Lillooet County Lake Quality
British Columbia, 1 lake, measured by ENV with no A–F grades
Lillooet County holds 1 monitored lake. With a sample that small the county-level summary describes those specific waters, not necessarily every water body in the county. No lake in Lillooet County carries an A–F letter, and none can: the scale is scored against EPA reference conditions, which stop at the US border. The 1 monitored lake below carries whatever clarity, phosphorus, and chlorophyll-a readings ENV has published.
Most of the county's monitored lakes are shallow, under 50 feet, which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed.
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Quick Answers for Lillooet County
Planning a trip? Check special fishing regulations for Alta Lake — or check the official British Columbia fishing regulations.
All Lakes in Lillooet County
1 lake · 0 graded, 1 not rated0 graded lakes · 1 not rated, hidden
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|---|
| NRAlta LakeLillooet | NR | 21 ft | 3.7 µg/L | 1.1 µg/L | No recent samples | Not recorded |
NR = no A–F letter. The scale is scored against EPA reference conditions for a lake’s ecoregion, and those stop at the US border, so no amount of sampling produces a letter here. The measurements are published as the authority reports them, not a failing grade. How grading works.
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Source: the British Columbia Ministry of Environment and Parks. See data sources.