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Multiple Purpose Dam & Reservoir. Objectives. Describe real-time water control mission Introduce new Corps Water Management System (CWMS) Concepts Components Models Products Applications Questions ??. Perspective. Corps regulates 700 reservoirs nationwide
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Objectives • Describe real-time water control mission • Introduce new Corps Water Management System (CWMS) • Concepts • Components • Models • Products • Applications • Questions ??
Perspective • Corps regulates 700 reservoirs nationwide • Real-time water control management decisions are driven by observed data & forecasted conditions • There is need for a swift, accurate, & reliable data management system to support real-time decision making
Julie’s District Slide Susquehanna & Potomac River Basins
Water Control Mission To regulate reservoir projects, in real time, for in-lake and downstream benefits in accordance with authorized project purposes
Project Purposes & Benefits Flood Control Recreation Water Supply Water Quality Hydropower Flow Augmentation (Navigation)
Real-TimeWater Control Data Precipitation Observed Downstream Flow Downstream Flood Level Reservoir Discharge
Water Control Management SERVERS Weather Forecast Data Processing Data Storage Modeling Observed Data Public and Cooperators Field Office Instructions Water Control Management Decisions
Corps Water Management System An integrated system of hardware, software, and communication resources supporting the Corps’ real-time water control management mission
CWMS Development • HEC - system developer • CURG - requirements, design, & testing • Status • Concepts: mid-1990’s • Development: 1997 to 2001 • Field deployment: 2001 to 2002 • Current version: 1.3
CWMS Components Data Base Data Collection Watershed Modeling Information dissemination Data Visualization
Data Acquisition • Collect: • Real-time data: observed stream flow, precipitation, temperature, water quality, gate settings, reservoir levels, etc. • Static data: physical data for model development • Decode • Validate • Transform
Data Storage • ORACLE is CWMS database • Interfaces with other databases (incl DSS) • Accessible by multiple users • Modeling • Extracts data for analyses • Posts results for decision-making
Data Dissemination • Common information source • Data & information placed on WEB-based platform • Available to Corps users & outside interests • Real-time availability
Watershed Modeling (Hydrology) (Storage) HMS ResSim FIA RAS (Damages) (Hydraulics) Watershed Modeling
HEC-HMSHydrologic Modeling System Computes runoff from observed & forecasted precipitation
HEC-RESSIM Reservoir Simulation System Simulates reservoir regulation using inflow hydrographs & project characteristics
HEC-RASRiver Analysis System Analyzes river hydraulics to compute water depth, velocity, & inundation boundaries
HEC-FIAFlow Impact Analysis Assesses damages & benefits based on river stage
Real-Time Forecast I see Hurricane Ivan in your future.
Threshold Bars Cautionary Stage Above Flood Stage
Plots Inflow Outflow
Time of Forecast Time of Forecast Forecast Results Lake Elevation Inflow Outflow
CWMS Applications • Real-time watershed forecasts • Water control decision support • Emergency planning and response • Project planning (new projects, alternative projects, modified regulation) • Post-event analyses (benefits) • Flood plain studies
CWMS Corps Water Management System