Lake Armington Dam dam
Lake Armington Dam
Lake Armington Dam, located in Piermont, New Hampshire, is a concrete structure completed in 1900 primarily for recreation purposes. With a height of 9 feet and a length of 220 feet, the dam controls the flow of Eastman Brook and creates a reservoir with a maximum storage capacity of 2,678 acre-feet. The dam's spillway, which is uncontrolled and 88 feet wide, helps manage potential flooding events by allowing excess water to flow safely downstream.
Managed by the New Hampshire Department of Environmental Services' Dam Bureau, the Lake Armington Dam is regulated, inspected, and enforced by the state to ensure its safety and compliance with regulations. Despite being classified with a significant hazard potential, the dam is currently assessed to be in fair condition as of November 2016. The risk assessment for the dam is moderate, with emergency action plans in place to address any potential issues that may arise. Overall, Lake Armington Dam serves as a vital structure for both water resource management and recreational activities in the area, attracting enthusiasts of water resources and climate to its picturesque surroundings.
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 Lake Armington Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Connecticut River At Wells River | 4,230 cfs | → |
| Baker River Near Rumney | 302 cfs | → |
| Wells River At Wells River | 199 cfs | → |
| Pemigewasset River At Woodstock | 681 cfs | → |
| East Branch Pemigewasset River At Lincoln | 440 cfs | → |
| Ompompanoosuc River At Union Village | 16 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lake Armington Dam.
Boat launches
- Armington Lake Boat Launch
- Oliverian Boating Site
- Olivarian Road 99, Benton
- Upper Baker Pond Boat Launch
- Lower Baker Pond Boat Launch
- Indian Pond Boat Launch
Campgrounds
- Ore Hill Tentsite
- Jeffers Brook Shelter
- Underhill Campsite
- Hexacuba Shelter
- Bugbee Landing Campsite
- Harkdale Farm Campsite
Paddle runs
- Woodstock/Thornton Town Line To Thornton Railroad Bridge
- Thornton Railroad Bridge To Bridgewater/Bristol Town Line
- Headwaters At Profile Lake To Southern Boundary Of Franconia Notch State Park
- Begins In Franklin To Sewall's Island
- Source Above Fr 55 To Proclamation Boundary (Stony Brook)
- Headwaters To Folsom Brook
Track Lake Armington 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 Lake Armington Dam
Where does the data for Lake Armington 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 Significant 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 Lake Armington Dam.