Beaver Brook Dam dam
Beaver Brook Dam
Beaver Brook Dam, located in Derry, New Hampshire, serves as a recreational destination for water resource and climate enthusiasts. Completed in 1929, this concrete dam stands at a height of 6.5 feet and has a storage capacity of 107 acre-feet, providing a surface area of 40 acres for various water activities. The dam is situated on Beaver Brook and is regulated by the NHDES Dam Bureau, ensuring its safety and compliance with state regulations.
With a low hazard potential and satisfactory condition assessment, Beaver Brook Dam is considered a moderate risk structure. The dam features an uncontrolled spillway with a width of 51 feet, allowing for controlled discharge during periods of high water flow. The last inspection in October 2019 showed that the dam meets safety guidelines and is regularly monitored to prevent any potential risks. In the event of an emergency, appropriate measures are in place to ensure the safety of nearby residents and visitors.
Overall, Beaver Brook Dam offers a unique recreational experience in the heart of Rockingham County, New Hampshire. Its historical significance, combined with its modern safety measures and regulatory oversight, make it a valuable asset for both the local community and water resource enthusiasts. Whether you're interested in fishing, boating, or simply enjoying the scenic beauty of Beaver Brook, this dam provides a safe and enjoyable environment for all to appreciate.
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 Beaver Brook Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Spicket River At North Salem | 0 cfs | → |
| Beaver Brook At North Pelham | 31 cfs | → |
| Merrimack R Nr Goffs Falls | 8,350 cfs | → |
| Souhegan River At Merrimack | 235 cfs | → |
| Spicket River Near Methuen | 16 cfs | → |
| Piscataquog River Near Goffstown | 137 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Beaver Brook Dam.
Boat launches
- Beaver Lake Boat Launch
- Scobie Pond Boat Launch
- Kendall Pond Boat Launch
- Phillips Pond Boat Launch
- Massabesic Lake Boat Launch
- Robinson Pond Boat Launch
Campgrounds
- Windham Town Forest Tent Platforms
- Remote Campsite
- Saddleback Campground
- Camp Evergreen
- Tidewater Campground
- Grotonwood
Paddle runs
Track Beaver Brook Dam 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 Beaver Brook Dam
Where does the data for Beaver Brook Dam 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 Beaver Brook Dam.