Service Description: The RECHARGE maps and information were published inTechnical Publication 95-02 (WRE 327) August 1995, "Mapping Recharge (Infiltration/Leakage) Throughout the South Florida Water Management District" by Phil Fairbank and Sue Hohner.
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Description: Excess Precipitation - Kissimmee Basin, Upper East Coast, Lower East Coast and Lower West Coast Regions / Floridan Aquifer.Protection of ground-water recharge areas against continued intrusion from urban expansion is becoming a primary concern among local governments within south Florida; a region whose population depends almost exclusively on ground water to meet its potable water demands. The Florida Legislature, by enacting various statutes, requires the water management districts to provide recharge area information to local governments in an effort to assist these agencies with the development and subsequent implementation of appropriate water resource policies.As a result, the South Florida Water Management District undertook a project to map recharge (as a consequence of infiltration and leakage) for all of the primary public water supply aquifer systems within its four planning regions.Recharge maps, at a scale of 1:300,000, were compiled for the unconfined Biscayne aquifer (Lower East Coast Planning Region), the unconfined Surficial aquifer system (Lower East Coast, Upper East Coast, and Lower West Coast Planning Regions), the semi-confined lower Tamiami and Sandstone aquifers (Lower West Coast Planning Region), and the semi-confined to confined upper Floridan aquifer (Kissimmee Basin Planning Region). The maps delineate average yearly rates of precipitation recharge or leakage, depending on the type of aquifer system(s) portrayed, as well as excess precipitation estimates (i.e. rainfall minus actual evapotranspiration losses) for each planning region. Recharge rates were determined from data sets extracted from existing regional numerical ground-water flow models representing a ten-year period (1980 through 1990), and standardized to long-term average or “normal” precipitation trends. A geographic information system (GIS) was employed to integrate the various data necessary in producing the final maps.Because of the large scale nature and the assumptions inherent within the data bases employed for completion of this project, the resulting map products are intended to be used as regional ground-water resource management planning aids only, and are not considered applicable for site-specific assessments.
Copyright Text: SFWMD Geospatial Services
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