Pemigewasset River Levee dam
Pemigewasset River Levee
The Pemigewasset River Levee, located in Lincoln, New Hampshire, is a vital structure owned by the local government to reduce flood risk along the East Branch of the Pemigewasset River. Completed in 1960, this earth levee stands at a height of 15 feet and spans 1882 feet in length. With a high hazard potential but rated as satisfactory in condition assessment, the levee is regulated, permitted, inspected, and enforced by the New Hampshire Department of Environmental Services Dam Bureau.
This critical flood risk reduction infrastructure plays a crucial role in protecting the surrounding area from potential inundation and serves as a defense against high water levels during extreme weather events. Despite its moderate risk assessment, the Pemigewasset River Levee continues to meet regulatory guidelines and is subject to regular inspections to ensure its operational readiness. With its primary purpose focused on flood risk reduction and its location in the Grafton County of New Hampshire, this structure is an essential component of the region's water resource and climate resilience efforts.
As climate change continues to impact water resources and weather patterns, the maintenance and upkeep of structures like the Pemigewasset River Levee are essential for safeguarding communities against the increasing threat of flooding. With a designated emergency action plan and satisfactory condition assessment, this levee stands as a testament to proactive flood risk management and underscores the importance of sustainable infrastructure development in the face of a changing climate.
Dam data reference
Condition Assessment
- Satisfactory
- No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
- Fair
- No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action.
- Poor
- A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency.
- Unsatisfactory
- A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
- Not Rated
- The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Hazard Potential Classification
- High
- Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
- Significant
- Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
- Low
- Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
- Undetermined
- Dams for which a downstream hazard potential has not been designated or is not provided.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Pemigewasset River Levee -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| East Branch Pemigewasset River At Lincoln | 440 cfs | → |
| Pemigewasset River At Woodstock | 681 cfs | → |
| Ammonoosuc River At Bethlehem Junction | 253 cfs | → |
| Baker River Near Rumney | 302 cfs | → |
| Pemigewasset River At Plymouth | 1,690 cfs | → |
| Connecticut River At Wells River | 4,230 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Pemigewasset River Levee.
Boat launches
- Mirror Lake Boat Launch
- Echo Lake Boat Launch
- Olivarian Road 99, Benton
- Oliverian Boating Site
- Stinson Lake Boat Launch
- French Pond Boat Launch
Campgrounds
Paddle runs
- Woodstock/Thornton Town Line To Thornton Railroad Bridge
- Headwaters At Profile Lake To Southern Boundary Of Franconia Notch State Park
- Thornton Railroad Bridge To Bridgewater/Bristol Town Line
- Begins In Franklin To Sewall's Island
- Sewall's Island To Manchester Street Bridge
Track Pemigewasset River Levee in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Pemigewasset River Levee
Where does the data for Pemigewasset River Levee come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the High hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Pemigewasset River Levee.