NHDPlus Version 2 Tools
NHDPlus Version 2 Documentation

Select the data region of your choice by clicking on the map below or selecting the name from the list.

National Data
Global Data

01 Northeast 02 Mid Atlantic 03N South Atlantic North 03S South Atlantic South 03W South Atlantic West 04 Great Lakes 05 Ohio 06 Tennessee 07 Upper Mississippi 08 Lower Mississippi 09 Souris-Red-Rainy 10U Upper Missouri 10L Lower Missouri 11 Ark-Red-White 12 Texas 13 Rio Grande 14 Upper Colorado 15 Lower Colorado 16 Great Basin 17 Pacific Northwest 18 California 20 Hawaii 21 Puerto Rico/U.S. Virgin Islands 22A American Samoa 22G Guam 22M Northern Mariana Islands