Marcy Reservoir Dam dam
Marcy Reservoir Dam
Marcy Reservoir Dam, located in Carey Corners, New York, was completed in 1919 and stands at a height of 32 feet with a length of 564 feet. This concrete dam serves as a crucial water supply structure, providing storage for 165 acre-feet of water and covering a surface area of 16 acres. The dam regulates the flow of Crane Creek and is under the jurisdiction of the New York State Department of Environmental Conservation.
Despite being classified as having a low hazard potential, Marcy Reservoir Dam is considered to have a moderate risk level, with a condition assessment that is currently not rated. The dam has not undergone any modifications since its completion and is equipped with an uncontrolled spillway with a width of 40 feet. The last inspection of the dam took place in October 1996, highlighting the importance of regular monitoring and maintenance to ensure its safety and functionality for water resource management in the region.
In terms of regulatory oversight, the dam is subject to state permitting, inspection, and enforcement by the NYS DEC. With its historical significance and vital role in water supply management, Marcy Reservoir Dam stands as a testament to engineering ingenuity and the ongoing efforts to ensure the resilience of water infrastructure in the face of changing climate patterns and evolving environmental challenges.
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 Marcy Reservoir Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Mohawk River Below Delta Dam Near Rome Ny | 226 cfs | → |
| West Canada Creek At Kast Bridge Ny | 961 cfs | → |
| Steele Cr At Ilion Ny | 25 cfs | → |
| Oneida Creek At Oneida Ny | 30 cfs | → |
| East Branch Fish Creek At Taberg Ny | 499 cfs | → |
| West Canada Creek Near Wilmurt Ny | 292 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Marcy Reservoir Dam.
Boat launches
- Mohawk River
- Delta Lake State Park Town Of Western
- Chittning Pond
- South Washington Street Herkimer
- Lake Moraine
- Oneida Lake
Campgrounds
Track Marcy Reservoir 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 Marcy Reservoir Dam
Where does the data for Marcy Reservoir 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 Low 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 Marcy Reservoir Dam.