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Flood Study Western Utility Complex

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Client: City of New Smyrna Beach
(Sub-Consultant to McKim & Creed)
​
Year: 2019 - Ongoing
​
​​About: 
The Western Utility Complex will be constructed in an approximately 900-acre property located northwest from the intersection of State Road 44 and Interstate 95. As part of the permitting process, it was proposed that a flood study in the area be commissioned. The main objectives of the proposed flood study are to determine the BFE for the area and to evaluate and reduce potential negative impacts of the proposed development.
Services:
  • H&H Modeling: Data Mining & Processing; Conceptualization & Setup
  • Flood Mapping
Consulting Areas:
  • Stormwater Management
  • Flooding Studies
​Software Applied:
  • ​EPA-SWMM5
  • ArcMap
  • ArcHydro
  • Fill Sinks Plus
  • SWMM5 to Shp
Specifics:
The project specific tasks included:
  • Data Collection and Evaluation
  • Existing Conditions Model
  • Post Development Model
As part of the data collection task a Field Reconnaissance of drainage features. The subbasins and flow paths is based on this collected field information and in the LiDAR based DEM that was processed by using ArcHydro. 
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​An EPA-SWMM5 existing conditions model was built around the project area. The results from the 100-year design storm event were processed to produce pre-development BFE and flood depth maps. Then, the existing conditions model will be modified to include the changes that would result from the development, including the new proposed drainage features. Results from pre- and post-development models will be compared to evaluate the effect of the development in water levels and discharges from the area. Modifications to the proposed design will be evaluated to reduce or eliminate predicted negative impacts from the development.
Outcome:
​​Technical Memoranda summarizing the results of the flood study are provided to assist the Design and Environmental Permitting team of the project.
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Modeling Services
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- Data mining & Processing
- Conceptualization & Setup
- Sensitivity Tests
- Model Calibration
- Model Telescoping
- Design Storm Simulations
- Scenario Evaluations
​- Post-Processing of results
- Peer review
- Model QA/QC
- Mass balance checks
- Fixing numerical instabilities
- Calibration/validation checks
​- Reservoir Storage Modeling
- GIS data mgmt. and tools

Consulting Areas
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- Natural resources planning
- Stormwater management
- Groundwater management
- Surface water structure design
- Water supply planning
- Species and sediment transport
- Salt water intrusion
- Floodplain delineation & management
- Floodway Encroachment Analysis
​- Urban and coastal flooding
- Water quality studies
- Wetland conservation and restoration
- Wellhead protection area delineation
- Landscape ecology
- Water regulations permitting

Featured Software
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MIKE 11
MIKE SHE
MIKE21
ECOLab
MODFLOW
GWV (Vistas)
MODHMS
​GIS-ArcMap

HEC-RAS
​HEC-HMS
EPA-SWMM
​XP-SWMM
ICPR
​RiverFlow2D
WASP
HSPF

Software Development
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Spreadsheet modeling
File format converters
Pre- & post-processing tools
A la carte software (C#, Python, etc)


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