Watershed software

• The Precipitation Runoff Modeling System (PRMS) is a modular design, distributed parameter, physical process watershed model developed to evaluate the effects of various combinations of precipitation, climate, and land use on watershed response. To use, it is suggested that you download the beta version of PRMS2010 (current as of December 7, 2009).
  Leavesley, G.H., Markstrom, S.L., Viger, R.J., and Hay, L.E., 2005, USGS Modular Modeling System (MMS) - Precipitation-Runoff Modeling System (PRMS) MMS-PRMS, in Singh, V., and Frevert, D., eds., Watershed Models: Boca Raton, FL, CRC Press, p. 159-177.
  
  
• The Modular Modeling System provides a flexible method for identifying the most appropriate modeling approaches given a specific set of user needs and constraints in order to create an "optimal" model.
  Leavesley, G.H., Restrepo, P.J., Markstrom, S.L., Dixon, M., and Stannard, L.G., 1996 (updated March 1998 for software version 1.1), The modular modeling system - MMS: User's manual: U.S. Geological Survey Open File Report 96-151, 142 p.
  
  
• Water, Energy, and Biogeochemical Model (WEBMOD), can be used to simulate the processes involved with water quantity and quality in watersheds with diverse hydroclimatology, soils, and management practices.
  Webb, R.M.T., Linard, J.I., and Wieczorek, M.E., 2006, The Water, Energy, and Biogeochemical Model (WEBMOD): A TOPMODEL application developed within the Modular Modeling System: Proceedings of the 3rd Federal Interagency Hydrologic Modeling Conference, Reno, Nevada, April 2-6, 2006, ISBN 0-9779007-0-3. (76 KB)
  
  
• Weasel is a GIS grapical-user-interface designed to be used in watershed modeling.
  Viger, R.J., and Leavesley, G.H., 2007, The GIS Weasel User's Manual: U.S.Geological Survey Techniques and Methods Book 6, chap. B4, 201 p. (15 MB)
  
  
• GSFLOW is a surface/groundwater interactions model that couples the USGS groundwater flow model MODFLOW with PRMS.
  Markstrom, S.L., Niswonger, R.G., Regan, R.S., Prudic, D.E., and Barlow, P.M., 2008, GSFLOW - Coupled ground-water and surface-water flow model based on the integration of the Precipitation-Runoff Modeling System (PRMS) and the Modular Ground-Water Flow Model (MODFLOW-2005): U.S. Geological Survey Techniques and Methods 6-D1, 240 p. (8.5 MB)
  

Also see Water Resources Applications Software for other available USGS software and related material (data and documentation) that may be useful in watershed research. [For articles in Adobe® (.PDF) format, please note that you can download a free copy of Adobe® Acrobat® Reader® here. Also see, Information for users with disabilities, if applicable.]