M C Whatmore Lake Dam dam
M C Whatmore Lake Dam
M C Whatmore Lake Dam, located in Grant Corner, Westchester, New York, is a privately-owned earth dam completed in 1964 primarily used for recreational purposes. The dam stands at a height of 17 feet and has a length of 140 feet, with a maximum storage capacity of 208 acre-feet. The dam overlooks the scenic TR-Crook Brook and provides a surface area of 26 acres for various water-based activities.
Managed by the New York State Department of Environmental Conservation, the dam is considered to have a significant hazard potential, with a moderate risk assessment rating. Despite not having a condition assessment, the dam is regularly inspected every four years, with the last inspection conducted in November 2019. Additionally, the dam's spillway type is uncontrolled, with a width of 10 feet, and a maximum discharge capacity of 280 cubic feet per second.
Water resource and climate enthusiasts visiting M C Whatmore Lake Dam can enjoy recreational activities while appreciating the engineering marvel of the dam. With its picturesque location and vital role in water management, the dam serves as a reminder of the importance of sustainable water resource management in the face of changing climate patterns.
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 M C Whatmore Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Cross River Near Cross River Ny | 8 cfs | → |
| Titicus River At Purdys Station Ny | 13 cfs | → |
| Ridgefield Brook At Shields Lane Nr Ridgefield | 2 cfs | → |
| Cross River At Katonah Ny | 15 cfs | → |
| East Branch Croton River Near Croton Falls Ny | 46 cfs | → |
| West Branch Croton River Near Croton Falls Ny | 32 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near M C Whatmore Lake Dam.
Boat launches
- Lake Kenosia
- Danbury Boat Launch
- Maple Way 10, Town Of North Castle
- Candlewood Lake (Lattins Cove)
- Old Bogus Road 4, New Fairfield
- Squantz Pond
Campgrounds
- Mountain Lakes Park
- Ward Pound Ridge Reservation
- Youth Camp I
- Youth Camp Ii
- Youth Camp Iii
- Clarence Fahnestock 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
- Falls Mountain Road In Canaan, Connecticut To Kent Bridge
- 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
Track M C Whatmore 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 M C Whatmore Lake Dam
Where does the data for M C Whatmore 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 M C Whatmore Lake Dam.