Simulations of potential runout and deposition of the Ferguson rockslide, Merced River Canyon, California
Roger P. Denlinger
2007, Open-File Report 2007-1275
INTRODUCTION An active rockslide in Merced River Canyon was first noticed on April 29, 2006 when a few rocks rolled onto Highway 140 between mileposts 103 and 104, compromising traffic on this highway and signaling the onset of renewed activity of the Ferguson rockslide. State highway 140 is one of the...
Water quality in the upper Anacostia River, Maryland: Continuous and discrete monitoring with simulations to estimate concentrations and yields, 2003-05
Cherie V. Miller, Angelica L. Gutierrez-Magness, Brenda L. Feit Majedi, Gregory D. Foster
2007, Scientific Investigations Report 2007-5142
From 2003 through 2005, continuous and discrete waterquality data were collected at two stations on the Anacostia River in Maryland: Northeast Branch at Riverdale, Maryland (U.S. Geological Survey Station 01649500) and Northwest Branch near Hyattsville, Maryland (Station 01651000). Both stations are above the heads of tide for the river, and...
Population size and trends for nesting ospreys in northwestern Mexico: Region-wide surveys, 1977, 1992/1993 and 2006
Charles J. Henny, Daniel W. Anderson, Aradit Castellanos Vera, Jean-Luc E. Carton
2007, Open-File Report 2007-1298
We used a double-sampling technique (air plus ground survey) in 2006, with partial double coverage, to estimate the present size of the osprey (Pandion haliaetus) nesting population in northwestern Mexico. With the exception of Natividad, Cedros, and San Benito Islands along the Pacific Coast of Baja California, all three excluded...
USGS Digital Spectral Library splib06a
Roger N. Clark, Gregg A. Swayze, Richard A. Wise, K. Eric Livo, Todd M. Hoefen, Raymond F. Kokaly, Stephen J. Sutley
2007, Data Series 231
Introduction We have assembled a digital reflectance spectral library that covers the wavelength range from the ultraviolet to far infrared along with sample documentation. The library includes samples of minerals, rocks, soils, physically constructed as well as mathematically computed mixtures, plants, vegetation communities, microorganisms, and man-made materials. The samples and spectra...
Gravity Data from Newark Valley, White Pine County, Nevada
Edward A. Mankinen, Edwin H. McKee
2007, Open-File Report 2007-1306
The Newark Valley area, eastern Nevada is one of thirteen major ground-water basins investigated by the BARCAS (Basin and Range Carbonate Aquifer Study) Project. Gravity data are being used to help characterize the geophysical framework of the region. Although gravity coverage was extensive over parts of the BARCAS study area,...
Hydrologic, Hydraulic, and Flood Analyses of the Blackberry Creek Watershed, Kendall County, Illinois
Elizabeth A. Murphy, Timothy D. Straub, David T. Soong, Christopher S. Hamblen
2007, Scientific Investigations Report 2007-5141
Results of the hydrologic model, flood-frequency, hydraulic model, and flood-hazard analysis of the Blackberry Creek watershed in Kendall County, Illinois, indicate that the 100-year and 500-year flood plains cover approximately 3,699 and 3,762 acres of land, respectively. On the basis of land-cover data for 2003, most of the land in...
Analyses of Water-Level Differentials and Variations in Recharge between the Surficial and Upper Floridan Aquifers in East-Central and Northeast Florida
Louis C. Murray Jr.
2007, Scientific Investigations Report 2007-5081
Continuous (daily) water-level data collected at 29 monitoring-well cluster sites were analyzed to document variations in recharge between the surficial (SAS) and Floridan (FAS) aquifer systems in east-central and northeast Florida. According to Darcy's law, changes in the water-level differentials (differentials) between these systems are proportional to changes in the...
Comparison of peak-flow estimation methods for small drainage basins in Maine
Glenn A. Hodgkins, Charles Hebson, Pamela J. Lombard, Alexander Mann
2007, Scientific Investigations Report 2007-5170
Understanding the accuracy of commonly used methods for estimating peak streamflows is important because the designs of bridges, culverts, and other river structures are based on these flows. Different methods for estimating peak streamflows were analyzed for small drainage basins in Maine. For the smallest basins, with drainage areas of...
Paleoecology and ecosystem restoration: Case studies from Chesapeake Bay and the Florida Everglades
Debra A. Willard, Thomas M. Cronin
2007, Frontiers in Ecology and the Environment (5) 491-498
Climate extremes that cause droughts, floods, or large temperature fluctuations can complicate ecosystem restoration efforts focused on local and regional human disturbance. Restoration targets are often based primarily on monitoring data and modeling simulations, which provide information on species' short-term response to disturbance and environmental variables. Consequently,...
Diatoms in estuaries and tidal marshes
Scott W. Starratt
2007, The Paleontological Society Papers (13) 85-109
Diatoms from estuarine and marsh sediments can be used to evaluate a number of geological processes. Information on salinity, elevation, and substrate derived from modern assemblages have been used to determine local and regional Holocene sea level history, identify seismic and tsunami events, and aid in the recognition of regional...
Climate Change Research at USGS Center for Earth Resources Observation and Science (EROS)
U.S. Geological Survey
2007, Fact Sheet 2007-3091
Research and development projects at EROS apply unique resources to support the USGS mission of developing understanding, monitoring, and modeling of climate variability and change and their human, physical, and biological impacts. Remote sensing resources, both new and archived, form the core of our ability to determine changes in the...
USGS goals for the coming decade
M.D. Myers, M. A. Ayers, Jill Baron, P.R. Beauchemin, Martin B. Goldhaber, Deborah R. Hutchinson, James W. LaBaugh, Roger G. Sayre, Steven E. Schwarzbach, Eugene S. Schweig, June M. Thormodsgard, Charles van Riper III, W. Wilde
2007, Science (318) 200-201
The U.S. Geological Survey (USGS) proposes six strategic directions for managing ecosystems along with modernization of observation networks of land, water, and biological resources....
Spatial and temporal patterns of net primary productivity in the duration of 1981-2000 in Guangdong, China
Hai-Gui Liu, Xu-Li Tang, Guo-Yi Zhou, Shu-Guang Liu
2007, Acta Ecologica Sinica (27) 4065-4074
The knowledge of net primary production (NPP) dynamics at regional scale will help to understand terrestrial carbon cycling, especially with respect to land use and global climate change. Guangdong province has high plant growth potential because of plenty of light, heat, and water resources in this region. Forest coverage increased...
Chronology of postglacial eruptive activity and calculation of eruption probabilities for Medicine Lake volcano, northern California
Manuel Nathenson, Julie M. Donnelly-Nolan, Duane E. Champion, Jacob B. Lowenstern
2007, Scientific Investigations Report 2007-5174-B
Medicine Lake volcano has had 4 eruptive episodes in its postglacial history (since 13,000 years ago) comprising 16 eruptions. Time intervals between events within the episodes are relatively short, whereas time intervals between the episodes are much longer. An updated radiocarbon chronology for these eruptions is presented that uses paleomagnetic...
Concentrations and Loads of Nutrients and Suspended Sediments in Englesby Brook and Little Otter Creek, Lake Champlain Basin, Vermont, 2000-2005
Laura Medalie
2007, Scientific Investigations Report 2007-5074
The effectiveness of best-management practices (BMPs) in improving water quality in Lake Champlain tributaries was evaluated from 2000 through 2005 on the basis of analysis of data collected on concentrations of total phosphorus and suspended sediment in Englesby Brook, an urban stream in Burlington, and Little Otter Creek, an agricultural...
Effect of storms on barrier island dynamics, Core Banks, Cape Lookout National Seashore, North Carolina, 1960-2001
Stanley R. Riggs, Dorothea V. Ames
2007, Scientific Investigations Report 2006-5309
The effect of storms on long-term dynamics of barrier islands was evaluated on Core Banks, a series of barrier islands that extend from Cape Lookout to Okracoke Inlet in the Cape Lookout National Seashore, North Carolina. Shoreline and elevation changes were determined by comparing 77 profiles and associated reference markers...
Evaluation of ground-water and boron sources by use of boron stable-isotope ratios, tritium, and selected water-chemistry constituents near Beverly Shores, northwestern Indiana, 2004
Paul M. Buszka, John A. Fitzpatrick, Lee R. Watson, Robert T. Kay
2007, Scientific Investigations Report 2007-5166
Concentrations of boron greater than the U.S. Environmental Protection Agency (USEPA) 900 μg/L removal action level (RAL) standard were detected in water sampled by the USEPA in 2004 from three domestic wells near Beverly Shores, Indiana. The RAL regulates only human-affected concentrations of a constituent. A lack of well logs...
Flood of June 22-24, 2006, in North-Central Ohio, With Emphasis on the Cuyahoga River Near Independence
James M. Sherwood, Andrew D. Ebner, G. F. Koltun, Brian M. Astifan
2007, Scientific Investigations Report 2007-5161
Heavy rains caused severe flooding on June 22-24, 2006, and damaged approximately 4,580 homes and 48 businesses in Cuyahoga County. Damage estimates in Cuyahoga County for the two days of flooding exceed $47 million; statewide damage estimates exceed $150 million. Six counties (Cuyahoga, Erie, Huron, Lucas, Sandusky, and Stark) in...
Suspended-Sediment Loads and Yields in the North Santiam River Basin, Oregon, Water Years 1999-2004
Heather M. Bragg, Steven Sobieszczyk, Mark A. Uhrich, David R. Piatt
2007, Scientific Investigations Report 2007-5187
The North Santiam River provides drinking water to the residents and businesses of the city of Salem, Oregon, and many surrounding communities. Since 1998, water-quality data, including turbidity, were collected continuously at monitoring stations throughout the basin as part of the North Santiam River Basin Turbidity and Suspended Sediment Study....
Precipitation and Runoff Simulations of the Carson Range and Pine Nut Mountains, and Updated Estimates of Ground-Water Inflow and the Ground-Water Budgets for Basin-Fill Aquifers of Carson Valley, Douglas County, Nevada, and Alpine County, California
Anne E. Jeton, Douglas K. Maurer
2007, Scientific Investigations Report 2007-5205
Recent estimates of ground-water inflow to the basin-fill aquifers of Carson Valley, Nevada, and California, from the adjacent Carson Range and Pine Nut Mountains ranged from 22,000 to 40,000 acre-feet per year using water-yield and chloride-balance methods. In this study, watershed models were developed for watersheds with perennial streams and...
Marine geophysical investigation of selected sites in Bridgeport Harbor, Connecticut, 2006
Carole D. Johnson, Eric A. White
2007, Scientific Investigations Report 2007-5119
A marine geophysical investigation was conducted in 2006 to help characterize the bottom and subbottom materials and extent of bedrock in selected areas of Bridgeport Harbor, Connecticut. The data will be used by the U.S. Army Corps of Engineers in the design of confined aquatic disposal (CAD) cells within the...
Temperature Effects of Point Sources, Riparian Shading, and Dam Operations on the Willamette River, Oregon
Stewart A. Rounds
2007, Scientific Investigations Report 2007-5185
Water temperature is an important factor influencing the migration, rearing, and spawning of several important fish species in rivers of the Pacific Northwest. To protect these fish populations and to fulfill its responsibilities under the Federal Clean Water Act, the Oregon Department of Environmental Quality set a water temperature Total...
Modeling the Spatial and Temporal Variation of Monthly and Seasonal Precipitation on the Nevada Test Site and Vicinity, 1960-2006
Joan B. Blainey, Robert H. Webb, Christopher S. Magirl
2007, Open-File Report 2007-1269
The Nevada Test Site (NTS), located in the climatic transition zone between the Mojave and Great Basin Deserts, has a network of precipitation gages that is unusually dense for this region. This network measures monthly and seasonal variation in a landscape with diverse topography. Precipitation data from 125 climate stations...
Preliminary Isostatic Gravity Map of Joshua Tree National Park and Vicinity, Southern California
V.E. Langenheim, Shawn Biehler, D.K. McPhee, C.A. McCabe, J. T. Watt, M.L. Anderson, B. A. Chuchel, P. Stoffer
2007, Open-File Report 2007-1218
This isostatic residual gravity map is part of an effort to map the three-dimensional distribution of rocks in Joshua Tree National Park, southern California. This map will serve as a basis for modeling the shape of basins beneath the Park and in adjacent valleys and also for determining the location and...
Effects of the temporal variability of evapotranspiration on hydrologic simulation in central Florida
Andrew M. O’Reilly
2007, Scientific Investigations Report 2007-5100
The transient response of a hydrologic system can be of concern to water-resource managers, because it is often extreme relatively short-lived events, such as floods or droughts, that profoundly influence the management of the resource. The water available to a hydrologic system for stream flow and aquifer recharge is determined...
