San Marcos Flooding EAGLE Project Manager Justine Williams Assistant Manager Joshua Bridges Web Master Alexander Nankervis GIS Analysts David Smith David Smith Clayton Holbrook

San Marcos Flood Analysis Introduction: San Marcos has a potential for flash flooding due to its unique geological aspects. Introduction: San Marcos has a potential for flash flooding due to its unique geological aspects. Scope: San Marcos City Limits Scope: San Marcos City Limits

San Marcos Flood Analysis Purpose: Identify low-water crossings, floodplains, potentially dangerous road segments, locations for new fire rescue stations, new shelter locations, and determine if there is any correlation between the Hispanic population and flood damages. Purpose: Identify low-water crossings, floodplains, potentially dangerous road segments, locations for new fire rescue stations, new shelter locations, and determine if there is any correlation between the Hispanic population and flood damages.

Literature Review October 1998 flood report October 1998 flood report –Four phases of the disasters Planning, Response, Recovery, Mitigation Planning, Response, Recovery, Mitigation –Damage assessment –Evacuation operations –Rescue Operations –Time-line –Rain gauge readings –San Marcos Road Improvement Plan

Data San Marcos DOQQs (Digital Ortho Quarter Quadrangles) and city limit San Marcos DOQQs (Digital Ortho Quarter Quadrangles) and city limit Census 2000 Hays County TIGER/Line data (census blocks, roads network) Census 2000 Hays County TIGER/Line data (census blocks, roads network) Census 2000 block group data Census 2000 block group data San Marcos 100 and 500 year floodplains, 1998 flood damage, neighborhoods, and Hays County streams San Marcos 100 and 500 year floodplains, 1998 flood damage, neighborhoods, and Hays County streams Low water crossings Low water crossings San Marcos schools, fire stations, hospital, and shelter locations San Marcos schools, fire stations, hospital, and shelter locations

Methodology Determine safe road areas Determine safe road areas Identify regions through network analysis Identify regions through network analysis Locate major intersections of roads and floodplain Locate major intersections of roads and floodplain Propose new fire service and shelter locations Propose new fire service and shelter locations Find correlation between Hispanic population and flood damage Find correlation between Hispanic population and flood damage

Final Deliverables Report Report Poster Poster Web Site Web Site CD CD