Trend-compensated Overview of Water-level Conditions for the End of September 2009 in South Florida and Kissimmee River Basin

All data presented on this site are considered to be PROVISIONAL DATA and subject to revision pending further review.

L -1993, USGS ID: 263251081452801 [NWIS]

Site information from 2007 Data Report:

USGS STATION NUMBER.-- USGS 263251081452801

LOCATION.-- Lat 26°32'52", long 81°45'37" referenced to North American Datum of 1927, in NE 1/4 NE 1/4 SE 1/4 sec.24, T.45 S., R.25 E., Lee County, FL, Hydrologic Unit 03090204, 2 mi east of intersection of U.S. Interstate 75 and Daniels Road, 0.3 mi north of airport access road on dirt road and 9.6 mi southeast of Fort Myers Post Office.

AQUIFER.-- Mid-Hawthorn aquifer of the Miocene Age, Geologic Unit 122 HTRNN.

WELL CHARACTERISTICS.-- Depth 242 ft. Upper casing diameter 4 in.; top of first opening 190 ft, bottom of last opening 242 ft. Artesian well, open hole 190 to 242 ft.

DATUM.-- Top of 4-in. casing, 25.19 ft above National Geodetic Vertical Datum of 1929, Oct. 22, 2004, to present

PERIOD OF RECORD.-- December 1974 to current year.

REMARKS.-- On December 11, 2002, the well was re-leveled and the land-surface datum was found to be 23.95 ft above National Geodetic Vertical Datum of 1929. A -0.69 ft correction has been applied to daily maximum values data prior to October 1, 2001. Corrected records are available in the files of the U.S. Geological Survey. The station was reconstructed on March 9, 1978, March 19, 1983, January 3, 1985, March 15, 2001 and October 22, 2004. See DATUM.

EXTREMES FOR PERIOD OF RECORD.-- Highest daily maximum water level, 26.10 ft NGVD Nov. 13, 1975 (present datum); lowest, 1.87 ft below NGVD, June 12, 2007. See REMARKS.

Online map showing USGS_263251081452801 (through Google Maps - not a USGS site) at (26.5481319,-81.7600861).

Daily values tables - HTML tables

Daily values tables - raw retrieval

Most recent monitoring data received at  L  -1993: 
    (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)                     4.03               26-NOV-2009 11:00:00
Measured water level elevation                       5.1                19-OCT-2009 10:49:00

Online data inventory for L  -1993:

Data type                                            Start         End          Number of records
Computed elevation, in ft (NGVD)                     01-OCT-1996    25-NOV-2009       107516
Daily maximum elevation, in ft (NGVD)                28-FEB-1975    24-NOV-2009        12115
Measured dissolved chloride content                  12-NOV-1974    25-JAN-2000           22

Water-level data collected in the past 30 years at L -1993 (Save as text file)

Chloride measurements collected in the past 30 years at L -1993 (Save as text file)

Navigational links:

Website

Station data page

Current 90-day hydrograph at L -1993 (263251081452801)

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.

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 L -1993 (263251081452801)

Description of information presented in the current 90-day hydrograph at L -1993 (263251081452801)

Long-term trend information

The change in daily water-level elevations correlates with time to a 95-percent degree of confidence for the past 35 years. A second-order regression has been performed against the daily water-level elevations for the past 35 years to quantify a long-term trend in the data. The estimated first-order long-term trend in water level is -0.6887 ft/year. (Description of statistical methods)

Current year-to-date hydrograph at L -1993 (263251081452801)

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.

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 L -1993 (263251081452801)

Description of information presented in the current year-to-date hydrograph at L -1993 (263251081452801)

Long-term trend information

One-year hydrograph at L -1993 (263251081452801)

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.

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 -1993 (263251081452801)

Description of information presented in the one-year hydrograph at L -1993 (263251081452801)

Long-term trend information

Period of record hydrograph - past 35 years at L -1993 (USGS 263251081452801)

Water-level elevations from the past 35 years.

Data used to produce the period of record hydrograph - past 35 years at L -1993 (USGS 263251081452801)

Description of information presented in the period of record hydrograph - past 35 years at L -1993 (USGS 263251081452801)

Long-term trend information

Period of record chloride measurements - past 25 years L -1993 (263251081452801)

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 -1993 (263251081452801)

Description of information presented in the period of record chloride measurements - past 25 years L -1993 (263251081452801)