Winnekenni Basin Dam dam
Winnekenni Basin Dam
The Winnekenni Basin Dam, located in Haverhill, Massachusetts, is a crucial part of the local water supply infrastructure. Completed in 1970, this earth dam stands at a height of 10 feet and has a hydraulic height of 7 feet. With a storage capacity of 75 acre-feet and a normal storage level of 55 acre-feet, the dam plays a vital role in managing water resources in the area, especially during times of drought or increased demand.
Owned and regulated by the local government and the Department of Conservation and Recreation, the Winnekenni Basin Dam is inspected regularly to ensure its structural integrity and functionality. Despite being classified as a low hazard potential structure with a satisfactory condition assessment, the dam is also deemed to have a moderate risk level, indicating the need for ongoing risk management measures and preparedness protocols. While the dam has an uncontrolled spillway type and no associated locks, it serves as a critical component for water management and conservation in the region.
As a tributary of the Merrimack River, the Winnekenni Basin Dam not only provides essential water supply functions but also contributes to the overall ecosystem health of the area. With its strategic location and importance in water resource management, this dam serves as a reminder of the delicate balance between human infrastructure needs and environmental conservation efforts in the face of changing climate patterns and water resource challenges.
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 Winnekenni Basin Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Parker River At Byfield | 9 cfs | → |
| Spicket River Near Methuen | 16 cfs | → |
| Spicket River At North Salem | 0 cfs | → |
| Ipswich River Near Ipswich | 72 cfs | → |
| Exeter River At Haigh Road | 52 cfs | → |
| Beaver Brook At North Pelham | 31 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Winnekenni Basin Dam.
Boat launches
- Stanley Drive 2-4, Haverhill
- South River Street, Haverhill
- West Main Street 206, Georgetown
- Attitash Avenue 39, Merrimac
- Great Pond Road 1939, North Andover
- Country Pond Boat Launch
Campgrounds
- Windham Town Forest Tent Platforms
- Salisbury State Park Reservation
- Camp Evergreen
- Tidewater Campground
- Remote Campsite
- Grotonwood
Paddle runs
Track Winnekenni Basin 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 Winnekenni Basin Dam
Where does the data for Winnekenni Basin 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 Winnekenni Basin Dam.