Flood Risk Areas in El Paso County, Texas

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Presentation transcript:

Flood Risk Areas in El Paso County, Texas By William Delgado

El Paso Average Annual Rainfall - 8.71 inches Source for El Paso Average Annual Rainfall: http://www.weather.gov/epz/elpaso_monthly_precip

2006 Flood A year’s worth of rain fell in 2 days Image Source of man and boy: http://usatoday30.usatoday.com/weather/stormcenter/2006-08-06-ElPaso-floods_x.htm Image Source of cars: http://www.elpasotimes.com/picture-gallery/archives/2016/07/28/archive-photos-flood-of-2006/87687140/ Source for rainfall figures: http://www.epwu.org/stormwater/stormwater_faq.html

Elevation Range: 1141 – 1616 meters Key Topographic Features: Franklin Mountains (long red patch) Rio Grande Depression (long dark green patch) DEM Source: http://earthexplorer.usgs.gov/

1% annual chance of flood 26% chance of flood over 30 year mortgage A areas 1% annual chance of flood 26% chance of flood over 30 year mortgage AE areas Base floodplain D areas Possible but undetermined flood risk areas Source of Flood Risk Areas: http://snmapmod.snco.us/fmm/document/fema-flood-zone-definitions.pdf

Source for 1992 NLCD Dataset: https://tnris

Source 2006 NLCD Dataset: http://www.mrlc.gov/nlcd06_data.php Source for 2011 NLCD Dataset: http://www.mrlc.gov/nlcd11_data.php

Source for Median Income by Census Block Group: 2010 US Census Data obtained for my final project in Prof. Miguel Pavon’s Spring 2016 Intro to GIS for Public Affairs Class

Remaining Objectives Explain FEMA flood zone criteria Verify legend of NLCD datasets Verify block group income field Find population living in flood risk areas

Questions?

References http://www.weather.gov/epz/elpaso_monthly_precip http://usatoday30.usatoday.com/weather/stormcenter/2006-08-06-ElPaso-floods_x.htm http://www.elpasotimes.com/picture-gallery/archives/2016/07/28/archive-photos-flood-of- 2006/87687140/ http://www.epwu.org/stormwater/stormwater_faq.html http://earthexplorer.usgs.gov/ http://snmapmod.snco.us/fmm/document/fema-flood-zone-definitions.pdf http://www.mrlc.gov/nlcd06_data.php https://tnris.org/data-catalog/entry/national-land-cover-database-1992/ http://www.mrlc.gov/nlcd01_data.php http://www.mrlc.gov/nlcd11_data.php 2010 US Census Data obtained for my final project in Prof. Miguel Pavon’s Spring 2016 Intro to GIS for Public Affairs Class