April 28 2015 Stormwater Detention Facilities for CityWide Stormwater Management Master Plan To anticipate the need for additional services and infrastructure to provide opportunities for mixed use development with goods services and employment ID: 642914
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Slide1
Prepared for
City of Palm Coast, Florida
April 28, 2015
Stormwater Detention Facilities
for City-Wide Stormwater Management Master Plan Slide2
To anticipate the need for additional services and infrastructure to provide opportunities for mixed use development with goods, services, and employment.
Goal 1
ExpansionSlide3
Section NumbersSections Already Modeled
Sections Being Modeled
City of Palm Coast Modeling Status
12
3
4
5
6
7
89101112131415161718192021222324252627282930313233343537395758596063646581Slide4
City of Palm Coast Modeling StatusSlide5
Section 35 High water levels due to
Constrictions at London Drive, US 1 (to Hulett Branch) I-95 (to Mulberry Creek)
Home flooding predicted in < 1 % of homes (all in Bird of Paradise area) Number of homes below City standard for 100-year event = 11 %
Secondary drainage deficiencies - 10 year event = 2
Modeling ResultsSlide6
Section 35 (“B” Section) – Level of Service
Deficient secondary roads = 2
Secondary drainage deficienciesSlide7
“B” Section (Section 35) Improvements - 2014Ditch and Pipe Modifications
(Bunker Hill Drive to Burnaby Lane)
2014 Program ResultsSlide8
Section 37 High water levels due to
Constrictions at London Drive, US 1 (to Hulett Branch) I-95 (to Mulberry Creek)
No home flooding predicted Number of homes below City standard for 100-year event = 9 % Secondary drainage deficiencies - 10 year event =
6
Modeling ResultsSlide9
Section 37 (“L” Section) – Level of Service
Deficient secondary roads = 6
Secondary drainage deficienciesSlide10
“L” Section (Section 37) Improvements - 2015Ditch and Pipe Modifications
(Lindsay Drive to Lancelot Drive)
2015 Program ResultsSlide11
Sections 35 & 37 – Recommended Capital Improvements
Possible Detention
Storage Locations
~100-acft required in total Slide12
System Performance Evaluation F
or Homes:
Home flooding evaluated relative to base flood (i.e., 100-year storm)City has required 1 foot of freeboard above 100-year elevation
Level of Service Evaluations
FreeboardSlide13
Model Results
Level of Service Improvement:Homes below 100-year City standard reduced by 63 %
Homes remaining below 100-year City standard = 4 %All secondary deficiencies eliminatedSlide14
Recommended Improvement Plans based on Modeling Results for Section 35 and Section 37
Section 35 Improvements:
Ditch and Pipe ImprovementsDesign Completed Construction Completed
Section 37 Improvements:Ditch and Pipe Improvements
Design CompletedConstruction is 50% CompleteFloodplain Storage Creation
Proposed areas include three general locations along the
Belleaire
canal waterway in Section 37.
Design, Permitting, and Construction Services proposed.Slide15
Next Step for Implementation Section 37 Floodplain Storage Permitting and Design Services
Scope of Services is in two Phases:
Phase 1:Initial survey, environmental, and geotechnical services
Provide preliminary layout of proposed design (30% Plans)
Phase 2:Finalizing proposed design Prepare construction plans and permitting
S
taff recommends approving a work order for
Section 37 Floodplain Storage Permitting and DesignSlide16
QUESTIONS?