Pomeroy Flood Control Site #3 dam
Pomeroy Flood Control Site #3
Pomeroy Flood Control Site #3, also known as Pomeroy Reservoir Site #3, is a state-owned flood control structure located in Tolland, Connecticut. Designed by USDA NRCS, this earth dam stands at a height of 36 feet and has a length of 524 feet. Completed in 1960, it serves as a crucial component in managing flood risk along McIntyres Brook, with a storage capacity of 710 acre-feet and a maximum discharge of 4,320 cubic feet per second.
The dam's primary purpose is flood risk reduction, with a spillway width of 15 feet and uncontrolled spillway and outlet gates. Despite its fair condition assessment in 2015, the site poses a high hazard potential, emphasizing the importance of regular inspections and maintenance. With the oversight of state regulatory agencies like DEEP, Pomeroy Flood Control Site #3 plays a vital role in safeguarding the surrounding area from potential flooding events, demonstrating a moderate risk level according to the risk assessment conducted.
Water resource and climate enthusiasts will find Pomeroy Flood Control Site #3 a fascinating case study in flood control infrastructure, showcasing the collaboration between state agencies and federal designers to mitigate flood risks in the region effectively. Its strategic location in West Stafford, along with its significant storage capacity and hydraulic features, highlights the critical role it plays in protecting communities and infrastructure from the impacts of extreme weather events. As a well-regulated and inspected structure, it stands as a testament to the importance of proactive flood management measures in ensuring the safety and resilience of the local environment.
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 Pomeroy Flood Control Site #3 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Broad Brook At Broad Brook | 25 cfs | → |
| Connecticut River At Thompsonville | 34,000 cfs | → |
| Mount Hope River Near Warrenville | 90 cfs | → |
| Chicopee River At Indian Orchard | 1,900 cfs | → |
| Willimantic River Near Coventry | 419 cfs | → |
| Hockanum River Near East Hartford | 105 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Pomeroy Flood Control Site #3.
Boat launches
- Wilbur Cross Highway Union
- Bolton Lake (Lower)
- Kings Island (Connecticut River)
- Bigelow Pond
- South End Bridge Agawam
- Coventry Lake
Campgrounds
- Wilderness Lake Campground
- Brialee
- Beech Grove 5
- Westover Arb Military
- Primitve Camping Area
- Highland Campground
Fishing spots
- Trout Hatchery
- Lake Washington Fishing Area
- Great Brook Reservoir
- Lower Fulton Park Pond
- Baker Cove
- Twotree Island Channel
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 Pomeroy Flood Control Site #3 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 Pomeroy Flood Control Site #3
Where does the data for Pomeroy Flood Control Site #3 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 Pomeroy Flood Control Site #3.