Publications
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Sand deposition in the Colorado River in the Grand Canyon from flooding of the Little Colorado River
Methods for computing the volume of sand deposited in the Colorado River in Grand Canyon National Park by floods in major tributaries and for determining redistribution of that sand by main-channel flows are required for successful management of sand-dependent riparian resources. We have derived flow, sediment transport, and bed evolution models based on a gridded topography developed from measure
Authors
S.M. Wiele, J.B. Graf, J.D. Smith
Ground-water, surface-water, and water-chemistry data, Black Mesa area, northeastern Arizona, 1995
No abstract available.
Authors
G. R. Littin, S. A. Monroe
Selected chemical characteristics and acute toxicity of urban stormwater, streamflow, and bed material, Maricopa County, Arizona
The chemistry and toxicity of urban stormwater, streamflow, and bed material in the Phoenix, Arizona, area were characterized to determine if urban stormwater could degrade the quality of streams. Toxic phases of stormwater (oil and grease, suspended solids, dissolved metals, and dissolved organics) were identified to aid water-quality managers minimize the sources of toxicants. Acute aquatic toxi
Authors
Thomas J. Lopes, Kenneth D. Fossum
Hydrogeology and deformation of sandbars in response to fluctuations in flow of the Colorado River in the Grand Canyon, Arizona
Rill erosion, slumping, and fissuring develop on seepage faces of many sandbars along the Colorado River in the Grand Canyon. These processes, observed at low river stage, are a response to residual head gradients in the sandbars caused by the river-stage fluctuation. Three sandbars were instrumented with sensors for continual monitoring of pore pressure and ground-water temperature within the san
Authors
M. C. Carpenter, R. L. Carruth, J.B. Fink, J.K. Boling, B.L. Cluer
Statistical summary of selected physical, chemical, and microbial characteristics, and estimates of constituent loads in urban stormwater, Maricopa County, Arizona
Stormwater and streamflow in the Phoenix, Arizona, area were monitored to determine the physical, chemical, and microbial characteristics of storm- water from areas having different land uses; to describe the characteristics of streamflow in a river that receives urban stormwater; and to estimate constituent loads in stormwater from unmonitored areas in Maricopa County, Arizona. Land use affects u
Authors
T. J. Lopes, K. D. Fossum, J. V. Phillips, J. E. Monical
Water-level fluctuations, water temperatures, and tilts in sandbars -6.5R, 43.1L, and 172.3L, Grand Canyon, Arizona, 1990-93
Rill erosion, slumping, and fissuring develop on seepage faces of many sandbars along the Colorado River in the Grand Canyon at low river stage. Three sandbars were instrumented with sensors for continual monitoring of stage, pore pressure, ground-water temperature, and tilt to determine the relation between ground-water flow and sandbar deformation. Data were collected from October 1990 to July 1
Authors
Michael C. Carpenter, Jason A. Crosswhite, R. L. Carruth
Monitoring Channel Sand Storage in the Colorado River in Grand Canyon
No abstract available.
Authors
Samuel M.D. Jansen, Julia B. Graf, Jonathan E. Marlow, Gregory G. Fisk
Measurements of aquifer-storage change and specific yield using gravity surveys
Pinal Creek is an intermittent stream that drains a 200-square-mile alluvial basin in central Arizona. Large changes in water levels and aquifer storage occur in an alluvial aquifer near the stream in response to periodic recharge and ground-water withdrawals. Outflow components of the ground-water budget and hydraulic properties of the alluvium are well-defined by field measurements; however, dat
Authors
D. R. Pool, J.H. Eychaner
Results of ground-water, surface-water, and water-chemistry monitoring, Black Mesa area, northeastern Arizona, 1994
The Black Mesa monitoring program is designed to document long-term effects of ground-water pumping from the N aquifer by industrial and municipal users. The N aquifer is the major source of water in the 5,400-square-mile Black Mesa area, and the ground water occurs under confined and unconfined conditions. Monitoring activities include continuous and periodic measurements of (1) ground-water pump
Authors
G. R. Littin, S. A. Monroe
Chemistry and toxicity of urban sediments, Maricopa County, Arizona, data and summary statistics
No abstract available.
Authors
T.L. Ingersoll, J. T. Parker, K. D. Fossum
Sand-storage changes in the Colorado River downstream from the Paria and Little Colorado Rivers, June 1992 to February 1994
No abstract available.
Authors
J.B. Graf, J. E. Marlow, G. G. Fisk, S.M. Jansen
Results of ground-water, surface-water, and water-quality monitoring, Black Mesa area, northeastern Arizona, 1992-93
No abstract available.
Authors
G. R. Littin, S. A. Monroe