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You are here: Home / Utilities, Energy / Aquifer Weekly Water Resource – January 11, 2019

Aquifer Weekly Water Resource – January 11, 2019

January 11, 2019 by Post

The Southwest Florida Water Management District urges year-round water conservation. Water levels may rise and fall, but our water resources remain limited. The District encourages efficient, non-wasteful uses of water to sustain our high quality of life. For more information about ways to conserve water, contact the District at 1-800-423-1476 or visit the District’s website at WaterMatters.org.

Water Resource Weekly Update

Aquifer* Levels (percentile)

Regions **Jan. 8 percentile***Previous week percentileSame date 
last year percentile
Normal range percentile****
North91916025 – 75
Central85855925 – 75
South767847       25 – 75

* Aquifers are underground layers of rock and sand that hold water. In southwest Florida, more than 80 percent of the water supply comes from aquifers.

** North (Citrus, Hernando, Lake, Levy, Marion and Sumter counties)

Central (Hillsborough, Pasco, Pinellas and Polk counties)

South (Charlotte, DeSoto, Hardee, Highlands, Manatee and Sarasota counties)

*** The percentile compares current aquifer levels to historical levels during the same time of year on a scale of 0-100. For example, if the groundwater level is at the 50th percentile, it means that half of the historical levels for this time of year were higher and half were lower than the current level.

**** Any level that falls between the 25th and the 75th percentile is considered normal. Less than the 25th would be considered below normal and above the 75th percentile is above normal.

2019 Rainfall (in inches) *

 Jan. 8JanuaryYear to dateJanuary
 Actual **Historic Avg.***Normal Range***Actual**Historic
Avg.***
Normal Range***
North0.572.791.48 – 3.960.572.791.48 – 3.96
Central0.552.491.20 – 3.550.552.491.20 – 3.55
South0.342.150.95 – 3.160.342.150.95 – 3.16

Historic Rainfall (January – December in inches)

 20182017201620152014201320122011Jan. through Dec.
 ActualActualActualActualActualActualActualActualHistoric Avg.***Normal Range***
North66.6652.4148.4952.0461.1250.5455.8148.3553.4548.62 – 58.07
Central59.6251.3755.3857.2756.1647.9250.3053.4452.3646.77 – 56.55
South56.5357.4356.7954.2452.5752.6447.3646.4052.4447.04 – 57.17

* The rainfall values for the current month and year are considered provisional and subject to revision. The other annual figures are final.

** Actual rainfall for the time frame referenced at the top of the column.

*** Historical average rainfall for the time frame referenced at the top of the column. The District’s historical rainfall records date back to 1914. The “normal range” is defined as rainfall totals that fall on or between the 25th to 75th percentile values derived from the historical data for each month.

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