Gorham dam
Gorham
Gorham is a hydroelectric dam located in Coos County, New Hampshire, along the Androscoggin River. Built in 1904, this dam stands at a height of 24 feet and has a length of 775 feet. It serves a primary purpose of hydroelectric power generation and is regulated by the Federal Energy Regulatory Commission. With a storage capacity of 370 acre-feet, Gorham plays a vital role in the local water resource management, providing a low hazard potential despite its moderate risk assessment rating.
The dam features a spillway width of 300 feet and is equipped with 10 slide gates for water control. Although condition assessment details are not available, Gorham undergoes regular inspections every three years, with the last inspection conducted in June 2019. Despite its age, the dam continues to operate efficiently, contributing to the overall water infrastructure in the area. With its historical significance and ongoing role in hydroelectric power production, Gorham remains a notable structure for water resource and climate enthusiasts interested in sustainable energy solutions and water management practices.
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 Gorham -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Androscoggin River Near Gorham | 4,510 cfs | → |
| Wild River At Gilead | 1,210 cfs | → |
| Upper Ammonoosuc River Near Groveton | 1,820 cfs | → |
| Ammonoosuc River At Bethlehem Junction | 756 cfs | → |
| Androscoggin River At Errol | 1,790 cfs | → |
| Ellis River At South Andover | 1,490 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Gorham .
Boat launches
- Overlook Road 123, Milan
- Nay Pond Boat Launch
- Basin Brook Dam Boat Launch
- Milan
- Androscoggin River Boat Launch
- Androscoggin River (Pontook Reservoir) Boat Launch
Campgrounds
- Moose Brook State Park
- Trident Col Tentsite
- Rattle River Shelter
- Barnes Field Group Campground
- Dolly Copp
- Dolly Copp Campground
Track Gorham 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 Gorham
Where does the data for Gorham 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 Gorham .