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The Blanco Gardens north sidestorm sewer system drains Bugg Lane <br />: <br />Low Moderate Income <br />The Blanco Gardensarea is influenced by the Blanco River overflows.The <br /> <br /> The project benefit will reduce the risk for flooding to the Blanco Gardens neighborhood <br />Existing Infrastructure:and River Road with a dual 48-inch outfall to the Blanco River. TheBlanco Gardens south side system drains to an outfall on the San Marcos River.The current storm <br /> water infrastructure is not adequate to address drainage issues from local rain events and will be upgraded with two other CDBG-DR projects.Drainage issues:Blanco Gardens and Clarewood/Barbara <br /> Drive projects will upgrade the storm sewer system to providecapacity for local storm events. However,the infrastructure which would be required to convey the overflow from the Blanco <br /> River would be too large to construct within the existing neighborhood.Proposed Infrastructure This projectwill makebank improvements to block low bank areas in the Blanco River overbankwhich <br /> allow the overflow to occur. With the improvements, the Blanco Gardens area can gain protection from approximately 3-4 feet of river rise. The bank improvements wouldhave the purpose <br /> of setting maximum grade limitations, minimum widths and surface. It is possible that the improvements could also provide a dual purpose of a greenway if desired by the community.The <br /> blockage of diversion flow will cause a minor rise inwater surface elevation. To address this minor rise, this project will also include flow capacity improvements to the Blanco River. <br /> These capacity improvements could include modifications to the channel and/or an overflow channel on the opposite bank.Benefits:by 44% annually by reducing the level of floods from <br /> overtopping the bank from a 20-yr or higher floods to a 36-yr or higher. And during higher floodsthe flow and depth of water will be reduced. The graphic below illustrates the additional <br /> protection based upon previous flood events. National Objective: <br /> <br />