WMS

Watershed Modeling System

Comprehensive GUI for modeling all phases of watershed hydrology and hydraulics
Powerful tools such as automated basin delineation, geometric parameter calculations
GIS overlay computations (CN, rainfall depth, roughness, etc.), cross-section extraction, etc.

Overview

WMS The Watershed Modeling System is a comprehensive hydrologic modeling environment. WMS provides tools for all phases of watershed modeling including automated watershed and sub-basin delineation, geometric parameter computation, hydrologic parameter computation (CN, time of concentration, rainfall depth, etc.) and result visualization. Used at hundreds of government agencies and private firms around the world, WMS is the most powerful tool for analysis and visualization of watersheds.

Features

The complete all-in-one watershed solution

GIS Tools
Web-based data acquisition tools
Terrain data import and editing tools
Automated watershed delineation & hydrologic modeling
Support for the most industry standard hydrologic models
Step-by-step hydrologic modeling wizard
Hydraulic modeling & floodplain mapping
Storm drain modeling
2D (Distributed) Hydrology
Integration with FHWA hydraulic calculation software
Export WMS animations to Google™ Earth

Automated watershed delineation & hydrologic modeling

Automatically delineate a watershed and sub-basins using digital terrain data
Automatically compute geometric basin data such as area, slope, mean elevation, maximum flow distance and more
With a small amount of input, compute hydrologic basin data such as time of concentration, curve number, and infiltration parameters
Industry standard equations for computing sub-basin lag times and times of concentration are included with WMS
Add any number of interior outlet points and let WMS subdivide the watershed automatically
Manipulate stream networks to represent man-made features or proposed changes to the watershed
Override derived basin boundaries to match your knowledge of the watershed

Support for most industry standard hydrologic models

A license of WMS Hydrology or greater includes an interface for the following industry standard hydrologic models:

HEC-1
HEC-HMS
TR-20
TR-55
Rational Method
MODRAT
OC (Orange County, California) Rational
OC Hydrographic
HSPF
National Streamflow Statistics
Convert and compare the results of a watershed developed for one model with any of the other models supported in WMS
Read and compare observed hydrographs with computed hydrographs

Hydraulic modeling & floodplain mapping

Define a stream centerline and bank stations
Define cross section locations
Automatically cut cross sections and derive Manning's roughness values from elevation and ground material data
Export cross sections to the HEC-RAS or Simplified Dam Break hydraulic models
Run the hydraulic model and read the water elevations back into WMS
Read water surface elevation data from a hydraulic model or manually input known water surface elevations
Create flood extents and flood depth maps using digital terrain data and water surface elevation data points
Link the peak flow or complete hydrograph from any of the WMS-supported hydrologic models to an HEC-RAS hydraulic model

Storm drain modeling

Draw a storm drain network or import a network from GIS
Compute elevations, lengths, and slopes of pipes from underlying elevation data
Link the storm drain network to your hydrologic model data
Export the hydrologic model data and the storm drain network to EPA-SWMM or XP-SWMM
Import existing EPA-SWMM or XP-SWMM files into WMS

2D (Distributed) hydrology

WMS supports 2D models:
Flood forecasting (depth and velocity over entire 2D domain)
Thunderstorm (localized rainfall) flood analysis
Surface ponding and infiltration analysis
Wetland modeling
Land use change impact modeling
Groundwater/surface-water interaction modeling
Sediment and contaminant modeling

Import what you need

USGS DEMs - download and use any format of DEM from the USGS
USGS NED data - seamless elevation data can be downloaded and read into WMS
ArcGIS Raster (ASCII format) - read elevation or attribute data in gridded format from ArcGIS
ESRI Shape files - read all shapes and attributes into WMS
DXF and DWG CAD files - WMS now supports the latest versions of DXF and DWG
TIFF, JPEG image files - images along with geo-referencing information can be read by WMS
Any data supported by ArcGIS can be read into WMS (ArcGIS license required, compatible with ArcGIS 10.0)

Modell Packages

HEC-1

Developed by the Hydrologic Engineering Center, HEC-1 is the most commonly-used lumped parameter model available. HEC-1 is designed to simulate surface runoff from a single precipitation event.

HEC-HMS

HEC-HMS is the next generation hydrologic model developed by the Hydrologic Engineering Center. Its intent is to replace HEC-1, and it features many of the same modeling capabilities as HEC-1 and additional capabilities such as the MODClark quasi-distributed (2D) hydrologic model. WMS has a fully-featured interface to the MODClark hydrologic model and includes documentation and step-by-step tutorials showing how to setup MODClark and other types of HMS models.

NSS

NSS contains all of the NFF functionality and equations as well as low flow and other probability equations.

TR-20

Developed by the NRCS, TR-20 is designed to compute surface runoff from natural or synthetic rainstorm events.

TR-55

TR-55 was developed by the NRCS as a simplified method to compute storm runoff in small, urbanized watersheds.

MODRAT

MODRAT is the specialized Modified Rational Method program used by the County of Los Angeles, California to compute surface runoff.

Rational Method

One of the simplest and best-known methods of hydrology, the Rational Method computes peak discharge from an area based on rainfall intensity and a runoff coefficient.

HSPF

The Hydrological Simulation Program - FORTRAN simulates hydrologic and water-quality processes on land surfaces, streams, and impoundments. It is Often used in the development of TMDLs.

EPA-SWMM Intg.

The EPA Storm Water Management Model (SWMM) is a dynamic rainfall-runoff simulation model used for single event or long-term (continuous) simulation of runoff quantity and quality from primarily urban areas.

XP-SWMM Intg.

xpswmm, developed by XP Software, is a comprehensive software package for modeling stormwater, sanitary and river systems. xpswmm is used by scientists, engineers and managers to develop link-node (1D) and spatially distributed hydraulic models (2D). It simulates natural rainfall-runoff processes and the performance of engineered systems that manage our water resources.

HEC-RAS

HEC-RAS is a 1D hydraulic model for computing water surface profiles for steady state or gradually varied flow.

SMPDBK

The Simplified Dam-Break (SMPDBK) was developed by the National Weather Service (NWS) for predicting downstream flooding produced by a dam failure.

GSSHA

Developed by USACE ERDC, GSSHA is a distributed (2D) hydrologic model developed for analysis of surface runoff, channel hydraulics, and groundwater interaction. Water quality and sediment transport are also supported.

CE-QUAL-W2

CE QUAL W2 is a 2D (profile) hydraulic model used for water quality analysis in rivers and reservoirs where vertical variation analysis is required.

System requirements

Operating Systems
- Windows XP (Limited Support)
- Windows Vista
- Windows 7
- Windows 8
RAM: 1 GB (8 GB or more recommended)
CPU: WMS software is CPU intensive. We recommend the fastest CPU your budget allows. A multi-core CPU may be useful for multi-tasking while WMS is running. However, WMS software does not use more than a single core at this time, so a faster dual core may provide better performance than a slower quad core CPU.
Graphics Card: For all display features to be enabled, OpenGL 1.5 must be supported. We recommend NVIDIA® Quadro® based graphics cards because of their superb OpenGL support. The use of a dedicated graphics card is strongly recommended. Integrated graphics cards are often problematic.
Display Resolution: 1024 x 768 or greater