This document discusses using hydrological models like SWAT, MODFLOW, and SEAWAT to assess the impacts of climate change on water resources. It provides an overview of these models, including their inputs, outputs, capabilities, and examples of case studies applying the models. Specifically, SWAT is highlighted as it can be used at the watershed scale to model processes like precipitation, evapotranspiration, infiltration, surface runoff, and streamflow under different climate scenarios. The document emphasizes the importance of hydrological modeling and tools like MODFLOW for understanding and predicting hydrologic system responses to climate change.
A study confined to the lower tapi basin in Gujarat, India to find out the primary causes for 2006 floods in Surat city. The study involves collection of topographical data from the local geological survey organization, rainfall data from meteorological department of india and the application of HEC-HMS software from US Army corps of engineers to identify the primary cause of the runoff.
A study confined to the lower tapi basin in Gujarat, India to find out the primary causes for 2006 floods in Surat city. The study involves collection of topographical data from the local geological survey organization, rainfall data from meteorological department of india and the application of HEC-HMS software from US Army corps of engineers to identify the primary cause of the runoff.
Using Computer-simulated hydrological model (SWAT) to estimate the ground-wat...Dhiraj Jhunjhunwala
This work is the result of a project-based course, Water Resources Engineering. The project is about the estimation of ground-water recharge due to rainfall in a US-based watershed. The semi-distributed hydrological model(SWAT) has been used to simulate the monthly input and output sub-basin-wise streamflow values,which have been used to compute the total infiltration. The results have been depicted in th form of various monthy and yearly infilration values
This study explains the use of remote sensing data for spatially distributed hydrological modeling using the MIKE-SHE software used in Tarim River Basin CHINA
identification of ground water potential zones using gis and remote sensingtp jayamohan
the identification of ground water potential zones using gis and remote sensing.The study is conducted in the Muvattupuzha block.The various parameters used are geology,geomorphology,rainfall,soil type,etc.
A rainfall-runoff model for Chew and Kinder Reservoirs, Peak District; utilising the Flood Studies Report to find whether the dams at Chew and Kinder could withstand a 1-in-10,000 year storm (UK recommended safety limit)
Grade: 91%
Groundwater models are simplified representation of large and real hydrogeologic systems like river basins or watersheds. GWM is attempted to analyse the mechanisms which control the occurrence and movement of groundwater and to evaluate the policies, actions and designs which may affect the systems. These models are less complex prototypes of complex hydrogeologic systems developed using spatially varying aquifer parameters, hydrologic properties, geologic boundary conditions and positions of withdrawal wells or recharging structures. These are designed to compute how pumping or recharge might affect the local or regional groundwater levels.
Application of GIS and Remote Sensing in Flood Risk ManagementAmitSaha123
Introduction to catastrophic disaster flood. Its impact on environment and human lives. GIS and Remote Sensing based solutions that can provide key approaches to mitigate flood related hazard as well as vulnerablities.
Assessing the ability of SWAT as a water quality model in the Lake Victoria b...Timo Brussée
There is a need for a water quality model for use in the Lake Victoria basin countries in East-Africa. The
region is characterised by data scarcity, a tropical climate and riverine, lacustrine tidal wetlands which form
an important buffer to riverine pollution of the lake. These characteristics of the basin form a challenge for
water quality models. The objective is to state the strengths and weaknesses of a potential water quality
model under these challenging conditions. This objective is executed with the soil water assessment tool
(SWAT) in a catchment of the Lake Victoria Basin as pilot area. The pilot area of the Mara river basin is
hydrologically complex containing tropical and plantation forest, savanna, grasslands, bi-annual agriculture,
shrublands and wetlands. It has varied soil types and bi-annual rain seasons
The study consist of literature research and flow simulation of the transboundary Mara river basin. The
model study aims to characterise the hydrology in the pilot area. The study includes a thorough analysis of
rainfall, stage and flow data. Model preparation steps include the use of weighted-area rainfall estimation
methods, climate model data and empirical derivation of soil input parameters. Discharge calibration
methods include multi-site calibration, by making use of an alternative objective function statistic for the
commonly used Nash-Sutcliffe Efficiency (NSE) called the Kling-Gupta Efficiency (KGE). The literature study
targets previous flow and water quality studies done in tropical or wetland areas, thereby looking to see how
these studies adapted to hydrological modelling with SWAT in tropical or wetland areas, and why theses
adaptions were made. The literature research also includes a comparison of wetland processes in SWAT
with the physical, biological and chemical processes as described in previous studies.
The Mara river basin flow simulation gave a satisfactory model performance for two out of three calibration
sites, thereby being able to give preliminary outputs on water-balance and other flow characteristics. During
research, a number of model, knowledge and data gaps were found to be critical for better understanding
the hydrological and water quality system workings in the Lake Victoria and Mara river basin. From the
model and literature study it is concluded that several issues on data scarcity and hydrological model
processes in the tropics can be overcome. These do not necessarily decrease model performance or
uncertainty in the SWAT model. However, wetland processes are oversimplified in SWAT. Modification and
coupled SWAT models yet have not been able to provide an alternative to the default model that adequately
represents the main flow, sediment and nutrients processes and fluxes that are present in Mara’s wetlands.
Using Computer-simulated hydrological model (SWAT) to estimate the ground-wat...Dhiraj Jhunjhunwala
This work is the result of a project-based course, Water Resources Engineering. The project is about the estimation of ground-water recharge due to rainfall in a US-based watershed. The semi-distributed hydrological model(SWAT) has been used to simulate the monthly input and output sub-basin-wise streamflow values,which have been used to compute the total infiltration. The results have been depicted in th form of various monthy and yearly infilration values
This study explains the use of remote sensing data for spatially distributed hydrological modeling using the MIKE-SHE software used in Tarim River Basin CHINA
identification of ground water potential zones using gis and remote sensingtp jayamohan
the identification of ground water potential zones using gis and remote sensing.The study is conducted in the Muvattupuzha block.The various parameters used are geology,geomorphology,rainfall,soil type,etc.
A rainfall-runoff model for Chew and Kinder Reservoirs, Peak District; utilising the Flood Studies Report to find whether the dams at Chew and Kinder could withstand a 1-in-10,000 year storm (UK recommended safety limit)
Grade: 91%
Groundwater models are simplified representation of large and real hydrogeologic systems like river basins or watersheds. GWM is attempted to analyse the mechanisms which control the occurrence and movement of groundwater and to evaluate the policies, actions and designs which may affect the systems. These models are less complex prototypes of complex hydrogeologic systems developed using spatially varying aquifer parameters, hydrologic properties, geologic boundary conditions and positions of withdrawal wells or recharging structures. These are designed to compute how pumping or recharge might affect the local or regional groundwater levels.
Application of GIS and Remote Sensing in Flood Risk ManagementAmitSaha123
Introduction to catastrophic disaster flood. Its impact on environment and human lives. GIS and Remote Sensing based solutions that can provide key approaches to mitigate flood related hazard as well as vulnerablities.
Assessing the ability of SWAT as a water quality model in the Lake Victoria b...Timo Brussée
There is a need for a water quality model for use in the Lake Victoria basin countries in East-Africa. The
region is characterised by data scarcity, a tropical climate and riverine, lacustrine tidal wetlands which form
an important buffer to riverine pollution of the lake. These characteristics of the basin form a challenge for
water quality models. The objective is to state the strengths and weaknesses of a potential water quality
model under these challenging conditions. This objective is executed with the soil water assessment tool
(SWAT) in a catchment of the Lake Victoria Basin as pilot area. The pilot area of the Mara river basin is
hydrologically complex containing tropical and plantation forest, savanna, grasslands, bi-annual agriculture,
shrublands and wetlands. It has varied soil types and bi-annual rain seasons
The study consist of literature research and flow simulation of the transboundary Mara river basin. The
model study aims to characterise the hydrology in the pilot area. The study includes a thorough analysis of
rainfall, stage and flow data. Model preparation steps include the use of weighted-area rainfall estimation
methods, climate model data and empirical derivation of soil input parameters. Discharge calibration
methods include multi-site calibration, by making use of an alternative objective function statistic for the
commonly used Nash-Sutcliffe Efficiency (NSE) called the Kling-Gupta Efficiency (KGE). The literature study
targets previous flow and water quality studies done in tropical or wetland areas, thereby looking to see how
these studies adapted to hydrological modelling with SWAT in tropical or wetland areas, and why theses
adaptions were made. The literature research also includes a comparison of wetland processes in SWAT
with the physical, biological and chemical processes as described in previous studies.
The Mara river basin flow simulation gave a satisfactory model performance for two out of three calibration
sites, thereby being able to give preliminary outputs on water-balance and other flow characteristics. During
research, a number of model, knowledge and data gaps were found to be critical for better understanding
the hydrological and water quality system workings in the Lake Victoria and Mara river basin. From the
model and literature study it is concluded that several issues on data scarcity and hydrological model
processes in the tropics can be overcome. These do not necessarily decrease model performance or
uncertainty in the SWAT model. However, wetland processes are oversimplified in SWAT. Modification and
coupled SWAT models yet have not been able to provide an alternative to the default model that adequately
represents the main flow, sediment and nutrients processes and fluxes that are present in Mara’s wetlands.
After a post on Dot Earth described environmental problems related to a coal-ash landfill in Uniontown, Alabama, state officials challenged many points in the story. The response and story are here: http://j.mp/AlabamaAsh
Here is a letter from Black Warrior Riverkeeper challenging the assertions of state officials.
DSD-INT 2016 The unsaturated zone MetaSWAP-package - Van WalsumDeltares
Presentation by Paul van Walsum (Wageningen Environmental Research) at the iMOD International User Day, during Delft Software Days 2016. Tuesday 1 November 2016, Delft.
Climate Change Impact Assessment on Hydrological Regime of Kali Gandaki BasinHI-AWARE
The presentation focuses on the findings of the impact of climate change on the hydrological regime and water balance components of the Kali Gandaki basin in Nepal. The Soil and Water Assessment Tool (SWAT) has been used to predict future projections.
Presented in the ASEAN Cooperation on Utilization of Space Technology for Disaster Management Seminar, 11th Aug 2010 at Miracle Grand Convention Hotel, Thailand. Hosted by GISTDA
Biogeochemical cycles
Water cycle
Why water is important?
Distribution of water on Earth
Steps of water cycle
Pollution- How effects on water cycle
Groundwater depletion
Presented by Maru Alem Assegahegn and Birhanu Zemadim at the Nile Basin Development Challenge (NBDC) Science Workshop–2013, Addis Ababa, Ethiopia, 9 – 10 July 2013
Undertaking Modelling of Flooding due to Wave Overtopping using the MIKE by D...Stephen Flood
Undertaking Modelling of Flooding due to Wave Overtopping using the MIKE by DHI Software Suite - Dr Suzie Clarke (DHI)
This presentation outlines the basis for one of the methodologies that can be followed in order to simulate the flooding of coastal areas due to overtopping of coastal defences by extreme or storm wave conditions. It is not expected that the slides are exhaustive in detail, nor present the only approach, but are provided to give basic guidance for all experience levels. Care is advised when following this methodology and all results should be subjected to reasonable checking.
Read the full Executive Summary here - http://s3.amazonaws.com/dhiuk_blog_storage/UGM_2014/Overtopping-with-BW-Guidance-Executive-Summary.pdf
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 ChallengeScience and Reflection Workshop, Addis Ababa, 4-6 May 2011
Drought monitoring, Precipitation statistics, and water balance with freely a...AngelosAlamanos
The aim of this study is to showcase and discuss these new technologies for hydrometeorological studies. Six of NASA’s web-repositories that can be used to freely download and
visualise such spatial and/or time-series factors are listed and explained with examples for Ireland: ways
to access hydrological, meteorological, soil, vegetation and socio-economic data are shown, and
estimations of various precipitations statistics, anomalies, and water balance are presented for monthly
and seasonal analyses. The advantages, disadvantages and limitations of the satellite datasets are
discussed to provide useful recommendations about their proper use, based on purpose, scale, precision,
time requirement, and modelling-expansion criteria.
Streamflow simulation using radar-based precipitation applied to the Illinois...Alireza Safari
This paper describes the application of a spatially distributed hydrological model WetSpa (Water and Energy Transfer between Soil, Plants and Atmosphere) using radar-based rainfall data provide by the United States Hydrology Laboratory of NOAA's National Weather Service for a distributed model intercomparison project. The model is applied to the
river basin above Tahlequah hydrometry station with 30-m spatial resolution and one hour time--step for a total simulation period of 6 years. Rainfall inputs are derived from radar. The distributed model parameters are based on an extensive database of watershed characteristics available for the region, including digital maps of DEM, soil type, and land use. The model is calibrated and validated on part of the river flow records. The simulated hydrograph shows a good correspondence with observation (Nash efficiency coeffiecient >80%, indicating that the model is able to simulate the relevant hydrologic processes in the basin accurately.
The Development of a Catchment Management Modelling System for the Googong Re...GavanThomas
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
Objectives:
Develop a replicable integrated model (methodology) for evaluating the extent and development potential of renewable (non-renewable) groundwater resources in arid lands, with the Eastern Desert of Egypt as a pilot site.
The model will be replicable for similar arid areas; North of Sudan, Tibesty, Yemen, and Saudi Arabia.
Building national capacities.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
DSD-INT 2016 Regional groundwater flow systems in the Kenya Rift Valley - Mur...Deltares
Presentation by Patrick Murunga Wakhungu (University of Twente) at the iMOD International User Day, during Delft Software Days 2016. Tuesday 1 November 2016, Delft.
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
2. CC – hydrological cycle
Changes in temperature and precipitation - hydrologic
cycle.
3. Hydrological implications of CC for water resources
Precipitation amount
Global average increase
Marked regional differences
Precipitation frequency and intensity
Less frequent, more intense (Trenberth et al., 2002)
Evaporation and transpiration
Increased total evaporation
Regional complexities due to plant/ atmosphere interactions
4. Hydrological implications of CC for water resources(cont..)
Changes in run off
Despite global precipitation increases, areas of substantial runoff
decreases
Coastal zones
Saltwater intrusion into coastal aquifers
Severe storm-surge flooding
Water quality
Lower flows, could lead to higher contaminant concentration
Higher flows could lead to greater leaching and sediment
transport
5. Why Modelling is needed?
Model : The tool for understanding the system and its
behavior and for predicting their response.
6. Tools to use for the assessment:
Reference water models
1. SWAT
2. MODFLOW
3. Aquarius
4. Aquacrop
5. SWAP (Soil Water Atmosphere Plant)
6. ACRU
7. RIBASIM
8. MIKE MASIN
9. WEAP21
10. IRAS (Interactive River and Aquifer Simulation)
11. . . .
7. SWAT:
Management decisions on water, sediment, nutrient and
pesticide yields with reasonable accuracy on river basins.
Complex water quality constituents
•Rainfall-runoff, river routing on a daily timestep
MODFLOW
Most widely used numerical groundwater flow model
8. SWAP- soil-water-atmosphere-plant
• processes at field scale level (growing seasons)
• For water transport and crop growth
• simulates
– transport of water and solutes
– heat in unsaturated/saturated soils
ACRU Model
• Operates on daily time step
• Outputs
– Irrigation scheduling - reservoir operations
– peak discharge , Sediment yield- P, N yields
– flow routing, land use impacts and management changes
– Sensitive climate changes
9. WEAP21
Seamlessly integrating watershed hydrologic processes with water resources
management
Can be climatically driven
AQUARIS
Economic efficincy criterion requiring the reallocation of stream flows until the
net marginal return in all water uses is equal
Cannot be climatically driven
VOS
• Vegetation-overland flow-soil model
• Represents soil vegetation zones with MODFLOW
• Allows for specification of types of soil and vegetation
10. Data requirement
• Meteorological
• Hydrological data
• Surface data
– are required for the development and calibration of
a mathematical and/or numerical groundwater
model.
11. MODFLOW
First version, 1983, McDonald and Harbaugh.
Written to serve U.S. Geological Survey needs.
Education emphasized.
Mostly written in standard FORTRAN (GMG is C++)
Collaborative open-source development with roots at the USGS
Public domain (Free)
13. Widely used ground-water flow simulation program
Runs on any platform (Windows, Sun, Unix,
Linux,…).
Three-dimensional model
Solves the ground-water flow equation with different
possible properties, boundary conditions and initial
conditions
14. Advantages
• Include numerous facilities for data preparation
• Easy exchange of data in standard form
• Extended worldwide experience
• Continuous development
• Availability of source code and
15. Disadvantages:
• Surface runoff and unsaturated flow are not included,
• Hence in case of transient problems, MODFLOW can not be
applied if the flux at the groundwater table depends on the
calculated head and the function is not known in advance.
Land surface elevation is not used in MODFLOW,
except in the ET package.
16. MODFLOW
• When properly applied, MODFLOW is the recognized
standard model.
• Ground-water flow within the aquifer is simulated in
MODFLOW using a block-centered finite-difference approach.
• Flows from external stresses such as flow to wells, areal
recharge, evapotranspiration, flow to drains, and flow through
riverbeds can also be simulated.
18. MT3D (A Modular 3D Solute Transport Model)
• simulating solute transport in complex hydrogeologic settings.
• MT3D is linked with MODFLOW
• Designed specifically to handle advectively-dominated
transport problems without the need to construct refined
models specifically for solute transport.
19. FEFLOW
(Finite Element Subsurface Flow System)
Finite-element package for simulating 3D and 2D fluid density-
coupled flow, contaminant mass (salinity) and heat transport in
the subsurface.
HST3D
(3-D Heat and Solute Transport Model)
simulates ground-water flow and associated heat and solute
transport in 3D.
20. SEAWAT
(Three-Dimensional Variable-Density Ground-Water Flow)
• Developed to simulate variable- density, transient ground-
water flow in porous media.
• The source code for SEAWAT was developed by combining
MODFLOW and MT3D into a single program that solves
the coupled flow and solute-transport equations.
• * MT3D -(A Modular 3D Solute Transport Model )
22. SWIM
(Soil water infiltration and movement model)
• Deals with a one-dimensional vertical soil profile which
may be vertically in homogeneous but is assumed to be
horizontally uniform.
• Used to simulate runoff, infiltration, redistribution, solute
transport and redistribution of solutes, plant uptake and
transpiration, evaporation, deep drainage and leaching.
23. Often use MODFLOW through a
(Graphical) User Interface
Maps
Model
Results
26. OUTPUT OPTIONS
Listing file or into a separate file.
Complete listing of all input data, drawdown, and budget
data.
•Budget data are printed as a summary in the listing file,
and detailed budget data for all model cells can be written
into a separate file.
•ASCII text files
•Binary files
•Graphical user interface (GUI)
28. •Projected impacts of climate change on farmers’ extraction of
groundwater from crystalline aquifers in South India
•Sylvain Ferrant et al., 2014
• Downscaled GCM data- spatially distributed agro-hydrological
model - MODFLOW
•Projected - climatic extremes create worse GWE shortages
•Areas vulnerable to CC in terms of irrigation apportionment
•Emphasize – importance of accounting for local characteristics
(water harvesting systems and maximal aquifer capacity versus
GWE) in developing measures to cope with CC impacts.
29. •Seasonal variation in natural recharge of coastal aquifers
•Mollema and Antonellini (2013)
•Temperature data for the period 1960–1990 from LocClim (local
climate estimator) and IPCC SRES A1b scenario
•For 2070–2100 - calculate the potential evapotranspiration with
the Thornthwaite method.
•Potential recharge (difference between precipitation and potential
evapotranspiration) was defined at 12 locations
• SEAWAT model
30.
31. •Soil and Water Assessment Tool
• Spatial Scale: watershed or river basin
• Data Organization: sub basins or hydrologic response units
(HRU’s)
• Time scale: Continuous time model (long term yield model)
based on a daily scale
Not for a single event
• Data Inputs: weather, soil properties, topography,
vegetation, and land management practices
From the BASINS databases
SWAT – An Overview
32. SWAT separates soil profiles into 10 layers to model inter and
intra-movement between layers.
The model is applied to each soil layer independently starting
at the upper layer.
SWAT soil water routing feature consists of four main pathways:
1. Soil evaporation
2. Plant uptake and transpiration
3. Lateral flow
4. Percolation.
SWAT – An Overview
33. Soil and Water Assessment
Tool (SWAT)
• Inputs:
– Precipitation
– Max/Min Temperature
– Land Use
– Soils
– Land Management
– Topography
– Hydrogeology
– Weather
http://www.brc.tamus.edu/swat/
• Output:
– Daily Streamflow
SWAT is a watershed modeling tool
37. SWAT Output with Various Sources of Climate Input
Takle et al., 2005
NNR -> RCM -> SWAT-> stream flow
GCM -> RCM -> SWAT-> stream flow
GHG -> GCM -> RCM -> SWAT -> stream flow
Stream flow vs. precipitation
38. SWAT2000: current capabilities and research opportunities in applied
watershed modelling
J. G. Arnold and N. Fohrer, 2005
•To assist water resource managers in assessing the impact of management and
climate on water supplies and non-point source pollution in watersheds and large
river basins.
•Was developed to ‘scale up’ past field-scale models to large river basins.
•Model components include weather, hydrology, erosion/sedimentation, plant
growth, nutrients, pesticides, agricultural management, stream routing and
pond/reservoir routing.
•Current research is focusing on bacteria, riparian zones, pothole topography,
forest growth, channel downcutting and widening, and input uncertainty
analysis.
39. Climate change impact assessment on hydrology of Indian river basin
Gosain et al., 2006
• NATCOM - was the first attempt to quantify the impact of the climate change on the
water resources of the country
• twelve river basins
• detailed analyses on two river basins selected with respect to the extreme drought and
flood conditions predicted on account of the climate change.
• spatio-temporal water availability- without incorporating any man-made changes like
dams, diversions, etc.
Percent change in mean annual water balance components