Evaluation of Methods to Determine Ground-water Seepage Beneath Levee 30, Miami-Dade County Florida

Ground-water flow models were developed to calculate a water budget, including seepage losses, for a transect perpendicular to Levee 30. Data required for input to and calibration of the models were obtained from: (1) previous studies conducted in the area, (2) analysis of a geologic core and geophysical logs from a new monitor well drilled along the transect, (3) ground-water-level data from monitor wells along the transect, (4) surface-water-stage data in Water Conservation Area 3B and in the Levee 30 canal, (5) discharge measurement made at several locations under varying conditions in the Levee 30 canal, and (6) vertical seepage fluxes between surfacewater and groundwater in Water Conservation Area 3B obtained from seepage meters.