Hapgood Pond Dam dam
Hapgood Pond Dam
Hapgood Pond Dam, located in Londonderry, Vermont, is a federal-owned structure managed by the USDA Forest Service. Built in 1980, the dam serves as a water supply source and is situated on Flood Brook, with a height of 20 feet and a length of 128 feet. With a normal storage capacity of 43 acre-feet and a maximum discharge of 318 cubic feet per second, the dam plays a crucial role in managing water resources in the region.
Although the dam has a low hazard potential and is not currently rated for its condition, it underwent structural modifications in 2000 to ensure its continued safety and functionality. The last inspection of the dam took place in May 2014, with an inspection frequency of 10 years. The risk assessment for Hapgood Pond Dam indicates a moderate risk level (3), prompting the need for ongoing monitoring and potential risk management measures to safeguard both the dam and the surrounding area from potential hazards.
Enthusiasts of water resources and climate change will find Hapgood Pond Dam to be a fascinating case study in dam infrastructure management. With its primary purpose of water supply and its location in a picturesque natural setting, the dam represents a balance between human needs and environmental stewardship. As discussions around climate resilience and water management continue to evolve, Hapgood Pond Dam serves as a tangible example of the intersection between infrastructure, sustainability, and risk management in the face of changing environmental conditions.
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 Hapgood Pond Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| West River At Jamaica | 227 cfs | → |
| West River Below Townshend Dam Near Townshend | 46 cfs | → |
| Mettawee River Near Pawlet | 215 cfs | → |
| Black River At North Springfield | 271 cfs | → |
| Williams River Near Rockingham Vt | 170 cfs | → |
| Saxtons River At Saxtons River | 19 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Hapgood Pond Dam.
Boat launches
- Gale Meadow Road Londonderry
- Ice House Road Londonderry
- Winhall Station Road Londonderry
- Town Shed Road Manchester
- Dufresne Pond Road Manchester
- Fishing Access Road Ludlow
Campgrounds
- Hapgood Pond Recreation Area
- Hapgood Pond
- 279a Site #1
- 279 Campsite
- Emerald Lake State Park
- Winhall Brook
Fishing spots
Paddle runs
- Headwaters To Crossing Of Route 100 Near Route 155
- Confluence With Otter Creek To Ten Kilns Brook
- End Of Kendall Farm Road To Confluence With West River
- Headwaters To End Of Kendall Farm Road
- Arlington, Vt To Manchester, Vt
- Wilderness Boundary To Confluence With Batten Kill
More reservoirs
Track Hapgood 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 Hapgood Pond Dam
Where does the data for Hapgood 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 Hapgood Pond Dam.