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You are here: Home / Utilities / Aquifer Monthly Water Resource, August 30, 2013

Aquifer Monthly Water Resource, August 30, 2013

September 1, 2013 by Press Release

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 Monthly Update

August 30, 2013

 

Aquifer Levels (in feet) *

 

Regions ** August 28 Previous week Same date
last year
Normal range ***
North 1.94 1.63 2.91 0 to +3
Central 4.22 3.60 4.24 0 to +5.5
South 2.59 2.33 1.00 0 to +8

 

* 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)

 

*** Aquifer levels normally fluctuate to varying degrees in different regions. The normal range shows how much each region normally fluctuates, with 0 as the bottom of the normal range.

 

**** Readings show how current levels compare to normal ranges for this time of year. Anything below a zero is below the normal range.

 

2013 Rainfall (in inches) *

 

  August 1-27 August Jan-Aug Jan-Aug
  Actual ** Historic
Avg. ***
Actual Historic
Avg.
North 8.04 7.96 36.39 39.73
Central 7.64 8.40 37.43 38.24
South 7.93 8.04 40.15 38.12

 

Historic Rainfall (January – December in inches)

 

  2012 2011 2010 2009 2008 2007 2006 2005 2004 Jan–Dec
  Actual Actual Actual Actual Actual Actual Actual Actual Actual Historic Avg.
North 55.81 48.35 49.61 50.63 49.30 45.43 38.73 58.85 62.50 53.50
Central 50.30 53.44 49.29 51.56 46.64 41.44 43.13 51.62 68.52 52.29
South 47.36 46.40 48.61 48.84 47.37 38.53 42.28 61.65 62.65 52.31

 

* 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.

 

Lake Levels (in feet, relative to MLM) *

 

Regions ** August levels Previous month Same date last year
Northern -1.78 -1.84 -1.55
Tampa Bay 1.53 1.52 1.72
Polk Uplands -0.53 -0.69 -0.67
Lake Wales Ridge -1.13 -1.93 -2.97

 

* Each month the District measures water levels in 76 lakes. The lake levels are compared to the lakes’ adopted minimum low management (MLM) levels. The MLM level is how low each lake has historically dropped at the end of the dry season each year.

 

** Northern (Citrus, Hernando and Sumter counties)

Tampa Bay (Hillsborough and Pasco counties)

Polk Uplands (Northern Polk County)

Lake Wales Ridge (Portions of Polk and Highlands counties)

 

Streamflows *

 

  Aug percentile ** Previous month percentile Same date last year percentile Normal range percentile ***
Withlacoochee River near Holder 25 25 69 25-75
Withlacoochee River near Trilby 45 65 80 25-75
Hillsborough River near Zephyrhills 43 80 77 25-75
Peace River at Arcadia 80 90 43 25-75
Peace River at Bartow 54 45 33 25-75

 

* Streamflow, also known as discharge, is the volume of water passing a location in a certain amount of time, usually measured as cubic feet per second.

 

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

 

*** Any flow 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 above normal.

 

 

 

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