Ground Water Atlas of the United States: Segment 4, Oklahoma, Texas

Ryder, Paul D.

doi:10.3133/ha730e

Cited by 8 publications

(12 citation statements)

References 4 publications

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“…The Edwards-Trinity aquifer system is composed of three aquifers of Cretaceous-age carbonate and clastic rocks, which are described in detail by Ryder (1996) and George and others (2011) and summarized here: from west to east, the aquifers are the Edwards-Trinity aquifer, the Edwards aquifer, and the Trinity aquifer. The Edwards aquifer overlies and is in part hydraulically connected to the Trinity aquifer, whereas the Trinity and Edwards-Trinity aquifers are stratigraphically equivalent in part and are hydraulically connected in places (Ryder, 1996). The climate of the region is highly variable with mean annual precipitation decreasing from east to west by an order of magnitude.…”

Section: Edwards-trinity Aquifer System Principal Aquifer Study Netwomentioning

confidence: 99%

“…The stream-valley aquifers are associated with the sand and gravel deposits in the valleys of the stream or river that typically is hydraulically connected to the aquifers (Miller and Appel, 1997); consequently, these aquifers usually are only as much as a few miles wide but can extend over long distances (Ryder, 1996). These aquifers typically are no more than 100 ft thick, but along some of the large rivers may be as much as 160 ft thick (Miller and Appel, 1997).…”

Section: Stream-valley Aquifers Principal Aquifer Study Network 1 (Stmentioning

confidence: 99%

“…The groundwater in these aquifers usually is unconfined or under water-table conditions; however, locally, where coarse-grained sediments are overlain by low permeable silt or clay, confined conditions may exist (Miller and Appel, 1997). Recharge to the aquifer is from infiltration of precipitation and drainage of surface water from the streams and rivers adjacent to these aquifers (Ryder, 1996;Miller and Appel, 1997).…”

Section: Stream-valley Aquifers Principal Aquifer Study Network 1 (Stmentioning

confidence: 99%

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Groundwater-quality and select quality-control data from the National Water-Quality Assessment Project, January 2017 through December 2019

Kingsbury¹,

Bexfield²,

Arnold³

et al. 2021

Data Series

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Sustaining the quality of the Nation's water resources and the health of our diverse ecosystems depends on the availability of sound water-resources data and information to develop effective, science-based policies. Effective management of water resources also brings more certainty and efficiency to important economic sectors. Taken together, these actions lead to immediate and long-term economic, social, and environmental benefits that make a difference to the lives of the almost 400 million people projected to live in the United States by 2050.In 1991, Congress established the National Water-Quality Assessment (NAWQA) Project to address where, when, why, and how the Nation's water quality has changed, or is likely to change in the future, in response to human activities and natural factors. Since then, NAWQA has been a leading source of scientific data and knowledge used by national, regional, State, and local agencies to develop science-based policies and management strategies to improve and protect water resources used for drinking water, recreation, irrigation, energy development, and ecosystem needs (htt ps://water .usgs.gov/ nawqa/ applications/ ). Plans for the third decade of NAWQA (2013-23) address priority water-quality issues and science needs identified by NAWQA stakeholders, such as the Advisory Committee on Water Information and the National Research Council, and are designed to meet increasing challenges related to population growth, increasing needs for clean water, and changing land-use and weather patterns.NAWQA is assessing the quality of groundwater used for public and domestic drinking-water supply. NAWQA obtains samples from public-supply wells, domestic wells, and shallow monitoring wells and analyzes those samples for a large number of chemical constituents. These data are used to assess the suitability of the resource for human consumption, as well as to evaluate changes in groundwater quality over a variety of time scales. Groundwater quality also is assessed at multiple scales: locally, regionally, and nationally. Groundwater-quality data collected by the NAWQA Project during each year are published in annual data series reports. This report, the fifth in the series, combines groundwater-quality data collected at 983 sites to provide a summary of groundwater quality in selected aquifers across the Nation during the sampling period. All NAWQA reports are available online at htt ps://water .usgs.gov/ nawqa/ bib/ .We hope this publication will provide you with insights and information to meet your waterresource needs and will foster increased citizen awareness and involvement in the protection and restoration of our Nation's waters. The information in this report is intended primarily for those interested or involved in resource management and protection, conservation, regulation, and policymaking at the regional and national levels.

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Section: Edwards-trinity Aquifer System Principal Aquifer Study Netwomentioning

confidence: 99%

Section: Stream-valley Aquifers Principal Aquifer Study Network 1 (Stmentioning

confidence: 99%

Section: Stream-valley Aquifers Principal Aquifer Study Network 1 (Stmentioning

confidence: 99%

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Groundwater-quality and select quality-control data from the National Water-Quality Assessment Project, January 2017 through December 2019

Kingsbury¹,

Bexfield²,

Arnold³

et al. 2021

Data Series

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“…The study area is in the Great Plains physiographic province (fig. 1) and consists of an elevated and relatively undissected plain (Ryder, 1996). The study area covers about 3,225 mi 2 , including 1,525 mi 2 in LEUWCD, 798 mi 2 in SLUWCD, and 902 mi 2 in SPUWCD (fig.…”

Section: Description Of Study Areamentioning

confidence: 99%

“…The combination of minimal topographic relief, availability of groundwater for irrigation, and excellent soils makes this an important agricultural region in Texas (Ryder, 1996). From the USGS National Land Cover Database (NLCD) 2011, the land-cover categories for rangeland (shrubs/scrubs [31 percent] and grassland/herbaceous [19 percent]) and for cultivated crops (42 percent) dominate in the study area (fig.…”

Section: Description Of Study Areamentioning

confidence: 99%

Hydrogeologic framework, geochemistry, groundwater-flow system, and aquifer hydraulic properties used in the development of a conceptual model of the Ogallala, Edwards-Trinity (High Plains), and Dockum aquifers in and near Gaines, Terry, and Yoakum Counties, Texas

Teeple¹,

Ging²,

Thomas³

et al. 2021

Scientific Investigations Report

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Risk‐Based Decision‐Support Groundwater Modeling for the Lower San Antonio River Basin, Texas, USA

Foster¹,

White

Leaf

et al. 2021

Groundwater

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A numerical surface-water/groundwater model was developed for the lower San Antonio River Basin to evaluate the responses of low base flows and groundwater levels within the basin under conditions of reduced recharge and increased groundwater withdrawals. Batch data assimilation through history matching used a simulation of historical conditions (2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013); this process included history-matching to groundwater levels and base-flow estimates at several gages, and was completed in a high-dimensional (highly parameterized) framework. The model was developed in an uncertainty framework such that parameters, observations, and scenarios of interest are envisioned stochastically as distributions of potential values. Results indicate that groundwater contributions to surface water during periods of low flow may be reduced from 6% to 25% with a corresponding 25% reduction in recharge and a 25% increase in groundwater pumping over an 8-year planning period. Furthermore, results indicate groundwater-level reductions in some hydrostratigraphic units are more likely than in other hydrostratigraphic units over an 8-year period under drought conditions with the higher groundwater withdrawal scenario.

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Ground Water Atlas of the United States: Segment 4, Oklahoma, Texas

Cited by 8 publications

References 4 publications

Groundwater-quality and select quality-control data from the National Water-Quality Assessment Project, January 2017 through December 2019

Groundwater-quality and select quality-control data from the National Water-Quality Assessment Project, January 2017 through December 2019

Hydrogeologic framework, geochemistry, groundwater-flow system, and aquifer hydraulic properties used in the development of a conceptual model of the Ogallala, Edwards-Trinity (High Plains), and Dockum aquifers in and near Gaines, Terry, and Yoakum Counties, Texas

Risk‐Based Decision‐Support Groundwater Modeling for the Lower San Antonio River Basin, Texas, USA

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