We developed and deployed a customizable flood forecasting and automated threat recognition and threat visualization application to meet the site-specific needs of our clients. We configure this application—which we call Aviso—with components to provide information for flood emergency response. Aviso components include:

  • Aviso FS - forecasts flows and stages using data from local real-time surface observation and radar systems. It uses familiar rainfall-runoff models, including the U.S. Army Corps of Engineers’ HEC-1 or HEC-HMS and the U.S. Environmental Protection Agency’s SWMM.
  • Aviso Watch - uses expert-system technology to examine forecasts from Aviso FS and real-time hydrometeorological data continuously, identifying flood threats, and disseminating warnings via e-mail, text messages, or web applications, using user-specified rules.
  • Aviso Mapper - presents the results of flood forecasts or water level observations in an inundation map format. To create the maps, Aviso Mapper uses GIS tools integrated with hydraulic models, executing those in real time.

We’ve implemented Aviso successfully for real-time forecasting, flood threat recognition, and/or flood threat notification. Sites include:

  • Mecklenburg County, NC.
  • Overland Park, KS.
  • Choctawhatchee-Pea River basin, AL.
  • Jefferson County, AL.
  • Boulder and Fort Collins, CO.
  • Trinity River basin, TX (for the Tarrant Regional Water District).
  • Lower Colorado River basin, TX (for the Lower Colorado River Authority).
  • Lavaca and Navidad River basins, TX (for Lavaca-Navidad River Authority).
  • Sacramento County, CA.