USGS WRIR 90-4108 figure 16 provides a geospatial contour map showing the altitude below sea level of the base of the Biscayne aquifer. The map covers Miami-Dade County, Florida, with a contour interval of 10 feet. This dataset was produced by the U.S. Geological Survey in cooperation with the South Florida Water Management District, with a last update recorded in 1985.
Use Cases
- Model 3D aquifer geometry and volume by interpolating the base altitude contour lines.
- Analyze regional groundwater flow patterns by correlating the aquifer base configuration with water level data.
- Assess aquifer confinement and connectivity by examining the spatial variation in the depth to the aquifer base.
Strengths
- Contour data is derived from a U.S. Geological Survey Water-Resources Investigations Report, an authoritative source.
- The map provides a specific 10-foot contour interval for detailed elevation analysis.
Limitations
- The dataset is temporally stale, with a last update in 1985, potentially not reflecting current subsurface conditions.
- Specific row/column counts, sample data, and file formats are unknown, limiting immediate usability assessment.
- The description indicates previous investigations had insufficient information on western/deeper parts of the aquifer, suggesting potential data gaps in those areas.
Provenance
- Source
- U.S. Geological Survey (USGS) Water-Resources Investigations Report 90-4108.
- Collection Method
- Derived from hydrogeologic study and drilling/monitoring activities, though specific methods for this contour map are not detailed.
- Time Range
- Study period culminating in 1985.
- Freshness
- 1985-12-31
- Geography
- Miami-Dade County, Florida, USA, with focus on the coastal area.