Welcome to RTI's WaterFALL™

RTI has built a new watershed modeling tool and decision-support platform to enable inter-active quantitative investigation of water availability and allocation at multiple geographic scales. The Watershed Flow and ALLocation (WaterFALL™) system employs a well-established hydrologic model, the Generalized Water Loading Function (GWLF) that has been modified to run on EPA’s enhanced National Hydrography Dataset (NHDPlus) hydrologic network. RTI has indexed extensive data layers onto each individual NHDPlus catchment to provide all of the input data needed to parameterize and run the GWLF model within a catchment. Routing routines are embedded to allow the cumulative water resource impacts across any number of user-selected catchments to be quantified. Advantages of this distributed model architecture include:

  • Scalability:  The model, which is based on a physically delineated network of catchments, can be run on a single catchment or any hydrologic unit upstream of a user-selected catchment up to entire watersheds.
  • Portability:  The model can be run anywhere on the NHDPlus network (i.e. the contiguous U.S.) with minimal model set up, calibration, or additional data inputs.
  • Accessibility:  The model is built on an advanced Oracle web-server delivery platform and can be accessed from almost any internet connected computer.
  • Usability:  The model employs simple graphical interfaces for spatial navigation and a variety of other tools to facilitate “what if?” analyses in real time.
  • Granularity:  The model is distributed across many very small NHDPlus catchments providing heightened sensitivity to geographic variations in land cover and climate variables across a selected study region.
WaterFALL™ Resources
Questions or comments? Please email waterfall@rti.org