Hell Hollow Pond Dam dam
Hell Hollow Pond Dam
Hell Hollow Pond Dam, located in Voluntown, Connecticut, is a state-regulated structure with a primary purpose of serving as a Fish and Wildlife Pond. The dam, classified as an Earth type dam, stands at a height of 10 feet and spans a length of 400 feet. It has a storage capacity of 53 acre-feet, providing essential water resources for the surrounding area.
Despite its low hazard potential, the condition assessment of Hell Hollow Pond Dam is currently listed as "Not Rated," indicating a need for further evaluation. The Emergency Action Plan (EAP) for the dam was last revised in 2005, highlighting the importance of updating emergency protocols as part of risk management measures. With its location in New London County, this dam plays a critical role in maintaining the ecological balance of the area and supporting local wildlife habitats.
Water resource and climate enthusiasts will find Hell Hollow Pond Dam to be a fascinating structure that not only serves as a vital water source but also contributes to the preservation of fish and wildlife in the region. As efforts are made to ensure the safety and integrity of the dam through regular inspections and potential updates to the EAP, this landmark remains an important component of Connecticut's water infrastructure.
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 Hell Hollow Pond Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Quinebaug River At Jewett City | 766 cfs | → |
| Wood River Near Arcadia | 36 cfs | → |
| Little River Near Hanover | 29 cfs | → |
| Shetucket River At Taftville | 631 cfs | → |
| Pendleton Hill Brook Near Clarks Falls | 4 cfs | → |
| Nooseneck River At Nooseneck | 9 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Hell Hollow Pond Dam.
Boat launches
- Beachdale Pond
- Jeffrey Lane Griswold
- Beach Pond
- Butts Bridge Road Canterbury
- Glasgo Pond State Boat Launch
- Lovell Lane 50, Canterbury
Campgrounds
- Dyer Woods Nudist Campgrounds
- Highland Campground
- Mystic Koa Holiday
- Camp Hoffman
- Laurel Lock Camp
- 315 - Burlingham
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
- Begins Below The Tailrace Of The Lower Collinsville Dam To The Route 187 Bridge
Track Hell Hollow Pond 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 Hell Hollow Pond Dam
Where does the data for Hell Hollow 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 Low 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 Hell Hollow Pond Dam.