City Pond Aka Upper Slaters Dam dam
City Pond Aka Upper Slaters Dam
City Pond, also known as Upper Slaters Dam, is a state-owned recreational water resource located in Griswold, Connecticut. Situated on the Pachaug River, this masonry dam has a length of 100 feet and a surface area of 4 acres, providing a serene setting for outdoor activities. While its primary purpose is recreation, City Pond also serves as a critical water source for the local community.
Managed by the Connecticut Department of Energy and Environmental Protection (DEEP), this dam is regulated, permitted, inspected, and enforced by the state. Despite its significance, City Pond has been assessed as being in poor condition, with a significant hazard potential. A moderate risk rating highlights the need for ongoing risk management measures and potential improvements to ensure the safety and sustainability of this water resource for both recreation and water supply purposes.
City Pond offers a valuable opportunity for water resource and climate enthusiasts to appreciate the intersection of human-made infrastructure with natural ecosystems. With its historical significance and recreational appeal, this dam serves as a reminder of the importance of responsible stewardship and management of our water resources 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 City Pond Aka Upper Slaters Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Quinebaug River At Jewett City | 936 cfs | → |
| Shetucket River At Taftville | 780 cfs | → |
| Little River Near Hanover | 35 cfs | → |
| Yantic River At Yantic | 90 cfs | → |
| Pendleton Hill Brook Near Clarks Falls | 4 cfs | → |
| Shetucket River Near Willimantic | 615 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near City Pond Aka Upper Slaters Dam.
Boat launches
- Jeffrey Lane Griswold
- Butts Bridge Road Canterbury
- Glasgo Pond State Boat Launch
- Amos Lake
- Lovell Lane 50, Canterbury
- Beachdale Pond
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 City Pond Aka Upper Slaters 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 City Pond Aka Upper Slaters Dam
Where does the data for City Pond Aka Upper Slaters 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 Significant 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 City Pond Aka Upper Slaters Dam.