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 254000080181002
LOCATION.-- Lat 25°40'00", long 80°18'10" referenced to North American Datum of 1927, in SE 1/4 SE 1/4 NE 1/4 sec.11, T.55 S., R.40 E., Miami-Dade County, FL, Hydrologic Unit 03090202, at northwest corner of Ludlam Road and Killian Drive, 1.2 mi east of U.S. Highway 1, and 10.5 mi southwest of Miami.
AQUIFER.-- Biscayne limestone aquifer of the Pleistocene Age, Geologic Unit 112 BSCNN.
WELL CHARACTERISTICS.-- Depth 22 ft. Upper casing diameter 6 in.; top of first opening 8 ft, bottom of last opening 22 ft.
DATUM.-- Top of base, 11.68 ft above National Geodetic Vertical Datum of 1929, July 12, 2006, to present
PERIOD OF RECORD.-- September 1960 to current year.
REMARKS.-- G-580A (254000080181002) replaced the 100 ft deep, 6 in. diameter well G-580 (254000080181001) in September 1960, after G-580 was destroyed on June 12, 1960.
EXTREMES FOR PERIOD OF RECORD.-- Highest daily maximum water level, 9.34 ft, Sept. 23, 1960; lowest, 0.58 ft NGVD, May 10, 1971.
Online map showing USGS_254000080181002 (through Google Maps - not a USGS site) at (25.6670475,-80.3025513).
Daily values tables - HTML tables
Daily values tables - raw retrieval
Most recent monitoring data received at G - 580A:
(Recorded within last 60 days of site monitoring or during site visit within past 180 days.)
Data type Value Date Time
Computed elevation DCP, in ft (NGVD) 2.55 23-NOV-2009 15:00:00
Online data inventory for G - 580A: Data type Start End Number of records Computed elevation DCP, in ft (NGVD) 01-OCT-1996 23-NOV-2009 110673 Daily maximum elevation DCP, in ft (NGVD) 25-JAN-1973 22-NOV-2009 13066 Instantaneous water-level elevation 24-OCT-2002 03-JUN-2003 4
D
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 G - 580A (254000080181002)
Description of information presented in the current 30-day hydrograph at G - 580A (254000080181002)
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 G - 580A (254000080181002)
Description of information presented in the current 90-day hydrograph at G - 580A (254000080181002)
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 G - 580A (254000080181002)
Description of information presented in the current year-to-date hydrograph at G - 580A (254000080181002)
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 G - 580A (254000080181002)
Description of information presented in the one-year hydrograph at G - 580A (254000080181002)
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
Water-level elevations from the past 35 years.
Data used to produce the period of record hydrograph - past 35 years at G - 580A (USGS 254000080181002)
Description of information presented in the period of record hydrograph - past 35 years at G - 580A (USGS 254000080181002)
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.