York Region County Lake Quality
Ontario, 11 lakes, measured by Ontario MECP
York Region County has 11 monitored lakes — a thin enough sample that one or two stressed lakes can move the county average noticeably. Use the per-lake pages below for what actually matters. The 11 monitored lakes in York Region County carry whatever clarity, phosphorus, and chlorophyll-a readings Ontario MECP has published, shown as reported.
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 York Region County
Planning a trip? Check special fishing regulations for Clarke Lake — or check the official Ontario fishing regulations.
All Lakes in York Region County
11 lakes · 0 ranked on readings, 11 without enough sampling0 lakes ranked on readings · 11 without enough sampling, hidden
| # | Lake | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|
| Clarke LakeYork Region | 4.3 ft | No recent samples | No recent samples | No recent samples | Not recorded | |
| Eaton LakeYork Region | 10.5 ft | 18.9 µg/L | No recent samples | No recent samples | Not recorded | |
| Mary LakeYork Region | 10.7 ft | 17 µg/L | No recent samples | No recent samples | Not recorded | |
| Musselmans LakeYork Region | 12 ft | No recent samples | No recent samples | No recent samples | Not recorded | |
| Preston LakeYork Region | 13.1 ft | 15 µg/L | No recent samples | No recent samples | Not recorded | |
| Simoen LakeYork Region | 12.5 ft | No recent samples | No recent samples | No recent samples | Not recorded | |
| St George LakeYork Region | 9.7 ft | 18.7 µg/L | No recent samples | No recent samples | Not recorded | |
| Wilcox LakeYork Region | 8 ft | 18.8 µg/L | No recent samples | No recent samples | Not recorded | |
| Bond LakeYork Region | No recent samples | 23.7 µg/L | No recent samples | No recent samples | Not recorded | |
| Haynes LakeYork Region | No recent samples | 12.9 µg/L | No recent samples | No recent samples | Not recorded | |
| Musselman LakeYork Region | 7.2 ft | 20.6 µg/L | No recent samples | No recent samples | Not recorded |
NR = no nutrient or algae reading on record. The measurements are published as the authority reports them. Where the data comes from.
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Source: the Ontario Ministry of the Environment, Conservation and Parks. See data sources.