Telos dam
Telos
Telos, located in Maine along the Allagash Stream, is a state-owned hydroelectric dam with a primary purpose of generating power. Built in 1890, this historic structure stands at a height of 20 feet, with a hydraulic height of 16 feet and a length of 240 feet. Despite its age, Telos still holds a storage capacity of 105,200 acre-feet, with a normal storage level of 10,100 acre-feet and a surface area of 11,200 acres.
While Telos has a low hazard potential, its condition assessment is noted as poor, with the last inspection taking place in November 2011. The dam's emergency action plan status, risk assessment, and other management measures are not currently available. Despite these concerns, the dam remains under state regulation and inspection, with enforcement and permitting processes in place. The surrounding area of Piscataquis County in Maine benefits from Telos' contribution to the region's water resource management and climate resilience efforts.
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 Telos -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Seboeis River Near Shin Pond | 401 cfs | → |
| East Branch Penobscot River At Grindstone | 2,780 cfs | → |
| North Branch Penobscot River Nr Pittston Farm | 302 cfs | → |
| Aroostook River Near Masardis | 1,660 cfs | → |
| St. John River At Ninemile Bridge | 1,780 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Telos.
Boat launches
- Grand Lake Road Piscataquis County
- Its 85 Penobscot County
- Grand Lake Road Penobscot County
- Sherman Lumber Co Road Penobscot County
- Poulin Road Maine
- Lunkasoo Road Penobscot County
Campgrounds
- Little Coffeelos Tentsite
- North Branch Bunkhouse
- N.W. Cove Tentsite
- South Branch Pond - Baxter State Park
- South Branch Pond Campground
- Pine Point Tentsite
Paddle runs
- Headwaters To Confluence With Penobscot River, East Branch
- Grand Lake Matagamon To Bowlin Camps
- Headwaters To Confluence With Penobscot River, East Branch
- Headwaters To Confluence With West Branch Penobscot River
- Bowlin Camps To Hay Brook
- Golden Road Bridge (Approx. 2 Miles Below Lobster Stream) To Confluence With Pine Stream
Track Telos 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 Telos
Where does the data for Telos 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 Telos.