Seasonal Changes in Groundwater Chemistry of the Edwards Aquifer

Alisha Martinez

Document Type

Conference Proceeding

Publication Date

2024

Abstract

The Comal Springs (CS) and San Marcos Springs (SMS) are the largest springs discharging the Edwards aquifer, which is a karst aquifer in south-central Texas. We collected physical and chemical samples during the wet and dry seasons, and the results showed that during the wetter days the pH for the SMS and CS were slightly lower than in the dryer days. The specific conductance (spc) for CS did not show any difference but the spc for SMS showed a slight decrease in concentration on dry days. The alkalinity concentration for CS increased while the SMS decreased from dry to wet days from. Overall, the results showed that aquifer dilution reduces the concentration of chemical constituents as exemplified in the conductivity concentration but increases the buffering capacity of the system as it showed higher alkalinity concentrations in wetter days in CS and just a slight decrease in SMS.

Comments

Studies in Biology
BLH 262

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