COLLIER COUNTY WELLHEAD VULNERABILITY ASSESSMENT
Client: Collier County (as a sub-consultant to WSA)
Year of Completion: 2015
The Collier County contracted the services to evaluate the feasibility of using the MIKE SHE/MIKE11 software with the particle tracking module in order to define wellhead protection zones.
Specifics: LAGO imported model inputs from the previous model (that has been used in the past to define wellhead protection zones for the County) into the MIKE SHE/MIKE11 County-wide model. The particle tracking analysis was used to obtain the capture zones around the well fields for 1-, 2-, 5-, and 20-years period. One telescoped model at higher resolution is also developed to illustrate the benefit of using higher resolution.The modeling study indicated that the county-wide MIKE SHE results were very good at producing comparable results as the previous model for the 20-year wellhead protection zone. However, due to the coarseness of the model grid, the 1- and 2- year protection zones were not well defined. On the other hand, the results from the telescoped model were considered to be satisfactory for the 1-, 2-, 5-, and 20-year wellhead protection zones.
+ Integrated modeling: Model Setup and Telescoping
+ Surface and ground water management
+ Particle Tracking/ capture area delineation
+ MIKE SHE / MIKE11, LAGO Toolbox
It was concluded that high resolution MIKE SHE models would be appropriate tools for using in completing future wellfield vulnerability assessments.