Mt. Holyoke College Lower Pond Dam dam
Mt. Holyoke College Lower Pond Dam
The Mt. Holyoke College Lower Pond Dam, located in South Hadley, Massachusetts, is a private dam primarily used for recreational purposes. Completed in 1900, this earth dam stands at a height of 24 feet and has a storage capacity of 68 acre-feet. The dam spans 240 feet in length and creates a surface area of 5.1 acres, serving as a picturesque backdrop for outdoor activities along the Stony Brook.
Regulated by the Department of Conservation and Recreation, the dam has a high hazard potential but is currently in fair condition as of the last assessment in 2016. Despite its moderate risk assessment, the dam meets regulatory guidelines and undergoes frequent inspections to ensure public safety. With a controlled spillway and no outlet gates, the Mt. Holyoke College Lower Pond Dam remains a vital feature in the local ecosystem, providing both recreational and environmental benefits to the community.
As a significant structure in the New England District, this dam represents a harmonious blend of human intervention and natural resources, showcasing the importance of water management in mitigating climate-related challenges. Its role in maintaining water storage and regulating flow on the Stony Brook underscores the interconnectedness of water resources and climate resilience, making it a valuable asset for water resource and climate enthusiasts alike.
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 Mt. Holyoke College Lower Pond Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Connecticut R At Interstate 391 Bridge At Holyoke | 17,400 cfs | → |
| Chicopee River At Indian Orchard | 1,210 cfs | → |
| Mill River At Northampton | 37 cfs | → |
| Westfield River Near Westfield | 371 cfs | → |
| Swift River At West Ware | 42 cfs | → |
| Westfield River At Knightville | 149 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mt. Holyoke College Lower Pond Dam.
Boat launches
- Mount Tom Road 900-978, Easthampton
- Water Street 266-334, Springfield
- Old Apremont Way, Westfield
- Kellogg Hill Road, Hatfield
- Red Bridge Road 16, Wilbraham
- West Street 121, Springfield
Campgrounds
- Westover Arb Military
- Koa Weathampton
- Dar State Forest
- Chester - Blanford State Forest
- Primitve Camping Area
- Federated Womens' Club State Forest Primitive Campsite
Fishing spots
Paddle runs
- The Massachusetts-Connecticut State Line In Hartland To The Confluence With The Salmon Brook Main Stem
- The Confluence Of The East And West Branches To The Confluence With The Farmington River In East Granby
- Begins Below The Tailrace Of The Rainbow Dam To The Confluence With The Connecticut River
- The Hartland Headwaters To The Confluence With The Salmon Brook Main Stem
- New Hartford/Canton Town Line To The Confluence With The Nepaug River
- The Confluence With The Nepaug River To A Point 0.2 Miles Below The Lower Collinsville Dam Tailrace
Track Mt. Holyoke College Lower 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 Mt. Holyoke College Lower Pond Dam
Where does the data for Mt. Holyoke College Lower 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 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 Mt. Holyoke College Lower Pond Dam.