Greenwood Lake Dam dam
Greenwood Lake Dam
Greenwood Lake Dam, located in North Attleboro, Massachusetts, is a Federal-owned structure managed by the Fish and Wildlife Service for the primary purpose of maintaining a Fish and Wildlife Pond. Built in 1854, this Rockfill dam stands at a height of 18 feet and spans 600 feet in length, with a storage capacity of 626 acre-feet and a surface area of 128 acres. Despite its age, the dam is in satisfactory condition according to the last inspection conducted in September 2015.
The dam's controlled spillway, with a width of 96 feet, helps regulate water discharge, ensuring the safety of downstream areas along the Bungay River. With a hazard potential rated as high and a risk assessment indicating a very high risk level, the dam requires ongoing monitoring and maintenance to mitigate potential risks. While the dam has not been modified since 1996, it is subject to regular inspections every three years to assess its structural integrity and overall condition. In case of emergencies, the dam lacks an Emergency Action Plan preparedness, highlighting the importance of establishing comprehensive risk management measures.
As a significant component of the local water resource infrastructure, Greenwood Lake Dam serves not only as a habitat for fish and wildlife but also as a recreational area for the community. With its historical significance and critical role in water management, the dam underscores the importance of balancing conservation efforts with public safety and environmental stewardship in the face of evolving climate challenges.
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 Greenwood Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Wading River Near Norton | 26 cfs | → |
| Blackstone R At Roosevelt St At Pawtucket Ri | 459 cfs | → |
| Blackstone River At Woonsocket | 441 cfs | → |
| Charles River At Medway | 74 cfs | → |
| Ten Mile River At Pawtucket Ave @ E Providence | 49 cfs | → |
| Threemile River At North Dighton | 68 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Greenwood Lake Dam .
Boat launches
- Falls Pond
- Norton Reservoir Launch
- Beach Street Sharon
- Olney Pond
- Lincoln Woods
- Lakeside Drive 62-136, Bridgewater
Track Greenwood Lake 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 Greenwood Lake Dam
Where does the data for Greenwood Lake 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 Greenwood Lake Dam .