Upper Kimball Pond Dam dam
Upper Kimball Pond Dam
Upper Kimball Pond Dam, also known as Webb Pond Dam, is a state-owned structure located in Chatham, New Hampshire. Built in 1800, this earth dam stands at a height of 10 feet and spans 230 feet in length, with a storage capacity of 1145 acre-feet. The primary purpose of the dam is for recreation, offering visitors a serene setting for outdoor activities in the surrounding area.
Despite its historical significance, Upper Kimball Pond Dam poses a high hazard potential and is currently rated in poor condition, with a risk assessment of moderate. The dam is regulated by the New Hampshire Department of Environmental Services Dam Bureau, which conducts inspections every 2 years to ensure its safety and compliance with state regulations. In the event of an emergency, the dam lacks an Emergency Action Plan (EAP) and may require further risk management measures to mitigate potential risks to downstream communities.
With its picturesque location on TR Lower Kimball Pond, Upper Kimball Pond Dam serves as a vital water resource for the region, providing recreational opportunities and supporting the local ecosystem. Climate and water resource enthusiasts will find this dam an intriguing subject for further study, as it highlights the intersection of historical infrastructure, environmental stewardship, and the importance of dam safety in the face of changing climate conditions.
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 Upper Kimball Pond Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Saco River Near Conway | 1,420 cfs | → |
| Wild River At Gilead | 158 cfs | → |
| Saco River At Cornish | 7,160 cfs | → |
| Bearcamp River At South Tamworth | 164 cfs | → |
| Androscoggin River Near Gorham | 2,950 cfs | → |
| Little Androscoggin River Near South Paris | 125 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Upper Kimball Pond Dam.
Boat launches
- Conway Lake Boat Launch
- Basin Brook Dam Boat Launch
- Upper Pea Porridge Pond Boat Launch
- Denmark Road 99, Denmark
- Eaton Road 2984, Eaton
- Power House Road, Bridgton
Campgrounds
- Province Pond Shelter
- Fiddlehead Campground Checkin And Camp Store
- Fiddlehead Campground Showers
- Fiddlehead Campground B9
- Mountain Pond Shelter
- Doublehead Cabin
Track Upper Kimball Pond 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 Upper Kimball Pond Dam
Where does the data for Upper Kimball Pond 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 Upper Kimball Pond Dam.