Mountain Pond North Dam Dam
Mountain Pond North Dam
Mountain Pond North Dam, located in Sanbornton, New Hampshire, serves as a crucial water supply structure for the surrounding area. Constructed in 1913, this earth dam stands at a height of 14 feet and has a length of 97 feet, providing a storage capacity of 137 acre-feet. The dam is primarily regulated by the NHDES Dam Bureau and undergoes regular inspections to ensure its structural integrity and safety.
With a low hazard potential and fair condition assessment, Mountain Pond North Dam poses a moderate risk level that is actively managed to mitigate potential threats. Despite its age, the dam continues to fulfill its purpose of water supply efficiently, with a normal storage capacity of 100 acre-feet and a drainage area of 0.16 square miles. The dam's spillway, although uncontrolled, ensures a maximum discharge capacity of 168 cubic feet per second, further emphasizing its importance in managing water resources in the region.
Overall, Mountain Pond North Dam stands as a vital infrastructure for water resource management in Belknap County, New Hampshire. Its historical significance, coupled with its functional efficiency and regulatory oversight, underscores the importance of sustainable dam operations in maintaining a reliable water supply for the local community. As climate change impacts continue to affect water availability, the role of structures like Mountain Pond North Dam becomes increasingly crucial in ensuring water security for future generations.
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 Mountain Pond North Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Smith River Near Bristol | 25 cfs | → |
| Winnipesaukee River At Tilton | 367 cfs | → |
| Merrimack River At Franklin Junction | 920 cfs | → |
| Pemigewasset River At Plymouth | 272 cfs | → |
| Baker River Near Rumney | 49 cfs | → |
| Blackwater River Near Webster | 19 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mountain Pond North Dam.
Boat launches
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Campgrounds
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River runs
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More reservoirs
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About Mountain Pond North Dam
Where does the data for Mountain Pond North 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 below 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.
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.