Drainage_and_Flooding_Report-dated_03-10-08

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klotzassociates March 10, 2008 Mr. Ron Bottoms City. Manager City of La Porte 604 W. Fairmont Parkway LaPorte, Texas 77571 RE: City of La Porte, Texas City -Wide Drainage Study Study Letter Report #1 Klotz Associates Project No. 0127.008.000 Dear Mr. Bottoms: 1160 Dairy Ashford, Suite 500 Houston, Texas 77079 T 281.589,7257 F 281.589.7309 houston.office@klotz.com Klotz Associates was authorized to proceed with a City -Wide Drainage Study (CWDS) for the City of La Porte on January 28, 2008. Klotz Associates is pleased to submit this letter report for the completion of Tasks 1.1 through 1.7 of Phase I as prescribed in the contracted Scope of Work. Purpose The purpose of this letter report is to identify key drainage and flooding issues that are currently adversely affecting the City. These drainage and flooding problems were identified through a process of data gathering, site visits, characterization and evaluation of existing drainage, and identification of consequent drainage and flooding problems that might be expected to occur in the future if not addressed by drainage improvements or other corrective actions. Studied Area The studied area, located completely in Harris County, Texas, is the entire City of L.a Porte (City). The City is located on the extreme east side of Harris County on the shores of Galveston Bay (see Exhibit 1). The City is bounded by the City of Deer Park on the west, State Highway 225 on the north, the community of Shore Acres and properties of the Port of Houston on the south, and is bisected by State Highway 146 in a generally north -south direction. The City's boundaries encompass approximately 19.7 square miles. The City has a mixture of residential, industrial and commercial land uses. The area between Fairmont Parkway and Spencer Highway is largely small lot residential areas while some of the areas north of Spencer Highway are typical residential lot developments and some area have large lot rural residential areas. Areas east of SH 146 include residential lot developments, commercial areas and industrial areas. Part of the