Thompson Pond Upper dam
Thompson Pond Upper
Thompson Pond Upper is a picturesque water resource located in Pownal, Vermont, offering a serene setting for recreation enthusiasts and climate advocates alike. This privately owned dam, completed in 1900, stands at a height of 9 feet and spans 430 feet in length, providing a storage capacity of 140 acre-feet. The dam primarily serves the purpose of recreation, with its earth and stone core structure contributing to its fair condition assessment.
Situated on the South Stream-TR river in Bennington County, this dam is regulated and permitted by the Vermont Department of Environmental Conservation. Despite its significant hazard potential, the dam's inspection frequency of 3 years ensures its structural integrity and public safety. While the dam's current normal storage is reported as zero, its maximum storage capacity of 140 acre-feet makes it a vital resource for water management in the region.
With its rich history dating back over a century, Thompson Pond Upper stands as a testament to the enduring importance of water resources in the face of changing climate patterns. As a focal point for outdoor recreation and environmental stewardship, this dam serves as a reminder of the delicate balance between human activities and nature's resilience in sustaining our water ecosystems for generations to come.
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 Thompson Pond Upper -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Green River At Williamstown | 76 cfs | → |
| Hoosic River Near Williamstown | 195 cfs | → |
| Walloomsac River Near North Bennington | 181 cfs | → |
| Hoosic River At Adams | 69 cfs | → |
| Hoosic River Near Eagle Bridge Ny | 930 cfs | → |
| Deerfield River At Charlemont | 294 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Thompson Pond Upper.
Boat launches
- Pine Ridge Drive 27, Pownal
- South Stream Access Area Road Pownal
- Ashton Avenue North Adams
- State Fishing Access North Bennington
- Fairview Avenue 298, Wilmington
- Somerset
Campgrounds
- Sherman Brook Campsite
- Clarksburg State Park
- Historic Valley
- Stoney Ledge Group Site
- Spruce Group Site
- Birch Group Site
Track Thompson Pond Upper 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 Thompson Pond Upper
Where does the data for Thompson Pond Upper 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 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 Thompson Pond Upper.