Tampa Bay Region - Southwest Florida Water Management District

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SOUTHWEST FLORIDA WATER MANAGEMENT DISTRICT
FY2014 COOPERATIVE FUNDING INITIATIVE APPLICATION FORM
Project Name
Stormwater Improvements - Flood Protection - Hillsborough County - Providence Road
Project Number N436
Cooperator
Hillsborough County BOCC
Department
Contact Person James Barrington
Address
601 E. Kennedy Blvd, 20th Floo
City Sate Zip Tampa, FL 33602
Phone # 813-307-4427
Email
barringtonj@hillsboroughcounty.org
Project Type:
Water Supply X Water Quality X Flood Protection X Natural Systems
Strategic Initiatives:
X Water Quality Maintenance and Improvement Water Quality Monitoring
Alternative Water Supply Conservation
Reclaimed Water Regional Water Supply Planning
X Emergency Flood Response
X Floodplain Management
Minimum Flows and Level Establishment and Monitoring Minimum Flows and Levels Recovery
X Natural Systems Conservation and Restoration Natural Systems Identification and Monitoring
Indicate All Counties to Benefit From Project:
Charlotte Citrus Desoto Hardee Hernando Highlands X Hillsborough Lake
Levy Manatee Marion Pasco Pinellas Sarasota Sumter Polk
Project Description:
District has approved $500,000 for this project in FY13 Cooperative Fund distribution.
The Alafia River watershed management master plan study was completed in 2001, updated 2010. Many projects were identified to
alleviate flooding, enhance water quality, and protect the natural system. AR-4, Providence Road drainage improvement, is one of
the projects to be implemented.
In the Tributary N-11 drainage system, which drains Providence Road and Crescent Lake Drive, there are two flooding LOS
deficiencies that were identified in the flooding conditions assessments. The modeling results indicate that 0.9 feet of water will
inundate the intersection of Providence Road and Watson Road during the 25-year storm. This flooding problem is one of the most
severe with respect to both flood depth and extent of inundation in the entire watershed, and was clearly evident during and after
the Tropical Storm Gabrielle in September 2001. This intersection was inundated by > a foot of water, severe road, property and
house flooding occurred downstream of this intersection all the way to the Alafia River. It was flooded during Hurricane Frances
(2004) with 5 separate flooding complaint locations including; Watson Rd/Providence Rd intersection, Two other Providence Rd.
locations, Cresent Lake Dr and Mathers Ln.
The entire drainage system from the Watson Road intersection to the river needs improvements to alleviate flooding. Almost every
driveway culvert in the Providence Road channel downstream of this intersection is crushed, buried or silted up. The problem is
compounded by the extremely flat grade of the channel. A LOS deficiency was also identified at the cross drain under Crescent
Lake Drive, which is part of the downstream drainage system. Further downstream is the Alafia Drive cross drain where both
structures are unmaintained, aged and insufficient. Additionally, the channel downstream of the Alafia Drive crossing is undersized
and needs to be widened to convey the higher flows resulting from removing the upstream constrictions in the drainage system.
The alternative includes the replacement of all the undersized culverts within the Crescent Lake Drive/Providence Road
conveyance system with 4’ x 8’ or 5’X8’ RCBCs and upgrade the creeks and ditches.
Describe your organizations efforts in developing, implementing and enforcing water conservation and flood protection
ordinances.
Water Conservation: Hillsborough County was the premier local government to criminalize the violation of water use restrictions,
and to adopt a civil citation process for the enforcement of the same in July 1993. A fulltime Water Conservation Manager assures
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