Robb Reservoir
Cheshire County, New Hampshire96 acresView mapDirections
No nutrient or algae sampling on record from NHDES for this lake.
- Impaired · Mercury
- 10 ft max depth
Robb Reservoir in Cheshire County, New Hampshire has water-quality measurements published by NHDES, shown here as reported. Maximum depth: 10 ft. Surface area: 96 acres.
Robb Reservoir is a 96-acre lake in Cheshire County, New Hampshire with a maximum depth of 10 feet (3-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. Robb Reservoir is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Whether Robb 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 Robb Reservoir
These are the measurements NHDES publishes for Robb 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 Robb Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
10 ft
Average depth
3 ft
Surface area
96 acres
Shoreline
3.5 mi
The depth above comes from a bathymetric survey of this lake, not from a regional estimate.
Stays via Stay22
Stays near Robb Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Robb Reservoir in Cheshire County, New Hampshire — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Robb Reservoir
Prices for Oct 16–18, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Follow Robb Reservoir’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Robb Reservoir
EPA Impairment Status
Robb 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: Fish consumption.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit NHIMP700030202-02 · Official waterbody report
Nearby Lakes in Cheshire County
Frequently asked questions about Robb Reservoir
Where is Robb Reservoir?
- Robb Reservoir is a lake in Cheshire County, New Hampshire. Its water-quality measurements are published by NHDES and shown on this page as reported.
What is the water quality of Robb Reservoir?
- Robb Reservoir in Cheshire County, New Hampshire has water-quality measurements published by NHDES, shown here as reported. Maximum depth: 10 ft. Surface area: 96 acres.
Is Robb Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Robb Reservoir is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
How deep is Robb Reservoir?
- Robb Reservoir has a maximum depth of 10 feet and an average depth of 3 feet. The lake covers 96 acres.
Explore Robb Reservoir across LakeQuality
More lakes in New Hampshire
Other Lakes in New Hampshire
Where this data comes from
Measurements for Robb 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