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Patapsco River at Ellicott City

National Weather Service gauge ELPM2 · Maryland · Baltimore County · 39.2683, -76.7939

Flood levels

Official flood levels at this gauge: action stage begins at 121.5 ft; minor flooding begins at 122.5 ft; moderate flooding begins at 125.0 ft; major flooding begins at 127.0 ft.

Action stage121.5 ft
Minor flooding122.5 ft
Moderate flooding125.0 ft
Major flooding127.0 ft

Highest recorded crests

What the water does

National Weather Service impact statements for this gauge, in the Weather Service's own words.

122.0 ftWater exceeds the banks and approaches an access road adjacent to 8000 Main Street in Ellicott City.
124.0 ftMain Street in Ellicott City begins to flood both near 8000 Main Street and near the intersection of Main Street and Maryland Avenue.
125.0 ftMain Street in Ellicott City is flooded near the railroad bridge with water either approaching or entering buildings. Backwater flooding may be occurring further upstream if local rainfall has occurred.
127.0 ftMajor flooding is occurring in lower Old Town Ellicott City. The flooding will be even more significant if local rainfall has occurred, causing additional backwater flooding.

Forecast office: NWS Sterling · River Forecast Center: Middle Atlantic River Forecast Center.

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