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Open-File Report 2008–1198

Prepared in cooperation with the Mississippi Department of Environmental Quality, U.S. Department of Agriculture-Natural Resources Conservation Service, Mississippi Department of Transportation, U.S. Department of Agriculture-U.S. Forest Service, and Mississippi Automated Resource Information System

Development of a Watershed Boundary Dataset for Mississippi

By K. Van Wilson, Jr., Michael G. Clair II, D. Phil Turnipseed, and Richard A. Rebich

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ABSTRACT

The U.S. Geological Survey, in cooperation with the Mississippi Department of Environmental Quality, U.S. Department of Agriculture-Natural Resources Conservation Service, Mississippi Department of Transportation, U.S. Department of Agriculture-Forest Service, and the Mississippi Automated Resource Information System, developed a 1:24,000-scale Watershed Boundary Dataset for Mississippi including watershed and subwatershed boundaries, codes, names, and drainage areas. The Watershed Boundary Dataset for Mississippi provides a standard geographical framework for water-resources and selected land-resources planning. The original 8-digit subbasins (hydrologic unit codes) were further subdivided into 10-digit watersheds and 12-digit subwatersheds—the exceptions are the Lower Mississippi River Alluvial Plain (known locally as the Delta) and the Mississippi River inside levees, which were only subdivided into 10-digit watersheds. Also, large water bodies in the Mississippi Sound along the coast were not delineated as small as a typical 12-digit subwatershed. All of the data—including watershed and subwatershed boundaries, hydrologic unit codes and names, and drainage-area data—are stored in a Geographic Information System database.

First posted December 11, 2009

SIM 3020 presents information on drainage and hydrography in the form of U.S. Geological Survey hydrologic unit boundaries for water-resource 2-digit regions, 4-digit subregions, 6-digit basins, 8-digit subbasins, 10-digit watershed, and 12-digit subwatersheds in Mississippi. The methods used in the development of watershed and subwatershed boundaries for Mississippi are presented in OFR 2008-1198. Table 1 of the report lists the 8-digit subbasin, 10-digit watershed, and 12-digit subwatershed codes, names, and drainage area sizes in an Excel spreadsheet.

For additional information contact:
Director, Mississippi Water Science Center
308 South Airport Road
Jackson, MS 39208-6649
http://ms.water.usgs.gov/

Part or all of this report is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge.


Suggested citation:

Wilson, K.V., Jr., Clair, M.G. II, Turnipseed, D.P., and Rebich, R.A., 2009, Development of a Watershed Boundary Dataset for Mississippi: U.S. Geological Survey Open-File Report 2008–1198, 8 p.



Contents

Abstract

Introduction

Purpose and Scope

Acknowledgments

Study Area Description

Methods

Results

Summary

References


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