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LakeQuality

Dodge Pond-Inlet

Grafton County, New HampshireView mapDirections

NHDES publishes the water-quality measurements for Dodge Pond-Inlet. Here is what has been measured.

Phosphorus
12.1 µg/L
Typical for New Hampshire
Measured by NHDES
Type
Mesotrophic
Trophic class
  • Mesotrophic
  • Impaired · Algal growth

Dodge Pond-Inlet in Grafton County, New Hampshire has water-quality measurements published by NHDES, shown here as reported. Phosphorus: 12.1 µg/L.

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Dodge Pond-Inlet is a mesotrophic lake in Grafton County, New Hampshire. Compared to the 26 other monitored lakes in Grafton County, Dodge Pond-Inlet ranks #12 for water quality.

Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2025-07-06. Methodology: how these readings are compared.

Swimming conditions

Readings only

Low algae

Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.

Nutrient and algae readings are not a swimming clearance. Dodge Pond-Inlet is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, mercury, nutrients (phosphorus, nitrogen). Check local advisories before you swim.

Whether Dodge Pond-Inlet 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 Dodge Pond-Inlet

These are the measurements NHDES publishes for Dodge Pond-Inlet, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.

No clarity data. Phosphorus 12.1 µg/L. TSI 40.

Water quality readings
MeasureReadingWhere it sits
Water clarity (Secchi depth)No reading

How deep a black-and-white disk stays visible from the surface. Higher is clearer.

Total phosphorus12.1µg/LGood
GoodFairPoor
Chlorophyll-a (algae)No reading

The green pigment in algae — a direct measure of how much algae is in the water.

Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a.40Mesotrophic
OligotrophicMesotrophicEutrophicHypereutrophic

Moderate nutrients, good water quality

Ask about Dodge Pond-Inlet

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

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Stays near Dodge Pond-Inlet

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Fishing Dodge Pond-Inlet

EPA Impairment Status

Dodge Pond-Inlet is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).

Causes of impairment

Algal growthMercuryNutrients (phosphorus, nitrogen)

Designated uses not supporting: Aquatic life, Fish consumption.

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

Source: EPA ATTAINS assessment unit NHLAK801030502-01 · Official waterbody report

Nearby Lakes in Grafton County

Frequently asked questions about Dodge Pond-Inlet

Where is Dodge Pond-Inlet?

Dodge Pond-Inlet is a lake in Grafton County, New Hampshire. Its water-quality measurements are published by NHDES and shown on this page as reported.

What is the water quality of Dodge Pond-Inlet?

Dodge Pond-Inlet in Grafton County, New Hampshire has water-quality measurements published by NHDES, shown here as reported. Phosphorus: 12.1 µg/L.

Measurements on this page ↑

Is Dodge Pond-Inlet safe to swim in?

Nutrient and algae readings are not a swimming clearance. Dodge Pond-Inlet is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, mercury, nutrients (phosphorus, nitrogen). Check local advisories before you swim.

Swimming on this page ↑

Where this data comes from

9 measurements from 1 monitoring station, 2021–2025. Retrieved from the EPA Water Quality Portal on 2026-08-21.

Collected and reported by

  • New Hampshire Department Of Environmental Services (BEACH)111133009 samples · 2021–2025

Analytical methods

  • 10-115-01-1 F ~ LACHAT; Total Phosphorus- Manual persulfate digest
Monitoring station identifiers (1)

EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.

Other records on this page

Impairment status from EPA ATTAINS 303(d) database