Watershed Characterization and Management System

Step-by-Step Tutorial Movies (requires Adobe Flash plug-in)

      Use this web-based tool to estimate effects of landuse changes, erosion control practices, and sediment erosion. 

This website makes it much easier to do these common hydrologic modeling tasks:

1)   View the interface, make delineated watershed, Change land use, download results

 [ Overview of interface | Create/delineate the watershed | download watershed and curve number maps ]

2) Estimate peak rate of runoff, imperviousness, computed time of concentration, and the corresponding rainfall depth for the watershed. [Runoff ]

3) Estimate (with current and modified landuse) average annual runoff and nonpoint source pollutant levels in the watershed. [Run LTHIA ]

4) Design a channel, culvert, sediment basin, level terraces, runoff diversion, or low water crossing for the watershed. [SedSpec ]

5) Estimate percent imperviousness in the watershed. [Imperviousness]