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kl o t assC,ciates <br />were described and prioritized (Task 4.2) with regard to the relative adverse impacts on <br />the residential areas. Reasons for drainage system deficiencies were categorized as a <br />preliminary to developing conceptual remedies. Conceptual remedies were generically <br />described, and preliminary unit cost factors to use in estimating remedy costs were <br />determined (Task 4.3). Potential funding sources for capital improvement projects <br />addressing drainage and flooding issues were identified (Task 4.4). Information <br />developed for Letter Report No. 3 was provided to the City Council and Flooding and <br />Drainage Committee (Task 4.2). <br />Management of the execution of work leading to these letter reports as well as the CWDS <br />Report was performed pursuant to Tasks 1.7, 2.3, 4.4 and 4.5. <br />1.4 CWDS Report <br />This CWDS Report brings together (pursuant to Task 4.5 of the study scope) the more <br />cogent aspects of the three letter reports to quantify the character of the problems as <br />deduced from both earlier evaluations in the three letter reports and application of the <br />hydrologic and hydraulic models to specific bayous and channels. This application <br />provides estimates of channel capacities and identifies where capacities are insufficient to <br />meet capacity design goals to further define the nature of the drainage problems in the <br />City (Task 2.2). Various workable remedies for achieving the design capacity are <br />identified at a conceptual level and approximately sized and located (Task 4.3). <br />Remedies include possible channel modifications and detention storage. Approximate <br />dimensions of modified channels are presented. Potential detention pond locations are <br />identified and storage requirements quantified. Remedies are described for the study <br />bayous on a bayou=by=bayou basis. Estimated costs of proposed remedies are provided <br />(Task 4.3) Potential ways to prioritize implementation of drainage improvements are <br />suggested. Issues in implementing the potential improvements are discussed and <br />recommendations are presented. <br />11 <br />Klotz Associates Project No. 0127.008.000 La Porte Citywide Drainage Study <br />January 2009 City of La Portr, <br />