Flood mitigation reservoirs are constructed to store flood waters and reduce downstream flooding. The key factors in reservoir location and sizing include topography, geology, local conditions, rim stability, and water holding capability. Larger reservoirs can store more flood water but economic factors also influence sizing. Operational problems include needing streamflow forecasts to plan releases and the potential to exacerbate flooding if excess releases synchronize with tributary floods. Major flood mitigation reservoirs in the Philippines include Angat, Ambuklao, Pantabangan, La Mesa, and San Roque Dams.
Topics:
1. Reservoir Classification
2. Investigations
3. Selection of Site for Reservoir
4. Zones of Storage
5. Storage Capacity and Yield
6. Mass Inflow Curve & Demand Curve
7. Calculation of Reservoir Capacity
8. Reservoir Sedimentations
9. Life of Reservoir
10. Selection of Dam
Topics:
1. Reservoir Classification
2. Investigations
3. Selection of Site for Reservoir
4. Zones of Storage
5. Storage Capacity and Yield
6. Mass Inflow Curve & Demand Curve
7. Calculation of Reservoir Capacity
8. Reservoir Sedimentations
9. Life of Reservoir
10. Selection of Dam
Reservoir Planning: Introduction; Investigations for reservoir planning; Selection of site for a reservoir; Zones of storage in a reservoir; Storage capacity and yield; Mass inflow curve and demand curve; Calculation of reservoir capacity for a specified yield from the mass inflow curve; Determination of safe yield from a reservoir of a given capacity; Sediment flow in streams; Life of reservoir; Reservoir sediment control; flood routing. Various types of Spillways and design.
Introduction, Term related to reservoir planning (Yield, Reservoir planning and operation curves, Reservoir storage, Reservoir clearance), Investigation for reservoir planning, Significance of mass curve and demand curves, Applications of mass-curve and demand curves, Fixation of reservoir capacity from annual inflow and outflow, Fixation of reservoir capacity.
Types- selection of the suitable site for the diversion headwork components
of diversion headwork- Causes of failure of structure on pervious foundation- Khosla’s theory- Design of concrete sloping
glacis weir.
Reservoir Planning: Introduction; Investigations for reservoir planning; Selection of site for a reservoir; Zones of storage in a reservoir; Storage capacity and yield; Mass inflow curve and demand curve; Calculation of reservoir capacity for a specified yield from the mass inflow curve; Determination of safe yield from a reservoir of a given capacity; Sediment flow in streams; Life of reservoir; Reservoir sediment control; flood routing. Various types of Spillways and design.
Introduction, Term related to reservoir planning (Yield, Reservoir planning and operation curves, Reservoir storage, Reservoir clearance), Investigation for reservoir planning, Significance of mass curve and demand curves, Applications of mass-curve and demand curves, Fixation of reservoir capacity from annual inflow and outflow, Fixation of reservoir capacity.
Types- selection of the suitable site for the diversion headwork components
of diversion headwork- Causes of failure of structure on pervious foundation- Khosla’s theory- Design of concrete sloping
glacis weir.
Impact of climate change, land use change and residential mitigation measures...Global Risk Forum GRFDavos
Jennifer K. POUSSIN1,2, Philip J. WARD1,2, Philip BUBECK1,2,3, Jeroen C.J.H. AERTS1,2
1Institute for Environmental Studies (IVM), VU University Amsterdam, Amsterdam, The Netherlands; 2Amsterdam Global Change Institute (AGCI), VU University Amsterdam, Amsterdam, The Netherlands; 3German Research Centre for Geosciences (GFZ), Helmholtz Centre Potsdam, Section Hydrology, Germany
Power Sources for the Internet-of-Things: Markets and Strategiesn-tech Research
NanoMarkets believes that the deployments of sensors and processors for the Internet-of-Things (IoT) are creating huge new opportunities for manufacturers of power source devices. Because of IoT, power devices such as thin-film and printed batteries, energy harvesting modules, small flexible photovoltaics panels and thermoelectric sources, which have enjoyed marginal revenues up to now, may begin generating hundreds of millions of dollars in annual revenues.
However, suppliers of IoT power sources, as well as the semiconductor industry more generally face significant uncertainties in the IoT space. Not only is future of the IoT itself unclear, but also how the IoT “power infrastructure” will shape up technologically is a great unknown.
The objective of this report is to identify where the money will be made and lost in the emergent IoT power source business. It begins with an assessment of the power requirements of the various devices that NanoMarkets believes will form the “things” in the IoT. These include sensor networks, MCUs/MPUs and tagging devices, for example. The report continues by considering how established technologies such as batteries will adapt to new IoT opportunities and whether emerging technologies such as energy harvesting and thermoelectric power sources will find their first big markets as the result of IoT.
The report explores the opportunities for all industry sectors that will be impacted by the development of new power sources for the IoT. In particular we examine how leading battery companies, chipmakers, OEMs and others are preparing for the business opportunities in the IoT power source space. The report also discusses the strategies of eight firms that NanoMarkets believes will shape the market for power sources for the IoT over the next decade.
We believe that this report will be essential reading for business development and marketing executives in the battery, energy harvesting, RFID, sensors, photovoltaics and semiconductor industries, as well as the investment community. In addition to providing a thorough analysis of the IoT power source markets, this report also provides detailed eight-year forecasts of power sources for the IoT in both volume and value terms and with break outs by power source types.
- See more at: http://nanomarkets.net/market_reports/report/power-sources-for-the-internet-of-things-markets-and-strategies
This power point presentation gives a brief outlook about the need of Disaster Risk Management and its Structure in India. Further, it highlights issues, challenges and suggestions regarding September, 2014 Floods in Kashmir Valley.
Collaborative delivery of green infrastructure and water management solutions (e.g. SuDS) in the urban environment can realise multiple benefits including reduced flood risk, improved water quality and biodiversity, greater amenity and enhanced community health and well-being. In March 2016, the CaBA Urban Working Group, in collaboration with the Defra Urban Ecosystem Services Project (www.urbanwater-eco.services) and Ciria (www.ciria.org), hosted a series of workshops designed to build capacity and expertise within CaBA partnerships to help drive greater collaborative delivery within the urban environment.
Paul Ahern - Piezoelectric Energy Harvesting ReviewPaul Ahern
Mechanical energy is among the most plentiful and consistent energy sources in our day-to-day lives, which is available to us regardless of the whims of the weather or the cycles of day and night. Piezoelectric Energy Harvesters (PEH’s) are compact devices which allow the scavenging of low grade energy from ambient sources such as human and environmental vibrations, with the aim of using this energy to power autonomous electronic devices. Many decades of research and development in the field has led to commercially available devices based on piezoelectric materials which can be used to harvest milliwatts of energy from mechanical sources such as vibration, stress or strain.
This presentation thoroughly introduces hydraulic structures. Specifically, it explains different types of hydraulic structures, dams and reservoirs, parts of storage dams, classification of dams, storage calculations, different types of dams, characteristics of embankment dams, engineering activities for site investigation and construction of dams, site selection of dams, and foundation of dams and its treatment.
A hydraulic structure may be defined as any structure which is designed to handle water in any way
This includes the retention, conveyance, control, regulation and dissipation of the energy of water
Such water handling structures are required in many fields of civil engineering
The principal ones being water supply and conservation, hydroelectric power, irrigation and drainage, navigation, flood control, fish, wildlife service’s and certain aspects of highway engineering. Various equations, based on continuity, energy, and momentum principles, may be used
To calculate the most suitable length, width, shape, elevation and orientation of the structure.
The application of these basic principles to the practical problem of the design of hydraulic structures is called hydraulic design
Designed and constructed for managing and utilizing water resources to the best advantage of the human being and environment
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Vaccine management system project report documentation..pdfKamal Acharya
The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
TECHNICAL TRAINING MANUAL GENERAL FAMILIARIZATION COURSEDuvanRamosGarzon1
AIRCRAFT GENERAL
The Single Aisle is the most advanced family aircraft in service today, with fly-by-wire flight controls.
The A318, A319, A320 and A321 are twin-engine subsonic medium range aircraft.
The family offers a choice of engines
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
6. Multi-purpose Reservoir
A multi-purpose reservoir is planned and
constructed to serve not only one purpose
but various purpose together.
Managed to balance:
- Water supply - Navigation
- Flood control - Recreation
- Soil Erosion - Irrigation
- Environmental management
- Hydroelectric power generation
7.
8. Distribution Reservoir
A distribution reservoir connected with the
conduits of a primary water supply; used to
supply water to consumers according to
fluctuations in demand over short time
periods and serves for local storage in case of
emergency.
9.
10. Flood Control/Mitigation Reservoir
A flood control reservoir stores a portions of
the flood flows in such a way as to minimize
the flood peaks at the areas to be protected
downstream.
11.
12. Types of Flood Mitigation Reservoirs
a. Storage Reservoir
b. Retarding Basins
13. Storage Reservoir
The discharge from a storage reservoir is
regulated by gates and valves operated on the
basis of the judgment of the project engineer.
It differs from conservation reservoirs as they
need large sluiceway capacity in order to
allow rapid drawdown before and after a
flood.
14.
15. Retarding Basin
A detention basin or retarding basin is an
excavated area installed on, or adjacent to,
tributaries of rivers, streams, lakes or bays to
protect against flooding and, in some cases,
downstream erosion by storing water for a
limited period of time.
19. Prepared by: Ivy Diane L. Ramos
Purpose of flood-mitigation reservoirs and
locations of reservoirs
20. In environmental engineering, flood mitigation involves the management and
control of flood water movement, such as redirecting flood run-off through
the use of floodwalls and flood gates, rather than trying to prevent floods
altogether. It also involves the management of people, through measures
such as evacuation and dry/wet proofing properties.
Purpose of Flood-mitigation reservoir
21. This is accomplished by discharging all reservoir inflow until the outflow
reaches the safe capacity of the channel downstream. All flow above this rate
is stored until inflow drops below the safe channel capacity, and the stored
water is released to recover storage capacity for the next flood
The reservoir must be operated so as to produce a minimum water level at
the protected area, rather than a minimum at the dam
22. The prevention and mitigation of flooding can be studied
on three levels:
individual properties
small communities
whole towns or cities.
23. Property owners may fit their home to stop water entering by blocking doors
and air vents, waterproofing important areas and sandbagging the edges of
the building.
Protection of individual properties
24. When more homes, shops and infrastructure are threatened by the effects of flooding, then the
benefits of greater protection is worth the additional cost. Temporary flood defenses can be
constructed relatively quickly in certain locations and provide protection from rising flood waters.
Rivers running through large urban developments are often controlled and channeled. Water rising
above a canal's full capacity may cause flooding to spread to other waterways and areas of the
community, which causes damage. Defenses (both long-term and short-term) can be constructed to
minimize damage, which involves raising the edge of the water with levees, embankments or walls.
The high population and value of infrastructure at risk often justifies the high cost of mitigation in
larger urban areas.
Protection of communities
25. The most effective way of reducing the risk to people and property is
through the production of flood risk maps. Most countries have produced
maps which show areas prone to flooding based on flood data.
Flood risk management
28. Rim stability
Water-holding capability
Loss of reservoir water
Seismicity
Sedimentation
Bank storage
Topography
Geology
Local condition
Factors Affecting Location of Reservoirs
29. Topography a narrow site will minimize the amount of material in the dam
thus reducing its cost, but such site may adaptable
30. Geology the foundation of the dam should be relatively free of major faults
and shears. If these are present they require expensive foundation treatment.
31. Local Condition site availability of water supply, sewerage disposal, electric
power for construction purposes, telephone service should be chosen.
32. Rim stability and water-holding capability are interrelated. Rim failure can be
caused due to either the sliding or the erosion of a segment of the reservoir
rim. Seepage of water is mainly responsible for such failures.
33. Loss of reservoir water to the atmosphere occurs due to direct evaporation
from the reservoir surface. The evaporation losses are affected by the climate
of the region, shape of the reservoir, wind conditions, humidity, and
temperature. From considerations of evaporation, a reservoir site having a
small surface area to volume ratio will be better than a saucer-shaped
reservoir of equal capacity.
34. Bank Storage is the water which spreads out from the body of water, filling
interstices of the surrounding earth and rock mass.
35. The increased seismic activity is attributed to the
changes in the normal effective stresses in the
underlying rock because of the increased pore
pressure. The transmission of the hydrostatic
pressure through discontinuities in the underlying
rock can have a triggering effect where a critical state
of stress already exists.
36. The most effective flood mitigation is obtained from an adequate reservoir located
immediately upstream from the point (or reach) to be protected. A single reservoir may
not be able to protect a number citied at a different distances downstream.
Economical analysis and other factors often favor the upstream site despite its lesser
effectiveness,
No general rules can be set forth because each problem is unique, and several alternatives
must be evaluated.
The use of several small reservoir offers the possibility of developing initially only those
units of the system that yield the highest economic return and constructing the additional
units as the development of the area increases the potential benefits.
37. The life of a reservoir is predicted on the basis of the amount of sediment
delivered to it, the reservoir size, and its ability to retain the sediment.
Sediment deposition at the initial stage may be beneficial in the sense that it
may have the effect of a natural blanket resulting in reduced seepage loss
38. Stabilization of the unstable mass can also be achieved by strengthening or
replacing weak material. Grouting is the most common remedy for
strengthening such weak masses. It may be desirable to plan the steps to be
taken to mitigate the effects of potential slide after it has occurred in spite of
all preventive steps.
42. Are constructed in two main function:
1. First is to store water in the lake behind
the dam to even out the fluctuations in river
flow and match the availability in demand.
2. Second is to create a hydraulic head of
water in the reservoir upstream of the dam so
that water can be diverted into a canal and flow
due to gravity.
Dams
43. 1. Using a reservoir, the natural streamflow
can be regulated so that the outflow
follows the desired pattern.
2.To control flood.
3. To store water enough to sustain the
demands on water during dry season.
4. Most probably as a source of energy
such as Hydroelectric power.
Why do we need reservoirs?
44. 1. Classification Based on Purpose
-Single Purpose
-Multi-Purpose
2. Classification Based on Size
-Major Reservoir
-Medium Reservoir
-Minor Reservoir
Classification of Reservoirs
47. 1. The potential reduction in peak flow by
reservoir operation increases as reservoir
capacity increases, since a greater portion
of flood water can be stored.
2. For this reason a second criterion for
evaluation of a flood-mitigation reservoir
is its storage capacity.
Size of Reservoirs
48. 3. It must no be presumed that the basic
rule of design is “the bigger the
better”, for the economic factors
control the decision.
4. The maximum capacity required is the
difference in volume between the safe
release from the reservoir and the
design and the design flood inflow.
50. Location: Brgy. San Lorenzo,
Norzagaray Bulacan Phils.
Dam and spillways:
Impound – Angat River
Height: 131m (430 ft.)
Length: 568m (1864 ft.)
Width(base): 550m (1800ft)
Reservoir:
Creates- Angat Reservoir
Total Capacity- 850 Million cu.m.
Angat Dam
51. Location: Bokod, Benguet
Type of Dam – Central Core Rock-fill
Enbankment
Impounds – Agno River
Height – 129m
Length – 452m
Width(base) – 8.5m
Spillways – 8
Reservoir
Creates – Ambuklao reservoir
Total capacity – 327, 170, 000 cu.m
Active capacity – 258 , 000, 000
cu.m
Catchment area – 690 sq.km
Surface area – 7.7 sq.km
AmbuklaoDam
52. Location : Pantabangan, Nueva
Ecija
Type of Dam: Enbankment,
Earthfill
Impounds: Pampanga River
Height –107 m
Length –1615m
Elevation at Crest –232m
Width(crest) – 12m
Width(base) – 535m
Dam Volume – 12 million cu.yd(9,
174, 658 cu.m.)
Pantabangan Dam
Reservoir Creates: Pantabangan
Lake
Total Capacity: 2, 996, 000, 000
cu.m
Active Capacity: 2, 083, 000, 000
cu.m
Catchment Area: 853 sq.km
Surface Area: 69. 62 sq. km
Normal Elevation: 230 m (755ft.
Max)
53. Location: Greater
Lagro, Quezon City
Impounds – Tullahan
River
Total Capacity – 50.5
Million cu.m
La Mesa Damand Reservoir
Metro Manila and its
sorrounding areas are
divided into two water
concessionaries :
Maynilad water (red)
and Manila water
(blue)
54. SanRoqueDam
Location: San Manuel and San
Nicholas Pangasinan and Itagon,
Benguet Phils.
Dam And Spillways
• Impounds- Agno River
• Height – 200 m(660ft.)
• Length – 1, 130 m (3,710ft.)
Total Capacity – 835 million cu.m
55. 1. Streamflow forecast are necessary in
planning reservoir operations for flood
mitigation.
2. A flood mitigation reservoir has its maximum
potential for flood reduction when it is
empty.
3. Third operational problem develops when
flows in excess of natural flows are released
from a reservoir and synchronize at some
point downstream with flood flows from a
tributary.
Operational Problems
56. References
Water Resources Systems Planning and
Management by S.K. Jain and V.P. Singh
Wikipedia : Category, Dams in the
Philippines
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