Rainbow Falls Reservoir
St. Lawrence County, New York666 acresView mapDirections
No nutrient or algae sampling on record from NY DEC for this lake.
- 40 ft max depth
Rainbow Falls Reservoir in St. Lawrence County, New York has water-quality measurements published by NY DEC, shown here as reported. Maximum depth: 40 ft. Surface area: 666 acres.
Rainbow Falls Reservoir is a 666-acre lake in St. Lawrence County, New York with a maximum depth of 40 feet (7-foot average).
Source: EPA Water Quality Portal sampling records, NYSDEC. Methodology: how these readings are compared.
What Rainbow Falls Reservoir is good for
From access and monitoring records, not editorial picks.
- Deep water40 ft surveyed max depth
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Rainbow Falls Reservoir is safe to swim in today is a call for the New York Department of Environmental Conservation and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Rainbow Falls Reservoir
These are the measurements NY DEC publishes for Rainbow Falls Reservoir, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. TSI undefined.
Ask about Rainbow Falls Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
40 ft
Average depth
7.2 ft
Surface area
666 acres
Shoreline
9.8 mi
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Fishing Rainbow Falls Reservoir
Nearby Lakes in St. Lawrence County
Frequently asked questions about Rainbow Falls Reservoir
Where is Rainbow Falls Reservoir?
- Rainbow Falls Reservoir is a lake in St. Lawrence County, New York. Its water-quality measurements are published by NY DEC and shown on this page as reported.
What is the water quality of Rainbow Falls Reservoir?
- Rainbow Falls Reservoir in St. Lawrence County, New York has water-quality measurements published by NY DEC, shown here as reported. Maximum depth: 40 ft. Surface area: 666 acres.
Is Rainbow Falls Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Rainbow Falls Reservoir?
- Rainbow Falls Reservoir has a maximum depth of 40 feet and an average depth of 7.2 feet. The lake covers 666 acres.
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Where this data comes from
Measurements for Rainbow Falls Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.