About

PHASES

PHASE 1

Implementation Framework

PHASE 2

Watershed Evaluation & Stormwater Master Plan Recommendations

PHASE 3

Development of 20-Year Stormwater Capital Improvement Plan (CIP)

The Stormwater Master Plan was developed in three phases, with each phase involving numerous activities. 

PHASE 1: Implementation Framework
This phase, now complete, included many activities and resulted in the development of the Implementation Framework that provided the summary of initial work and detailed the next steps to be completed in Phases 2 and 3. 

  • Developed a regional model
  • Conducted a visioning workshop with key Parish staff
  • Completed a preliminary risk analyses
  • Completed applications for Hazard Mitigation Grant Program
  • Drafted Stormwater Master Plan Implementation Framework document 

 

PHASE 2: Watershed Evaluation & Stormwater Master Plan Recommendations
This phase continued the work performed in Phase 1 evaluating each of the parish’s 11 watersheds to determine flood risks and mitigation, engaging the public, reviewing ordinances, and drafting the Stormwater Master Plan. Phase 2 included the following activities 

  • Data collection & organization to understand the existing stormwater systems: Performing channel and subsurface drainage system surveys, and obtaining the LiDAR data necessary for refining hydraulic models  
  • Public outreach and agency coordination: A Public Engagement Plan for communications with stakeholders and partners
  • Assessing the hazards: Hydraulic models for existing and future conditions were used to determine the extent and causes of flooding
  • Assessing the problems that result from the hazards: Buildings and infrastructure impacted by flooding and their relative risk from existing and future conditions were identified
  • Coordination with the parish and key stakeholders that established criteria, guidance, and ordinances for addressing and reducing existing and potential future levels of flooding risk
  • Development of activities to mitigate the hazards: Concept level engineering identified projects for flood risk reduction in areas with significant numbers of homes, businesses and infrastructure, as well as updated ordinances/regulations for future development
  • Draft Stormwater Master Plan

 

PHASE 3: Development of 20-Year Stormwater Capital Improvement Plan (CIP)
This final phase combined all information from the various phases into one comprehensive Stormwater Master Plan document. 

  • Development and adoption of final Stormwater Master Plan action plan: Specific informed recommendations for ordinance and regulation changes, a prioritized list of projects to address existing and/or anticipated future flooding risks, and a maintenance plan strategy.
  • 20-Year Stormwater Capital Improvement Plan developed to take the list of projects determined during the development of the Stormwater Master Plan and prioritize them based on predetermined criteria, including a funding and financing plan.