Rocky Brushy Creek Watershed Mgmt. Plan (2007) -- Part 2

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EXISTING NATURAL SYSTEMS CONDITIONSwhitetop sedge, Rhynchospora coloratawhite water lily, Nyphaea odoratawild taro, Colocasia esculentawiregrass, Aristida beyrichianayellow butterwort, Pinguicula luteayellow-eyed grass, Xyris sp.ANIMAL SPECIESReptilesAmerican alligator, Alligator mississippiensiseastern indigo snake, Drymarchon corais couperigopher tortoise, Gopherus polyphemusBirdsFlorida burrowing owl, Athene cuniculariaFlorida scrub jay, Aphelocoma coerulescensLittle blue heron, Egretta caeruleaLimpkin, Aramus guaraunaPeregrine falcon, Falco peregrinusReddish egret, Egretta rufescensRoseate spoonbill, Ajaia ajajaSandhill crane, Grus canadensisSoutheastern American kestrel,Snowy egret, Egretta thulaTricolored heron, Egretta tricolorWhite ibis, Eudocimus albusWood stork, Mycteria americanaMammalsSherman’s fox squirrel, Sciurus niger shermaniWest Indian manatee, Trichechus manatus latirostris8-62Rocky/Brushy Creek Watershed Management Plan
CHAPTER 9: WATER SUPPLY9.1 OverviewThe combination of increased water demand with the highly karstic nature of the watershed’sgeology has resulted in the development of a number of critical issues relating to water supply,including:• lowered average water levels and increased fluctuations in lakes and wetlands• declines in average elevations of the potentiometric surface and the water table• increased annual fluctuations in the elevations of the potentiometric surface and the watertable• reduced streamflows in the Rocky/Brushy Creek system• saltwater contamination of inland and coastal groundwater sources due to lateral salineintrusion and upconing• reduced reliability of private water supply wells• increased sinkhole occurrence• contamination of groundwater resources by septic tanks and stormwater runoffAs a result of these issues, increased emphasis has been placed on the development of alternativewater supply sources, reuse, off-line reservoirs, surface water withdrawals, aquifer storage andrecovery, and water conservation programs in the region. In 2002, an estimated 36% of theCounty’s water demand was supplied by surface waters, a figure that is 3% higher than in 1993.This entire amount was derived from the Hillsborough River Reservoir system which provides themajority of the City of Tampa’s water supply. The reservoir system includes the HillsboroughRiver, Sulphur Springs, and the Tampa Bypass Canal. Groundwater resources occur throughoutthe County; however, higher quality groundwater is typically found with increasing distances fromthe coast.Sinkhole formation occurs throughout the county with most occurrences reported in northern andwestern Hillsborough County. Northwest Hillsborough county is considered to be an area of “verynumerous” sinkhole formation, particularly the cover – collapse category of sinkholes that occurabruptly. The Florida Department of Environmental Protection (FDEP) Sinkhole Database (2006)lists a total of 84 sinkholes have been reported in the Northwest Hillsborough area, many of whichoccurred in the vicinity of the Cosme, Section 21, and Eldridge – Wilde Wellfields. For example,within 1 month of increasing the pumping rate at Section 21 wellfield, 64 new sinkholes formedwithin a 1-mile radius of the well field. Most of the sinkholes were formed in the vicinity of well 21-10, which was pumping at nearly twice the rate of the other wells. Neighboring areas also noticeddramatic declines in lake levels and dewatering of wetland areas. At this point it is recognized that9-1 Rocky/Brushy Creek Watershed Management Plan
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CHAPTER 8: EXISTING NATURAL SYSTEMS
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CHAPTER 8Using the data described i
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CHAPTER 8Land uses and cover types
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LegendRoadsHydrographyAgriculturalB
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CHAPTER 8Hardwood conifer mixed for
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CHAPTER 8Mangrove swamps (612)The a
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CHAPTER 8consist solely of mud into
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CHAPTER 8use. Urban inactive land i
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CHAPTER 8enhance drainage for rows
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State Road 54Pasco CountyHillsborou
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CHAPTER 8buffer zones should be est
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CHAPTER 8Factors such as the width
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CHAPTER 88.5.4 Biological Indicator
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CHAPTER 8The presence of wildlife o
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CHAPTER 8Table 8-9Protected Animal
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CHAPTER 8problems; and8. informing
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CHAPTER 8the entire surface of some
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CHAPTER 8Wild TaroThe wild taro is
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CHAPTER 8The FDEP Bureau of Land Ac
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CHAPTER 8Funding Program (NRTFP). T
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CHAPTER 8Hillsborough CountyWetland
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CHAPTER 84. Hillsborough County Str
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CHAPTER 8innovative, interdisciplin
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CHAPTER 8• Developing and support
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CHAPTER 88.9 BibliographyThe attach
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CHAPTER 8Southwest Florida Water Ma
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CHAPTER 8Chinese laddere brake, Pte
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CHAPTER 8: EXISTING NATURAL SYSTEMS
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CHAPTER 8Using the data described i
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CHAPTER 8Land uses and cover types
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LegendRoadsHydrographyAgriculturalB
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CHAPTER 8Hardwood conifer mixed for
Page 73 and 74: CHAPTER 8Mangrove swamps (612)The a
Page 75 and 76: CHAPTER 8consist solely of mud into
Page 77 and 78: CHAPTER 8use. Urban inactive land i
Page 79 and 80: CHAPTER 8enhance drainage for rows
Page 81 and 82: State Road 54Pasco CountyHillsborou
Page 85 and 86: CHAPTER 8buffer zones should be est
Page 87 and 88: CHAPTER 8Factors such as the width
Page 91 and 92: CHAPTER 88.5.4 Biological Indicator
Page 95 and 96: CHAPTER 8The presence of wildlife o
Page 97 and 98: CHAPTER 8Table 8-9Protected Animal
Page 99 and 100: CHAPTER 8problems; and8. informing
Page 101 and 102: CHAPTER 8the entire surface of some
Page 103 and 104: CHAPTER 8Wild TaroThe wild taro is
Page 105 and 106: CHAPTER 8The FDEP Bureau of Land Ac
Page 109 and 110: CHAPTER 8Funding Program (NRTFP). T
Page 111 and 112: CHAPTER 8Hillsborough CountyWetland
Page 113 and 114: CHAPTER 84. Hillsborough County Str
Page 115 and 116: CHAPTER 8innovative, interdisciplin
Page 117 and 118: CHAPTER 8• Developing and support
Page 119 and 120: CHAPTER 88.9 BibliographyThe attach
Page 121 and 122: CHAPTER 8Southwest Florida Water Ma
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Page 127 and 128: CHAPTER 9Hillsborough County Compre
Page 129 and 130: CHAPTER 9Figure 9-1A Tampa Bay Wate
Page 131 and 132: Pasco CountyHillsborough CountyEldr
Page 133 and 134: CHAPTER 9Total per capita water use
Page 135 and 136: CHAPTER 9Groundwater levels in the
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Page 139 and 140: CHAPTER 9The recovery strategy invo
Page 141: CHAPTER 9Southwest Florida Water Ma
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Rocky Brushy Creek Watershed Mgmt. Plan (2007) -- Part 2

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