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Driftwood Drive Drainage Study, City of La Porte Pond to Park Project <br />Prepared For: City of La Porte <br />Prepared By: CivilTech Engineering, Inc. <br />June 2004 <br />Signed By: Michael D. Lacy <br />T he purpose od this report is to present the findings of the drainage analysis of <br />Driftwood drive and provide recommendations to the City of La Porte for the street <br />ponding. CivilTech was asked to investigate and determine possible solutions that would <br />alleviate street ponding and better utilize the storage capacity of the existing detention <br />pond. The recommendations are that the receiving channel be cleaned out and properly <br />maintained in the future to allow the system to function better for high frequency storms. <br />The maintenance of this channel is the responsibility of HCFCD, but the City should <br />perform this maintenance if HCFCD refuses to do so. Another recommendation would <br />be to consider upgrading the storm sewer system on Driftwood Dr. in the near future. <br />The three-year design frequency should be met at an absolute minimum to eliminate <br />street ponding in high frequency events and to protect against structural flooding in <br />extreme events. <br />