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SWFWMD aquifer monthly report for August 2025
Environment  |  Sat - September 6, 2025 4:32 pm  |  Article Hits:114  |  A+ | a-

 

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
 
August Water Resource Monthly Update
 
Aquifer* Levels (percentile)
 
Regions **   Aug. 31
 percentile***		   Previous week percentile   Same date
last year percentile		   Normal range percentile****  
North   40   46   68   25-75  
Central   44   47   65   25-75  
South   38   38   50   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, the if 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.
 
2025 Rainfall (in inches) *



 
  Aug. 31 August Year to date January – August
  Actual ** Historic Avg.*** Normal Range*** Actual** Historic
Avg.***		 Normal Range***
North 7.13 8.07 6.55 – 9.62 31.51 39.75 35.16 – 44.64
Central 9.25 8.47 6.69 – 9.83 34.31 38.25 33.65 – 42.49
South 7.22 8.16 6.44 – 9.32 32.60 38.04 34.04 – 41.29
 
Historic Rainfall (January - December in inches)

The SWFWMD North Region's average historic rainfall (in inches) since 2011 is 53.52 inches, within the normal range of 48.63 - 58.09 inches. The North Region's historic rainfall in inches for 2023 through 2011:
  2024 - 58.57 inches        2023 - 48.00 inches        2022 - 46.98 inches        2021 - 60.87 inches  
  2020 - 47.77 inches        2019 - 57.02 inches        2018 - 66.66 inches        2017 - 52.41 inches        
  2016 - 48.49 inches        2015 - 52.04 inches        2014 - 61.12 inches        2013 - 50.54 inches        
  2012 - 55.81 inches        2011 - 48.35 inches

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

Florida's Five Water Management Districts:

The Southwest Florida Water Management District (SWFWMD) is one of five water management districts within Florida. The other water districts include the Northwest Florida Water Management District, the Suwannee River Water Management District, the St. Johns River Water Management District, and the South Florida Water Management District. 

Southwest Florida Water Management District (SWFWMD, nicknamed "Swiftmud"):
        Includes Citrus, DeSoto, Hardee, Hernando, Hillsborough, Manatee, Pasco, Pinellas, Sarasota and Sumter counties, and portions of Charlotte, Highlands, Lake, Levy, Marion and Polk counties.

South Florida Water Management District (SFWMD, nicknamed "Softmud"):
        Includes Broward, Collier, Dade, Glades, Hendry, Lee, Martin, Monroe, Palm Beach and St. Lucie counties, and portions of Charlotte, Highlands, Okeechobee, Orange, Osceola and Polk counties.

Northwest Florida Water Management District (NWFWMD):
        Includes Bay, Calhoun, Escambia, Franklin, Gadsden, Gulf, Holmes, Jackson, Leon, Liberty, Okaloosa, Santa Rosa, Wakulla, Walton and Washington counties, and a portion of Jefferson county.

Suwannee River Water Management District (SRWMD):
        Includes Columbia, Dixie, Gilchrist, Hamilton, Lafayette, Madison, Suwannee, Taylor and Union counties, and portions of Alachua, Baker, Bradford, Jefferson, Levy and Putnam counties.

St. Johns River Water Management District (SJRWMD):
        Includes Brevard, Clay, Duval, Flagler, Indian River, Nassau, Seminole, St. Johns and Volusia counties, as well as portions of Alachua, Baker, Bradford, Lake, Marion, Okeechobee, Orange, Osceola and Putnam counties.
 
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