Diamond Hill Reservoir dam
Diamond Hill Reservoir
Located in Cumberland, Rhode Island, Diamond Hill Reservoir, also known as Pawtucket Upper Reservoir, is a vital water supply source for the surrounding area. Built in 1971, this earth dam stands at a height of 76 feet and has a storage capacity of 15,680 acre-feet. With a surface area of 390 acres and a maximum discharge of 3,100 cubic feet per second, the reservoir plays a crucial role in managing water resources and providing for the community's needs.
Managed by local government authorities, Diamond Hill Reservoir is regulated by the state and undergoes regular inspections to ensure its structural integrity. The dam's hazard potential is classified as high, but its condition assessment is rated as fair. Despite this, the reservoir continues to serve its primary purpose of water supply effectively, with a normal storage capacity of 11,000 acre-feet. With Burnt Swamp Brook serving as its primary source, the reservoir supports both environmental and community needs in the region.
As a key component of the water infrastructure in Providence County, Diamond Hill Reservoir has become a significant feature of the landscape, providing not only water security but also opportunities for recreation and environmental conservation. With its strategic location and crucial role in water management, the reservoir stands as a testament to the importance of sustainable water resource practices in the face of changing climate conditions. For water resource and climate enthusiasts, Diamond Hill Reservoir serves as a prime example of how infrastructure can support both human needs and environmental health in a rapidly changing world.
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 Diamond Hill Reservoir -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Blackstone River At Woonsocket | 441 cfs | → |
| Blackstone R At Roosevelt St At Pawtucket Ri | 459 cfs | → |
| Branch River At Forestdale | 68 cfs | → |
| Woonasquatucket River At Centerdale | 25 cfs | → |
| Charles River At Medway | 74 cfs | → |
| Moshassuck River At Providence | 16 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Diamond Hill Reservoir.
Boat launches
- Falls Pond
- Olney Pond
- Lincoln Woods
- Farnum Pike 334, Smithfield
- Norton Reservoir Launch
- Beach Street Sharon
Track Diamond Hill Reservoir 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 Diamond Hill Reservoir
Where does the data for Diamond Hill Reservoir 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 Diamond Hill Reservoir.