Dead River Dike dam
Dead River Dike
The Dead River Dike in New Hampshire is a state-regulated structure designed for flood risk reduction along Jericho Brook. Completed in 1970, this earth dam stands at 14 feet tall and spans 1665 feet, providing a storage capacity of 2100 acre-feet. Despite its low hazard potential and satisfactory condition assessment, the dam has a high risk assessment rating of 2, indicating the need for ongoing monitoring and maintenance to ensure its effectiveness in preventing flood damage.
Located in Coos County, the Dead River Dike is managed by the NHDES Dam Bureau and undergoes regular inspections every 6 years to ensure its structural integrity. While the dam lacks a spillway and has no outlet gates, its primary purpose of flood risk reduction highlights its importance in protecting the surrounding area from potential water-related hazards. With a risk management plan yet to be fully detailed, the Dead River Dike remains a vital piece of infrastructure in the region's water resource management efforts.
As a key component of the local water management system, the Dead River Dike plays a crucial role in safeguarding the community against flooding events. With its strategic location in Congressional District 02, New Hampshire, the dam serves as a reminder of the ongoing need for climate resilience measures in the face of changing environmental conditions. By upholding state regulations and ensuring regular inspections, the Dead River Dike stands as a testament to New Hampshire's commitment to protecting its citizens and natural resources from the impacts of extreme weather events.
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 Dead River Dike -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Androscoggin River Near Gorham | 3,790 cfs | → |
| Upper Ammonoosuc River Near Groveton | 650 cfs | → |
| Wild River At Gilead | 300 cfs | → |
| Androscoggin River At Errol | 3,030 cfs | → |
| Connecticut River Near Dalton | 4,210 cfs | → |
| Ammonoosuc River At Bethlehem Junction | 351 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Dead River Dike.
Boat launches
- Overlook Road 123, Milan
- Nay Pond Boat Launch
- Milan
- Androscoggin River Boat Launch
- Androscoggin River (Pontook Reservoir) Boat Launch
- Bridge Street Guildhall
Campgrounds
- Rogers Ledge Campsite
- Milan Hill State Park
- Unknown Pond Campsite
- Unknown Pond Tentsite
- Mt Cabot Cabin
- Moose Brook State Park
Track Dead River Dike 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 Dead River Dike
Where does the data for Dead River Dike 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 Low 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 Dead River Dike.