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Last modified
1/26/2010 10:09:46 AM
Creation date
10/5/2006 4:28:38 AM
Metadata
Fields
Template:
Floodplain Documents
County
Statewide
Community
Dallas, Texas
Basin
Statewide
Title
Effects of Urbanization on Floods in the Dallas Texas Metropolitan Area
Date
1/1/1974
Prepared By
USGS, City of Dallas
Floodplain - Doc Type
Educational/Technical/Reference Information
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<br />Table 3.--Zoning categories and average percentage of impervious area <br /> <br />Zoning category Description Plot size Average <br /> designation (sq i't) iffiGerViOUS area <br /> percentage) <br /> R-E Residential estate >43,560 9 <br /> R-l Residential dwelling 43,560 17 <br /> R-l/2 Residential dwelling 21,780 38 <br /> R-16 Residential dwelling 16,000 43 <br /> R-IO Residential dwelling 10,000 46 <br /> R-7.5 Residential dwelling 7,500 46 <br /> R-5 Residential dwelling 5,000 50 <br /> M-F Multiple-family dwelling variable 72 <br /> SCH Schools variable 35 <br /> CH Churches variable 85 <br /> C Commercial district variable 85 <br /> SC Shopping center district variable 100 <br /> IND Industrial district variable 72 <br /> FW Freeway variable 100 <br /> OL Open land 1/ variable 1 <br />y Open land in rural areas and public parks increased to 1.0 percent to <br /> account for roads, drives, and scattered buildings. <br /> <br />I <br /> <br />-12- <br />
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