流域建模系統 （WMS） 的所有階段的流域水文和液壓系統綜合圖形模

環境。 WMS 包括功能強大的工具來自動建模過程如自動的流域分、 幾

何參數計算、 地理資訊系統覆蓋計算 （CN、 雨量深度、 粗糙度係數

等）、 地形資料截面提取和更多 ！ 該發行所的 WMS 8 版軟體現在支援

水文建模與港燈-1 (港燈 HMS) 合理方法 TR-55 從事 TR-20 MODRAT OC

理性和 HSPF。 支援的水力模型包括港燈 RAS、 SMPDBK 和行政長官優

質 W2。 現在，可以進行 （包括通道液壓系統與地下水相互用） 的

2D 集成的水文建模與 GSSHA。 基於地理資訊系統的資料處理框架中

這一切將使流域建模和映射比以往任何時候更容易的任務該程式的

模組化設計使使用者可以選擇允許使用者選擇只有這些水文建模能力

所需的自訂群組合中的模組。其他WMS模組可以購買，並可以隨時添

加。 軟體動態將在運行時連結到這些後續模組—自動向該軟體添加額外

的建模能力。

　

Overview

The Watershed Modeling System (WMS) is a comprehensive graphical modeling environment for all phases of watershed hydrology and hydraulics.  WMS includes powerful tools to automate modeling processes such as automated basin delineation, geometric parameter calculations, GIS overlay computations (CN, rainfall depth, roughness coefficients, etc.), cross-section extraction from terrain data, and many more!  With the release of WMS 8, the software now supports hydrologic modeling with HEC-1 (HEC-HMS), TR-20, TR-55, Rational Method, NFF, MODRAT, OC Rational, and HSPF. Hydraulic models supported include HEC-RAS, SMPDBK, and CE QUAL W2. 2D integrated hydrology (including channel hydraulics and groundwater interaction) can now be modeled with GSSHA.  All of this in a GIS-based data processing framework will make the task of watershed modeling and mapping easier than ever before

　

Automated Watershed Delineation

Using digital terrain data, WMS can automatically delineate a watershed and sub-basins.  As part of the delineation process, basin data such as area, slope, mean elevation, maximum flow distance, and many other commonly-used hydrologic parameters are automatically computed.  A new Delineation Wizard has been added to WMS to guide first-time or novice users of the software through the delineation process.  However, many advanced features and options are included in WMS:

Use DEMs (grids) or TINs for delineation. You can easily manipulate the
     elevation data in either type of dataset.

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 in the watershed.

Override derived basin boundaries to match your knowledge of the watershed.

Graphical User Interface

Thanks to the graphical tools of WMS, with standard MS Windows functionality, building models and viewing results is very easy and intuitive. All modeling parameters are entered through interactive graphics and easy-to-use dialog boxes. Though the software reads and writes native model input/output files, there is no need to worry about formatting text files to get the models to run nor will you need to search through text output files to find the results from the model run.

The Data Tree Window of WMS has been developed to give you GIS-style, quick access to data layers and display settings.  By simply clicking on data layers you can:

Turn display on/off

Convert data to other formats/types

Project data to a different coordinate system

Control display settings

Set the active data set for editing