Rochester Reservoir
Strafford County, New Hampshire53 acresView mapDirections
No nutrient or algae sampling on record from NHDES for this lake.
- Impaired · Mercury
- 20 ft max depth
Rochester Reservoir in Strafford County, New Hampshire has water-quality measurements published by NHDES, shown here as reported. Maximum depth: 20 ft. Surface area: 53 acres.
Rochester Reservoir is a 53-acre lake in Strafford County, New Hampshire with a maximum depth of 20 feet (13-foot average).
Source: EPA Water Quality Portal sampling records, your state environmental agency. Methodology: how these readings are compared.
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Rochester Reservoir is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury, pH / acidity. Check local advisories before you swim.
Whether Rochester Reservoir is safe to swim in today is a call for the New Hampshire Department of Environmental Services and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Rochester Reservoir
These are the measurements NHDES publishes for Rochester 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 Rochester Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
20 ft
Average depth
12.8 ft
Surface area
53 acres
Shoreline
2 mi
The depth above comes from a bathymetric survey of this lake, not from a regional estimate.
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Fishing Rochester Reservoir
EPA Impairment Status
Rochester Reservoir is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Aquatic life, Fish consumption.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit NHLAK600030602-03 · Official waterbody report
Nearby Lakes in Strafford County
Frequently asked questions about Rochester Reservoir
Where is Rochester Reservoir?
- Rochester Reservoir is a lake in Strafford County, New Hampshire. Its water-quality measurements are published by NHDES and shown on this page as reported.
What is the water quality of Rochester Reservoir?
- Rochester Reservoir in Strafford County, New Hampshire has water-quality measurements published by NHDES, shown here as reported. Maximum depth: 20 ft. Surface area: 53 acres.
Is Rochester Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Rochester Reservoir is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury, pH / acidity. Check local advisories before you swim.
How deep is Rochester Reservoir?
- Rochester Reservoir has a maximum depth of 20 feet and an average depth of 12.8 feet. The lake covers 53 acres.
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Where this data comes from
Measurements for Rochester Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database