water strategy task force august 11, 2014. background figure 1. stream functions pyramid highlights...
TRANSCRIPT
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CITY OF BONITA SPRINGS
Water Strategy Task ForceAugust 11, 2014
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BACKGROUND
Figure 1. Stream Functions Pyramid Highlights Stream Restoration Foundations Needed to Attain Higher Level Functions
(http://www.fws.gov/chesapeakebay/newsletter/Fall11/Pyramid/Pyramid.html).
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HISTORY
Worked in and around watershed for more than three decades
Have made flow measurements during and following major events
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1944 CONDITIONS
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2014 CONDITIONS
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BACKGROUND
Generally flows are from the northeast to southwest Low flows occur from the commonly accepted watershed The larger the rainfall event/season, the more water that
will enter from the Corkscrew Watershed from the east
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BACKGROUND
Basin Management Action Plan for Nitrogen TMDL on freshwater portion of river
Watershed is from BUS 41/SR 739 to SR 82 Overall Nitrogen reduction is 23% Reduction is planned over three five-year periods City of Bonita Springs’ reduction is 3,301#/year
(2,058#/year of credit and 1,243#/year supplement)
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SFWMD Permits– Mine– Citrus Park– Liberty Youth Ranch
298 District BoundaryWatershed Boundary (Halfway Creek/Imperial River)
BACKGROUND
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BONITA 1944
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BONITA 1952
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BONITA 1958
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Hidden Preserve
PineLake
Preserve
BONITA 1958
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DISCUSSION
Density Intensity
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FLOW REGIMES
Existing developments have three major types of discharge:– None– Gravity– Pump
Today SFWMD prefers gravity and will generally only allow a pump system with a single entity as system operator such as a governmental body
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SOLUTIONS
Do nothing Alter design criteria for new projects Provide incentives for upgrades to existing properties
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Fix only items that are created by needs of City and not rest of watershed
The City’s DRGR, as many have stated, is small relative to the Lee County portion and it is at the downstream end
SOLUTIONS
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LID– Rain Gardens
Filter Marshes Pervious Pavement (+/-)
SOLUTIONS
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Spring Creek– Challenge of 298 District– Interstate openings
Rosemary Canal
SOLUTIONS
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QUESTIONS?
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