Neponset River at Norwood, MA
River level and flood forecast · Norfolk County
The river is 2.7 ft below flood stage (9 ft).
Forecast to fall to 6.0 ft by Thu, Oct 15, 8 AM.
Flow: 58 cubic feet per second (USGS).
Much higher than normal for October 13.
Usual for October 13: 9 to 28 cubic feet per second (the middle half of 87 years).
The last 7 days and the forecast
NWS forecast issued Mon, Oct 12, 11:14 AM. Forecasts change as rain falls and as upstream water arrives.
Get flood alerts for this river
An email when the National Weather Service forecasts Neponset River at Norwood to flood, when it floods, and when it's over.
Flood stages
| Major flood stage | 11 ft |
| Moderate flood stage | 10 ft |
| Flood stage | 9 ft |
| Action stage | 8 ft |
| Record crest (August 19, 1955) | 14.65 ft |
What floods at each level
From the National Weather Service, highest first.
- 12 ftSignificant flooding is expected along the river in Walpole and Norwood. If evacuations are needed, do so immediately. Know alternate routes for travel in case your normal route becomes flooded. Norwood Memorial Airport is substantially impacted. A portion of Route 27 in Walpole near the commuter rail station is impassable. Backwater flooding occurs on Neponset Street in Canton. Floodwaters affect homes along Dean Street in Norwood near Route 1.
- 11.5 ftFlooding impacts homes and businesses along the river in Walpole and Norwood, including homes along the river on Dean Street in Norwood near Route 1. A portion of Route 27 in Walpole near the commuter rail station is impassable. Backwater flooding occurs on a portion of Neponset Street in Canton. Flooding also occurs at the Norwood Memorial Airport.
- 11 ftFlooding impacts homes and businesses along the river in Walpole and Norwood, including homes along the river on Dean Street in Norwood near Route 1. A portion of Route 27 in Walpole near the commuter rail station is impassable. Norwood Memorial Airport is substantially impacted.
- 10.5 ftFlood waters reach homes along the river on Dean Street in Norwood near Route 1. Flooding may also affect a portion of Route 27 in Walpole near the commuter rail station.
- 10 ftMinor flooding affects homes along the river on Dean Street near Route 1 in Norwood. Widespread lowland flooding can also be expected.
- 9 ftMinor lowland flooding occurs along the Neponset River in Norwood.
Highest crests on record
- 14.65 ft — August 19, 1955
- 11.32 ft — November 5, 1955
- 11.16 ft — March 30, 2010
- 11.07 ft — March 15, 2010
- 11.05 ft — July 24, 1938
Recent crests: 9.04 ft (January 13, 2024) · 9.41 ft (January 10, 2024) · 9.07 ft (December 19, 2023) · 9.46 ft (June 28, 2020) · 11.16 ft (March 30, 2010)
Highest flow on record
1,490 cubic feet per second — August 19, 1955. From the USGS's yearly peaks since 1938.
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (NRWM3); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.