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 262258081471802
LOCATION.-- Lat 26°22'58.4", long 81°47'17.4" referenced to North American Datum of 1983, in NE 1/4 NE 1/4 SE 1/4 sec.15, T.47 S., R.25 E., Lee County, FL, Hydrologic Unit 03090204, 25 ft west of Stillwell Parkway and 50 ft north of Strike Lane, 1.3 mi east of old U.S. Highway 41, (County Road 887), 3.5 mi north of Bonita Springs.
AQUIFER.-- Lower Tamiami aquifer of the Pliocene Age, Geologic Unit 121 TMIM.
WELL CHARACTERISTICS.-- Depth 105 ft. Upper casing diameter 4 in.; top of first opening 59 ft, bottom of last opening 105 ft. Artesian well, open hole 59 to 105 ft.
DATUM.-- Top of casing, 15.66 ft above National Geodetic Vertical Datum of 1929, July 1, 1987, to present
PERIOD OF RECORD.-- July 1987 to September 1994 (monthly), October 1994 to September 1995 (quarterly), October 1995 to March 1997 (monthly), April 1997 to current year.
REMARKS.-- Well is also used for salinity monitoring. Samples are collected from a depth of 67 ft because a portion of the open hole of this well has collapsed or become obstructed below this depth.
EXTREMES FOR PERIOD OF RECORD.-- Highest water level measured, 12.73 ft NGVD, Oct. 25, 1995; lowest, 6.87 ft below NGVD, Apr. 25, 1996.
Online map showing USGS_262258081471802 (through Google Maps - not a USGS site) at (26.3828888,-81.7881699).
Daily values tables - HTML tables
Daily values tables - raw retrieval
Most recent monitoring data received at L -5747:
(Recorded within last 60 days of site monitoring or during site visit within past 180 days.)
Data type Value Date Time
Computed elevation DCP, in ft (NGVD) 0.93 23-NOV-2009 18:00:00
Measured water level elevation 2.25 22-OCT-2009 12:56:00
Online data inventory for L -5747: Data type Start End Number of records Computed elevation DCP, in ft (NGVD) 31-MAR-1997 23-NOV-2009 106410 Daily maximum elevation DCP, in ft (NGVD) 01-APR-1997 22-NOV-2009 4342 Measured dissolved chloride content 01-JUL-1987 22-OCT-2009 154 Measured specific conductance 01-JUL-1987 22-OCT-2009 352 Measured water-level elevation 01-JUL-1987 22-OCT-2009 172
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Continuously recorded water levels for the past 30 days are compared to daily (maximum) water levels from last year, the minimum and maximum daily levels for the corresponding weeks of the year for the site period of record, and daily levels for the 2001 drought year.
Data used to produce the current 30-day hydrograph at L -5747 (262258081471802)
Description of information presented in the current 30-day hydrograph at L -5747 (262258081471802)
The change in daily water-level elevations correlates with time to a 95-percent degree of confidence for the past 35 years of record. A linear regression has been performed against the daily maximum water-level elevations for the past 35 years to quantify a long-term trend in the data. The estimated long-term trend in water level is 0.073 ft/year. (Description of statistical methods)
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Continuously recorded water levels for the past 90 days are compared to daily (maximum) water levels from last year, the minimum and maximum daily levels for the corresponding weeks of the year for the site period of record, and daily levels for the 2001 drought year.
Data used to produce the current 90-day hydrograph at L -5747 (262258081471802)
Description of information presented in the current 90-day hydrograph at L -5747 (262258081471802)
The change in daily water-level elevations correlates with time to a 95-percent degree of confidence for the past 35 years of record. A linear regression has been performed against the daily maximum water-level elevations for the past 35 years to quantify a long-term trend in the data. The estimated long-term trend in water level is 0.073 ft/year. (Description of statistical methods)
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Daily maximum water levels for the year are compared to water levels from last year, the minimum and maximum daily levels for the corresponding weeks of the year for the site period of record, and daily levels for the 2001 drought year.
Data used to produce the current year-to-date hydrograph at L -5747 (262258081471802)
Description of information presented in the current year-to-date hydrograph at L -5747 (262258081471802)
The change in daily water-level elevations correlates with time to a 95-percent degree of confidence for the past 35 years of record. A linear regression has been performed against the daily maximum water-level elevations for the past 35 years to quantify a long-term trend in the data. The estimated long-term trend in water level is 0.073 ft/year. (Description of statistical methods)
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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 L -5747 (262258081471802)
Description of information presented in the one-year hydrograph at L -5747 (262258081471802)
The change in daily water-level elevations correlates with time to a 95-percent degree of confidence for the past 35 years of record. A linear regression has been performed against the daily maximum water-level elevations for the past 35 years to quantify a long-term trend in the data. The estimated long-term trend in water level is 0.073 ft/year. (Description of statistical methods)
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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 L -5747 (USGS 262258081471802)
Description of information presented in the period of record hydrograph - past 35 years at L -5747 (USGS 262258081471802)
The change in daily water-level elevations correlates with time to a 95-percent degree of confidence for the past 35 years of record. A linear regression has been performed against the daily maximum water-level elevations for the past 35 years to quantify a long-term trend in the data. The estimated long-term trend in water level is 0.073 ft/year. (Description of statistical methods)
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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 L -5747 (262258081471802)
Description of information presented in the period of record chloride measurements - past 25 years L -5747 (262258081471802)
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.