USGS

Hydrologic Unit Maps

U.S. Geological Survey, Water Supply Paper 2294

by Paul R. Seaber, F. Paul Kapinos, and George L. Knapp


Table of Contents

Abstract

Introduction

History and development

Description of the hydrologic units

Hydrologic unit codes

Hydrologic unit names

Description of the Hydrologic Unit Maps

Compilation guidelines

Basic criteria

Technical criteria

Additional specifications

Coastal boundaries

Code identification

Digitized units

Drainage areas

Review and approval

Conflicts regarding boundaries

Maintenance and updating

Uses

National Water Data Network

Cataloging and coordinating data

Other uses of Hydrologic Unit Maps

Summary

Selected bibliography

 


 

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