Drainage_and_Flooding_Report-dated_03-10-08

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City of La Porte Master Drainage plan Prepared For: City of La Porte Prepared By: O'Malley & Clay, Inc. Consulting Engineers December 1982 Not signed The content of this report include the presentation of recommended drainage design criteria description of drainage areas, runoff computations, recommended channel improvements, proposed drainage structures and cost estimates. Of primary importance are the maps showing the required channels and structures to handle the storm water runoff according to the design criteria. This Drainage Plan is a dynamis plan, meaning that it is subject to continuously changing conditions. The recommended improvements are based upon certain projected data base. As this data base changes in the future, The Drainage plan should be updated accordingly. This Drainage plan has information from the criteria of 1982 from the city of La Porte. The use of this report is to obtain drainage areas and storm system information from 1983. It does not state if the storm sewer systems are up have adequate capacity. It has cost estimates that are from 1983. The exhibits in this drainage plan show the existing drainage conditions, the runoff volume which must be transported, the flow lines, sizes and slopes of the proposed channels to accommodate the flows, required structures and minimum right-of-way needs. Since then there has been much improvements to the drainage criteria manual to consider new rainfall data and storm events. Drainage conditions and runoff volumes have changed since 1983 The value of this drainage plan is to get the existing conditions from 1982.