RIVER GAUGE · UPPER MACHODOC CREEK
Upper Machodoc Creek near Dahlgren (IN MLLW)
King George County, Virginia
Water level1.34 ft
Flow—
Last readingSep 16, 2026, 5:06 PM UTC (last recorded)
Action3 ft
Minor flood3.5 ft
Moderate flood5 ft
Major flood7 ft
The past week
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What floods at each level
- 6.5 ft
Widespread shoreline inundation is occurring, with water reaching structures on both sides of the river. Cobb Island is cut off from the mainland. Numerous roads and buildings are affected.
- 5 ft
Water is expected to cover yards and docks in Dahlgren and on Cobb Island. A half foot of water covers Cobb Island Road/State Route 254, severely limiting the ability to traverse from Cobb Island to the mainland. Also water approaches structures near Cobb Island.
- 3.5 ft
Water is expected to reach yards near Cobb Island and docks near Dahlgren.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Oct 28, 2021 | 5.64 ft | — |
| Sep 10, 2018 | 4.99 ft | — |
| Sep 9, 2018 | 4.92 ft | — |
Get an alert when Upper Machodoc Creek rises
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