Mattanawcook Pond dam
Mattanawcook Pond
Mattanawcook Pond in Maine plays a crucial role in flood risk reduction, with its concrete dam standing at a height of 13 feet and completed in 1918. The pond has a storage capacity of 2363 acre-feet and a normal storage level of 1772 acre-feet, covering a surface area of 832 acres and draining a 28-square mile area. The dam is regulated by the Maine Emergency Management Agency (MEMA) and undergoes regular inspections to ensure its structural integrity.
Located along Mattanawcook Stream in Penobscot County, Mattanawcook Pond not only serves as a flood risk reduction structure but also provides other environmental benefits. With a low hazard potential and a condition assessment of "Not Rated," the pond is a valuable asset in the region's water resource management. It is a private-owned facility and has a spillway width of 26 feet, offering a controlled release of water during high flow events. The dam's emergency action plan status and risk assessment information are currently not available, but its importance in mitigating flood risks is evident.
In the care of the New England District of the US Army Corps of Engineers, Mattanawcook Pond stands as a historic and functional infrastructure for water resource management in Maine. With a primary purpose of flood risk reduction, the pond's role in protecting downstream areas and maintaining water levels showcases its significance in climate resilience efforts. As climate change impacts continue to challenge water resources, the management and maintenance of structures like Mattanawcook Pond are essential for ensuring the safety and sustainability of communities in the region.
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 Mattanawcook Pond -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Penobscot River At West Enfield | 14,300 cfs | → |
| Mattawamkeag River Near Mattawamkeag | 2,750 cfs | → |
| Piscataquis River At Medford | 2,240 cfs | → |
| East Branch Penobscot River At Grindstone | 2,700 cfs | → |
| Kenduskeag Stream Near Bangor | 206 cfs | → |
| Grand Lake Stream At Grand Lake Stream | 317 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mattanawcook Pond.
Boat launches
- Lake Street Lincoln
- Aldrich Point Road Lincoln
- Folsom Pond Road 500, Lincoln
- West Broadway 735, Lincoln
- Dickey Moore Road 170, Medway
- Medway Road Millinocket
Campgrounds
- Mattawamkeag Wilderness Park
- Katahdin Shadows Campground
- Remote Site 5k
- Remote Site 5j
- Remote Site 4i
- Remote Site 3h
Paddle runs
- Hay Brook To Bridge Above Medway At State Route 157
- Ambajejus Falls To The End Of North And South Twin Lakes
- Headwaters To Mouth At West Branch Pleasant River
- Headwaters To Confluence With West Branch Penobscot River
- Headwaters To Confluence With Penobscot River, East Branch
- Bowlin Camps To Hay Brook
Track Mattanawcook Pond 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 Mattanawcook Pond
Where does the data for Mattanawcook Pond 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 Mattanawcook Pond.