Publications
This list of Water Resources Mission Area publications includes both official USGS publications and journal articles authored by our scientists. A searchable database of all USGS publications can be accessed at the USGS Publications Warehouse.
Filter Total Items: 18464
Unnatural isotopic composition of lithium reagents
Isotopic analysis of 39 lithium reagents from several manufacturers indicates that seven were artificially depleted in 6Li significantly in excess of the variation found in terrestrial materials. The atomic weight of lithium in analyzed reagents ranged from 6.939 to 6.996, and δ7Li, reported relative to L-SVEC lithium carbonate, ranged from −11 to +3013‰. This investigation indicates that 6Li-depl
Authors
H. P. Qi, Tyler B. Coplen, Q. Zh Wang, Y. -H. Wang
Molecular markers and environmental organic geochemistry: An overview
No abstract available.
Authors
Robert P. Eganhouse
Methods for predicting peak discharge of floods caused by failure of natural and constructed earthen dams
Floods from failures of natural and constructed dams constitute a widespread hazard to people and property. Expeditious means of assessing flood hazards are necessary, particularly in the case of natural dams, which may form suddenly and unexpectedly. We revise statistical relations (derived from data for past constructed and natural dam failures) between peak discharge (Qp) and water volume relea
Authors
Joseph S. Walder, Jim E. O'Connor
Predicting the probability of elevated nitrate concentrations in the Puget Sound Basin: Implications for aquifer susceptibility and vulnerability
The occurrence and distribution of elevated nitrate concentrations (≥ 3 mg/l) in ground water in the Puget Sound Basin, Washington, were determined by examining existing data from more than 3000 wells. Models that estimate the probability that a well has an elevated nitrate concentration were constructed by relating the occurrence of elevated nitrate concentrations to both natural and anthropogeni
Authors
A. J. Tesoriero, F.D. Voss
Hydraulic modeling for lahar hazards at cascades volcanoes
The National Weather Service flood routing model DAMBRK is able to closely replicate field-documented stages of historic and prehistoric lahars from Mt. Rainier, Washington, and Mt. Hood, Oregon. Modeled time-of-travel of flow waves are generally consistent with documented lahar travel-times from other volcanoes around the world. The model adequately replicates a range of lahars and debris flows,
Authors
J. E. Costa
Predicting landslide vegetation in patches on landscape gradients in Puerto Rico
We explored the predictive value of common landscape characteristics for landslide vegetative stages in the Luquillo Experimental Forest of Puerto Rico using four different analyses. Maximum likelihood logistic regression showed that aspect, age, and substrate type could be used to predict vegetative structural stage. In addition it showed that the structural complexity of the vegetation was great
Authors
R.W. Myster, J.R. Thomlinson, M. C. Larsen
Error evaluation of methyl bromide aerodynamic flux measurements
Methyl bromide volatilization fluxes were calculated for a tarped and a nontarped field using 2 and 4 hour sampling periods. These field measurements were averaged in 8, 12, and 24 hour increments to simulate longer sampling periods. The daily flux profiles were progressively smoothed and the cumulative volatility losses increased by 20 to 30% with each longer sampling period. Error associated wit
Authors
Michael S. Majewski
Strontium isotopic geochemistry of the Devils Lake drainage system, North Dakota: A preliminary study and potential paleoclimatic implications
A series of water samples (precipitation, surface water and ground water) from the Devils Lake drainage basin in central North Dakota have been analyzed for their ??180 and ??D and 87Sr/86Sr. The ??180 and ??D of snow and most ground water samples fall near the meteoric water line, with the ground water being isotopically heavier than the snow, indicating that a portion of the recharge must come f
Authors
R.M. Lent, H.E. Gaudette, W.B. Lyons
Invading species in the Eel River, California: Successes, failures, and relationships with resident species
We examined invasions of non-native fishes into the Eel River, California. At least 16 species of fish have been introduced into the drainage which originally supported 12-14 fish species. Our study was prompted by the unauthorized introduction in 1979 of Sacramento squawfish, Ptychocheilus grandis, a large predatory cyprinid. From 1986 to 1990, we conducted growth and diet studies of squaw fish,
Authors
L. R. Brown, P.B. Moyle
Dynamics of water-table fluctuations in an upland between two prairie-pothole wetlands in North Dakota
Data from a string of instrumented wells located on an upland of 55 m width between two wetlands in central North Dakota, USA, indicated frequent changes in water-table configuration following wet and dry periods during 5 years of investigation. A seasonal wetland is situated about 1.5 m higher than a nearby semipermanent wetland, suggesting an average ground water-table gradient of 0.02. However,
Authors
Donald O. Rosenberry, Thomas C. Winter
Hydrogeologic framework of western Cape Cod, Massachusetts
The aquifer of western Cape Cod consists of several hydrogeologic units composed of sand, gravel, silt, and clay (fig. 1) that were deposited during the late Wisconsinan glaciation of New England. The aquifer is a shallow, unconfined hydrologic system in which ground-water flows radially outward from the apex of the ground-water mound near the center of the peninsula toward the coast (fig.2). The
Authors
John P. Masterson, Byron D. Stone, Donald A. Walter, Jennifer G. Savoie
Ground Water Atlas of the United States: Segment 3, Kansas, Missouri, Nebraska
The three States-Kansas, Missouri, and Nebraska-that comprise Segment 3 of this Atlas are in the central part of the United States. The major rivers that drain these States are the Niobrara, the Platte, the Kansas, the Arkansas, and the Missouri; the Mississippi River is the eastern boundary of the area. These rivers supply water for many uses but ground water is the source of slightly more than o
Authors
James A. Miller, Cynthia L. Appel