New Wilton Reservoir Dam dam
New Wilton Reservoir Dam
The New Wilton Reservoir Dam, also known as Stockwell Brook Dam, is a vital structure located in Wilton, New Hampshire. Built in 1933, this earth dam stands at a height of 24 feet and spans a length of 123 feet, serving primarily as a water supply source. The reservoir has a maximum storage capacity of 335 acre-feet and covers a surface area of 22.1 acres, drawing water from the Stockwell Brook.
Managed by the NHDES Dam Bureau and regulated by the state of New Hampshire, this dam is inspected regularly to ensure its fair condition and significant hazard potential are addressed. With a moderate risk assessment rating, the New Wilton Reservoir Dam plays a crucial role in providing water for the local community while also being mindful of potential environmental impacts and safety concerns. Enthusiasts of water resources and climate will find this dam's history, design, and management practices fascinating as they contribute to the sustainable utilization of water in the region.
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 New Wilton Reservoir Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Souhegan River (Site Wlr-1) Near Milford | 168 cfs | → |
| Contoocook River At Peterborough | 107 cfs | → |
| Nubanusit Bk Blw Macdowell Dam Nr Peterborough Nh | 31 cfs | → |
| Souhegan River At Merrimack | 235 cfs | → |
| South Branch Piscataquog River Near Goffstown | 127 cfs | → |
| Squannacook River Near West Groton | 73 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near New Wilton Reservoir Dam.
Boat launches
- Cunningham Pond Boat Launch
- Melendy Pond Boat Launch
- Zephyr Lake Boat Launch
- Bailey Pond Boat Launch
- Contoocook River (Powder Mill Pond) Boat Launch
- Macdowell Reservoir Boat Launch
Campgrounds
- Damon Pond Campground
- Pearl Hill Campground
- Camp Wanocksett
- Mt Monadnock State Park Campground
- Lake Dennison State Park
- Grotonwood
Track New Wilton Reservoir 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 New Wilton Reservoir Dam
Where does the data for New Wilton Reservoir 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 Significant 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 New Wilton Reservoir Dam.