Halls Pond Dam Dam
Halls Pond Dam
Halls Pond Dam in Connecticut, completed in 1900, serves as a crucial recreational resource with a primary purpose of providing leisure activities for the community. This earth-type dam stands at 16 feet tall and spans 400 feet in length, holding a storage capacity of 890 acre-feet. Situated on the Slovik Branch river, the dam has a spillway width of 19 feet and a maximum discharge rate of 550 cubic feet per second.
Despite being classified as having a significant hazard potential, the dam is currently in fair condition as of its last assessment in June 2016. The dam is regulated by the Connecticut Department of Energy and Environmental Protection (DEEP), with state-permitting, inspection, and enforcement protocols in place. The risk assessment for Halls Pond Dam is moderate, indicating a level 3 risk, although specific risk management measures are not detailed in the available data.
Water resource and climate enthusiasts may be drawn to Halls Pond Dam for its role in providing recreational opportunities while also raising awareness about the importance of dam safety and maintenance. With its historical significance and ongoing regulatory oversight, the dam serves as a focal point for both local communities and regulatory agencies in ensuring the safety and sustainability of water resources in the area.
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 Halls Pond Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Mount Hope River Near Warrenville | 4 cfs | → |
| Natchaug River At Willimantic | 73 cfs | → |
| Willimantic River Near Coventry | 32 cfs | → |
| Shetucket River Near Willimantic | 109 cfs | → |
| Little River At Harrisville | 8 cfs | → |
| Quinebaug River At Putnam | 113 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Halls Pond Dam.
Boat launches
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Campgrounds
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Fishing spots
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River runs
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About Halls Pond Dam
Where does the data for Halls Pond 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 Significant 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 below 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.
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.