Calhoun County Flooding and Insurance Maps

Calhoun County Flooding and Insurance Maps

Date

2-13-2024

Faculty Mentor

Sean Chenoweth, Chemistry and Geosciences; Ross Martin, Chemistry and Geosciences

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Submission Type

Conference Proceeding

Location

10:30-10:40am | Houston Cole Library, 11th Floor

Description

This study in Calhoun County analyzes the differences between the flood maps used by insurance companies and the Hydrology Flood Index Map, created to study flooding and hydrology issues on the Pinhoti and Chinnabee Silent Trails. The selected areas for this study in Calhoun County are Lenlock Lane in Saks, Coldwater Creek in Oxford, and Choccolocco Park in Oxford. They were chosen because of recurring flood issues or potential for flooding, as indicated by the FEMA and Hydrology Flood Index Maps. The FEMA Flood Maps primarily rely on reported or historical flooding and areas near water, such as lakes, streams, rivers, and creeks. The Hydrology Flood Index Map was created using multiple data layers to identify areas susceptible to flooding. The weighted sum of these layers was used to evaluate how much of a factor each layer can be in causing an area to retain water. Several data layers are essential when analyzing potential flood hazards and hydrology issues in the Hydrology Flood Index Map. The layers for analyzing flood hazards for the Hydrology Flood Index Map include the Soil Survey Geographic Database (SSURGO), National Land Cover Dataset (NLCD), Slope, and Flow Accumulation. SSURGO identifies soil types with poor drainage, NLCD shows the usage of the land, Slope provides terrain elevation, and Flow Accumulation identifies low-lying areas that could be bodies of water. The study compares FEMA Flood Maps to the Hydrology Flood Index Map to assess Calhoun County, Alabama flood hazards.

Keywords

student research, geography

Rights

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Disciplines

Hydrology

Calhoun County Flooding and Insurance Maps

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