The Taylor Creek - Nubbin Slough (TCNS) Basin is directly north of Lake Okeechobee. The watershed covers 120,000 acres of a typically flat landscape with generally poorly drained, coarse textured soils (Spodosols) that have a low phosphorus retention capacity. Water flow from the basin tributaries enters Lake Okeechobee through a flow control structure (S-191).
Lake Okeechobee provides drinking and irrigation water, supports commercial and sport fishing, and is a habitat for many migratory as well as endemic bird species. High phosphorus (P) concentrations in Lake Okeechobee promote eutrophic conditions that impair all water uses.
http://www.water.ncsu.edu/watershedss/info/rcwp/fl1prof.html