Cunningham, Kevin, 2005, Biscayne Bay Coastal Wetlands Geophysical Data.Online Links:
Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.01. Longitudes are given to the nearest 0.01. Latitude and longitude values are specified in Degrees, minutes, and decimal seconds.
The horizontal datum used is North American Datum of 1983.
The ellipsoid used is Geodetic Reference System 80.
The semi-major axis of the ellipsoid used is 6378137.
The flattening of the ellipsoid used is 1/298.257.
This project is a joint effort of the USGS, the South Florida Water Management District (SFWMD), and the U. S. Army Corps of Engineers.
954 377-5913 (voice)
954 377-5901 (FAX)
kcunning@usgs.gov
The goal of the Comprehensive Everglades Restoration Plan Biscayne Bay Coastal Wetlands Project (BBCWP) is to rehydrate wetlands and reduce point-source discharge to Biscayne Bay. The BBCWP will replace lost overland flow and partially compensate for the reduction in ground-water seepage by redistributing, through a spreader system, available surface water entering the area from regional canals. The proposed redistribution of freshwater flow across a broad front is expected to restore or enhance freshwater wetlands, tidal wetlands, and near shore bay habitat. A critical component of the BBCWP is the development of a realistic representation of ground-water flow within the karst Biscayne aquifer. Mapping these ground-water flow units is key to the development of models that simulate ground-water flow from the Everglades and urban areas through the coastal wetlands to Biscayne Bay. Because there is little detailed hydrogeologic data of the Surficial aquifer (to depth) in this area, the Biscayne Bay Coastal Wetlands Project Delivery Team installed two monitor-well sites and collected the necessary detailed hydrogeologic data.The L-31 North Canal Seepage Management Pilot Project is intended to curtail easterly seepage emanating from within Everglades National Park (ENP). The pilot project is examining various seepage management technologies as well as operational changes that could be implemented to reduce the water losses from ENP. This project is in close proximity to Biscayne Bay so an effort has been made to combine ongoing work efforts at the two project areas. The distribution of seepage into the L-31 North Canal and beneath it is not known with any degree of certainty today. A canal draw down experiment was conducted to provide additional field data that will be utilized to refine seepage estimates in the study area as well as determine aquifer parameters in the study area.
Prior to completion of the wells, the USGS completed geophysical logging of the wells. The USGS hydrogeologist was on site while the drilling crew developed monitoring wells 9A and 11A for logging and during geophysical borehole logging of the deepest well at each of the two monitor wells. The site USGS hydrogeologist (1) monitored the drilling contractor for adherence to correct borehole development and preparation for geophysical borehole logging; (2) ran geophysical logs, digital-image logs,video logs, flowmeter measurements; and (3) provided calculated computed vuggy-porosity logs.
Person who carried out this activity:
954 377-5913 (voice)
954 377-5901 (FAX)
kcunning@usgs.gov
The distribution of seepage into the L-31 North Canal and beneath it is not known with any degree of certainty today. A canal draw down experiment was proposed to provide additional field data that will be utilized to refne seepage estimates in the study area as well as determine aquifer parameters in the study area. The canal drawdown experiment was scheduled to be completed in two phases. A dry-season test would be conducted toward the end of May 2004 and a wet-season test was scheduled for late July 2004. Both portions of the test were planned for at least four days duration. During the test multiple sets of hydrologic instrumentation were to be monitored on a continual basis. In addition, during the dry-season test, downhole flow logging would be completed in two open-hole interval wells adjacent to the L31N Canal.
The USGS was to acquire geophysical logs using the fluid conductivity and temperature probes, and heat-pulse and spinner flowmeters at two coreholes specified by the Corps of Engineers. The two coreholes would be logged during the second day of the 48-hour duration of the drawdown test. The drawdown test was scheduled for late May or early June 2004 during dry-season conditions.
Person who carried out this activity:
954 377-5913 (voice)
954 377-5901 (FAX)
kcunning@usgs.gov
Cunningham, Kevin J. Carlson, Janine L.; Wingard, 2004, Characterization of Aquifer Heterogeneity Using Cyclostratigraphy and Geophysical Methods in the Upper Part of the Karstic Biscayne Aquifer, Southeastern Florida: USGS Water Resources Investigations Report 03-4208, U.S. Geological Survey, Tallahassee, FL.Online Links:
Cunningham, Kevin J. Wacker, Michael A.; Robinso, 2004, Hydrogeology and Ground-Water Flow at Levee 31N, Miami-Dade County, Florida, July 2003 to May 2004: Scientific Investigations Map I-2846, U.S. Geolgoical Survey, Reston VA.Online Links:
not available
Data collected for well G-3802 consists of conductivity and resistivity, gamma, flow. Spinner flow meter, and geophysical logs. Data for well G-3801 consists of caliper, conductivity and resistivity, gamma, fluid, flow, spinner flow meter, and geophysical logs.
The USGS collected geophysical logs, digital-image and video logs, and flowmeter measurements at wells 9A and 11A.
Are there legal restrictions on access or use of the data?
- Access_Constraints: none
- Use_Constraints: none
727 803-8747 ext 3028 (voice)
727 803-2030 (FAX)
hhenkel@usgs.gov
Biscayne Bay Coastal Wetlands Geophysical Data
No warrantees are implied or explicit for the data
| Data format: | The data are in tables in .las format which can be opened in any logging computer program. in format Log ASCII Standard (version unknown) |
|---|---|
| Network links: |
<http://sofia.usgs.gov/exchange/bbcw_wells> |
| Data format: | The data are in ASCII text files in format ASCII (version unknown) |
|---|---|
| Network links: |
<http://sofia.usgs.gov/exchange/bbcw_wells> |
| Data format: | graphic showing depth, lithofacies, OBI 40 digital borehole image, porosity logs, flow meter logs, gamma, conductivity and resistivity, full waveform sonic data, and well completion diagrams for each well in format Adobe PDF (version 7.0) |
|---|---|
| Network links: |
<http://sofia.usgs.gov/exchange/bbcw_wells> |
727 803-8747 ext 3028 (voice)
727 803-2030 (FAX)
sofia-metadata@usgs.gov
U.S. Department of the Interior, U.S. Geological Survey
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Henkel - Webmaster
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