1 / 11

Enhanced Preprocessing Tool for Watershed Modeling in ArcGIS 8

This project aims to enhance the ArcGIS 8 preprocessor for Hydrologic Modeling System (HMS) by incorporating watershed parameters using DEM data. Users can input NRCS Curve Number, land use, soil type shapefiles, Green & Ampt parameters, and other data. The software calculates necessary parameters like Loss Rate, Watershed Routing, Baseflow, and Reach Routing, allowing users to analyze watersheds and streams efficiently. Parameters can be input directly or indirectly to the attribute table for automated processes. The tool generates HMS Basin text files for further analysis in HMS.

lydia-ball
Télécharger la présentation

Enhanced Preprocessing Tool for Watershed Modeling in ArcGIS 8

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. HMS Preprocessor: Incorporating Watershed Parameters Elizabeth Bristow CVEN 689 April 14, 2003

  2. Project Definition • Improve ArcGIS 8 preprocessor for HMS • Create watershed model based on DEM • Optional Inputs: • NRCS Curve Number shapefile • Land use and soil type shapefile • Green & Ampt parameters • others

  3. Background • CRWR-PrePro • Very complete model of watershed • Avenue-based • Works with ArcView 3.2

  4. Background • PrePro2002 • Visual Basic-based • Works with ArcGIS 8 • Less complete model of watershed • Key difference: Does not calculate watershed parameters

  5. Project Scope • Develop addition to PrePro2002 • Calculate necessary parameters: • Loss Rate • Watershed Routing • Baseflow • Reach Routing

  6. Process • No set series of events • Allows user to choose necessary events • User selects desired watersheds or streams • User chooses desired process

  7. Direct Calculation • User inputs shapefiles or grids with desired parameters • May input components of desired parameter • Program determines average value • Writes average value to attribute table • User may repeat process with other parameters or watersheds

  8. Parameter Input • Some parameters not strictly dependent on spatial data • User may input these directly to attribute table • May also input indirectly through user interface

  9. Why Input Parameters? • Saves time: • Allows user to automate process • May change parameters for more than one feature at a time • Allows tabular input

  10. Creation of HMS Model • Program writes attributes to HMS Basin text file • User opens model in HMS for further analysis

  11. Questions?

More Related