Aziscohos dam
Aziscohos
Aziscohos, located in Oxford County, Maine, is a hydroelectric dam on the Magalloway River that was completed in 1911. With a height of 74 feet and a length of 880 feet, it has a storage capacity of 321,195 acre-feet and a normal storage of 220,000 acre-feet. The dam has a high hazard potential and a moderate risk assessment rating, making it a crucial structure for water resource management in the region.
Managed by the Federal Energy Regulatory Commission, Aziscohos plays a significant role in generating hydroelectric power while also providing flood control and water storage capabilities. The dam features a combination of buttress, earth, and gravity structures with a multi-arch core type, supported by rock and soil foundations. The spillway, with a width of 236 feet, is uncontrolled, and the dam is equipped with two other controlled outlet gates.
Despite its age, Aziscohos remains a key component of the local water infrastructure, ensuring the sustainable use of water resources in the area. Its strategic location and design make it a crucial asset for climate resilience efforts, highlighting the importance of effective dam management and maintenance in safeguarding against potential hazards and ensuring the continued availability of water for various purposes.
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 Aziscohos -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Diamond River Near Wentworth Location | 592 cfs | → |
| Androscoggin River At Errol | 3,060 cfs | → |
| Connecticut R Below Indian Stream Nr Pittsburg | 616 cfs | → |
| Ellis River At South Andover | 703 cfs | → |
| Swift River Near Roxbury | 442 cfs | → |
| Upper Ammonoosuc River Near Groveton | 1,010 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Aziscohos .
Track Aziscohos 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 Aziscohos
Where does the data for Aziscohos 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 Aziscohos .