Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Hydrogeological Characterization and Statistical Analysis for Ogallala Aquifer in the Southern High Plains Region, USA

Version 1 : Received: 2 May 2022 / Approved: 5 May 2022 / Online: 5 May 2022 (16:13:04 CEST)

How to cite: Heo, J.; Haskel, D.; Dong, C. Hydrogeological Characterization and Statistical Analysis for Ogallala Aquifer in the Southern High Plains Region, USA. Preprints 2022, 2022050052 (doi: 10.20944/preprints202205.0052.v1). Heo, J.; Haskel, D.; Dong, C. Hydrogeological Characterization and Statistical Analysis for Ogallala Aquifer in the Southern High Plains Region, USA. Preprints 2022, 2022050052 (doi: 10.20944/preprints202205.0052.v1).

Abstract

The purposes of this study are to analyze the groundwater quality of Ogallala Aquifer and evaluate the hydrological characteristics in the southern High Plains region of the Permian Basin, Texas. Levels of chloride, fluoride, nitrate, pH, selenium, and total dissolved solids (TDS) were analyzed through the years 1990-2016. A total of 133 wells were collected from the Texas Water Development Board (TWDB) which is an open database by the US government. Statistical analysis was utilized to evaluate the groundwater quality and propose trends. The average levels of the contaminants were compared to their respective Maximum Contaminant Levels (MCL) by the Environmental Protection Agency (EPA). Potential human health risks that each contaminant possesses were described. Possible sources of each contaminant were discussed with oil/gas activities, agricultural practices, and other human actions impact its conditions. This research provides important information for groundwater quality of Ogallala aquifer and contributes on understanding the response to development in the Permian Basin, Texas.

Keywords

Ogallala aquifer; Groundwater quality; Statistical analysis; High plains region; Permian Basin; Texas

Subject

EARTH SCIENCES, Environmental Sciences

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