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WMS - Watershed Modeling System - model interface for hydrologic models HEC-1, TR-20, NFF and Rational Method
WMS Categories: hydrological database/modeling/data analysis, model interfaces and modeling shells, surface-water models, watershed modeling
WMS - Watershed Modeling System Overview
New Release - WMS 6.1!
WMS is a state-of-the-art computer program
which utilizes digital terrain data to delineate watershed and sub-basin boundaries and computes geometric parameters used in hydrologic modeling. WMS includes tools which aid in the creation of both rural and urban watersheds with interfaces to hydrologic modeling software. WMS includes the interfaces as well as the actual following models:
- The HEC-1 and TR-20 flood hydrograph programs used by many hydrologic engineers to model the rainfall-runoff process.
- Using the TR-55
interface, a hydrograph and peak flow can be computed for each sub-basin if the basin's time of concentration, drainage area, rainfall, and curve number are given.
- National Flood Frequency (NFF) Program evaluates regression equations for estimating T-year flood-peak discharges for
rural and urban watersheds.
- The Rational Method is one of the simplest and best-known methods routinely applied in urban hydrology. The Rational Method main dialog box includes the capability to generate Intensity Duration Frequency (IDF) curves from HYDRO-35 maps (eastern US), NOAA Atlas maps (western US), or user-specified data of rainfall intensities. A kinematic wave equation, used by the Federal Highways Administration (FHA) design handbook, can be used to estimate the time of concentration from the catchment length, slope, and a Manning's roughness coefficient.
- HSPF, developed by the USGS, simulates hydrologic and water quality processes on land surfaces, streams and impoundments. HSPF is generally used to assess the
effects of land-use change, reservoir operations, point or nonpoint source treatment alternatives, flow diversions, etc.
- CEQUAL-W2 - Free interface - beta release
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