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 264755081460802
LOCATION.-- Lat 26°47'55", long 81°46'08" referenced to North American Datum of 1983, in NE 1/4 NE 1/4 NW 1/4 sec.25, T.42 S., R.25 E., Charlotte County, FL, Hydrologic Unit 03090205, 10 ft north of Coral Rock Quarry Road, 75 ft south of Cook Brown Road, 0.6 mi west of State Road 31, 2.0 mi north of Lee/Charlotte County line.
AQUIFER.-- Mid-Hawthorn aquifer of the Miocene Age, Geologic Unit 112 HTRNN.
WELL CHARACTERISTICS.-- Depth 192 ft. Upper casing diameter 2 in.; top of first opening 179 ft, bottom of last opening 192 ft. Artesian well, open hole 188 to 192 ft.
DATUM.-- Top of casing, 33.69 ft above National Geodetic Vertical Datum of 1929, May 2001 to present
PERIOD OF RECORD.-- May 2001 to current year.
EXTREMES FOR PERIOD OF RECORD.-- Highest daily maximum water level, 25.64 ft NGVD, Sept. 28, 29, 2003; lowest, 12.22 ft NGVD, May 21, 22, 2001.
Online map showing USGS_264755081460802 (through Google Maps - not a USGS site) at (26.7986107,-81.7688904).
Daily values tables - HTML tables
Daily values tables - raw retrieval
Most recent monitoring data received at CH - 324:
(Recorded within last 60 days of site monitoring or during site visit within past 180 days.)
Data type Value Date Time
Computed water-level elevation 22.24 23-NOV-2009 19:00:00
Online data inventory for CH - 324: Data type Start End Number of records Computed water-level elevation 15-MAY-2001 23-NOV-2009 84795 Daily maximum water-level elevation 16-MAY-2001 22-NOV-2009 3001
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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 CH - 324 (264755081460802)
Description of information presented in the current 30-day hydrograph at CH - 324 (264755081460802)
The change in daily water-level elevations has not been mathematically correlated to time for the period of record based on operational considerations. Instead of a long-term trend line, the data are, therefore, compared to the zero-slope (flat, linear) regression curve for the existing period of record daily water-level elevations. This approximates, but may not equal, the period of record mean. (Description of statistical methods)
D
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 CH - 324 (264755081460802)
Description of information presented in the current 90-day hydrograph at CH - 324 (264755081460802)
The change in daily water-level elevations has not been mathematically correlated to time for the period of record based on operational considerations. Instead of a long-term trend line, the data are, therefore, compared to the zero-slope (flat, linear) regression curve for the existing period of record daily water-level elevations. This approximates, but may not equal, the period of record mean. (Description of statistical methods)
D
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 CH - 324 (264755081460802)
Description of information presented in the current year-to-date hydrograph at CH - 324 (264755081460802)
The change in daily water-level elevations has not been mathematically correlated to time for the period of record based on operational considerations. Instead of a long-term trend line, the data are, therefore, compared to the zero-slope (flat, linear) regression curve for the existing period of record daily water-level elevations. This approximates, but may not equal, the period of record mean. (Description of statistical methods)
D
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 CH - 324 (264755081460802)
Description of information presented in the one-year hydrograph at CH - 324 (264755081460802)
The change in daily water-level elevations has not been mathematically correlated to time for the period of record based on operational considerations. Instead of a long-term trend line, the data are, therefore, compared to the zero-slope (flat, linear) regression curve for the existing period of record daily water-level elevations. This approximates, but may not equal, the period of record mean. (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 CH - 324 (USGS 264755081460802)
Description of information presented in the period of record hydrograph - past 35 years at CH - 324 (USGS 264755081460802)
The change in daily water-level elevations has not been mathematically correlated to time for the period of record based on operational considerations. Instead of a long-term trend line, the data are, therefore, compared to the zero-slope (flat, linear) regression curve for the existing period of record daily water-level elevations. This approximates, but may not equal, the period of record mean. (Description of statistical methods)
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.