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Important for you to know:

  • New to WDFN: explore current and historic water data available in your area of interest and filter to find monitoring locations that collect the water data you need through Explore USGS Water Data. To learn more, read our announcement on the Water Data for the Nation blog.

Hydrological Unit: Gunpowder-Patapsco

HUC Name
0206000301 Winters Run-Bush River
0206000302 Romney Creek-Frontal Chesapeake Bay
0206000303 Upper Gunpowder Falls
0206000304 Middle Gunpowder Falls
0206000305 Lower Gunpowder Falls
0206000306 Gunpowder River-Frontal Chesapeake Bay
0206000307 Back River-Frontal Chesapeake Bay
0206000308 North Branch Patapsco River
0206000309 Gwynns Falls
0206000310 South Branch Patapsco River
0206000311 Patapsco River
0206000312 Patapsco River-Frontal Chesapeake Bay
Monitoring Locations