Unified Interior Regions

Region 6: Arkansas-Rio Grande-Texas-Gulf

Regions L2 Landing Page Tabs

Filter Total Items: 1,576
Publication Thumbnail
Year Published: 2012

Simulated effects of hydrologic, water quality, and land-use changes of the Lake Maumelle watershed, Arkansas, 2004–10

Lake Maumelle, located in central Arkansas northwest of the cities of Little Rock and North Little Rock, is one of two principal drinking-water supplies for the Little Rock, and North Little Rock, Arkansas, metropolitan areas. Lake Maumelle and the Maumelle River (its primary tributary) are more pristine than most other reservoirs and streams in...

Hart, Rheannon M.; Green, W. Reed; Westerman, Drew A.; Petersen, James C.; DeLanois, Jeanne L.
Simulated effects of hydrologic, water quality, and land-use changes of the Lake Maumelle watershed, Arkansas, 2004–10; 2012; SIR; 2012-5246; Hart, Rheannon M.; Green, W. Reed; Westerman, Drew A.; Petersen, James C.; DeLanois, Jeanne L.

Publication Thumbnail
Year Published: 2012

Cancer risk from incidental ingestion exposures to PAHs associated with coal-tar-sealed pavement

Recent (2009-10) studies documented significantly higher concentrations of polycyclic aromatic hydrocarbons (PAHs) in settled house dust in living spaces and soil adjacent to parking lots sealed with coal-tar-based products. To date, no studies have examined the potential human health effects of PAHs from these products in dust and soil. Here we...

Williams, E. Spencer; Mahler, Barbara; Van Metre, Peter C.
Cancer risk from incidental ingestion exposures to PAHs associated with coal-tar-sealed pavement; 2012; Article; Journal; Environmental Science and Technology; Williams, E. Spencer; Mahler, Barbara J.; Van Metre, Peter C.

Publication Thumbnail
Year Published: 2012

Invertebrate and fish assemblage relations to dissolved Oxygen minima in lowland streams of southwestern Louisiana

Dissolved oxygen (DO) concentrations in lowland streams are naturally lower than those in upland streams; however, in some regions where monitoring data are lacking, DO criteria originally established for upland streams have been applied to lowland streams. This study investigated the DO concentrations at which fish and invertebrate assemblages...

Justus, B.G.; Mize, Scott V.; Kroes, Daniel; Wallace, James E.

Publication Thumbnail
Year Published: 2012

Grain-size distribution and selected major and trace element concentrations in bed-sediment cores from the Lower Granite Reservoir and Snake and Clearwater Rivers, eastern Washington and northern Idaho, 2010

Lower Granite Dam impounds the Snake and Clearwater Rivers in eastern Washington and northern Idaho, forming Lower Granite Reservoir. Since 1975, the U.S. Army Corps of Engineers has dredged sediment from the Lower Granite Reservoir and the Snake and Clearwater Rivers in eastern Washington and northern Idaho to keep navigation channels clear and...

Braun, Christopher L.; Wilson, Jennifer T.; Van Metre, Peter C.; Weakland, Rhonda J.; Fosness, Ryan L.; Williams, Marshall L.
Grain-size distribution and selected major and trace element concentrations in bed-sediment cores from the Lower Granite Reservoir and Snake and Clearwater Rivers, eastern Washington and northern Idaho, 2010; 2012; SIR; 2012-5219; Braun, Christopher L.; Wilson, Jennifer T.; Van Metre, Peter C.; Weakland, Rhonda J.; Fosness, Ryan L.; Williams, Marshall L.

Publication Thumbnail
Year Published: 2012

Investigation of land subsidence in the Houston-Galveston region of Texas by using the Global Positioning System and interferometric synthetic aperture radar, 1993-2000

Since the early 1900s, groundwater has been the primary source of municipal, industrial, and agricultural water supplies for the Houston-Galveston region, Texas. The region's combination of hydrogeology and nearly century-long use of groundwater has resulted in one of the largest areas of subsidence in the United States; by 1979, as much as 3...

Bawden, Gerald W.; Johnson, Michaela R.; Kasmarek, Mark C.; Brandt, Justin T.; Middleton, Clifton S.
Investigation of land subsidence in the Houston-Galveston region of Texas by using the Global Positioning System and interferometric synthetic aperture radar, 1993-2000; 2012; SIR; 2012-5211; Bawden, Gerald W.; Johnson, Michaela R.; Kasmarek, Mark C.; Brandt, Justin ; Middleton, Clifton S.

Publication Thumbnail
Year Published: 2012

Modelling ecological flow regime: an example from the Tennessee and Cumberland River basins

Predictive equations were developed for 19 ecologically relevant streamflow characteristics within five major groups of flow variables (magnitude, ratio, frequency, variability, and date) for use in the Tennessee and Cumberland River basins using stepbackward regression. Basin characteristics explain 50% or more of the variation for 12 of the 19...

Knight, Rodney R.; Gain, W. Scott; Wolfe, William J.
Modelling ecological flow regime: an example from the Tennessee and Cumberland River basins; 2012; Article; Journal; Ecohydrology; Knight, Rodney R.; Gain, W. Scott; Wolfe, William J.

Publication Thumbnail
Year Published: 2012

Changes in sources and storage in a karst aquifer during a transition from drought to wet conditions

Understanding the sources and processes that control groundwater compositions and the timing and magnitude of groundwater vulnerability to potential surface-water contamination under varying meteorologic conditions is critical to informing groundwater protection policies and practices. This is especially true in karst terrains, where infiltrating...

Wong, C.I.; Mahler, B.J.; Musgrove, M.; Banner, J.L.
Changes in sources and storage in a karst aquifer during a transition from drought to wet conditions; 2012; Article; Journal; Journal of Hydrology; Wong, C. I.; Mahler, B. J.; Musgrove, M. ; Banner, J. L.

Publication Thumbnail
Year Published: 2012

Estimation of evaporation from open water - A review of selected studies, summary of U.S. Army Corps of Engineers data collection and methods, and evaluation of two methods for estimation of evaporation from five reservoirs in Texas

Organizations responsible for the management of water resources, such as the U.S. Army Corps of Engineers (USACE), are tasked with estimation of evaporation for water-budgeting and planning purposes. The USACE has historically used Class A pan evaporation data (pan data) to estimate evaporation from reservoirs but many USACE Districts have been...

Harwell, Glenn R.
Estimation of evaporation from open water - A review of selected studies, summary of U.S. Army Corps of Engineers data collection and methods, and evaluation of two methods for estimation of evaporation from five reservoirs in Texas; 2012; SIR; 2012-5202; Harwell, Glenn R.

Publication Thumbnail
Year Published: 2012

Spatial and temporal trends in PCBs in sediment along the lower Rhone River, France

Despite increasingly strict control of polychlorinated biphenyl (PCB) releases in France since the mid-1970s, PCB contamination of fish recently has emerged as a major concern in the lower Rhone River basin. We measured PCB concentrations in Rhone sediment to evaluate the effects of PCB releases from major urban and industrial areas, sediment...

Desmet, Marc; Mourier, Brice; Mahler, Barbara; Van Metre, Peter C.; Roux, Gwenaelle; Persat, Henri; Lefevre, Irene; Peretti, Annie; Chapron, Emmanuel; Anaelle, Simonneau; Miege, Cecile; Babut, Marc
Spatial and temporal trends in PCBs in sediment along the lower Rhone River, France; 2012; Article; Journal; Science of the Total Environment; Desmet, Marc ; Mourier, Brice ; Mahler, Barbara J.; Van Metre, Peter C.; Roux, Gwenaelle ; Persat, Henri ; Lefevre, Irene ; Peretti, Annie ; Chapron, Emmanuel ; Anaelle, Simonneau ; Miege, Cecile ; Babut, Marc

Publication Thumbnail
Year Published: 2012

Water-level altitudes 2012 and water-level changes in the Chicot, Evangeline, and Jasper aquifers and compaction 1973-2011 in the Chicot and Evangeline aquifers, Houston-Galveston region, Texas

Most of the subsidence in the Houston–Galveston region, Texas, has occurred as a direct result of groundwater withdrawals for municipal supply, commercial and industrial use, and irrigation that depressured and dewatered the Chicot and Evangeline aquifers and caused compaction of the clay layers of the aquifer sediments. This report—...

Kasmarek, Mark C.; Johnson, Michaela R.; Ramage, Jason K.
Water-level altitudes 2012 and water-level changes in the Chicot, Evangeline, and Jasper aquifers and compaction 1973-2011 in the Chicot and Evangeline aquifers, Houston-Galveston region, Texas; 2012; SIM; 3230; Kasmarek, Mark C.; Johnson, Michaela R.; Ramage, Jason K.

Publication Thumbnail
Year Published: 2012

Analysis of trends in selected streamflow statistics for the Concho River Basin, Texas, 1916-2009

The Concho River Basin is part of the upper Colorado River Basin in west-central Texas. Monotonic trends in streamflow statistics during various time intervals from 1916-2009 were analyzed to determine whether substantial changes in selected streamflow statistics have occurred within the Concho River Basin. Two types of U.S. Geological Survey...

Barbie, Dana L.; Wehmeyer, Loren L.; May, Jayne E.
Analysis of trends in selected streamflow statistics for the Concho River Basin, Texas, 1916-2009; 2012; SIR; 2012-5193; Barbie, Dana L.; Wehmeyer, Loren L.; May, Jayne E.

Publication Thumbnail
Year Published: 2012

Streamflow gain and loss and water quality in the upper Nueces River Basin, south-central Texas, 2008-10

The U.S. Geological Survey-in cooperation with the U.S. Army Corps of Engineers, The Nature Conservancy, the Real Edwards Conservation and Reclamation District, and the Texas Parks and Wildlife Department-investigated streamflow gain and loss and water quality in the upper Nueces River Basin, south-central Texas, specifically in the watersheds of...

Banta, J. Ryan; Lambert, Rebecca B.; Slattery, Richard N.; Ockerman, Darwin J.
Streamflow gain and loss and water quality in the upper Nueces River Basin, south-central Texas, 2008-10; 2012; SIR; 2012-5181; Banta, J. Ryan; Lambert, Rebecca B.; Slattery, Richard N.; Ockerman, Darwin J.

Filter Total Items: 265
Image: Early USGS streamgage on the San Saba river in Texas

Early USGS streamgage on the San Saba river in Texas

An early streamgage is used to measure water levels on San Saba River. USGS crews would visit this equipment to collect water level readings.