Weekly swim report · August 21, 2026
Maryland swim report
On August 21, 2026 the warmest USGS water reading in Maryland was 81°F at POTOMAC RIVER NEAR WASH, DC LITTLE FALLS PUMP STA; no water-related NWS hazards are active.
Warmest water
The 5 warmest of 19 sensors reporting a water temperature in Maryland today. Station names open the official monitoring page.
- #1POTOMAC RIVER NEAR WASH, DC LITTLE FALLS PUMP STAUSGS gauge · 3,230 ft³/s81°F 27°C8 hrs ago
- #2SUSQUEHANNA RIVER NEAR DARLINGTON, MDUSGS gauge80°F 26°C9 hrs ago
- #3POTOMAC RIVER AT POINT OF ROCKS, MDUSGS gauge · 3,890 ft³/s78°F 26°C9 hrs ago
- #4CHOPTANK RIVER NEAR GREENSBORO, MDUSGS gauge · 46 ft³/s76°F 24°C9 hrs ago
- #5MONOCACY RIVER NEAR DICKERSON, MDUSGS gauge · 471 ft³/s75°F 24°C8 hrs ago
Active hazards in Maryland
No water-related NWS hazards are active in Maryland right now. Checked live against the National Weather Service alert feed.
Where to swim in Maryland
The most-reviewed, well-rated water destinations in Maryland — check each one’s live conditions before you go.
4.5(3,496)Gunpowder Falls State Park Hammerman Area
Gunpowder River hub for picnics & kayaking, with rentable picnic shelters, fishing & swimming.
4.7(2,489)Seneca Creek State Park
This 6,300 acre park of forest & farmlands offers hunting, fresh water fishing & hiking trails.
4.7(2,458)National Harbor
Development along the Potomac River featuring a large Ferris wheel, restaurants, shopping & events.
4.7(2,190)Rock Creek Regional Park
Parkland with multiple hiking trails & lakeshore wildlife-watching, plus playgrounds & boat rentals.
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Conditions are for general information only and can change quickly. Always judge the water in person and follow posted advisories and local guidance before swimming or paddling.

