Little Greenough Pond
Coos County, New Hampshire42 acresView mapDirections
No nutrient or algae sampling on record from NHDES for this lake.
- Impaired · Mercury
- 10 ft max depth
Little Greenough Pond in Coos County, New Hampshire has water-quality measurements published by NHDES, shown here as reported. Maximum depth: 10 ft. Surface area: 42 acres.
Little Greenough Pond is a 42-acre lake in Coos County, New Hampshire with a maximum depth of 10 feet (7-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. Little Greenough Pond is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, pH / acidity. Check local advisories before you swim.
Whether Little Greenough Pond 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 Little Greenough Pond
These are the measurements NHDES publishes for Little Greenough Pond, 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 Little Greenough Pond
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
10 ft
Average depth
6.6 ft
Surface area
42 acres
Shoreline
1.1 mi
The depth above comes from a bathymetric survey of this lake, not from a regional estimate.
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Fishing Little Greenough Pond
EPA Impairment Status
Little Greenough Pond is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
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 NHLAK400010502-04 · Official waterbody report
Nearby Lakes in Coos County
Frequently asked questions about Little Greenough Pond
Where is Little Greenough Pond?
- Little Greenough Pond is a lake in Coos County, New Hampshire. Its water-quality measurements are published by NHDES and shown on this page as reported.
What is the water quality of Little Greenough Pond?
- Little Greenough Pond in Coos County, New Hampshire has water-quality measurements published by NHDES, shown here as reported. Maximum depth: 10 ft. Surface area: 42 acres.
Is Little Greenough Pond safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Little Greenough Pond is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, pH / acidity. Check local advisories before you swim.
How deep is Little Greenough Pond?
- Little Greenough Pond has a maximum depth of 10 feet and an average depth of 6.6 feet. The lake covers 42 acres.
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Where this data comes from
Measurements for Little Greenough Pond 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