Patapsco River near Elkridge at Patapsco Valley State Park, MD

The last 7 days and the forecast

NWS forecast issued Sun, Dec 31, 7 PM. Forecasts change as rain falls and as upstream water arrives.

Flood stages

What floods at each level

From the National Weather Service, highest first.

• 21 ftWater approaches structures.
• 20 ftWashington Boulevard begins to flood at the Elkridge/Halethorpe border.
• 19 ftWater covers the entrance park at Patapsco Valley State Park.
• 17 ftA low spot near the end of Levering Avenue begins to flood.
• 15 ftWater begins to cover a portion of River Road in Patapsco Valley State Park. Large portions of the park begin to flood near the playground off Gunn Road.
• 10 ftWater begins to cover riverside trails in Patapsco Valley State Park.
• 9 ftWater spills over the banks but no impacts are observed.

Highest crests on record

1. 24.76 ft — May 27, 2018
2. 23.78 ft — July 31, 2016
3. 21.66 ft — September 7, 2011
4. 21.15 ft — April 30, 2014
5. 18.47 ft — January 31, 2013

Recent crests: 16.21 ft (August 12, 2020) · 16.04 ft (March 22, 2019) · 16.8 ft (December 16, 2018) · 15.22 ft (September 10, 2018) · 17.24 ft (August 4, 2018)

Up and down the river, and nearby

• UpstreamPatapsco River near Catonsville, MD
• East Branch Herbert Run at Arbutus, MD
• Dead Run near Catonsville, MD
• Gwynns Falls at Washington Blvd in Baltimore, MD
• Dead Run at Franklintown, MD
• Dead Run at Woodlawn, MD
• Dead Run Tributary at Woodlawn, MD
• Sawmill Creek at Glen Burnie, MD