Trend-compensated Overview of USGS Real-time Water-level Monitoring, Stations in Lee County

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

L -4820, USGS ID: 264053081572501 [NWIS]

Site information from 2007 Data Report:

USGS STATION NUMBER.-- USGS 264053081572501

LOCATION.-- Lat 26°40'57", long 81°57'25" referenced to North American Datum of 1927, in NW 1/4 NW 1/4 sec.6, T.44 S., R.24 E., Lee County, FL, Hydrologic Unit 03100103, at the southeast corner of Andalusia Boulevard and East Diplomat Parkway, and 4.5 mi northwest of North Ft. Myers Post Office.

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

WELL CHARACTERISTICS.-- Depth 190 ft. Upper casing diameter 4 in.; top of first opening 128 ft, bottom of last opening 190 ft. Artesian well, open hole 128 to 190 ft.

DATUM.-- Top of recorder shelf, 16.67 ft above National Geodetic Vertical Datum of 1929, April 27, 1981, to present

PERIOD OF RECORD.-- April 1981 to September 1981 (monthly), October 1983 to September 1996 (monthly), April 2000 to current year.

REMARKS.-- Well also used for salinity monitoring. Continuous conductivity records for water years 2000 to 2002 and chloride sample results for previous years are available in the files of the U.S. Geological Survey. Records of water levels prior to October 1983 are available in files of the U.S. Geological Survey. Conductivity monitoring discontinued September 30, 2002.

EXTREMES FOR PERIOD OF RECORD.-- Highest water level measured, 8.15 ft NGVD, Sept. 28, 1984; lowest daily maximum water level, 76.37 ft below NGVD, Apr. 8, 2007.

Online map showing USGS_264053081572501 (through Google Maps - not a USGS site) at (26.6828480,-81.9567566).

Daily values tables - HTML tables

Daily values tables - raw retrieval

Most recent monitoring data received at  L  -4820: 
    (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)                     -48.81             26-NOV-2009 11:00:00
Measured specific conductance                        949.4              28-OCT-2009 14:11:00
Measured water level elevation                       -44.39             28-OCT-2009 14:11:00

Online data inventory for L  -4820:

Data type                                            Start         End          Number of records
Computed elevation, in ft (NGVD)                     31-MAY-2000    25-NOV-2009        79929
Computed specific conductance, in us/cm @ 25c        05-JUN-2000    26-FEB-2003        23513
Daily maximum of elevation, in ft (NGVD)             31-MAY-2000    24-NOV-2009         3319
Measured dissolved chloride content                  02-NOV-1983    28-OCT-2009          100
Measured specific conductance                        02-NOV-1983    28-OCT-2009          373
Measured water-level elevation                       30-APR-1981    28-OCT-2009          247

Water-level data collected in the past 30 years at L -4820 (Save as text file)

Chloride measurements collected in the past 30 years at L -4820 (Save as text file)

Navigational links:

Website

Station data page

Current 30-day hydrograph at L -4820 (264053081572501)

Graph: 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 this graph is available via the [data used] link on the page.

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 -4820 (264053081572501)

Description of information presented in the current 30-day hydrograph at L -4820 (264053081572501)

Long-term trend information

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)

Current 90-day hydrograph at L -4820 (264053081572501)

Graph: 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 this graph is available via the [data used] link on the page.

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 -4820 (264053081572501)

Description of information presented in the current 90-day hydrograph at L -4820 (264053081572501)

Long-term trend information

Current year-to-date hydrograph at L -4820 (264053081572501)

Graph: 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 this graph is available via the [data used] link on the page.

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 -4820 (264053081572501)

Description of information presented in the current year-to-date hydrograph at L -4820 (264053081572501)

Long-term trend information

One-year hydrograph at L -4820 (264053081572501)

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 -4820 (264053081572501)

Description of information presented in the one-year hydrograph at L -4820 (264053081572501)

Long-term trend information

Period of record hydrograph - past 35 years at L -4820 (USGS 264053081572501)

Water-level elevations from the past 35 years.

Data used to produce the period of record hydrograph - past 35 years at L -4820 (USGS 264053081572501)

Description of information presented in the period of record hydrograph - past 35 years at L -4820 (USGS 264053081572501)

Long-term trend information

Period of record chloride measurements - past 25 years L -4820 (264053081572501)

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 -4820 (264053081572501)

Description of information presented in the period of record chloride measurements - past 25 years L -4820 (264053081572501)