Long term (1960–2010) trends in groundwater contamination and salinization in the Ogallala aquifer in Texas

Chaudhuri, Sriroop; Ale, Srinivasulu

doi:10.1016/j.jhydrol.2014.03.033

Cited by 99 publications

(64 citation statements)

References 55 publications

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“…Typically, groundwater salinity increases with depth (16). Fresh groundwater resources occurring at relatively shallow depths ( 1,000 m) have been studied extensively in terms of groundwater availability (17)(18)(19)(20)(21)(22) and quality (23)(24)(25)(26). In California, water quality data from over 200,000 groundwater wells are available from the State Water Resources Control Board Groundwater Ambient Monitoring and Assessment Program (27).…”

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confidence: 99%

Salinity of deep groundwater in California: Water quantity, quality, and protection

Kang

Jackson

2016

Proc. Natl. Acad. Sci. U.S.A.

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Deep groundwater aquifers are poorly characterized but could yield important sources of water in California and elsewhere. Deep aquifers have been developed for oil and gas extraction, and this activity has created both valuable data and risks to groundwater quality. Assessing groundwater quantity and quality requires baseline data and a monitoring framework for evaluating impacts. We analyze 938 chemical, geological, and depth data points from 360 oil/gas fields across eight counties in California and depth data from 34,392 oil and gas wells. By expanding previous groundwater volume estimates from depths of 305 m to 3,000 m in California’s Central Valley, an important agricultural region with growing groundwater demands, fresh [<3,000 ppm total dissolved solids (TDS)] groundwater volume is almost tripled to 2,700 km3, most of it found shallower than 1,000 m. The 3,000-m depth zone also provides 3,900 km3 of fresh and saline water, not previously estimated, that can be categorized as underground sources of drinking water (USDWs; <10,000 ppm TDS). Up to 19% and 35% of oil/gas activities have occurred directly in freshwater zones and USDWs, respectively, in the eight counties. Deeper activities, such as wastewater injection, may also pose a potential threat to groundwater, especially USDWs. Our findings indicate that California’s Central Valley alone has close to three times the volume of fresh groundwater and four times the volume of USDWs than previous estimates suggest. Therefore, efforts to monitor and protect deeper, saline groundwater resources are needed in California and beyond.

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confidence: 99%

Salinity of deep groundwater in California: Water quantity, quality, and protection

Kang

Jackson

2016

Proc. Natl. Acad. Sci. U.S.A.

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“…In addition, different geochemical ratios are used to identify the potential mechanisms that influence the overall geochemical composition of groundwater [12,13,15,39,40]. For example, the (Ca…”

Section: Data Analysis Methodsmentioning

confidence: 99%

“…TDS is a manifestation of several dissolved constituents and considered a measure of salinity and an overall indicator of water quality, relating to taste and palatability [15,22]. In shallow groundwater, the concentration of TDS increases notably from 1689.…”

Section: Spatial-temporal Distribution Of Tds In Shallow and Deep Gromentioning

confidence: 99%

“…Groundwater availability and quality has become the source of concern for researchers worldwide. Most studies of these issues focused on the saltwater intrusion [5,11], groundwater salinization [12][13][14][15], arsenic and other heavy metals in groundwater [16][17][18][19], the sustainability of aquifer exploitation [20] and groundwater quality evaluation [21]. The stability and safety of water supply associated with long-term groundwater exploitation are essential to sustainable development.…”

Section: Introductionmentioning

confidence: 99%

“…Ravenscroft [4] conducted an investigation of deep groundwater quality in a system subjected to abstraction for more than 20 years in Southern Bangladesh and found no evidence of deteriorating water quality. However, the results of studies of the Ogallala aquifer in Texas [15,22] indicated that remarkable groundwater quality deterioration associated with persistent groundwater exploitation was ongoing since the 1960s. The North China Plain (NCP) is one of global hotspots of groundwater depletion [23][24][25]; in addition of a shortage of groundwater resource, deterioration of groundwater quality should be of great concern, too.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of Long-Term Evolution of Groundwater Hydrochemical Characteristics Using Multiple Approaches: A Case Study in Cangzhou, Northern China

Wang

Liu³

et al. 2015

Water

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Water shortage is severe in the North China Plain (NCP). In addition to a deficiency of water resources, deterioration of groundwater quality should be of great concern. In this study, hydrogeological analysis was conducted in combination with principal component analysis, correlation analysis and the co-kriging method to identify factors controlling the content of major ions and total dissolved solids (TDS) in areal shallow and deep groundwater and to assess groundwater evolution in Cangzhou, China. The results suggested that groundwater quality degradation occurred and developed in the study area, as indicated by increasing concentrations of major ions, TDS and hardness in both shallow and deep groundwater. In shallow groundwater, whose hydrochemical water types changed from HCO3-Ca.Na.Mg and HCO3.Cl-Na in the west (Zone II) to Cl.SO4-Na and Cl-Na in the east (Zone III). Areas with TDS concentrations between 1500 and 2000 mg/L occupied 79.76% of the total in the 1980s, while areas with a TDS concentration ranging from 2500 to 3000 mg/L comprised 59.11% of the total in the 2010s. In deep groundwater, the area with TDS over 1000 mg/L expanded from 5366.39 km groundwater. Dissolution of dolomite, calcite, feldspar and gypsum were the primary sources of major ions in groundwater, and the ion exchange reaction had a strong effect on the cation content, especially for deep groundwater.

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Carbon sequestration and water management in Texas—One size does not fit all

Bell

DeLaune²,

Fischer

et al. 2023

Agrosystems Geosci & Env

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Climate‐smart agriculture (CSA) is an integrated approach to sustainably meeting food, fiber, and feed production needs. The technical and socioeconomic feasibility of different CSA strategies depends on local conditions, and there is no one‐size‐fits‐all approach. Here, we review two key aspects of CSA with a focus on Texas: soil C sequestration and water management. Carbon sequestration potential is highly variable across Texas as it depends on local biophysical conditions and soil management practices in place, for example, tillage and cover crops. Grasslands also have an important role to play in C sequestration. Important co‐benefits of effective soil management for C sequestration, such as reduced CO2 emissions, enhanced soil structure, and increased microbial activity, can positively impact soil fertility and productivity. The economic and political realities of C sequestration will have a strong influence on the implementation of technically feasible strategies. The major challenge for water management is the sustainable allocation of increasingly scarce resources. Expanded irrigation is a short‐term solution, but in many cases, the existing water supply is insufficient to meet future demand. A drying Texas, and aquifer depletion, portends lower future supplies. The Panhandle, Llano Estacado, and Rio Grande regions have the greatest projected gaps between future supply and demand. Increasing water‐use efficiency and using drought‐tolerant crops are important management goals and precision agriculture with site‐specific management measures could help improve drought resiliency. Texas’ geographic diversity is reflected in the variety of agricultural commodities produced by the state, and CSA activities are likely to be equally diverse.

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Long term (1960–2010) trends in groundwater contamination and salinization in the Ogallala aquifer in Texas

Cited by 99 publications

References 55 publications

Salinity of deep groundwater in California: Water quantity, quality, and protection

Salinity of deep groundwater in California: Water quantity, quality, and protection

Assessment of Long-Term Evolution of Groundwater Hydrochemical Characteristics Using Multiple Approaches: A Case Study in Cangzhou, Northern China

Carbon sequestration and water management in Texas—One size does not fit all

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