Where is Arlington Mill Reservoir?

Arlington Mill Reservoir is a lake in Rockingham County, New Hampshire. Its water-quality measurements are published by NHDES and shown on this page as reported.

How deep is Arlington Mill Reservoir?

Arlington Mill Reservoir has a maximum depth of 35 feet and an average depth of 9.5 feet. The lake covers 238 acres.

Arlington Mill Reservoir

Rockingham County, New Hampshire238 acresView map Directions

No nutrient or algae sampling on record from NHDES for this lake.

Max depth

35 ft

Bathymetric survey

Area

238 acres

Surface area

Shoreline

8.2 mi

Measured length

Impaired · Biotoxins
35 ft max depth

See the measurements Directions Where to stay

Arlington Mill Reservoir in Rockingham County, New Hampshire has water-quality measurements published by NHDES, shown here as reported. Maximum depth: 35 ft. Surface area: 238 acres.

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Arlington Mill Reservoir is a 238-acre lake in Rockingham County, New Hampshire with a maximum depth of 35 feet (10-foot average).

Source: EPA Water Quality Portal sampling records, your state environmental agency. Methodology: how these readings are compared.

What Arlington Mill Reservoir is good for

From access and monitoring records, not editorial picks.

Deep water35 ft surveyed max depth

Swimming conditions

No reading

Bacteria advisory

Nutrient and algae readings are not a swimming clearance. Arlington Mill Reservoir is listed impaired under Clean Water Act §303(d) (IR 5) for biotoxins, mercury, nuisance exotic species. Check local advisories before you swim.

Whether Arlington Mill 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.

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Water quality measurements for Arlington Mill Reservoir

These are the measurements NHDES publishes for Arlington Mill 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 Arlington Mill Reservoir

Answers come straight from the public measurements and survey records on this page.

Lake Details

Max depth

35 ft

Average depth

9.5 ft

Surface area

238 acres

Shoreline

8.2 mi

The depth above comes from a bathymetric survey of this lake, not from a regional estimate.

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Stays near Arlington Mill Reservoir

Compare lakeside cabins, hotels, and vacation rentals near Arlington Mill Reservoir in Rockingham 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 Arlington Mill Reservoir

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Fishing Arlington Mill Reservoir

→ Arlington Mill Reservoir fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Arlington Mill Reservoir is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).

Causes of impairment

BiotoxinsMercuryNuisance exotic species

Designated uses not supporting: Aquatic life, Fish consumption, Recreation.

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit NHLAK700061101-04 · Official waterbody report

Nearby Lakes in Rockingham County

Millville Lake-Right of WayMesotrophic1.8 miView →Shadow Lake1.4 miView →Millville Lake-Car-Mar CoveMesotrophic1.9 miView →Millville Lake-Deep SpotEutrophic2 miView →Millville Lake-Chucks CoveMesotrophic—View →Captains Pond-Buzzell CoveEutrophic2.2 miView →

Frequently asked questions about Arlington Mill Reservoir

Where is Arlington Mill Reservoir?: Arlington Mill Reservoir is a lake in Rockingham County, New Hampshire. Its water-quality measurements are published by NHDES and shown on this page as reported.
What is the water quality of Arlington Mill Reservoir?: Arlington Mill Reservoir in Rockingham County, New Hampshire has water-quality measurements published by NHDES, shown here as reported. Maximum depth: 35 ft. Surface area: 238 acres.
Is Arlington Mill Reservoir safe to swim in?: Nutrient and algae readings are not a swimming clearance. Arlington Mill Reservoir is listed impaired under Clean Water Act §303(d) (IR 5) for biotoxins, mercury, nuisance exotic species. Check local advisories before you swim.
How deep is Arlington Mill Reservoir?: Arlington Mill Reservoir has a maximum depth of 35 feet and an average depth of 9.5 feet. The lake covers 238 acres.