん文字入ると思います。
20240609 QFM020 Irresponsible AI Reading List May 2024
Everything I found interesting about the irresponsible use of machine intelligence in May 2024
GraphSummit Singapore | Graphing Success: Revolutionising Organisational Stru...
Sudheer Mechineni, Head of Application Frameworks, Standard Chartered Bank
Discover how Standard Chartered Bank harnessed the power of Neo4j to transform complex data access challenges into a dynamic, scalable graph database solution. This keynote will cover their journey from initial adoption to deploying a fully automated, enterprise-grade causal cluster, highlighting key strategies for modelling organisational changes and ensuring robust disaster recovery. Learn how these innovations have not only enhanced Standard Chartered Bank’s data infrastructure but also positioned them as pioneers in the banking sector’s adoption of graph technology.
“Building and Scaling AI Applications with the Nx AI Manager,” a Presentation...
“Building and Scaling AI Applications with the Nx AI Manager,” a Presentation...Edge AI and Vision Alliance
For the full video of this presentation, please visit: https://www.edge-ai-vision.com/2024/06/building-and-scaling-ai-applications-with-the-nx-ai-manager-a-presentation-from-network-optix/
Robin van Emden, Senior Director of Data Science at Network Optix, presents the “Building and Scaling AI Applications with the Nx AI Manager,” tutorial at the May 2024 Embedded Vision Summit.
In this presentation, van Emden covers the basics of scaling edge AI solutions using the Nx tool kit. He emphasizes the process of developing AI models and deploying them globally. He also showcases the conversion of AI models and the creation of effective edge AI pipelines, with a focus on pre-processing, model conversion, selecting the appropriate inference engine for the target hardware and post-processing.
van Emden shows how Nx can simplify the developer’s life and facilitate a rapid transition from concept to production-ready applications.He provides valuable insights into developing scalable and efficient edge AI solutions, with a strong focus on practical implementation.UiPath Test Automation using UiPath Test Suite series, part 5
Welcome to UiPath Test Automation using UiPath Test Suite series part 5. In this session, we will cover CI/CD with devops.
Topics covered:
CI/CD with in UiPath
End-to-end overview of CI/CD pipeline with Azure devops
Speaker:
Lyndsey Byblow, Test Suite Sales Engineer @ UiPath, Inc.
Why You Should Replace Windows 11 with Nitrux Linux 3.5.0 for enhanced perfor...
The choice of an operating system plays a pivotal role in shaping our computing experience. For decades, Microsoft's Windows has dominated the market, offering a familiar and widely adopted platform for personal and professional use. However, as technological advancements continue to push the boundaries of innovation, alternative operating systems have emerged, challenging the status quo and offering users a fresh perspective on computing.
One such alternative that has garnered significant attention and acclaim is Nitrux Linux 3.5.0, a sleek, powerful, and user-friendly Linux distribution that promises to redefine the way we interact with our devices. With its focus on performance, security, and customization, Nitrux Linux presents a compelling case for those seeking to break free from the constraints of proprietary software and embrace the freedom and flexibility of open-source computing.
National Security Agency - NSA mobile device best practices
Threats to mobile devices are more prevalent and increasing in scope and complexity. Users of mobile devices desire to take full advantage of the features
available on those devices, but many of the features provide convenience and capability but sacrifice security. This best practices guide outlines steps the users can take to better protect personal devices and information.
GraphSummit Singapore | The Art of the Possible with Graph - Q2 2024
Neha Bajwa, Vice President of Product Marketing, Neo4j
Join us as we explore breakthrough innovations enabled by interconnected data and AI. Discover firsthand how organizations use relationships in data to uncover contextual insights and solve our most pressing challenges – from optimizing supply chains, detecting fraud, and improving customer experiences to accelerating drug discoveries.
How to Get CNIC Information System with Paksim Ga.pptx
Pakdata Cf is a groundbreaking system designed to streamline and facilitate access to CNIC information. This innovative platform leverages advanced technology to provide users with efficient and secure access to their CNIC details.
20240605 QFM017 Machine Intelligence Reading List May 2024
Everything I found interesting about machines behaving intelligently during May 2024
Mind map of terminologies used in context of Generative AI
Mind map of common terms used in context of Generative AI.
Essentials of Automations: The Art of Triggers and Actions in FME
In this second installment of our Essentials of Automations webinar series, we’ll explore the landscape of triggers and actions, guiding you through the nuances of authoring and adapting workspaces for seamless automations. Gain an understanding of the full spectrum of triggers and actions available in FME, empowering you to enhance your workspaces for efficient automation.
We’ll kick things off by showcasing the most commonly used event-based triggers, introducing you to various automation workflows like manual triggers, schedules, directory watchers, and more. Plus, see how these elements play out in real scenarios.
Whether you’re tweaking your current setup or building from the ground up, this session will arm you with the tools and insights needed to transform your FME usage into a powerhouse of productivity. Join us to discover effective strategies that simplify complex processes, enhancing your productivity and transforming your data management practices with FME. Let’s turn complexity into clarity and make your workspaces work wonders!
AI 101: An Introduction to the Basics and Impact of Artificial Intelligence
Imagine a world where machines not only perform tasks but also learn, adapt, and make decisions. This is the promise of Artificial Intelligence (AI), a technology that's not just enhancing our lives but revolutionizing entire industries.
Recently uploaded (20)
GraphSummit Singapore | Enhancing Changi Airport Group's Passenger Experience...
GraphSummit Singapore | Enhancing Changi Airport Group's Passenger Experience...
Programming Foundation Models with DSPy - Meetup Slides
Programming Foundation Models with DSPy - Meetup Slides
みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
20240609 QFM020 Irresponsible AI Reading List May 2024
20240609 QFM020 Irresponsible AI Reading List May 2024
GraphSummit Singapore | Graphing Success: Revolutionising Organisational Stru...
GraphSummit Singapore | Graphing Success: Revolutionising Organisational Stru...
“Building and Scaling AI Applications with the Nx AI Manager,” a Presentation...
“Building and Scaling AI Applications with the Nx AI Manager,” a Presentation...
UiPath Test Automation using UiPath Test Suite series, part 5
UiPath Test Automation using UiPath Test Suite series, part 5
Why You Should Replace Windows 11 with Nitrux Linux 3.5.0 for enhanced perfor...
Why You Should Replace Windows 11 with Nitrux Linux 3.5.0 for enhanced perfor...
National Security Agency - NSA mobile device best practices
National Security Agency - NSA mobile device best practices
GraphSummit Singapore | The Art of the Possible with Graph - Q2 2024
GraphSummit Singapore | The Art of the Possible with Graph - Q2 2024
How to Get CNIC Information System with Paksim Ga.pptx
How to Get CNIC Information System with Paksim Ga.pptx
20240605 QFM017 Machine Intelligence Reading List May 2024
20240605 QFM017 Machine Intelligence Reading List May 2024
Mind map of terminologies used in context of Generative AI
Mind map of terminologies used in context of Generative AI
Essentials of Automations: The Art of Triggers and Actions in FME
Essentials of Automations: The Art of Triggers and Actions in FME
AI 101: An Introduction to the Basics and Impact of Artificial Intelligence
AI 101: An Introduction to the Basics and Impact of Artificial Intelligence
Asce Ewrg Presentation
- 1. By Marjorie Wolfe, PE, CFM Senior Engineer Clean Water Services Tualatin River Tributaries Cohesive Stream Channel Erodibility Study
- 7. The Clean Water Course Swale Water Quality Treatment Stream Restoration Projects Watersheds 2000 Healthy Streams Plan Watershed Based Permit Stream Erodibility Study Vegetated Corridor Standards
- 12. Cedar Mill Creek Watershed, 1984
- 13. Cedar Mill Creek Watershed, 1990
- 14. Cedar Mill Creek Watershed, 1994
- 15. Cedar Mill Creek Watershed, 1997
- 16. Cedar Mill Creek Watershed, 2002
- 20. What is different about cohesives?
- 21. What does flow have to do with it? (USEPA - after Wolman and Miller 1960)
- 26. Obtained from jet-test device = k ( o - c ) = erosion rate (m/s) k = erodibility coefficient (m 3 /N-s) o = boundary shear stress (Pa) c = critical shear stress (Pa) ( o - c ) = excess shear stress Critical shear stress is the stress required to initiate erosion. The Equation
- 27. Jest Test Device Jet Nozzle Jet Nozzle As scour hole depth increases, shear stress decreases
- 28. From Relation between Shear Stress and Erosion We Can Calculate c and Shear Stress, Pa Erosion Rate, cm 3 /sec c
- 31. Bank-Toe Erosion After First Flow Event Bank Stability and Toe Erosion Model (BSTEM)
- 32. Check for stability FS>1
- 33. Simulate Next Flow and Check Stability
- 36. Cohesive Strength Meter (CSM ) The CSM consists of a water-filled chamber 30 mm in diameter that is pushed into the sediment. The jet of water comes from a downward directed nozzle in the chamber. The velocity of the jet is increased systematically through each experiment. Bed erosion is inferred from the drop in the transmission of infrared light across the chamber caused by the suspension of sediment. Lighter, Faster, not as robust, indirect measurement
- 37. Mapping Critical Shear Stress: Yalobusha River Basin, MS
- 39. Cohesion due to roots is a function of the tensile strength of the roots and their distribution (root-area ratio)
- 41. Same creek different corridor