Cohasse Brook Reservoir Dam dam
Cohasse Brook Reservoir Dam
Located in Southbridge, Massachusetts, the Cohasse Brook Reservoir Dam serves as a vital water supply structure for the surrounding area. Completed in 1967, this earth dam stands at a height of 60 feet and has a hydraulic height of 51 feet. With a storage capacity of 1300 acre-feet, the dam primarily supports water supply purposes for the region. The reservoir covers a surface area of 0.08 square miles and has a drainage area of 1.85 square miles, making it a crucial resource for the local community.
Regulated by the Department of Conservation and Recreation in Massachusetts, the Cohasse Brook Reservoir Dam has a high hazard potential but has been assessed to be in satisfactory condition as of the last inspection in July 2016. Despite its high hazard potential, the dam poses a moderate risk, with emergency action plans in place to mitigate any potential risks. The dam's spillway type is uncontrolled, with no outlet gates or associated structures, and it is inspected every two years to ensure its structural integrity and safety. With a history of reliable water supply management, the Cohasse Brook Reservoir Dam plays a crucial role in supporting the water needs of the community while maintaining a sustainable approach to water resource management.
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 Cohasse Brook Reservoir Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Quinebaug R Bl Westville Dam Nr Southbridge | 159 cfs | → |
| Quinebaug River At Quinebaug | 161 cfs | → |
| Quinebaug R Bl E Brimfield Dam At Fiskdale | 102 cfs | → |
| French River At Webster | 7 cfs | → |
| French R At N Grosvenordale | 116 cfs | → |
| Little River Near Oxford | 4 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Cohasse Brook Reservoir Dam.
Boat launches
- Bigelow Pond
- Clark Road Extension 303, Sturbridge
- Oxford Road 195-253, Charlton
- Wilbur Cross Highway Union
- South Pond Road 143, Brookfield
- Quaboag Street 131-199, Brookfield
Campgrounds
- Brialee
- Wilderness Lake Campground
- Narragansett Council, Boy Scouts Of America, Cub World
- George Washington State Campground
- Dyer Woods Nudist Campgrounds
- Highland Campground
Fishing spots
Paddle runs
- Begins Below The Tailrace Of The Rainbow Dam To The Confluence With The Connecticut River
- The Confluence Of The East And West Branches To The Confluence With The Farmington River In East Granby
- The Massachusetts-Connecticut State Line In Hartland To The Confluence With The Salmon Brook Main Stem
- The Hartland Headwaters To The Confluence With The Salmon Brook Main Stem
- The Confluence With The Nepaug River To A Point 0.2 Miles Below The Lower Collinsville Dam Tailrace
- New Hartford/Canton Town Line To The Confluence With The Nepaug River
Track Cohasse Brook Reservoir 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 Cohasse Brook Reservoir Dam
Where does the data for Cohasse Brook Reservoir 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 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 Cohasse Brook Reservoir Dam.