In addition to aesthetic value and recreational uses, lakes in central Florida are extremely important as habitats for fish, alligators, turtles, and birds such as hawks, eagles, ducks, and herons. Because Florida lakes are used and enjoyed by many, they need to be appreciated, understood, and managed for the benefit of all. Hydrologic characteristics of central Florida lakes vary widely. The surface areas of lakes can range from several hundred square miles, such as Lake Okeechobee, to less than an acre. Water levels in some lakes may vary by 10 feet or more, whereas in other lakes, the water level may vary by only 1 or 2 feet.
Some lakes have natural surface-water inlets and outlets.
Other lakes are landlocked, receiving water only from rainfall and losing water only from evaporation and seepage into the surrounding soils. This great variety in hydrologic characteristics is one of the reasons why water levels vary among lakes and why lakes respond differently to rainfall.