Coon Brook Bog Dam dam
Coon Brook Bog Dam
Coon Brook Bog Dam, located in Pittsburg, New Hampshire, is a state-regulated structure managed by the NHDES Dam Bureau. Built in 1947, this earth dam stands at a height of 10 feet and spans 330 feet across Coon Brook, serving primarily for recreational purposes. With a storage capacity of 230 acre-feet and a surface area of 43 acres, the dam presents a low hazard potential but is currently assessed to be in poor condition, indicating a need for maintenance and rehabilitation.
Despite its moderate risk assessment rating, Coon Brook Bog Dam lacks a detailed emergency action plan and updated contact information, potentially posing a challenge in times of crisis. The dam's spillway type is listed as uncontrolled, with no outlet gates or locks specified. The structure's inspection frequency is every 6 years, with the last assessment conducted in August 2017, highlighting the importance of regular monitoring and maintenance to ensure its safety and functionality for both water resource management and climate enthusiasts who frequent the area.
As stakeholders continue to assess and address the dam's condition and risk management measures, there is an opportunity to enhance the structure's resilience and sustainability for the future. With proper maintenance and emergency preparedness, Coon Brook Bog Dam can continue to provide recreational benefits while safeguarding the surrounding environment and communities from potential hazards. Water resource and climate enthusiasts can play a vital role in advocating for the preservation and responsible management of this important infrastructure in Coos County, New Hampshire.
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 Coon Brook Bog Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Connecticut R Below Indian Stream Nr Pittsburg | 550 cfs | → |
| Diamond River Near Wentworth Location | 373 cfs | → |
| Androscoggin River At Errol | 3,610 cfs | → |
| Connecticut River At North Stratford | 1,740 cfs | → |
| Upper Ammonoosuc River Near Groveton | 617 cfs | → |
| Ellis River At South Andover | 383 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Coon Brook Bog Dam.
Boat launches
- First Connecticut Lake Boat Launch
- Back Lake Boat Launch
- Chemin Du Lac Saint-Malo
- Back Pond Boat Launch
- Lake Access Road Canaan
- Cottage Road Averill
Track Coon Brook Bog 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 Coon Brook Bog Dam
Where does the data for Coon Brook Bog 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 Coon Brook Bog Dam.