Abundance Trends and Status of the Little Colorado River Population of Humpback Chub: An Update Considering Data From 1989-2008
Coggins Jr., Carl J. Walters
2009, Open-File Report 2009-1075
Mark-recapture methods have been used for the past two decades to assess trends in adult abundance and recruitment of the Little Colorado River (LCR) population of humpback chub. These methods indicate that the adult population declined through the 1980s and early 1990s but has been increasing for the past decade....
Status and trends of the Grand Canyon population of Humpback Chub
Matthew E. Andersen
2009, Fact Sheet 2009-3035
The Colorado River Basin supports one of the most distinctive fish communities in North America, including the federally endangered humpback chub (Gila cypha). One of only six remaining populations of this fish is found in Grand Canyon, Arizona. U.S. Geological Survey scientists and their cooperators are responsible for monitoring the...
Geologic Map of the Yukon-Koyukuk Basin, Alaska
William W. Patton Jr., Frederic H. Wilson, Keith A. Labay, Nora B. Shew
2009, Scientific Investigations Map 2909
This map and accompanying digital files represent part of a systematic effort to release geologic data for the United States in a uniform manner. All the geologic data in this series will be published as parts of the U.S. Geological Survey Data Series. The geologic data in this series have...
Primary Productivity in Meduxnekeag River, Maine, 2005
Robert M. Goldstein, Charles W. Schalk, Joshua P. Kempf
2009, Scientific Investigations Report 2009-5029
During August and September 2005, dissolved oxygen, temperature, pH, specific conductance, streamflow, and light intensity (LI) were determined continuously at six sites defining five reaches on Meduxnekeag River above and below Houlton, Maine. These data were collected as input for a dual-station whole-stream metabolism model to evaluate primary productivity in...
Baseline Channel Geometry and Aquatic Habitat Data for Selected Streams in the Matanuska-Susitna Valley, Alaska
Janet H. Curran, William J. Rice
2009, Scientific Investigations Report 2009-5084
Small streams in the rapidly developing Matanuska-Susitna Valley in south-central Alaska are known to support anadromous and resident fish but little is known about their hydrologic and riparian conditions, or their sensitivity to the rapid development of the area or climate variability. To help address this need, channel geometry and...
Vulnerability of carbon storage in North American boreal forests to wildfires during the 21st century
M. S. Balshi, Anthony McGuire, P. Duffy, M. Flannigan, D. W. Kicklighter, J. Melillo
2009, Global Change Biology (15) 1491-1510
The boreal forest contains large reserves of carbon. Across this region, wildfires influence the temporal and spatial dynamics of carbon storage. In this study, we estimate fire emissions and changes in carbon storage for boreal North America over the 21st century. We use a gridded data set developed with...
ModelMuse - A Graphical User Interface for MODFLOW-2005 and PHAST
Richard B. Winston
2009, Techniques and Methods 6-A29
ModelMuse is a graphical user interface (GUI) for the U.S. Geological Survey (USGS) models MODFLOW-2005 and PHAST. This software package provides a GUI for creating the flow and transport input file for PHAST and the input files for MODFLOW-2005. In ModelMuse, the spatial data for the model is independent of...
Examining Submarine Ground-Water Discharge into Florida Bay by using 222Rn and Continuous Resistivity Profiling
Peter Swarzenski, Chris Reich, David Rudnick
2009, Open-File Report 2008-1342
Estimates of submarine ground-water discharge (SGD) into Florida Bay remain one of the least understood components of a regional water balance. To quantify the magnitude and seasonality of SGD into upper Florida Bay, research activities included the use of the natural geochemical tracer, 222Rn, to examine potential SGD hotspots (222Rn...
Benthic foraminiferal census data from Louisiana continental shelf cores, Gulf of Mexico
Lisa E. Osterman, Wendy S. Kelly, John P. Ricardo
2009, Open-File Report 2008-1348
An area of oxygen-depleted bottom- and subsurface-water (hypoxia = dissolved oxygen < 2 mg/L-1) occurs seasonally on the Louisiana Shelf near the Mississippi River. The area of hypoxia, also known as the “dead zone,” forms when spring and early summer freshwater flow from the Mississippi River supplies a large amount...
Streamflow Simulations and Percolation Estimates Using the Soil and Water Assessment Tool for Selected Basins in North-Central Nebraska, 1940-2005
Kellan R. Strauch, Joshua I. Linard
2009, Scientific Investigations Report 2009-5075
The U.S. Geological Survey, in cooperation with the Upper Elkhorn, Lower Elkhorn, Upper Loup, Lower Loup, Middle Niobrara, Lower Niobrara, Lewis and Clark, and Lower Platte North Natural Resources Districts, used the Soil and Water Assessment Tool to simulate streamflow and estimate percolation in north-central Nebraska to aid development of...
Oblique Aerial Photography of the Arctic Coast of Alaska, Nulavik to Demarcation Point, August 7-10, 2006
Ann E. Gibbs, Bruce M. Richmond
2009, Data Series 436
The Arctic Coastal Plain of northern Alaska, an area of strategic economic importance to the United States, is home to remote Native American communities and encompasses unique habitats of global significance. Coastal erosion along the Arctic coast is chronic and widespread; recent evidence suggests that erosion rates are among the...
Selected Geochemical Data for Modeling Near-Surface Processes in Mineral Systems
Stuart A. Giles, Matthew Granitto, Robert G. Eppinger
2009, Data Series 433
The database herein was initiated, designed, and populated to collect and integrate geochemical, geologic, and mineral deposit data in an organized manner to facilitate geoenvironmental mineral deposit modeling. The Microsoft Access database contains data on a variety of mineral deposit types that have variable environmental effects when exposed at the...
Defining optimal freshwater flow for oyster production: effects of freshet rate and magnitude of change and duration on eastern oysters and Perkinsus marinus infection
Megan K. LaPeyre, B. Gossman, Jerome F. La Peyre
2009, Estuaries and Coasts (32) 522-534
In coastal Louisiana, the development of large-scale freshwater diversion projects has led to controversy over their effects on oyster resources. Using controlled laboratory experiments in combination with a field study, we examined the effects of pulsed freshwater events (freshet) of different magnitude, duration, and rate of change on oyster resources....
Seismic-wave strain, rotation, and gradiometry for the 4 March 2008 TAIGER explosions
Charles A. Langston, W.H.K. Lee, C.J. Lin, C.-C. Liu
2009, Bulletin of the Seismological Society of America (99) 1287-1301
Acceleration spatial gradients, horizontal strains, and horizontal rotation were computed using strong-motion array data from the 4 March 2008 TAIGER explosions in northeastern Taiwan and used in conjunction with the original three component acceleration data to perform a gradiometric analysis of the strong ground motion wave train. The...
Drilling and testing the DOI-04-1A coalbed methane well, Fort Yukon, Alaska
Arthur Clark, Charles E. Barker, Edwin P. Weeks
2009, Open-File Report 2009-1064
The need for affordable energy sources is acute in rural communities of Alaska where costly diesel fuel must be delivered by barge or plane for power generation. Additionally, the transport, transfer, and storage of fuel pose great difficulty in these regions. Although small-scale energy development in remote Arctic locations presents...
Iodine-129 in the Snake River Plain Aquifer at and Near the Idaho National Laboratory, Idaho, 2003 and 2007
Roy C. Bartholomay
2009, Scientific Investigations Report 2009-5088
From 1953 to 1988, wastewater containing approximately 0.94 curies of iodine-129 (129I) was generated at the Idaho National Laboratory (INL) in southeastern Idaho. Almost all of this wastewater was discharged at or near the Idaho Nuclear Technology and Engineering Center (INTEC) on the INL site. Most of the wastewater was...
Preliminary assessment of vertical stability and gravel transport along the Umpqua River, southwestern Oregon
Jim E. O'Connor, J. Rose Wallick, Steven Sobieszczyk, Charles Cannon, Scott W. Anderson
2009, Open-File Report 2009-1010
This report addresses physical channel issues related to instream gravel mining on the Umpqua River and its two primary tributaries, the North and South Umpqua Rivers. This analysis constitutes a “Phase I” investigation, as designated by an interagency team cochaired by the U.S. Army Corps of Engineers, Portland District, and...
EAARL Coastal Topography - Northern Gulf of Mexico, 2007: First surface
Kathryn E. L. Smith, Amar Nayegandhi, C. Wayne Wright, Jamie M. Bonisteel, John Brock
2009, Data Series 399
These remotely sensed, geographically referenced elevation measurements of Lidar-derived first surface (FS) elevation data were produced as a collaborative effort between the U.S. Geological Survey (USGS), Florida Integrated Science Center (FISC), St. Petersburg, FL; the National Park Service (NPS), Gulf Coast Network, Lafayette, LA; and the National Aeronautics and Space...
EAARL coastal topography — Northern Gulf of Mexico, 2007: Bare earth
Kathryn E. L. Smith, Amar Nayegandhi, C. Wayne Wright, Jamie M. Bonisteel, John Brock
2009, Data Series 400
These remotely sensed, geographically referenced elevation measurements of Lidar-derived bare earth (BE) topography were produced as a collaborative effort between the U.S. Geological Survey (USGS), Florida Integrated Science Center (FISC), St. Petersburg, FL; the National Park Service (<abbr title="National...
EAARL topography - George Washington Birthplace National Monument 2008
John Brock, Amar Nayegandhi, C. Wayne Wright, Sara Stevens, Xan Yates
2009, Data Series 401
These remotely sensed, geographically referenced elevation measurements of Lidar-derived bare earth (BE) and first surface (FS) topography were produced as a collaborative effort between the U.S. Geological Survey (USGS), Florida Integrated Science Center (FISC), St. Petersburg, FL; the National Park Service (NPS), Northeast Coastal and Barrier Network, Kingston, RI; and...
Archive of digital boomer and CHIRP seismic reflection data collected during USGS field activity 08LCA03 in Lake Panasoffkee, Florida, May 2008
Arnell S. Harrison, Shawn V. Dadisman, W. Scott McBride, James G. Flocks, Dana S. Wiese
2009, Data Series 420
In May of 2008, the U.S. Geological Survey (USGS) conducted geophysical surveys in Lake Panasoffkee, located in central Florida, as part of the USGS Lakes and Coastal Aquifers (LCA) study. This report serves as an archive of unprocessed digital boomer and Compressed High Intensity Radar Pulse (CHIRP)* seismic reflection data,...
Hurricane Ike: Observations and analysis of coastal change
Kara S. Doran, Nathaniel G. Plant, Hilary F. Stockdon, Asbury H. Sallenger Jr., Katherine A. Serafin
2009, Open-File Report 2009-1061
Understanding storm-induced coastal change and forecasting these changes require knowledge of the physical processes associated with the storm and the geomorphology of the impacted coastline. The primary physical processes of interest are the wind field, storm surge, and wave climate. Not only does wind cause direct damage to structures along...
Archive of digital boomer seismic reflection data collected during USGS field activity 08LCA01 in 10 central Florida lakes, March 2008
Arnell S. Harrison, Shawn V. Dadisman, Jeffrey B. Davis, James G. Flocks, Dana S. Wiese
2009, Data Series 421
No abstract available....
Quantifying Equid Behavior - A Research Ethogram for Free-Roaming Feral Horses
Jason I. Ransom, Brian S. Cade
2009, Techniques and Methods 2-A9
Feral horses (Equus caballus) are globally distributed in free-roaming populations on all continents except Antarctica and occupy a wide range of habitats including forest, grassland, desert, and montane environments. The largest populations occur in Australia and North America and have been the subject of scientific study for decades, yet guidelines...
Transient electromagnetic soundings near Great Sand Dunes National Park and Preserve, San Luis Valley, Colorado (2006 field season)
David V. Fitterman, Oderson A. de Souza Filho
2009, Open-File Report 2009-1051
Time-domain electromagnetic (TEM) soundings were made near Great Sand Dunes National Park and Preserve in the San Luis Valley of southern Colorado to obtain subsurface information of use to hydrologic modeling. Seventeen soundings were made to the east and north of the sand dunes. Using a small loop TEM system,...
