Ashland Pond Dam dam
Ashland Pond Dam
Ashland Pond Dam, located in Griswold, Connecticut, along the Pachaug River, is a state-regulated earth dam with a primary purpose of recreation. Completed in the year 1800, this dam has a height of 25 feet and a length of 450 feet, creating a reservoir with a storage capacity of 1000 acre-feet. The dam serves as a popular spot for recreational activities, offering a surface area of 83 acres for visitors to enjoy.
Despite its historical significance and recreational value, Ashland Pond Dam poses a high hazard potential, with a fair condition assessment as of October 2018. The dam has a maximum discharge capacity of 5335 cubic feet per second and is equipped with a spillway width of 110 feet. The dam's last inspection in October 2018 revealed a need for regular maintenance and upkeep to ensure its safety and integrity for both recreational users and downstream communities.
As a vital structure in the local water resource infrastructure, Ashland Pond Dam is under the jurisdiction of the Connecticut Department of Energy and Environmental Protection (DEEP) and is subject to regular inspections, permitting, and enforcement measures. With its picturesque location and historical significance, the dam serves as a reminder of the intersection between water resource management, recreational opportunities, and the importance of maintaining dam safety in the face of changing climate 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 Ashland Pond Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Quinebaug River At Jewett City | 918 cfs | → |
| Shetucket River At Taftville | 755 cfs | → |
| Little River Near Hanover | 34 cfs | → |
| Yantic River At Yantic | 87 cfs | → |
| Pendleton Hill Brook Near Clarks Falls | 4 cfs | → |
| Shetucket River Near Willimantic | 553 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Ashland Pond Dam.
Boat launches
- Jeffrey Lane Griswold
- Butts Bridge Road Canterbury
- Glasgo Pond State Boat Launch
- Amos Lake
- Beachdale Pond
- Lovell Lane 50, Canterbury
Campgrounds
- Highland Campground
- Laurel Lock Camp
- Mystic Koa Holiday
- Dyer Woods Nudist Campgrounds
- Youth Site 1
- Youth Site 2
Fishing spots
Paddle runs
- Begins Below The Tailrace Of The Rainbow Dam To The Confluence With The Connecticut River
- The Confluence Of The East And West Branches To The Confluence With The Farmington River In East Granby
- Begins Below The Tailrace Of The Lower Collinsville Dam To The Route 187 Bridge
- The Confluence With The Nepaug River To A Point 0.2 Miles Below The Lower Collinsville Dam Tailrace
- New Hartford/Canton Town Line To The Confluence With The Nepaug River
- The Massachusetts-Connecticut State Line In Hartland To The Confluence With The Salmon Brook Main Stem
Track Ashland 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 Ashland Pond Dam
Where does the data for Ashland 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 Ashland Pond Dam.