The unit resembles a large snare drum. A port is positioned in the center for attaching the removable volume colection bag. These kinds of units are designed for insertion into sediment which is the application in all previously published seepage studies. The second design, for installation on hard rock surfaces, consists of a sheet of clear vinyl plastic cemented directly to the rock with hydraulic cement. A port for the volume collection bag is attached to the center.
Net outflow is channeled into the volume collection bag.
Preliminary results indicate that seeping groundwater may replace all of the water in eastern Florida Bay in less than 1 year. This information has not been incorperated any hydraulic modeling attempts. The study has also been featured on PBS television. Our results and ongoing monitoring activities will provide data needed by those who make hydraulic and nutrient models of South Florida. Shinn, E. A., Reich, C. D., Hickey, T. D., Tihansky, A. B. 1997, Geology and tidal pumping in the Florida Keys, AAPG annual meeting Dallas TX, abstracts p 106-107.