Water-level conditions in southern Florida
Water-level conditions in southern Florida
All data presented on this site are considered to be PROVISIONAL DATA and subject to revision pending further review.
USGS STATION NUMBER.-- USGS 261802081354801
LOCATION.-- Lat 26°18'03", long 81°35'47" referenced to North American Datum of 1983, in SE 1/4 NE 1/4 sec.15, T.48 S., R.27 E., Collier County, FL, Hydrologic Unit 03090204, 50 ft south and 200 ft west of the intersection of 37th Avenue NW and County Road 846, 0.65 mi north of the intersection of County Road 858 and County Road 846, 14 mi southwest of the Immokalee Post Office.
AQUIFER.-- Sandstone aquifer of the Miocene Age, Geologic Unit 122 SNDS.
WELL CHARACTERISTICS.-- Depth 242 ft. Upper casing diameter 4 in.; top of first opening 220 ft, bottom of last opening 242 ft. Artesian well, open hole 220 to 242 ft.
DATUM.-- Top of coupling, 18.48 ft above National Geodetic Vertical Datum of 1929, Oct. 8, 1981, to present
PERIOD OF RECORD.-- October 1981 (intermittent), December 1982 to November 1996 (monthly), December 1996 to current year.
REMARKS.-- Well is also used for salinity monitoring. Records of water levels prior to October 1983 are available in files of the U.S. Geological Survey.
EXTREMES FOR PERIOD OF RECORD.-- Highest water level measured, 15.81 ft NGVD, June 29, 1982; lowest, 1.95 ft NGVD, Mar. 29, 1990.
Online map showing USGS_261802081354801 (through Google Maps - not a USGS site)
Daily values tables - HTML tables
Daily values tables - raw retrieval
Most recent monitoring data received at C - 688:
(Recorded within last 60 days of site monitoring or during site visit within past 180 days.)
Data type Value Date Time
Computed elevation, in ft (NGVD) 7.84 19-FEB-2009 11:00:00
Measured specific conductance 725 30-OCT-2008 10:04:00
Online data inventory for C - 688: Data type Start End Number of records Computed elevation, in ft (NGVD) 10-DEC-1996 19-FEB-2009 103148 Daily maximum elevation, in ft (NGVD) 11-DEC-1996 18-FEB-2009 4196 Measured dissolved chloride content 08-OCT-1981 30-OCT-2008 52 Measured specific conductance 08-OCT-1981 30-OCT-2008 52 Measured water-level elevation 08-OCT-1981 28-APR-2004 176
![Graph: Continuously recorded water levels for the past 90 days are compared to the daily (maximum) water levels from last year, and to the minimum and maximum daily levels for the corresponding weeks of the year for the site period of record prior to the current water year.. Data used to produce this graph is available via the [data used] link on the page.](../graphics/graphs/graph_06994.png)
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Continuously recorded water levels for the past 90 days are compared to the daily (maximum) water levels from last year, and to the minimum and maximum daily levels for the corresponding weeks of the year for the site period of record prior to the current water year.
Data used to produce the current 90-day hydrograph at C - 688 (261802081354801)
Postscript version of the current 90-day hydrograph at C - 688 (261802081354801)
Description of information presented in the current 90-day hydrograph at C - 688 (261802081354801)
The change in daily water-level elevations correlates with time to a 95-percent degree of confidence for the past 25 years of record. A linear regression has been performed against the daily maximum water-level elevations for the past 25 years to quantify a long-term trend in the data. The estimated long-term trend in water level is -0.064 ft/year. (Description of statistical methods)
![Graph: Daily maximum water levels for the current calendar year are compared to the water levels from last year, and to the minimum and maximum daily levels for the corresponding weeks of the year for the site period of record prior to the current water year.. Data used to produce this graph is available via the [data used] link on the page.](../graphics/graphs/graph_08054.png)
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Daily maximum water levels for the current calendar year are compared to the water levels from last year, and to the minimum and maximum daily levels for the corresponding weeks of the year for the site period of record prior to the current water year.
Data used to produce the current year-to-date hydrograph at C - 688 (261802081354801)
Postscript version of the current year-to-date hydrograph at C - 688 (261802081354801)
Description of information presented in the current year-to-date hydrograph at C - 688 (261802081354801)
The change in daily water-level elevations correlates with time to a 95-percent degree of confidence for the past 25 years of record. A linear regression has been performed against the daily maximum water-level elevations for the past 25 years to quantify a long-term trend in the data. The estimated long-term trend in water level is -0.064 ft/year. (Description of statistical methods)
![Graph: Long-term water-level elevation trends are estimated by statistical analysis, then water-level elevations for the past year are compared to the duration information, compensated for long-term trends, for the corresponding weeks of the year.. Data used to produce this graph is available via the [data used] link on the page.](../graphics/graphs/graph_00840.png)
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Long-term water-level elevation trends are estimated by statistical analysis, then water-level elevations for the past year are compared to the duration information, compensated for long-term trends, for the corresponding weeks of the year.
Data used to produce the one-year hydrograph at C - 688 (261802081354801)
Postscript version of the one-year hydrograph at C - 688 (261802081354801)
Description of information presented in the one-year hydrograph at C - 688 (261802081354801)
The change in daily water-level elevations correlates with time to a 95-percent degree of confidence for the past 25 years of record. A linear regression has been performed against the daily maximum water-level elevations for the past 25 years to quantify a long-term trend in the data. The estimated long-term trend in water level is -0.064 ft/year. (Description of statistical methods)
![Graph: Water-level elevations from the past 35 years . Data used to produce this graph is available via the [data used] link on the page.](../graphics/graphs/graph_01050.png)
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Water-level elevations from the past 35 years.
Data used to produce the period of record hydrograph - past 35 years at C - 688 (USGS 261802081354801)
Postscript version of the period of record hydrograph - past 35 years at C - 688 (USGS 261802081354801)
Description of information presented in the period of record hydrograph - past 35 years at C - 688 (USGS 261802081354801)
The change in daily water-level elevations correlates with time to a 95-percent degree of confidence for the past 25 years of record. A linear regression has been performed against the daily maximum water-level elevations for the past 25 years to quantify a long-term trend in the data. The estimated long-term trend in water level is -0.064 ft/year. (Description of statistical methods)
![Graph: Sample chloride measurements available over the past 25 years. Vertical groups of chloride measurements represent results from chloride or specific conductance profile measurements.. Data used to produce this graph is available via the [data used] link on the page.](../graphics/graphs/graph_01235.png)
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Sample chloride measurements available over the past 25 years. Vertical groups of chloride measurements represent results from chloride or specific conductance profile measurements.
Data used to produce the period of record chloride measurements - past 25 years C - 688 (261802081354801)
Postscript version of the period of record chloride measurements - past 25 years C - 688 (261802081354801)
Description of information presented in the period of record chloride measurements - past 25 years C - 688 (261802081354801)
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.
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.sflorida.er.usgs.gov/edl-cgi/run.pl?map=122snds&mapuse=F&sites=(261802081354801)
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