HUC-12 Watershed Map
State
NM
CO
USGS WBD ·
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subwatersheds
Map Guide
HUC-12
each polygon = one subwatershed
HUC-8
thick line = basin boundary
HUC-4
color = subregion family
HUC-8 basin boundary
↓ Download data
Pinned HUC-8
GeoJSON
GeoPackage
CSV (attributes)
Click any subwatershed to explore it
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