San Joaquin County Lake Quality
California, 12 lakes, measured by SWRCB
San Joaquin County has 12 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 12 monitored lakes in San Joaquin County carry whatever clarity, phosphorus, and chlorophyll-a readings SWRCB 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 San Joaquin County
Planning a trip? Check special fishing regulations for Bacon Island North Pond — or check the official California fishing regulations.
All Lakes in San Joaquin County
12 lakes · 0 ranked on readings, 12 without enough sampling0 lakes ranked on readings · 12 without enough sampling, hidden
| # | Lake | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|
| Bacon Island North PondSan Joaquin | No recent samples | No recent samples | 258.2 µg/L | No recent samples | Not recorded | |
| Bacon Island South PondSan Joaquin | No recent samples | No recent samples | 26.4 µg/L | No recent samples | ✓ Public | |
| Bouldin Island East PondSan Joaquin | No recent samples | No recent samples | 19 µg/L | No recent samples | Not recorded | |
| Bouldin Island West PondSan Joaquin | No recent samples | No recent samples | 23.2 µg/L | No recent samples | Not recorded | |
| Lake LincolnSan Joaquin | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Mcleod Lake A Weber Point A StocktonSan Joaquin | No recent samples | No recent samples | No recent samples | No recent samples | ✓ Public | |
| Meadow LakeSan Joaquin | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Oakwood LakeSan Joaquin | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Quail LakeSan Joaquin | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Smith LakeSan Joaquin | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Staten Island LakeSan Joaquin | No recent samples | No recent samples | 5.7 µg/L | No recent samples | Not recorded | |
| Tracy LakeSan Joaquin | No recent samples | No recent samples | 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 California State Water Resources Control Board. See data sources.