Tampa Bay Region - Southwest Florida Water Management District

W290
Stormwater Improvements - Flood Control and Water Quality St. Petersburg
- Riviera Bay and Snell Isle Stormwater Vaults
Project Type
AORs
Water Quality
Flood Protection
SWIM
Strategic Initiatives
Water Quality Maintenance and Improvement
Emergency Flood Response
City of St. Petersburg
Cooperator(s)
Project Manager Lizanne Garcia
Task Manager(s)
Status
Proposed
Recommendation
Fund as a Medium priority. The proposed project addresses both localized flood control and water quality improvement. The area
proposed for installation has limited land and this type of treatment system is appropriate for this area. The applicant has good
past performance on a similar project (W271). The proposed project will provide water quality treatment to stormwater before
entering Tampa Bay, a SWIM priority Waterbody. The City has already begun design of the project and is anticipated to be ready to
go as soon as the cooperative funding application is approved.
Description
This project is in response to an FY2013 cooperative funding request from the City of St. Petersburg to construct 11 water quality
and flood protection vaults in the City’s Riviera Bay and Snell Isle Neighborhoods. The City is performing the design and permitting
in-house during FY2012. This project is similar to another cooperatively funded project with the City, W271 - Shore Acres
Stormwater Vaults. The vaults will be installed in existing stormwater pipes just upstream of their outfall into the surrounding
bayous, channels or Tampa Bay. Each vault will consist of two water quality elements and a flood protection element. The first
water quality element is a sump at the inlet of the vault which will provides an area for heavy solids; sand, grit, and other heavy
debris, to settle. The second water quality element is a screen for the capture and removal of trash and debris from the stormwater
runoff. The removal of the trash, debris and heavy solids from the stormwater runoff will provide an improvement to the surrounding
receiving water bodies and ultimately to Tampa Bay. The third element of the vault will be a backflow check valve. During a normal
rain event, the backflow valve will open to allow the runoff to flow into the receiving water body. During either a high tide or a storm
surge, the valve will close to prevent water from flowing backwards through the stormwater system and flooding the streets.
Benefits
The project provides water quality benefits to the surrounding water bodies through stormwater treatment and will provide some
protection from flooding.
Costs
The total estimated project budget is $1,000,000 for construction with the District and the City each contributing 50 percent
($500,000). The proposed FY2013 project budget is $500,000. District funds shown in the table include staff salaries.
Additional Information
Tampa Bay is the District's top priority Surface Water Improvement and Management (SWIM) program waterbody, and is
considered an "estuary of national significance" with the designation of the Tampa Bay Estuary Program. Since 1950, about 50
percent of the bay's natural shoreline and 40 percent of its seagrass acreage were lost as a result of physical destruction and
water quality impairment. This resulted in a decline in the aesthetic, recreational, and commercial value of the bay, as well as a
loss of habitat for native plants and animals.
Prior
Funding
Cumulative
Transfer or
Lapsed Funding
FY2012
Funding
FY2013
Funding
Future
Funding
Total
Funding
District Budgeted - Ad Valorem
Based Revenue
016 Pinellas-Anclote River Basin 0 0 0 500,000
0 500,000
Project Funds Not Budgeted by the
District
St. Petersburg 0 0 0 500,000
0 500,000
Total
$1,000,000
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