Tarrywile Lake Dam dam
Tarrywile Lake Dam
Tarrywile Lake Dam, nestled in the picturesque city of Danbury, Connecticut, is a vital water resource managed by the local government for recreational purposes. Built in 1900, this earth dam stands at a height of 12 feet and spans a length of 180 feet, providing a storage capacity of 100 acre-feet and covering a surface area of 13.7 acres. With a drainage area of 320 square miles and a maximum discharge of 235 cubic feet per second, the dam plays a crucial role in regulating the flow of Parks Pond Brook.
Despite its age, Tarrywile Lake Dam has been assessed as being in satisfactory condition, with a significant hazard potential. Regular inspections take place every five years to ensure its structural integrity and safety. The dam's emergency action plan is kept up to date, although specific details regarding emergency preparedness measures are not provided in the data. Overall, Tarrywile Lake Dam serves as a valuable asset for both water resource management and recreational activities in the surrounding area.
In the event of an emergency, residents and visitors can rest assured that Tarrywile Lake Dam is monitored and regulated by the Connecticut Department of Energy and Environmental Protection (DEEP). With a designated state agency overseeing its permitting, inspection, and enforcement processes, the dam is subject to rigorous state regulations to mitigate risks and ensure public safety. As climate change continues to impact water resources and infrastructure, the maintenance and upkeep of dams like Tarrywile Lake Dam are essential in safeguarding communities and ecosystems against potential hazards.
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 Tarrywile Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Ridgefield Brook At Shields Lane Nr Ridgefield | 3 cfs | → |
| Still River At Route 7 At Brookfield Center | 55 cfs | → |
| Saugatuck River Near Redding | 14 cfs | → |
| East Branch Croton River Near Putnam Lake Ny | 49 cfs | → |
| East Branch Croton River At Brewster Ny | 56 cfs | → |
| East Branch Croton River Near Croton Falls Ny | 51 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Tarrywile Lake Dam.
Boat launches
- Lake Kenosia
- Danbury Boat Launch
- Candlewood Lake (Lattins Cove)
- Lake Lillinonah (Pond Brook)
- Old Bogus Road 4, New Fairfield
- Lake Lillinonah
Campgrounds
- Youth Camp I
- Youth Camp Ii
- Youth Camp Iii
- Mountain Lakes Park
- Ward Pound Ridge Reservation
- Kettletown State Park
Fishing spots
Paddle runs
- Kent Bridge To Boardman Bridge
- Pond Downstream Of Shepaug Reservoir Dam, Marked By Service Road Bridge To Ends In Backwaters Of Lake Lillinonah, Near Roxbury Falls
- Begins Downstream Of The Borough Of Bantam, At Stoddard Road Bridge To The Confluence With The Shepaug River
- Begins Below The Tailrace Of The Lower Collinsville Dam To The Route 187 Bridge
- Falls Mountain Road In Canaan, Connecticut To Kent Bridge
- The Confluence With The Nepaug River To A Point 0.2 Miles Below The Lower Collinsville Dam Tailrace
Track Tarrywile Lake 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 Tarrywile Lake Dam
Where does the data for Tarrywile Lake 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 Tarrywile Lake Dam.