Kennebec River at Augusta
Flood levels
Official flood levels at this gauge: action stage begins at 10.0 ft; minor flooding begins at 12.0 ft; moderate flooding begins at 17.0 ft; major flooding begins at 25.0 ft.
| Action stage | 10.0 ft |
|---|---|
| Minor flooding | 12.0 ft |
| Moderate flooding | 17.0 ft |
| Major flooding | 25.0 ft |
Highest recorded crests
- 34.1 ft on Apr 2, 1987 (historic crest)
- 30.7 ft on Mar 20, 1936 (historic crest)
- 26.9 ft on Dec 19, 2023 (historic crest)
- 20.4 ft on May 2, 2023 (historic crest)
What the water does
National Weather Service impact statements for this gauge, in the Weather Service's own words.
| 12.0 ft | Minor flooding occurs. Water floods parking lots along Front Street in Augusta. |
|---|---|
| 14.0 ft | Water reaches 2 feet deep in parking lots on Front Street in Augusta. |
| 16.0 ft | Water reaches 2 feet deep in parking lots on Front Street. |
| 17.0 ft | Moderate flooding occurs. Impacts expanding into multiple residential and commercial buildings along Front Street in downtown Augusta. |
| 20.0 ft | Flood comparable to May of 2023. |
| 24.0 ft | Northern Avenue flooded. Water impacts the lower steel on the railroad bridge. |
| 25.0 ft | Major flooding occurs. Northern Avenue flooded. Properties on Bond Street at the intersection with Water Street in Augusta flood from a combination of the Kennebec River and Bond Brook. |
| 25.5 ft | Flood waters impact the undercarriage of the Calamut Bridge in Augusta. |
| 26.0 ft | Mount Vernon Avenue flooded if high flows present along Bond Brook. |
| 27.0 ft | Flood comparable to December of 2023. Transportation and utilities severely affected. |
| 32.0 ft | Floodwaters reach properties off Willow Street. Properties severely flooded along Front Street and around Bond Brook in downtown Augusta. |
| 34.0 ft | Comparable to the historic flood level reached in April 1987. Properties severely flooded along Front Street. Water rises up to Calumet Bridge. |
| 37.7 ft | A level more than 3 feet higher than any known flood. Unprecedented flooding with water near the base of Memorial Bridge. |
Forecast office: NWS Gray · River Forecast Center: Northeast River Forecast Center.
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Nearby stations and gauges
- Kennebec River at Hallowell NWS gauge · 2.3 mi
- Gardiner NOAA tide station · 5.9 mi
- Kennebec River at Gardiner NWS gauge · 6.1 mi
- Cobbosseecontee Stream at Gardiner NWS gauge · 6.2 mi
- Sheepscot River at North Whitefield NWS gauge · 11.0 mi
- Kennebec River at North Sidney NWS gauge · 11.5 mi