Halls Lake
Orange County, Vermont84 acresView mapDirections
Vermont DEC publishes the water-quality measurements for Halls Lake. Here is what has been measured.
- Mesotrophic
- 41 ft max depth
Halls Lake in Orange County, Vermont has water-quality measurements published by Vermont DEC, shown here as reported. Water clarity: 13.9 ft visibility. Phosphorus: 13.1 µg/L. Chlorophyll-a (algae): 4.4 µg/L. Surface area: 84 acres.
Halls Lake is a 84-acre mesotrophic lake in Orange County, Vermont with an estimated average depth of about 41 feet. Overall water quality is improving over recent sampling years. Compared to the 3 other monitored lakes in Orange County, Halls Lake ranks #4 for water quality.
Source: EPA Water Quality Portal sampling records, VT DEC, last sampled 2025-08-31. Methodology: how these readings are compared.
What Halls Lake is good for
From access and monitoring records, not editorial picks.
- Clear water13.9 ft of visibility
Swimming conditions
Readings onlyLow 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. Check local advisories before you swim.
Whether Halls Lake is safe to swim in today is a call for the Vermont Department of Environmental Conservation and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Halls Lake
These are the measurements Vermont DEC publishes for Halls Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Good clarity, visible to about 13.9 ft. Phosphorus 13.1 µg/L. Chlorophyll-a 4.4 µg/L. TSI 42.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 13.9ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 13.1µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 4.4µg/L | Good GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 42 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Halls Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~41 ft est.
Surface area
84 acres
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Vermont has not published bathymetry for Halls Lake.
Lake Size & Watershed
Watershed (drainage) area
1 sq mi
HydroLAKES / HydroSHEDS
Shoreline
1.6 mi
HydroLAKES / HydroSHEDS
Elevation
787 ft
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.
Stays via Stay22
Stays near Halls Lake
Compare lakeside cabins, hotels, and vacation rentals near Halls Lake in Orange County, Vermont — 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 Halls Lake
Prices for Oct 30–Nov 1, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Vermont’s top lakes →
Follow Halls Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Halls Lake
Water Quality Trend: Improving
Based on 5 years of monitoring (2021–2025).
Water clarity
Worsening5 years
Phosphorus
Improving-2.74 µg/L/yr5 years
Chlorophyll-a
Improving-0.95 µg/L/yr5 years
Reservoir Info (USACE NID)
Halls Lake is a man-made reservoir impounded by the Halls Lake, built primarily for recreation on the Halls Brook; earth-type dam, 11 ft tall and 130 ft long.
- Surface area
- 84 ac
- Normal storage
- 0 ac-ft
- Max storage
- 675 ac-ft
- Drainage area
- 0.88 sq mi
- Hazard class
- Low
- Owner
- HERTIS BROKKE
Source: USACE National Inventory of Dams, NID ID VT00379 · Operator website
Nearby Lakes in Orange County
Frequently asked questions about Halls Lake
Where is Halls Lake?
- Halls Lake is a lake in Orange County, Vermont. Its water-quality measurements are published by Vermont DEC and shown on this page as reported.
What is the water quality of Halls Lake?
- Halls Lake in Orange County, Vermont has water-quality measurements published by Vermont DEC, shown here as reported. Water clarity: 13.9 ft visibility. Phosphorus: 13.1 µg/L. Chlorophyll-a (algae): 4.4 µg/L. Surface area: 84 acres.
Is Halls Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Halls Lake?
- No published bathymetric survey covers Halls Lake, 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. The lake covers 84 acres.
Explore Halls Lake across LakeQuality
More lakes in Vermont
Other Lakes in Vermont
Mesotrophic Lakes in Vermont
Where this data comes from
160 measurements from 5 monitoring stations, 2021–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Vermont Dept of Environmental Conservation
1VTDECWQ160 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
- 2130 B ~ Nephelometric Method
Monitoring station identifiers (5)
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
Lake size & watershed from HydroLAKES (HydroSHEDS)