T126 Karst Hazards and Monitoring

Monday, 5 November 2018
1:30 PM - 5:30 PM
Room 130-131

A 3D PHOTO REAL EDUCATIONAL AND RESEARCH MODEL OF A RECHARGE FEATURE AND CAVE IN THE EDWARDS AQUIFER OF SOUTH CENTRAL TEXAS

Paper number: T126-13
Program: Technical Sessions
Time: 4:20 PM – 4:35 PM

Authors

Abstract

In 2017 and 2018, the Edwards Aquifer Authority (EAA) contracted with Benjy Von Cramon Productions to create a 3D photo real model of a large karst recharge feature located in Medina County, Texas. The purpose of the effort was to create a photographic model of the cave as an educational and research tool. Von Cramon Productions utilized a high resolution photogrammetric process and the EAA provided support logistics, cave access, and oversaw safety procedures. The entrance to the cave is through two vertical pitches, each of 25 meters in depth with approximately 400 meters of horizontal cave below the last pitch. In the early 1980’s, a trench from a nearby creek was constructed along with a low head dam to divert water into the feature to increase aquifer recharge. The trench activates during large rain events and will completely fill the cave with water within 10 minutes.

The three dimensional properties of the model allow the public to visualize the functioning of the Edwards Aquifer. The model will also be used to study karst processes and to assess sediment loading from recharge events allowing for better management of the aquifer. The model includes most of the vertical shaft and downstream portion of the cave. The model allows for close examination of the cave through the control of lighting and scale providing new insight into the formation of the cave.

Geological Society of America Abstracts with Programs. Vol. 50, No. 6

doi: 10.1130/abs/2018AM-324664

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