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

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

C - 492, USGS ID: 262228081361901 [NWIS]

Site information from 2007 Data Report:

USGS STATION NUMBER.-- USGS 262228081361901

LOCATION.-- Lat 26°22'28", long 81°36'19" referenced to North American Datum of 1927, in SE 1/4 NW 1/4 sec.22, T.47 S., R.27 E., Collier County, FL, Hydrologic Unit 03090204, Corkscrew Swamp Sanctuary, north of service road, 0.01 mi west of parking lot, 1 mi west and 0.55 mi north of County Road 846 on County Road 849 and 12 mi north of Immokalee.

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

WELL CHARACTERISTICS.-- Depth 64 ft. Upper casing diameter 6 in.; top of first opening 60 ft, bottom of last opening 64 ft. Artesian well, open hole 60 to 64 ft. See REMARKS.

DATUM.-- Top of shelf, 21.46 ft above National Geodetic Vertical Datum of 1929, Oct. 1973 to present

PERIOD OF RECORD.-- October 1973 to September 1984 (daily), October 1984 to October 1986 (intermittent), November 1986 to current year.

REMARKS.-- Well was used for salinity monitoring until September 2004. Borehole camera inspection indicates that this well is open to the aquifer at a depth of 19 ft and is currently 21 ft deep. It is unknown whether or not the cased depth and well depth that were initially reported for this well were incorrect. It is possible that the casing has separated and the well has filled in with rock from the formation. See WELL CHARACTERISTICS.

EXTREMES FOR PERIOD OF RECORD.-- Highest daily maximum water level, 18.88 ft NGVD, Oct. 19, 1995; lowest, 12.11 ft NGVD, May 31, 2007.

Online map showing USGS_262228081361901 (through Google Maps - not a USGS site) at (26.3748035,-81.6050797).

Daily values tables - HTML tables

Daily values tables - raw retrieval

Most recent monitoring data received at  C  - 492: 
    (Recorded within last 60 days of site monitoring  or during site visit within past 180 days.)

Data type                                            Value      Date       Time 
Computed elevation ADR/DCP, in ft (NGVD)             15.89              26-NOV-2009 11:00:00
Measured water level elevation                       16.08              27-OCT-2009 11:41:00

Online data inventory for C  - 492:

Data type                                            Start         End          Number of records
Computed elevation ADR/DCP, in ft (NGVD)             01-OCT-1996    25-NOV-2009       110470
Daily maximum elevation ADR/DCP, in ft (NGVD)        01-OCT-1973    24-NOV-2009        12017
Measured dissolved chloride content                  21-OCT-1975    20-APR-2004           56
Measured specific conductance                        21-OCT-1975    20-APR-2004           57
Measured water-level elevation                       21-OCT-1975    27-OCT-2009          128

Water-level data collected in the past 30 years at C - 492 (Save as text file)

Chloride measurements collected in the past 30 years at C - 492 (Save as text file)

Navigational links:

Website

Station data page

Current 30-day hydrograph at C - 492 (262228081361901)

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 - 492 (262228081361901)

Description of information presented in the current 30-day hydrograph at C - 492 (262228081361901)

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 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 -0.023 ft/year. (Description of statistical methods)

Current 90-day hydrograph at C - 492 (262228081361901)

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 - 492 (262228081361901)

Description of information presented in the current 90-day hydrograph at C - 492 (262228081361901)

Long-term trend information

Current year-to-date hydrograph at C - 492 (262228081361901)

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 - 492 (262228081361901)

Description of information presented in the current year-to-date hydrograph at C - 492 (262228081361901)

Long-term trend information

One-year hydrograph at C - 492 (262228081361901)

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 - 492 (262228081361901)

Description of information presented in the one-year hydrograph at C - 492 (262228081361901)

Long-term trend information

Period of record hydrograph - past 35 years at C - 492 (USGS 262228081361901)

Water-level elevations from the past 35 years.

Data used to produce the period of record hydrograph - past 35 years at C - 492 (USGS 262228081361901)

Description of information presented in the period of record hydrograph - past 35 years at C - 492 (USGS 262228081361901)

Long-term trend information

Period of record chloride measurements - past 25 years C - 492 (262228081361901)

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 C - 492 (262228081361901)

Description of information presented in the period of record chloride measurements - past 25 years C - 492 (262228081361901)