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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: Upper Monocacy River

HUC Name
020700090501 Alloway Creek
020700090502 Piney Creek
020700090503 Cattail Branch-Monocacy River
020700090504 Owens Creek
020700090505 Little Hunting Creek-Big Hunting Creek
020700090506 Broad Run-Monocacy River