Selenium concentrations in the Colorado pikeminnow (Ptychocheilus lucius): Relationship with flows in the upper Colorado River
B. C. Osmundson, T.W. May, D.B. Osmundson
2000, Archives of Environmental Contamination and Toxicology (38) 479-485
A Department of the Interior (DOI) irrigation drainwater study of the Uncompahgre Project area and the Grand Valley in western Colorado revealed high selenium concentrations in water, sediment, and biota samples. The lower Gunnison River and the Colorado River in the study area are designated critical habitat for the endangered...
Middle- and late-Wisconsin paleobotanic and paleoclimatic records from the southern Colorado Plateau, USA
R. Scott Anderson, J.L. Betancourt, J.I. Mead, R.H. Hevly, D.P. Adam
2000, Conference Paper, Palaeogeography, Palaeoclimatology, Palaeoecology
The Colorado Plateau is a distinct physiographic province in western North America, which presently straddles the transition between summer-wet and summer-dry climatic regimes to the south and northwest, respectively. In addition to climate, the diversity of environments and plant communities on the Colorado Plateau has resulted from extreme topographic diversity....
Cyclic aggradation and downcutting, fluvial response to volcanic activity, and calibration of soil-carbonate stages in the western Grand Canyon, Arizona
Ivo Lucchitta, Garniss H. Curtis, Marie E. Davis, Sidney W. Davis, Brent Turrin
2000, Quaternary Research (53) 23-33
In the western Grand Canyon, fluvial terraces and pediment surfaces, both associated with a Pleistocene basalt flow, document Quaternary aggradation and downcutting by the Colorado River, illuminate the river's response to overload and the end of overload, and allow calibration of soil-carbonate stages and determination of downcutting rates. Four downcutting-aggradation...
Sources and haloacetic acid/trihalomethane formation potentials of aquatic humic substances in the Wakarusa River and Clinton Lake near Lawrence, Kansas
M.L. Pomes, C.K. Larive, E.M. Thurman, W. R. Green, W. H. Orem, C.E. Rostad, T.B. Coplen, B.J. Cutak, A.M. Dixon
2000, Environmental Science & Technology (34) 4278-4286
Gram quantities of aquatic humic substances (AHS) were extracted from the Wakarusa River−Clinton Lake Reservoir system, near Lawrence, KS, to support nuclear magnetic resonance (NMR) experimental studies, report concentrations of dissolved organic carbon (DOC) and AHS, define sources of the AHS, and determine if the AHS yield...
Methods for accurate estimation of net discharge in a tidal channel
M.R. Simpson, R. Bland
2000, IEEE Journal of Oceanic Engineering (25) 437-445
Accurate estimates of net residual discharge in tidally affected rivers and estuaries are possible because of recently developed ultrasonic discharge measurement techniques. Previous discharge estimates using conventional mechanical current meters and methods based on stage/discharge relations or water slope measurements often yielded errors that were as great as or greater...
Diet of first-feeding larval and young-of-the-year white sturgeon in the lower Columbia River
W.D. Muir, G.T. McCabe Jr., M.J. Parsley, S.A. Hinton
2000, Northwest Science (74) 25-33
In some Snake and Columbia River reservoirs, adult white sturgeon (Acipenser transmontanus) are common but few juvenile fish are found, indicating a lack of spawning success or poor survival of larvae. In contrast, recruitment of young-of-the-year white sturgeon to juvenile and adult stages is successful in the unimpounded Columbia River...
Population persistence in Florida torreya: Comparing modeled projections of a declining coniferous tree
Mark W. Schwartz, Sharon M. Hermann, Phillip J. van Mantgem
2000, Conservation Biology (14) 1023-1033
The Florida torreya ( Torreya taxifolia) is a coniferous tree endemic to a 35-km stretch of bluffs and ravines along the east side of the Apalachicola River in northern Florida and southern Georgia. This formerly locally abundant tree has declined as a result of disease during the 1950s and is on...
Decline in waste corn affecting spring staging habits of sandhill cranes in the central Platte River Valley, Nebraska
Gary L. Krapu, D.A. Brandt
David D. Dolton, editor(s)
2000, Conference Paper, Webless Migratory Game Bird Research Program: Project Abstracts 1999
Exposure of delta smelt to dissolved pesticides in 1998 and 1999
G. Edward Moon, Kathryn Kuivila, Catherine A. Ruhl, David H. Schoellhamer
2000, Interagency Ecological Program Newsletter (13) 27-33
Delta smelt is a threatened species in the San Francisco Bay Estuary. Pesticide toxicity is a possible cause for the need to list this fish (Bennett and Moyle 1996; Moyle and others 1996). Numerous pesticides are transported into the estuary from area rivers (MacCoy and others 1995). However, there are...
Offshore-onshore correlation of upper Pleistocene strata, New Jersey Coastal Plain to continental shelf and slope
R. E. Sheridan, G.M. Ashley, K.G. Miller, J.S. Waldner, D. W. Hall, J. Uptegrove
2000, Conference Paper, Sedimentary Geology
High-resolution seismic reflection profiles (~ 1-5 m resolution), including Geopulse(TM), Uniboom(TM), minisparker, small air gun, and water gun sources, are used to trace the ?? 18O stage 5 portion of the outcropping Cape May Formation across the shelf to the continental slope. The ?? 18O stage 5/6 boundary identified at...
The effects of dissolved gas supersaturation on white sturgeon larvae
T.D. Counihan, Allen I. Miller, M.G. Mesa, M.J. Parsley
2000, Transactions of the American Fisheries Society (127) 316-322
Spill at dams has caused supersaturation of atmospheric gas in waters of the Columbia and Snake rivers and raised concerns about the effects of dissolved gas supersaturation (DGS) on white sturgeons Acipenser transmontanus. The timing and location of white sturgeon spawning and the dispersal of white sturgeon larvae from incubation...
Water resources data Texas, water year 1999, volume 5. Guadalupe River basin, Nueces River basin, Rio Grande basin, and intervening coastal basins
S. C. Gandara, W.J. Gibbons, D.L. Barbie, R. E. Jones
2000, Water Data Report TX-99-5
Water-resources data for the 1999 water year for Texas are presented in six volumes, and consist of records of stage, discharge, and water quality of streams and canals; stage, contents, and water-quality of lakes and reservoirs; and water levels and water quality of ground-water wells. Volume 5 contains records for...
Water resources data Texas, water year 1999, volume 4. Colorado River basin, Lavaca River basin, and intervening coastal basins
S. C. Gandara, W.J. Gibbons, D.L. Barbie, R. E. Jones
2000, Water Data Report TX-99-4
Water-resources data for the 1999 water year for Texas are presented in six volumes, and consist of records of stage, discharge, and water quality of streams and canals; stage, contents, and water-quality of lakes and reservoirs; and water levels and water quality of ground-water wells. Volume 4 contains records for...
Water resources data Texas, water year 1999, volume 3. San Jacinto River basin, Brazos River basin, San Bernard River basin, and intervening coastal basins
S. C. Gandara, W.J. Gibbons, D.L. Barbie, R. E. Jones
2000, Water Data Report TX-99-3
Water-resources data for the 1999 water year for Texas are presented in six volumes, and consist of records of stage, discharge, and water quality of streams and canals; stage, contents, and water quality of lakes and reservoirs; and water levels and water quality of ground-water wells. Volume 3 contains records...
Water resources data Texas, water year 1999, volume 2. Trinity River basin
S. C. Gandara, W.J. Gibbons, D.L. Barbie, R. E. Jones
2000, Water Data Report TX-99-2
Water-resources data for the 1999 water year for Texas are presented in six volumes, and consist of records of stage, discharge, and water quality of streams and canals; stage, contents, and water-quality of lakes and reservoirs; and water levels and water quality of ground-water wells. Volume 2 contains records for...
Water Resources Data, Pennsylvania, Water Year 1999. Volume 1. Delaware River Basin
R.R. Durlin, W.P. Schaffstall
2000, Water Data Report PA-99-1
IntroductionThe Water Resources Division of the U.S. Geological Survey, in cooperation with State, municipal, and Federal agencies, collects a large amount of data pertaining to the water resources of Pennsylvania each water year. These data, accumulated during many water years, constitute a valuable data base for developing an improved understanding...
Water Resources Data, Pennsylvania, Water Year 1999. Volume 2. Susquehanna and Potomac River Basins
R.R. Durlin, W.P. Schaffstall
2000, Water Data Report PA-99-2
IntroductionThe Water Resources Division of the U.S. Geological Survey, in cooperation with State, municipal, and Federal agencies, collects a large amount of data pertaining to the water resources of Pennsylvania each water year. These data, accumulated during many water years, constitute a valuable data base for developing an improved understanding...
Water resources data, Iowa, water year 1999, volume 1. surface water--Mississippi River basin
G.M. Nalley, J.G. Gorman, R.D. Goodrich, V.E. Miller, M.J. Turco, S. M. Linhart
2000, Water Data Report IA-99-1
Water resources data for water year 1999 for Iowa consists of records of stage, discharge, and water quality of streams; stage and contents of lakes and reservoirs; and water levels and water quality of ground water. This report, in two volumes, contains stage or discharge records for 123 gaging stations;...
Water Resources Data, New Mexico, Water Year 1999. Volume 2. The Arkansas River Basin; the San Juan River Basin; the Gila River Basin; and Ground-Water Wells
David Ortiz, Kathy M. Lange, Linda Beal
2000, Water Data Report NM-99-2
Water-resources data for the 1999 water year for New Mexico consist of discharge and and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and water levels and water quality in wells and springs. This report contains discharge records for 168 gaging stations; stage and contents...
Water Resources Data, Pennsylvania, Water Year 1999. Volume 3. Ohio and St. Lawrence River Basins
R.W. Siwicki
2000, Water Data Report PA-99-3
The Water Resources Division of the U.S. Geological Survey, in cooperation with State, municipal, and Federal agencies, collects a large amount of data pertaining to the water resources of Pennsylvania each water year. These data, accumulated during many water years, constitute a valuable data base for developing an improved understanding...
Water resources data, Iowa, water year 1999, volume 2. surface water--Missouri River basin, and ground water
G.M. Nalley, J.G. Gorman, R.D. Goodrich, V.E. Miller, M.J. Turco, S. M. Linhart
2000, Water Data Report IA-99-2
Water resources data for water year 1999 for Iowa consists of records of stage, discharge, and water quality of streams; stage and contents of lakes and reservoirs; and water levels and water quality of ground water. This report, in two volumes, contains stage or discharge records for 123 gaging stations;...
Water Resources Data, New Mexico, Water Year 1999. Volume 1. The Rio Grande Basin; the Mimbres River Basin; and the Tularosa Valley Basin
David Ortiz, Kathy Lange, Linda Beal
2000, Water Data Report NM-99-1
Water-resources data for the 1999 water year for New Mexico consist of discharge and and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and water levels and water quality in wells and springs. This report contains discharge records for 168 gaging stations; stage and contents...
Water Resources Data, Colorado, Water Year 1999--Volume 1. Missouri River Basin, Arkansas River Basin, and Rio Grande Basin
R.M. Crowfoot, J.W. Unruh, G.F. Ritz, R.D. Steger, G. B. O’Neill
2000, Water Data Report CO-99-1
Water-resources data for Colorado for the 1999 water year consist of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and water levels and water quality of wells and springs. This report (Volumes 1 and 2) contains discharge records for 306...
Water Resources Data, Colorado, Water Year 1999--Volume 2. Colorado River Basin
R.M. Crowfoot, J.W. Unruh, G.F. Ritz, R.W. Boulger, G. B. O’Neill
2000, Water Data Report CO-99-2
Water-resources data for Colorado for the 1999 water year consist of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and water levels and water quality of wells and springs. This report (Volumes 1 and 2) contains discharge records for 306...
Water Resources Data, Georgia, 2000, Volume 1: Continuous water-level, streamflow, water-quality data, and periodic water-quality data, Water Year 2000
Brian E. McCallum, Andrew C. Hickey
2000, Water Data Report GA-00-1
Water resources data for the 2000 water year for Georgia consists of records of stage, discharge, and water quality of streams; and the stage and contents of lakes and reservoirs published in one volume in a digital format on a CD-ROM. This volume contains discharge records of 125 gaging stations;...
