Mutton Ridge Dikes 6 dam
Mutton Ridge Dikes 6
Mutton Ridge Dikes 6, 7, and 8, located on the St. Lawrence River in Massena, New York, were designed by Chas. T. Main and completed in 1958 for hydroelectric and navigation purposes. These earth dams, with a height of 23 feet and a length of 7300 feet, provide storage of up to 803,000 acre-feet of water and cover a surface area of 37,500 acres. Despite their low hazard potential, the risk assessment indicates a high risk level of 2, prompting the need for ongoing monitoring and management measures.
Owned by the state of New York and regulated by the Federal Energy Regulatory Commission, Mutton Ridge Dikes are inspected regularly to ensure their structural integrity and safety. With six associated structures and a drainage area of 300,000 acres, these dikes play a crucial role in managing water resources and supporting the region's energy needs. Although the condition assessment is not available, the emergency action plan and risk management measures are in place to address any potential hazards and ensure the safety of the surrounding community.
As part of the New York District of the US Army Corps of Engineers, Mutton Ridge Dikes 6, 7, and 8 are vital components of the region's water infrastructure. With their strategic location on the St. Lawrence River, these dikes contribute to the efficient operation of the hydroelectric facilities and facilitate navigation in the area. Their historical significance and ongoing maintenance highlight the importance of sustainable water resource management and climate resilience efforts 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 Mutton Ridge Dikes 6 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Grass River At Chase Mills Ny | 1,200 cfs | → |
| Raquette River At Raymondville Ny | 2,980 cfs | → |
| St. Regis River At Brasher Center Ny | 1,290 cfs | → |
| Little Salmon River At Bombay Ny | 120 cfs | → |
| W Br St. Regis R Nr Parishville Ny | 386 cfs | → |
| Oswegatchie River Near Heuvelton Ny | 2,280 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mutton Ridge Dikes 6.
Boat launches
- Wilson Hill Causeway Saint Lawrence County
- Ny 131 Saint Lawrence County
- Long Sault Parkway 15417, Ingleside
- Mcginnis Road 398, Saint Lawrence County
- Lakeshore Drive Morrisburg
- Long Sault Parkway 15702, Long Sault
Track Mutton Ridge Dikes 6 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 Mutton Ridge Dikes 6
Where does the data for Mutton Ridge Dikes 6 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 Mutton Ridge Dikes 6.