Dynamic Parameter, Water-Use, Stream and Lake Flow Routing, and Two Summary Output Modules and Updates to Surface-Depression Storage Simulation and Initial Conditions Specification Options for the Precipitation-Runoff Modeling System (PRMS)

This data release documents seven enhancements to the U.S. Geological Survey (USGS) Precipitation-Runoff Modeling System (PRMS) hydrologic simulation code: two time-series input options, two new output options, and three updates of existing capabilities. The enhancements are (1) new dynamic parameter module, (2) new water-use module, (3) new Hydrologic Response Unit (HRU) summary output module, (4) new basin variables summary output module, (5) new stream and lake flow routing module, (6) update to surface-depression storage and flow simulation, and (7) update to the initial-conditions specification. This report relies heavily upon U.S. Geological Survey Techniques and Methods, book 6, chapter B7 (http://dx.doi.org/10.3133/tm6b7) that documents PRMS version IV (PRMS-IV). Example applications of the enhancements are included in this data release.