Hurricane Harvey Flooding Study

​Client: Confidential client (as subconsultant of WRCS)
​Year: 2017 - 2018
​
About: 
Hurricane Harvey produced extensive flooding upstream of the Addicks and Baker Reservoirs near Houston, Texas. Initial tasks focused on using HEC-RAS models and GIS tools to map the extent of flooding based on the measured peak water surface in each reservoir. Follow tasks included a spreadsheet analysis to evaluate the effect of operations of the outlet gates and to develop a 2-D model of the study area using the RiverFlow2D software.

Applied Skills:

• H&H Modeling: Mining & Processing; Conceptualization & Setup
• Flooding Mapping & Analysis​

Consulting Areas:

• Stormwater Management

Software Applied:

• HEC-RAS
• RiverFlow2D​
• ArcMap
• LAGO Toolbox

Specifics:
LAGO developed a 1D model of the study area using HEC-RAS and used model results to estimate the extent of flooding at peak stage upstream of the reservoirs.  LAGO also completed a detailed spreadsheet analysis to considered gate operations and the timing and duration of measured stages in the reservoir.  Finally, LAGO developed a 2-D model using RiverFlow2D to estimate the timing and duration of flooding during the storm.

​Outcome:
LAGO provided the results from this modeling study to the client that is using them to support the claims from affected property owners. 

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