Documented northern snakehead water in Harford County, Maryland. Gunpowder-Patapsco drainage. 1 USGS specimen record (2026); status: reported. Location verified from the USGS Nonindigenous Aquatic Species database.
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Other Maryland waters
Allen PondAnacostia RiverAnacostia River just south of BladensburgBack CreekBack RiverBaltimore Inner HarborBear CreekBear Neck Creek
Coordinates are approximate, for finding the general area. Snakehead is an invasive species — regulations on catching, keeping, transporting and killing it vary by state and change often. Never move a live snakehead between waters. Always confirm current rules with your state wildlife agency before you fish.