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Ground-water conditions in southern Florida

WRIR 01-4275

Design of a Real-Time Ground-Water Level Monitoring Network and Portrayal of Hydrologic Data in Southern Florida

By Scott T. Prinos, A.C. Lietz, and R.B. Irvin

This report has been reformatted for presentation on the World Wide Web. The official text of WRIR 01-4275 (6.3 MB download) is available in PDF format. The Adobe PDF Reader program is available, at no cost, from Adobe.


Table of Contents

Abstract

Introduction

Purpose and Scope

Description of Study Area

Hydrogeologic Setting

Previous Studies

Acknowledgments

Water Use and Precipitation

Population and Water Use

Precipitation

Effects of Water Use

Loss of Pumpage

Aquifer Compaction

Saltwater Contamination

Real-Time Ground-Water Level Monitoring Network Design

Criteria for Selecting Network Wells

Well Construction and Period of Record

Analysis of Long-Term Water-Level Trends in Network Wells

Summary Statistics of Water-Level Data from Candidate Monitoring Wells

Determining Water-level and Rainfall Correlation

Preprocessing of Data

Application of Analytical Technique

Regression Analysis of Network Wells

Analysis of Water-Level and Chloride Data

Chloride Concentration Trends

Relation Between Chloride Concentrations and Water Levels

Selection of Index Wells by Aquifer

Water-Table Aquifer

Water-Level and Chloride Concentration Trend and Correlation Results

Discussion of Well Coverage

Lower Tamiami Aquifer

Water-Level and Chloride Concentration Trend and Correlation Results

Discussion of Well Coverage

Sandstone Aquifer

Water-Level and Chloride Concentration Trend and Correlation Results

Discussion of Well Coverage

Mid-Hawthorn Aquifer

Water-Level and Chloride Concentration Trend and Correlation Results

Discussion of Well Coverage

Surficial Aquifer System

Water-Level and Chloride Concentration Trend and Correlation Results

Discussion of Well Coverage

Biscayne Aquifer

Water-Level and Chloride Concentration Trend Results

Water-Level and Chloride Concentration Correlation Analysis

Discussion of Well Coverage

Portrayal of Real-Time Ground-Water Level Data

Basic Depiction of Data

Regression and Frequency Data

Summary and Conclusions

Selected References

Appendix I: Well Construction and Period of Record

Appendix II: Results of Seasonal Kendall Trend Tests of Continuous Water-Level Data

Appendix III: Summary Statistics of Water-Level Data from Candidate Monitoring Wells

FIGURES

Figure 1. Map showing location of study area 48K
Figure 2. Column showing comparison of hydrogeologic nomenclature for southern Florida 50K
Figure 3. Graphs showing population and ground-water use in the southeastern (Miami-Dade and Broward Counties), southwestern (Collier, Lee, and Hendry Counties), and northeastern (Palm Beach, Martin, and St. Lucie Counties) parts of the study area 91K
Figure 4. Map showing locations of continuous ground-water level monitoring wells that were considered for the real-time ground-water level monitoring network in Collier, Lee, and Hendry Counties 96K
Figure 5. Map showing locations of continuous ground-water level monitoring wells that were considered for the real-time ground-water level monitoring network in Palm Beach, Martin, and St. Lucie Counties 146K
Figure 6. Map showing locations of continuous ground-water level monitoring wells that were considered for the real-time ground-water level monitoring network in Miami-Dade and Broward Counties 132K
Figure 7. Graph showing effect of long-term trends on correlation analyses of water level in well and rainfall at well 54K
Figure 8. Graphs showing comparison of smoothed average rainfall deviations and trend adjusted water-level deviations in well G-3264A 55K
Figure 9. Graphs showing steps used in computation of rainfall model 75K
Figure 10. Map showing locations of salinity monitoring wells 98K
Figure 11. Box plot showing seasonal variation in chloride concentration in well G-1351 17K
Figure 12. Map showing network coverage defined by R2 analysis using index wells in the water table aquifer 81K
Figure 13. Graphs showing comparison of smoothed average rainfall deviations (f-value = 1/26) and trend adjusted water-level deviations in well C-392 58K
Figure 14. Plots showing general and statistically significant trends in water level at selected wells in the lower Tamiami aquifer 105K
Figure 15. Graph showing chloride concentration trends at wells C-489, C-525, C-528, and L-738 71K
Figure 16. Map showing network coverage defined by R2 analysis using index wells in the lower Tamiami aquifer 85K
Figure 17. Plots showing general and statistically significant trends in water level at selected wells in the sandstone aquifer 98K
Figure 18. Graph showing comparison of water levels at well L-2215 and water levels estimated at well L-2215 using water-level data from well L-729 32K
Figure 19. Graph showing comparison of water levels at well L-727 and water levels estimated at well L-727 using water-level data from well L-2186 68K
Figure 20. Graphs showing comparison of smoothed average rainfall deviations (f-value = 1/26) and trend adjusted water-level deviations in well HE-517 59K
Figure 21. Map showing network coverage defined by R2 analysis using index wells in the sandstone aquifer 120K
Figure 22. Plots showing general and statistically significant trends in water level at selected wells in the mid-Hawthorn aquifer 146K
Figure 23. Graphs showing chloride concentration trends at wells L-735, L-2820, L-2702, L-1109 and L-2640 in the mid-Hawthorn aquifer 91K
Figure 24. Map showing network coverage defined by R2 analysis using index wells in the mid-Hawthorn aquifer 81K
Figure 25. Map showing network coverage defined by R2 analysis using index wells in the surficial aquifer system 169K
Figure 26. Graph showing comparison between water-level data from well STL-175 and estimation of water levels using data from well M-1004 30K
Figure 27. Map showing comparison of minimum monthly means of maximum daily water levels and long-term trends in water level and chloride concentration in the Biscayne aquifer 157K
Figure 28. Graphs showing water-level and chloride concentration trends in selected wells in the Hialeah-Miami Springs Area87K
Figure 29. Graph showing chloride concentration in wells G-432 and G-901 27K
Figure 30. Graphs showing chloride concentration in wells G-1241, G-1435, G-2410 and G-2478 near the Hallandale Well Field 70K
Figure 31. Graphs showing chloride concentration in wells G-854, G-2352, G-1343, G-2125, and G-2130 near Fort Lauderdale 102K
Figure 32. Map showing network coverage defined by R2 analysis using index wells in the Biscayne aquifer 162K
Figure 33. Map showing locations of surface-water monitoring sites as depicted on the real-time prototype website 96K
Figure 34. Graph showing long-term chloride concentrations in well L-738, March 24, 1976, July 11, 2000 25K
Figure 35. Graphs showing water-level data for the previous 30 days, 90 days, and current year and comparison with the long-term data of well L-581 in the mid-Hawthorn aquifer, September 27, 2000 149K
Figure 36. Graph showing daily maximum water level in well L-581, September 28, 1975, to September 27, 2000 44K
Figure 37. Graph showing current and historical water levels in well L-581, September 16, 1999, to September 27, 2000 56K
Figure 38. Graph showing water levels in selected wells in Lee County, September 27, 2000 74K

TABLES

Table 1. Rainfall stations used for the southeastern and southwestern rainfall models
Table 2. Rainfall and water-level minimum comparison for aquifers in southern Florida
Table 3. Statistically significant Seasonal Kendall trend test results for chloride concentrations in water at selected wells in southern Florida based on two seasons per year
Table 4. Statistically significant correlation between chloride concentrations and instantaneous water levels for selected wells in southern Florida
Table 5. Potential index wells and well groupings based on regression analysis of aquifers in southern Florida
Table 6. Subnetwork regression characteristics by aquifer
Table 7. Basic well construction and statistical information for potential index wells in southern Florida

Conversion Factors and Datum

MultiplyByTo obtain
inch (in.)2.54centimeter (cm)
foot (ft)0.3048meter (m)
foot squared per day (ft2/d) 0.09290meter squared per day (m2/d)
foot per year (ft/y)0.3048meter per year (m/y)
mile (mi) 1.609kilometer (km)
  • Sea level: In this report, "sea level" refers to the National Geodetic Vertical Datum of 1929--a geodetic datum derived from a general adjustment of the first-order level nets of both the United States and Canada, formerly called Sea Level Datum of 1929.
  • Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83).
  • Water level in this report refers to daily maximum water level. Mean water level refers to mean daily maximum water level.
  • Abstract


    Funding for the USGS to design and maintain this site has been provided through a cooperative agreement with the South Florida Water Management District (SFWMD). Water-level conditions are monitored by the USGS with support from Federal, State, and local cooperators.


    Page Contact Information:
    WWW Administration: GS-W-FL_Webmasters@usgs.gov
    WWW maintenance and data requests: R.B. Irvin - rbirvin@usgs.gov
    Statistical methods: S.T. Prinos - stprinos@usgs.gov

    Page Last Modified: Tuesday, 14-Sep-2004 08:17:43 EDT
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