Trend-compensated Overview of USGS Real-time Water-level Monitoring, Stations 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.

C - 981, USGS ID: 262158081283401 [NWIS]

Site information from 2007 Data Report:

USGS STATION NUMBER.-- USGS 262158081283401

LOCATION.-- Lat 26°22'00", long 81°28'36" referenced to North American Datum of 1927, in SE 1/4 SW 1/4 sec.24, T.47 S., R.28 E., Collier County, FL, Hydrologic Unit 03090204, 30 ft north of County Road 846, 2.8 mi east of Oil Grade Road and 4.5 mi southwest of Immokalee.

AQUIFER.-- Surficial aquifer of the Pleistocene Age, Geologic Unit 112 NRSD.

WELL CHARACTERISTICS.-- Depth 60 ft. Upper casing diameter 6 in.; top of first opening 40 ft, bottom of last opening 60 ft.

DATUM.-- Top of shelf, 24.84 ft above National Geodetic Vertical Datum of 1929, Oct. 24, 1996, to present

PERIOD OF RECORD.-- October 1984 to September 1996 (monthly), October 1996 to current year.

REMARKS.-- The figures of water level as elevation, in feet NGVD, prior to October 2001, are in error. A +6.05 ft correction has been applied to correct water-level data prior to October 2001. A correction of -0.03 ft has been applied to water-level data from October 2001 to September 2002. Corrected records are in files of the U.S. Geological Survey. See DATUM.

EXTREMES FOR PERIOD OF RECORD.-- Highest daily maximum water level, 21.71 ft NGVD, Oct. 24, 25, 2006; lowest, 14.53 ft NGVD, May 22, 2001.

Online map showing USGS_262158081283401 (through Google Maps - not a USGS site) at (26.3670254,-81.4764709).

Daily values tables - HTML tables

Daily values tables - raw retrieval

Most recent monitoring data received at  C  - 981: 
    (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)                     18.95              23-NOV-2009 17:00:00
Measured water level elevation                       19.43              27-OCT-2009 14:07:00

Online data inventory for C  - 981:

Data type                                            Start         End          Number of records
Computed elevation, in ft (NGVD)                     31-DEC-1993    23-NOV-2009       107940
Daily maximum elevation, in ft (NGVD)                24-OCT-1996    22-NOV-2009         4508
Measured dissolved chloride content                  16-OCT-1984    20-APR-1993           18
Measured specific conductance                        16-OCT-1984    20-APR-1993           18
Measured water-level elevation                       16-OCT-1984    27-OCT-2009          151

Water-level data collected in the past 30 years at C - 981 (Save as text file)

Chloride measurements collected in the past 30 years at C - 981 (Save as text file)

Navigational links:

Website

Station data page

Current 30-day hydrograph at C - 981 (262158081283401)

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 C - 981 (262158081283401)

Description of information presented in the current 30-day hydrograph at C - 981 (262158081283401)

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 C - 981 (262158081283401)

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 C - 981 (262158081283401)

Description of information presented in the current 90-day hydrograph at C - 981 (262158081283401)

Long-term trend information

Current year-to-date hydrograph at C - 981 (262158081283401)

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 C - 981 (262158081283401)

Description of information presented in the current year-to-date hydrograph at C - 981 (262158081283401)

Long-term trend information

One-year hydrograph at C - 981 (262158081283401)

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 C - 981 (262158081283401)

Description of information presented in the one-year hydrograph at C - 981 (262158081283401)

Long-term trend information

Period of record hydrograph - past 35 years at C - 981 (USGS 262158081283401)

Water-level elevations from the past 35 years.

Data used to produce the period of record hydrograph - past 35 years at C - 981 (USGS 262158081283401)

Description of information presented in the period of record hydrograph - past 35 years at C - 981 (USGS 262158081283401)

Long-term trend information

Period of record chloride measurements - past 35 years C - 981 (262158081283401)

Sample chloride measurements available over the past 35 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 35 years C - 981 (262158081283401)

Description of information presented in the period of record chloride measurements - past 35 years C - 981 (262158081283401)