St. Lucie County Lake Quality

Only 8 lakes in St. Lucie County carry an active grade. The county-level summary is therefore representative of those specific lakes, not necessarily of every water body in the county. The county-wide average lands at B — solid water quality with most lakes carrying clear summer transparency and low-to-moderate phosphorus.

The county's lakes lean shallow, which makes the grades sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest lake on the books is St Lucie-Margaret Lake (B); the most-stressed is St Lucie-de Witt Lake (C).