Lake Elmore
Lamoille County, VermontView mapDirections
Clarity, phosphorus, and algae all sit in the cleanest band for this region.
↑ up from B at the last regrade
- Mesotrophic
- Impaired · Hydrologic alteration
- #3 of 6 in the county
- 41 ft max depth
- Public access
Lake Elmore in Lamoille County, Vermont has a water quality grade of A (Excellent). Water clarity: 9.8 ft visibility. Phosphorus: 15.9 µg/L. Chlorophyll-a (algae): 3 µg/L.
- Clarity
- 9.8 ft
- Max depth
- ~41 ft est.
- Type
- Mesotrophic
- Phosphorus
- 15.9 µg/L
- Chlorophyll-a
- 3 µg/L
- Trend
- ↓ Declining
- Public access
- Yes
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Watch Lake Elmore’s letter
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Lake Elmore is a mesotrophic lake in Lamoille County, Vermont with an estimated average depth of about 41 feet. Water quality is graded A based on 2 sampling years through 2025. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 5 other monitored lakes in Lamoille County, Lake Elmore ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, VT DEC, last sampled 2025-08-20. Grade methodology: LakeQuality methodology.
What Lake Elmore is good for
From access and monitoring records, not editorial picks.
- Clear water9.8 ft of visibility
- Boat launch1 documented ramp
Swimming Safety
Grade onlyLow algae
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 A is nutrients and algae, not a swimming clearance. Lake Elmore is listed impaired under Clean Water Act §303(d) (IR 4C) for hydrologic alteration, nuisance exotic species. Check local advisories before you swim.
Water Quality Grade: A (Excellent)
Moderate clarity, visible to about 9.8 ft. Phosphorus 15.9 µg/L. Chlorophyll-a 3 µg/L. TSI 43. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 9.8 ft | Not graded |
| Phosphorus | 15.9 µg/L | Good |
| Chlorophyll-a (Algae) | 3 µg/L | Good |
| Trophic State Index (TSI) | 43 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~41 ft est. |
| Average Depth | ~18 ft est. |
| Public Access | Yes |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Vermont has not published bathymetry for Lake Elmore.
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Recreation & Access
- Vaughn M. DouglassPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Lake Elmore
Water Quality Trend: ↓ Declining
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.133 m/yr | 6 |
| Phosphorus | ↓ Declining | +0.37 µg/L/yr | 6 |
| Chlorophyll-a | ↑ Improving | -0.22 µg/L/yr | 6 |
EPA Impairment Status
Lake Elmore is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4C).
Causes of impairment
Source: EPA ATTAINS assessment unit VT07-08L02_02 · Official waterbody report
County Ranking
Ranked #3 of 6 lakes in Lamoille County
Nearby Lakes in Lamoille County
Frequently asked questions about Lake Elmore
Where is Lake Elmore?
- Lake Elmore is a lake in Lamoille County, Vermont. LakeQuality grades it A for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Lake Elmore?
- Lake Elmore in Lamoille County, Vermont has a water quality grade of A (Excellent). Water clarity: 9.8 ft visibility. Phosphorus: 15.9 µg/L. Chlorophyll-a (algae): 3 µg/L.
Is Lake Elmore safe to swim in?
- The A is nutrients and algae, not a swimming clearance. Lake Elmore is listed impaired under Clean Water Act §303(d) (IR 4C) for hydrologic alteration, nuisance exotic species. Check local advisories before you swim.
How deep is Lake Elmore?
- No published bathymetric survey covers Lake Elmore, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 41 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Are there boat ramps on Lake Elmore?
- Lake Elmore has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Vaughn M. Douglass. Public access is listed as yes.
Explore Lake Elmore across LakeQuality
2 documented falls within 11.9 mi, nearest Moss Glen Falls
Species activity outlook by water temperature and season
Where to stay at Vermont's top lakes, each with its grade
Moderate nutrients, good water quality
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Other Grade A Lakes in Vermont
Mesotrophic Lakes in Vermont
Where this data comes from
155 measurements from 2 monitoring stations, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Vermont Dept of Environmental Conservation
1VTDECWQ155 samples · 2020–2025
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
- 2130 B ~ Nephelometric Method
Monitoring station identifiers (2)
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
Impairment status from EPA ATTAINS 303(d) database
Lake size & watershed from HydroLAKES (HydroSHEDS)
Named boat-access points from the USGS National Boat Ramps inventory