Developing a Comprehensive Water Management System

6th International Conference on Flood Management (ICFM6)

Christopher Dunn, P.E., D.WRE, Director Hydrologic Engineering Center, CEIWR-HEC

16 September 2014 Sao Paulo, Brazil

US Army Corps of Engineers BUILDING STRONG®

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History of Flood Risk Management in the Corps (Value to the Nation)

n  Since the Flood Control Act of 1917, one of the primary Missions of the USACE is to provide flood risk management: ● During Flood Episodes ● Studies and Implement Flood Risk Reduction Measures

n  Flood Control to Flood Damage Reduction to Flood Risk Management

n  Corps has reduced flood risk/damage by implementing many structural and nonstructural measures. (B/C = 7.92)

n  Procedures and Programs ● meet changing needs of the country ● utilize new science & technology

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HEC-FDA Flood Damage Reduction Analysis

n  Corps primary planning tool for FRM n  HEC-FDA helps the Corps answer the question, "Which

proposed flood risk management plan is the best from an economic standpoint?" ●  Evaluate the existing condition ●  Analyze alternative damage reduction plans

n  Compare plans using Expected Annual Damage (EAD) and damage reduction benefits.

n  Software originated in 1992; continuous improvements over the years with Risk Analysis added in 1997 and last certified in 2012.

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Data Collection Database

Modeling

Information dissemination

Visualization

Corps Water Management System (CWMS)

An integrated system of hardware, software, and communication resources supporting Corps' real-time water control mission.

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CWMS Corps Water Management System

n  Real-Time Decision Support for Corps Water Management

n  Floods to droughts and everything in between

n  700+ Multipurpose Reservoirs and Flow Control Structures, thousands of miles of Levees

n  To achieve the full range of authorized purposes from all of our projects

n  Publicly available through HEC-RTS (Real-time Simulation)

Weather Radar

Operational Decisions

Inundation Forecasts

Real-Time Fully Integrated Hydrologic Models

Streamgages

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Watershed Modeling

Data Collection Database

Modeling

Information dissemination

Data Visualization

RAS (Hydraulics)

FIA (Consequences)

ResSim (Storage)

HMS (Hydrology)

Modeling

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n  Computes damage to structures and other contents of the floodplain (including agricultural) given river stages and damage relationships.

n  Computes damages and benefits between different scenarios, and with and without project conditions.

n  Estimates life loss n  Will be discussed in Session 6

River

Level

21

22

23

24

25

26

STA

GE

(F

T)

DAMAGES ($1000)0 100 200 300 400 500 600

Consequence Analysis (HEC-FIA)

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Communicating Risk Inundation Mapping on Structure Inventory

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