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<br />San Marcos Floodplain Management Plan: A Sustainable Future for Floodplain Management <br />Application for Flood Protection Study Grant <br /> <br />18. A description of how the planning will address public safety and welfare. <br />Minimi7.ing the risk of flood damage to lives and property is the primary stated goal of <br />this effort (see Response #12 above). Inherently, this is a public safety and welfare goal. <br />Tangx"bly, however, the planning effort will first identify and quantify the nature of the <br />risk, and make this information available to the public. Secondly, the planning will <br />identify capital improvements that mitigate the risk, and will be prioritized according to <br />the risk to public safety and welfare. <br /> <br />If flood protection planning and mitigation are not sought, the risks to public safety and <br />welfare are: <br />a. Out-of-bank flooding and loss of life. <br />b. Out-of-bank flooding and loss of property. <br />c. Disruption of critical infrastructure, including roadways, power, emergency <br />response, water and wastewater operations. <br />d. Stream bank erosion and subsidence. <br />e. Failure of structures as a result of scour around foundations. <br />f. Secondary drainage system failure. <br />g. Public health concerns, such as waterborne diseases from sanitary sewer overflow <br />and stagnant water in the period after flooding, mosquitoes, and dead animals. <br />h. Displacement of wildlife, which may respond aggressively to humans returning to <br />damaged areas. <br /> <br />The proposed planning area is also mown to have considerable problems with secondary <br />conveyance systems. Although these systems are not proposed for analysis within this <br />effort, they are hydraulically connected to the Blanco and San Marcos Rivers, and thus <br />extend the risks to public and safety and welfare beyond the regulatory floodplain. <br /> <br />19. Current unemployment rate in the proposed planning area. <br />The City of San Marcos' unemployment rate is 7.2% according to the 2000 Census <br /> <br />20. Current per-capita income in the planning area. <br />$13,468 (2000 Census) <br /> <br />21. Current population in the planning area. <br />The population of the planning area is 53,683 (Source: 2000 Census, total population <br />within census blocks inside the planning area.) <br /> <br />22. Current population residing it the 10~year flood plain in the planning area. <br />The total population affected by the 100-year floodplain is 17,052. (Source: GIS overlay <br />of floodplain to 2000 Census data). <br /> <br />23. Estimated value of property in the 10o-year flood plain in the planning area. <br />The estimated value of property in the 100-year floodplain is $157,591,695. This is <br />calculated by using a City of San Marcos GIS overlay analysis of stmctures inside the <br /> <br />M:lactive\04P012 San Marcos M.D.P1Grant Applic-SMa.doc 10 <br /> <br />December 16, 2004 <br /> <br />Exhibit A, Page 14 <br />