USGS
science for a changing world

13 Common Regions - Watersheds, States, and Counties with HUC-2 Watersheds -

135W wow
I I




120W 115W 110W 105W
Cplumbiae


 


Northwest

 



Souris- 


Missouri 

6

Missouri

 

 

Basin

 

Colorado "gRI'o'fGrande

 

Alaska

 

U.S. Department of the Interior
U.S. Geological Survey

 

9 Lower 3, 

Arkansas- White-Red

 

. I Mississippi
Grande- as In?

Texas Gulf 5

7 Lower f,
Miss'ssippi I

 

a Q7 
=33

Islands
13 

 

 

Texas-Gulf 1. 




 

V,
AppalachIan

Atlantic Gulf

South
A tlantic-Gulf

. 1

AtlantIc?,

 

 

Puerto Rico 8. Virgin Islands
of the United States
(Region 2)

 

 




1

Map 5 As of February 15, 2018