SEEPAGE FLOW INTO FLORIDA LAKES

摘要: ABSTRACT: Direct measurements indicate that subsurface seepage in the littoral zone contributed 17.5 and 2.0 percent of total hydraulic inputs, respectively, to Lakes Conway Apopka, Florida. Two variations measuring devices were evaluated gave relative standard deviations 7 24 percent. Measurement inaccuracies minimized by using large diameter (0.9 cm ID) plastic tubing. For a given transect perpendicular shore, flow patterns reproducible over time. Seepage flows ranged from 0 112 1/m2-day most between 4 30 1/m2-day. The detection limit was about 0.2 for one-hour collection period. occured primarily within m shore generally decreased exponentially with distance shore. shape bottom profile influenced patterns; lake bottoms steeper slopes had higher compressed narrower zone. After short-term rain event at Lake Conway, increased rapidly 2.4 times prerain 1 h near background 6 h.