Searsburg Reservoir
Bennington County, Vermont30 acresView mapDirections
Not enough samples to grade — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). No letter yet. Here is what we do have.
- Impaired · Mercury
- Limited data
Searsburg Reservoir in Bennington County, Vermont is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 30 acres.
- Area
- 30 acres
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Watch Searsburg Reservoir’s letter
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Why Searsburg Reservoir has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Searsburg Reservoir, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by VT DEC and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Searsburg Reservoir is a 30-acre lake in Bennington County, Vermont.
Source: EPA Water Quality Portal sampling records, VT DEC, last sampled 2024-04-17. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Searsburg Reservoir is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Water quality measurements for Searsburg Reservoir
These readings exist but are not enough for an A–F grade — see why.
No clarity data.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples |
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 30 acres |
No bathymetric survey has been published for Searsburg Reservoir, so its depth is not documented here.
Fishing Searsburg Reservoir
Reservoir Info (USACE NID)
Searsburg Reservoir is a man-made reservoir impounded by the Searsburg (completed 1922), built primarily for hydroelectric on the Deerfield River; other-type dam, 50 ft tall and 612 ft long.
- Surface area
- 30 ac
- Normal storage
- 412 ac-ft
- Max storage
- 412 ac-ft
- Drainage area
- 90 sq mi
- Hazard class
- Low
- Owner
- Great River Hydro, LLC
Source: USACE National Inventory of Dams, NID ID VT00026 · Operator website
EPA Impairment Status
Searsburg Reservoir is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit VT12-04L05 · Official waterbody report
Graded lakes near Searsburg Reservoir
Searsburg Reservoir has no grade, but these lakes within a short drive do.
Nearby Lakes in Bennington County
Frequently asked questions about Searsburg Reservoir
Where is Searsburg Reservoir?
- Searsburg Reservoir is a lake in Bennington County, Vermont. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for Searsburg Reservoir?
- Searsburg Reservoir in Bennington County, Vermont is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 30 acres.
Is Searsburg Reservoir safe to swim in?
- The letter is not a swimming clearance. Searsburg Reservoir is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Explore Searsburg Reservoir across LakeQuality
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Where this data comes from
8 measurements from 1 monitoring station, 2023–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Vermont Dept of Environmental Conservation
1VTDECWQ8 samples · 2023–2024
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 (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
Impairment status from EPA ATTAINS 303(d) database