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  C-43 Reservoir: MODFLOW Modeling

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​Client: South Florida Water Management District (sub-consultant to Carollo Engineers)
​Year: 2017-2018
​

About: 
LAGO provided seepage modeling support to the geotechnical studies conducted for the C-43 Reservoir design. LAGO developed seven (7) local MODFLOW models at different locations along the reservoir berm. The resulting steady-state heads from the 3-dimensional groundwater model were provided to the geotechnical experts at Terracon to evaluate slope stability of the canals, uplift pressures beneath structures, etc.
Applied Skills:
  • Groundwater Modeling: Data mining and processing
  • Model Conceptualization & Setup

​Consulting Areas:
  • Groundwater management

​Software Applied:
  • MODFLOW (GWV)
  • ArcMap
  • LAGO Toolbox
Specifics:
  • Grid cell size = 10 ft
  • Layer Thickness = 2 to 10 ft, from top to bottom
  • Geological Model: top and bottom elevation map from kriging interpolation of boring well data 
  • Lateral boundary conditions from heads extracted from regional MIKE SHE model
  • Bentonite wall in berm, relief trenches, and sheet piling were considered
  • Software script developed to process the data into GWV input files
  • MODFLOW heads are extracted at specific points of interest by using proprietary software tools.
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Outcome:
The results of the 3D groundwater modeling effort were used as input of the geotechnical analysis of the features at the C-43 Reservoir.
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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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