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Important for you to know:

  • New to WDFN: customize and keep track of your list of favorite monitoring locations and data types using the new My Favorites page. To learn more, read our announcement on our Water Data for the Nation blog.

Hydrological Unit: Middle Gunpowder Falls

HUC Name
020600030401 Little Falls
020600030402 Piney Creek-Gunpowder Falls
020600030403 Piney Run-Western Run
020600030404 Blackrock Run-Western Run
020600030405 Beaverdam Run
020600030406 Lock Raven Reservoir-Gunpowder Falls