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: 18422
Field trip guide - American Water Resources Association
No abstract available.
Authors
Matthew C. Larsen, Thalia D. Veve
Development of an aquifer management model AQMAN3D
A computer code that enables the use of the USGS Modular groundwater flow model for aquifermanagement modeling has been developed. Aquifermanagement techniques integrate groundwater flow modeling with linear quadratic optimization methods for the solution of various aquifer management problems. The model AQMAN3D, is a modified version of a previously developed two-dimensional AQMAN model. The idea
Authors
Juan Carlos Puig, L. I. Rolon-Collazo, Ishmael Pagan-Trinidad
Landslide processes in saprolitic soils of a tropical rain forest, Puerto Rico
Shallow soil slips, earth and debris slides appear to be a primary mechanism of hillslope denudation in the rainforest of eastern Puerto Rico. Annual rainfall in excess of 4,000 mm, and thick sequences (up to 20 m) of residual soils (saprolite) combine to produce these landslides. Shear strength testing and observatons of tension cracks indicate that landslides may start as tensile failure of sapr
Authors
Matthew C. Larsen, Andrew Simon
Rainfall-soil moisture relations in landslide-prone areas of a tropical rain forest, Puerto Rico
Soil moisture conditions are not well documented in steep, tropical landslide-prone terrain. In the 11,330 ha Caribbean National Forest (CNF) in northeastern Puerto Rico more than 170 landslides that occurred from one to approximately 60 years ago have been mapped. Most of these landslides are shallow, with failure depths of 0.5 ot 7 m, and are associated with periods of intense, prolonged rainfal
Authors
Matthew C. Larsen, Angel J. Torres-Sanchez
Hydrochemistry of the South Coastal Plain Aquifer System of Puerto Rico and its relation to surface-water recharge
No abstract available.
Authors
Fernando Gomez-Gomez
A computer program for GEOphysical log data MANagement and plotting (GEOMAN)
No abstract available.
Authors
I. E. Arroyo, Sigfredo Torres-Gonzalez, Ramon A. Carrasquillo
Bioaccumulation of selenium in birds at Kesterson Reservoir, California
This study was conducted to determine selenium (Se) concentrations in tissues of birds collected during the 1983-1985 nesting seasons at Kesterson Reservoir (an area receiving high-Se irrigation drainage water), compare them with birds from reference sites within California's Central Valley, and relate them to food-chain Se concentrations at the study sites. Within years, Se in livers of adult bir
Authors
Harry M. Ohlendorf, Roger L. Hothem, Christine M. Bunck, Katherine C. Marois
Chemistry of trace elements in soils and groundwater
No abstract available.
Authors
Steven J. Deverel, Sabine Goldberg, Roger Fujii
Hydrogeochemistry of rivers and lakes
This chapter has three principal objectives: (1) to summarize the present chemical composition of North American surface waters and point out any discernible trends with time; (2) to review chemical and biochemical principles and processes that control natural water composition, and the ways in which these may be involved in attaining the particular chemical compositions and trends that we can obs
Authors
John David Hem, Adrian Demayo, Richard A. Smith
The production and variability of acid mine drainage at Iron Mountain, California: A superfund site undergoing rehabilitation
No abstract available.
Authors
D. Kirk Nordstrom, J.M. Burchard, Charles N. Alpers
Ground-water hydrology of Pahvant Valley and adjacent areas, Utah
The primary ground-water reservoir in Pahvant Valley and adjacent areas is in the unconsolidated basin fill and interbedded basalt. Recharge in 1959 was estimated to be about 70,000 acre-feet per year and was mostly by seepage from streams, canals, and unconsumed irrigation water and by infiltration of precipitation. Discharge in 1959 was estimated to be about 109,000 acre-feet and was mostly from
Base of moderately saline ground water in San Juan County, Utah
The base of moderately saline ground water (water that contains from 3,000 to 10,000 milligrams per liter of dissolved solids) was delineated for San Juan County, Utah, based on water-quality data and on formation-water resistivities determined from geophysical well logs using the resistivity-porosity, spontaneous-potential, and resistivity-ratio methods. These data and the contour map developed f
Authors
Lewis Howells