Hydrologic Engineering Center1 The Development of a Flood Warning and Response System Cameron Ackerman, P.E. Hydrologic Engineering Center, USACE.

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Presentation transcript:

Hydrologic Engineering Center1 The Development of a Flood Warning and Response System Cameron Ackerman, P.E. Hydrologic Engineering Center, USACE

Hydrologic Engineering Center2 Purpose  Provide a Flood Warning and Response System to communities along river systems Maximize response time (County Emergency Management Agency and Floodplain Residents) Use stage/elevation-based flood inundation mapping Damage estimates (expedite disaster assistance) Evacuation & flood warning plan formulation tool Educate the public on flood hazard

Hydrologic Engineering Center3 Software Development Goals  Use existing technologies as much as possible to develop the FWRS  Develop new tools and interfaces only where necessary  Maximize the use of geospatial displays  Keep the interface simple and customizable  Easily update data

Hydrologic Engineering Center4 Process Components  Forecast Information National Weather Service Forecasts  River Hydraulics Model River Analysis System (HEC-RAS), HEC-GeoRAS  Data Visualization ArcGIS – Customized Interface, Excel  Flood Damage Computations Structure Inventory  Flood Impact Response Tables

Hydrologic Engineering Center5 Study Area – Susquehanna River  4 NWS Forecast Locations Pennsylvania Sunbury Danville Bloomsburg Wilkes-Barre Northumberland County Montour County Columbia County Luzerne County

Hydrologic Engineering Center6 Study Area - San Antonio River  3 NWS Forecast Locations

Hydrologic Engineering Center7 HEC-RAS Model Creation and Calibration

Hydrologic Engineering Center8 Inundation Mapping using HEC-GeoRAS  Atlas of water surface profiles/inundation maps run to cover the range of expected events

Hydrologic Engineering Center9 Flood Warning and Response System  Customized interface to ArcGIS  Entry of forecast information  Query of inundation depths  Access impact response tables  Calculate structure damages Zoom Locations Response Tables

Hydrologic Engineering Center10 Forecast Entry – Susquehanna River  Predefined Locations for entry of Elevation or Stage Wilkes-Barre Bloomsburg Danville Sunbury

Hydrologic Engineering Center11 Forecast Entry – San Antonio River  Flexible “selection” of input locations  FWRS input form is built based on Excel sheet < Elev. < 147.5

Hydrologic Engineering Center12 Tiled Mapping  20 Tiles San Antonio River, 16 Tiles Cibolo Creek

Hydrologic Engineering Center13 Tiled Mapping  Interpolation by profile number  Backwater by water surface elevation at confluences to handle tributaries  Data stored by profile

Hydrologic Engineering Center14 Mapping Layers

Hydrologic Engineering Center15 Flood Impact Response Tables  Given a forecasted elevation: What is the expected impact? What response action should be taken?  Developed by individual local Emergency Management Agencies Excel spreadsheet May be formatted (font, color, size)

Hydrologic Engineering Center16 Flood Impact Response Tables

Hydrologic Engineering Center17 Flood Damage Analysis  Structure inventory  Depth-%Damage curves Damage Category (Susquehanna River)  Residential, commercial,... Occupancy type (San Antonio River)  Single Story Residential, 2 Story Residential, Mobile Home, Single Story Apartment, …

Hydrologic Engineering Center18 Structure Damage  Query inundation depth  Compute individual structure damage

Hydrologic Engineering Center19 System-wide Damage  Working estimate for FEMA disaster relief

Hydrologic Engineering Center20 Contact Information  Cameron Ackerman, P.E. Hydrologic Engineering Center, USACE