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10-13-08 Drainage and Flooding Committee minutes
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10-13-08 Drainage and Flooding Committee minutes
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City Meetings
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Drainage and Flooding Committee
Meeting Doc Type
Minutes
Date
10/13/2008
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<br />k lot z .~. ass 0 cia t e s <br /> <br />identification of apparent critical drainage problems and definition of short term solutions to the <br />more critical problems. Sources of current drainage problems include inadequate channel <br />capacities, lack or blockage of sheet flow outlets, and inadequate storm sewer system capacity. <br /> <br />Letter Report No.2 dated May 7, 2008 also provided a description of flooding conditions using <br />hydraulic models to provide additional evaluation of critical drainage problems, and determine <br />potential storm sewer system limitations and possible solutions. Several short term solutions <br />were also proposed for sewer systems in four subdivisions currently experiencing significant <br />drainage problems? these are summarized in Table ES-2. Details of these particular solutions are <br />described in Letter Report No.2; Appendix C of the CWDS report following this summary <br />provides summary tables from Letter Report No.2 describing the proposed improvements. <br />Other concentrated studies were used to address a current solution in Creekmont Section 2 which <br />now nearing construction (see Project 45 in Table ES-2). <br /> <br />Letter Report No.3 examined drainage criteria and standards and made recommendations for <br />their improvement. Long term flooding problems were identified and prioritized. Conceptual <br />solutions were identified. Conceptual solutions which are considered practical for use in the City <br />are channel widening, channel lining, more effective use of overland storm flow relief pathways, <br />construction of diversion and detention ponds, upgrading of storm sewer systems, and use of <br />regional detention. Potential funding sources and mechanisms for drainage and flood control <br />infrastructure were discussed. <br /> <br />Drainage problems arise from high tides and surge induced by Galveston Bay storms; such tides <br />and surge impacts cmmot commonly be mitigated by drainage infrastructure improvement. To <br />limit storm surge impacts, considerations should be focused upon such options as early flood <br />warning systems for citizen protection for near shoreline areas, evacuation in severe storm <br />situations, construction of finished floor slabs and roadways above predicted storm-produced <br />high tides or surge levels, construction of coastal storage systems in conjunction with tide gates <br /> <br />EN-2 <br /> <br />Klotz Associates Project No. 0127.008.000 <br />January 2009 <br /> <br />La Porte Citywide Drainage Study <br />City of La Porte <br />
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