Pawtuckaway Lake Dollof Dam dam
Pawtuckaway Lake Dollof Dam
Pawtuckaway Lake Dollof Dam, located in Nottingham, New Hampshire, is a state-owned structure that plays a crucial role in regulating the Pawtuckaway River. Built in 1842, this Earth-type dam stands at a height of 28 feet and spans a length of 414 feet, with a storage capacity of 11,700 acre-feet. With a primary purpose of recreation, the dam provides opportunities for water-based activities on the lake, covering a surface area of 900 acres.
Despite its historical significance and recreational importance, the Pawtuckaway Lake Dollof Dam is currently rated as having a high hazard potential and poor condition assessment. The last inspection in March 2020 revealed the need for maintenance and potential risks associated with the dam structure. The dam is regulated by the NHDES Dam Bureau, with inspections conducted every two years to ensure safety and compliance with state regulations.
As water resource and climate enthusiasts continue to monitor the Pawtuckaway Lake Dollof Dam, there is a growing emphasis on risk assessment and management measures to address the dam's deteriorating condition. With a moderate risk level assigned to the dam, stakeholders are working towards implementing necessary improvements and emergency preparedness plans to mitigate potential hazards and ensure the long-term safety of this vital water resource infrastructure.
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 Pawtuckaway Lake Dollof Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Exeter River At Haigh Road | 52 cfs | → |
| Lamprey River Near Newmarket | 119 cfs | → |
| Oyster River Near Durham | 11 cfs | → |
| Isinglass R At Rochester Neck Rd | 53 cfs | → |
| Winnicut River At Greenland | 17 cfs | → |
| Spicket River At North Salem | 0 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Pawtuckaway Lake Dollof Dam.
Boat launches
- Pawtuckaway Pond Boat Launch
- Onway Lake Boat Launch
- Canaan Back Road Barrington
- Swains Lake Boat Launch
- Phillips Pond Boat Launch
- Greenwood Pond Boat Launch
Campgrounds
- Remote Campsite
- Saddleback Campground
- Old Stage Campground
- Windham Town Forest Tent Platforms
- Tidewater Campground
- Salisbury State Park Reservation
Paddle runs
Track Pawtuckaway Lake Dollof 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 Pawtuckaway Lake Dollof Dam
Where does the data for Pawtuckaway Lake Dollof 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 High 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 Pawtuckaway Lake Dollof Dam.