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.

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PO-1, USGS ID: 281202081391701 [NWIS]


Site information from NWIS:

LOCATION.-- Lat 28° 12' 02", long 81° 39' 17", in SE 1/4 SW 1/4 SW 1/4, sec. 19, T.26 S., R.19 E., in Polk County, near Davenport, FL. Hydrologic Unit 03080102.

AQUIFER.-- Floridan aquifer of the Oligocene Age, Geologic Unit 120FLRD.

WELL CHARACTERISTICS.-- Drilled, observation well, diameter 4 in., depth 151 ft, cased to 108 ft.

INSTRUMENTATION.-- Satellite data collection platform.

DATUM.-- Measuring point: Top of recorder shelf, 135.41 ft above National Geodetic Vertical Datum of 1929.

LAND-SURFACE DATUM.-- Land surface is approximately 133 ft above NGVD.

REMARKS.-- Operated by USGS Office in Orlando, FL. Well has also been referenced by other agencies under station name "PO-1 THORN".

Online map showing USGS_281202081391701 (through Google Maps - not a USGS site) at (28.2008476,-81.6545181).

Daily values tables - HTML tables

Daily values tables - raw retrieval





Most recent monitoring data received at  PO-1: 
    (Recorded within last 60 days of site monitoring  or during site visit within past 180 days.)

Data type                                            Value      Date       Time 
Computed water level elevation                       124.41             26-NOV-2009 11:00:00

Online data inventory for PO-1:

Data type                                            Start         End          Number of records
Computed water-level elevation                       01-OCT-1986    25-NOV-2009        41313
Daily maximum water-level elevation                  06-NOV-1985    24-NOV-2009         7035

Water-level data collected in the past 30 years at PO-1 (Save as text file)


Navigational links:

Website

Station data page


Current 30-day hydrograph at PO-1 (281202081391701)


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.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 PO-1 (281202081391701)

Description of information presented in the current 30-day hydrograph at PO-1 (281202081391701)

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 PO-1 (281202081391701)


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.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 PO-1 (281202081391701)

Description of information presented in the current 90-day hydrograph at PO-1 (281202081391701)

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 year-to-date hydrograph at PO-1 (281202081391701)


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.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 PO-1 (281202081391701)

Description of information presented in the current year-to-date hydrograph at PO-1 (281202081391701)

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)

One-year hydrograph at PO-1 (281202081391701)


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.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 PO-1 (281202081391701)

Description of information presented in the one-year hydrograph at PO-1 (281202081391701)

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)

Period of record hydrograph - past 35 years at PO-1 THORNHILL DEEP NEAR DAVENPORT, FL (USGS 281202081391701)


Graph: Water-level elevations from the past 35 years . Data used to produce this graph is available via the [data used] link on the page.D

Water-level elevations from the past 35 years.

Data used to produce the period of record hydrograph - past 35 years at PO-1 THORNHILL DEEP NEAR DAVENPORT, FL (USGS 281202081391701)

Description of information presented in the period of record hydrograph - past 35 years at PO-1 THORNHILL DEEP NEAR DAVENPORT, FL (USGS 281202081391701)

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)


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.


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