John D. Milne Lake Dam dam
John D. Milne Lake Dam
John D. Milne Lake Dam, located in Fairfield, Connecticut, is a concrete structure completed in 1947 with a primary purpose of water supply. Standing at a height of 70 feet and stretching 940 feet in length, this dam plays a crucial role in managing the Silvermine River's flow and providing storage capacity of 1,870 acre-feet. The dam has a spillway width of 200 feet and a maximum discharge capacity of 8,000 cubic feet per second, ensuring effective water management during periods of high flow.
Despite being assessed as in fair condition, the dam poses a high hazard potential due to its location and storage capacity. Regular inspections, with a frequency of every two years, help ensure its continued safety and functionality. While the dam has not undergone significant modifications in recent years, its risk assessment indicates a moderate level of risk, prompting the need for ongoing monitoring and management measures to mitigate potential hazards. With its critical role in water supply and management, John D. Milne Lake Dam remains a key infrastructure asset in the region, supporting the local community and environment.
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 John D. Milne Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Fivemile River Near New Canaan | 0 cfs | → |
| Norwalk R At South Wilton | 10 cfs | → |
| Saugatuck R Nr Westport | 18 cfs | → |
| Cross River Near Cross River Ny | 8 cfs | → |
| Ridgefield Brook At Shields Lane Nr Ridgefield | 2 cfs | → |
| Saugatuck River Near Redding | 6 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near John D. Milne Lake Dam.
Boat launches
- Saugatuck River
- Hillspoint Road Westport
- Roosevelt Road Westport
- Maple Way 10, Town Of North Castle
- Lake Kenosia
- Seagate Road 3, Greenwich
Campgrounds
- Ward Pound Ridge Reservation
- Mountain Lakes Park
- Youth Camp Ii
- Youth Camp Iii
- Youth Camp I
- Croton Point 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
- The Confluence With The Nepaug River To A Point 0.2 Miles Below The Lower Collinsville Dam Tailrace
- Falls Mountain Road In Canaan, Connecticut To Kent Bridge
Track John D. Milne 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 John D. Milne Lake Dam
Where does the data for John D. Milne 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 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 John D. Milne Lake Dam.