Northeast Arm Lake
Franklin County, VermontView mapDirections
Nutrients and algae sit mid-range for this region.
↓ down from B at the last regrade
- Mesotrophic
- #2 of 5 in the county
- Public access
Northeast Arm Lake in Franklin County, Vermont has a water quality grade of C (Fair). Water clarity: 13.5 ft visibility. Phosphorus: 23.7 µg/L. Chlorophyll-a (algae): 4.1 µg/L.
- Clarity
- 13.5 ft
- Type
- Mesotrophic
- Phosphorus
- 23.7 µg/L
- Chlorophyll-a
- 4.1 µg/L
- Trend
- → Stable
- Public access
- Yes
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Watch Northeast Arm Lake’s letter
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Northeast Arm Lake is a mesotrophic lake in Franklin County, Vermont. Water quality is graded C based on 2 sampling years through 2025. Water clarity is declining over recent sampling years. Limited fish-species data available. Public access is available with 2 public boat landings. Compared to the 4 other monitored lakes in Franklin County, Northeast Arm Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, VT DEC, last sampled 2025-08-22. Grade methodology: LakeQuality methodology.
What Northeast Arm Lake is good for
From access and monitoring records, not editorial picks.
- Clear water13.5 ft of visibility
- Boat launch2 documented ramps
Swimming Safety
Grade onlyModerate
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
The C is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: C (Fair)
Good clarity, visible to about 13.5 ft. Phosphorus 23.7 µg/L. Chlorophyll-a 4.1 µg/L. TSI 45. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 13.5 ft | Not graded |
| Phosphorus | 23.7 µg/L | Fair |
| Chlorophyll-a (Algae) | 4.1 µg/L | Good |
| Trophic State Index (TSI) | 45 | Mesotrophic |
Moderate nutrients, good water quality
Recreation & Access
- Stephensen PointPublic
- Tabor PointPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Northeast Arm Lake
Water Quality Trend: → Stable
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.515 m/yr | 4 |
| Phosphorus | ↑ Improving | -1.26 µg/L/yr | 5 |
| Chlorophyll-a | → Stable | +0.08 µg/L/yr | 5 |
County Ranking
Ranked #2 of 5 lakes in Franklin County
Nearby Lakes With Higher Grades
Northeast Arm Lake holds Grade C. One nearby lake has a higher nutrient-and-algae grade — useful for a swim day, not a reason to skip lodging here.
See full comparison →Nearby Lakes in Franklin County
Frequently asked questions about Northeast Arm Lake
Where is Northeast Arm Lake?
- Northeast Arm Lake is a lake in Franklin County, Vermont. LakeQuality grades it C for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Northeast Arm Lake?
- Northeast Arm Lake in Franklin County, Vermont has a water quality grade of C (Fair). Water clarity: 13.5 ft visibility. Phosphorus: 23.7 µg/L. Chlorophyll-a (algae): 4.1 µg/L.
Is Northeast Arm Lake safe to swim in?
- The C is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Are there boat ramps on Northeast Arm Lake?
- Northeast Arm Lake has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Stephensen Point, Tabor Point. Public access is listed as yes.
Explore Northeast Arm Lake across LakeQuality
More Vermont Lake Rankings
Other Grade C Lakes in Vermont
Mesotrophic Lakes in Vermont
Where this data comes from
98 measurements from 1 monitoring station, 2021–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Vermont Dept of Environmental Conservation
1VTDECWQ98 samples · 2021–2025
Analytical methods
- EPA approved Alternate Test Procedure for 4500 P H. Has a 28 day hold without acid preservation.
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory