Harnett Pond Dam dam
Harnett Pond Dam
Harnett Pond Dam, located in New Marlborough, Massachusetts, is a masonry dam completed in 1909 with a primary purpose of recreation. Standing at a height of 14 feet and with a storage capacity of 241 acre-feet, this dam on Harmon Brook offers a serene surface area of 34.4 acres for water enthusiasts to enjoy. The dam is regulated by the Department of Conservation and Recreation, ensuring that it meets state inspection, enforcement, and permitting requirements.
Despite its age, Harnett Pond Dam is assessed to be in fair condition with a low hazard potential. The last inspection in 2009 found the dam to be structurally sound, with an inspection frequency of every 10 years. The risk assessment for the dam is moderate (3), indicating that there are measures in place to manage any potential risks associated with the structure. The dam's spillway type is uncontrolled, and with a drainage area of 1.45 square miles, it plays a crucial role in managing water levels in the region.
Overall, Harnett Pond Dam offers a tranquil recreational area for water resource and climate enthusiasts to appreciate. With its historical significance and regulated status, it provides not only a picturesque backdrop but also a sense of safety and security for those who enjoy its waters. The dam stands as a testament to the importance of maintaining and managing water resources for both recreational and practical purposes in the Berkshire region of Massachusetts.
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 Harnett Pond Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| West Branch Farmington River Near New Boston | 59 cfs | → |
| Housatonic River Nr Ashley Falls | 563 cfs | → |
| Housatonic River Near Great Barrington | 299 cfs | → |
| Green River Near Great Barrington | 28 cfs | → |
| Still River At Robertsville | 72 cfs | → |
| Hubbard River Nr. West Hartland | 14 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Harnett Pond Dam.
Boat launches
- Wood Creek Pond Boat Launch
- Main Road, Tolland
- Highway 8 2301-2357, Becket
- Twin Lakes
- Howells Pond
- Laurel Street 515, Lee
Campgrounds
- Beartown State Forest
- Tolland State Forest
- Shaker Camp
- At Thruhiker Camping
- Race Brook Campsites
- Granville State Forest
Fishing spots
- Lower Fulton Park Pond
- Great Brook Reservoir
- Lake Quassapaug
- Squantz Pond
- Papermill Pond
- Seymour Reservoir Number 4
Paddle runs
- The Massachusetts-Connecticut Border To Falls Mountain Road In Canaan, Connecticut
- Falls Mountain Road In Canaan, Connecticut To Kent Bridge
- The Hartland Headwaters To The Confluence With The Salmon Brook Main Stem
- The Massachusetts-Connecticut State Line In Hartland To The Confluence With The Salmon Brook Main Stem
- New Hartford/Canton Town Line To The Confluence With The Nepaug River
- The Confluence Of The East And West Branches To The Confluence With The Farmington River In East Granby
Track Harnett 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 Harnett Pond Dam
Where does the data for Harnett 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 Harnett Pond Dam.