A strong cold front pushed through the area during the evening Dec 24th. An area of low pressure formed along this front and slid across the region. This brought some heavy showers to the region, and even a few isolated thunderstorms. Several instances of flooding resulted from this event. There were then a few large stem rivers that crept up to flood stage in the couple of days following the main event.

Flood in FREDERICK, MARYLAND
From 25-DEC-20 06:41:00 to 25-DEC-20 21:26:00 (EST-5)
Location: CERESVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The stream gage on the Monocacy River near Frederick (FRRM2) rose above flood stage during the specified timeframe, reaching a peak stream level of 19.5 feet at 2:00 PM EST.

Flood in FREDERICK, MARYLAND
From 25-DEC-20 15:54:00 to 25-DEC-20 23:54:00 (EST-5)
Location: CERESVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The stream gage on the Monocacy River near Frederick (FDKM2) rose above flood stage during the specified timeframe, reaching a peak stream level of 16.6 feet at 5:30 PM EST. At 16 feet, much of Pinecliff Park and Rivermist Park in Frederick are flooded. Buckeystown Community Park is also flooded with water approaching the parking lot. Waters are also approaching the Frederick city wastewater treatment plant and the Ballenger Creek wastewater treatment plant. Significant backwater flooding is occurring. Several roads will be closed along the river and adjoining creeks.

Flood in HOWARD, MARYLAND
From 25-DEC-20 02:51:00 to 25-DEC-20 08:12:00 (EST-5)
Location: GUILFORD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The stream gage on the Little Patuxent River in Savage rose above flood stage during the specified timeframe, reaching a peak stream level of 10.72 feet. At 10 feet, riverside trails begin to flood. Water also approaches fields off Bald Eagle Drive, and approach Brock Bridge Road.

Flood in CARROLL, MARYLAND
From 24-DEC-20 21:25:00 to 25-DEC-20 08:24:00 (EST-5)
Location: BRIDGEPORT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The stream gauge on the Monocacy River near Bridgeport indicated the river rose above flood stage during the specified timeframe, reaching a peak stream level of 13.65 feet. At 13 feet, Baptist Road near Bridgeport begins to flood.

Flood in BALTIMORE, MARYLAND
From 25-DEC-20 01:06:00 to 25-DEC-20 10:11:00 (EST-5)
Location: GLENCOE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The stream gage on Big Gunpowder Falls near Glencoe, MD, rose above flood stage during the specified time, reaching a max flood stage of 8.96 feet at 05:40 AM EST. At 9 feet Sparks Road begins to flood.

Flood in HOWARD, MARYLAND
From 25-DEC-20 02:04:00 to 25-DEC-20 08:26:00 (EST-5)
Location: ELKRIDGE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The stream gage on the Patuxent River in Elkridge rose above flood stage during the specified timeframe, reaching a peak stream level of 17.11 feet. At 16 feet, Hammonds Ferry Road floods and is closed at the Patapsco River. Backwater flooding likely also leads to the closure of Furnace Avenue in Elkridge.

Flood in MONTGOMERY, MARYLAND
From 26-DEC-20 03:25:00 to 26-DEC-20 13:52:00 (EST-5)
Location: LITTLE ORLEANS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The stream gage on the Potomac River at Edward's Ferry rose above flood stage during the specified timeframe, reaching a peak stream level of 15.25 feet at 7:45 AM EST. At 15 feet, water reaches the boat ramp and lower parking area at Edwards Ferry, and begins to inundate areas near Whites Ferry.

Flood in WASHINGTON, MARYLAND
From 25-DEC-20 04:51:00 to 26-DEC-20 05:40:00 (EST-5)
Location: BELLE GROVE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The stream gage on Conococheague Creek at Fairview, north of WIlliamsport, reached flood stage during the specified timeframe, reaching a peak stream level of 11.96 feet at 4:15 PM EST. At 12 feet, water approaches homes north of Williamsport. Some homes and a campground will also be cut off from access due to flooded roads, but the homes themselves are not flooded.

Flood in CECIL, MARYLAND
From 26-DEC-20 16:36:00 to 27-DEC-20 03:55:00 (EST-5)
Location: LAPIDUM
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The stream gage on the Susquehanna River at Conowingo Dam rose above flood stage during the specified timeframe, reaching a max stream level of 24..27 feet. At 23.7 feet, minor flooding begins in the town of Port Deposit, Maryland. At 24.8 feet, backyards and basements on Main Street and Tome's Landing begin to flood.