The Kharapeh orogenic gold deposit: Geological, structural, and geochemical controls on epizonal ore formation in West Azerbaijan Province, Northwestern Iran
Shojaeddin Niroomand, Richard J. Goldfarb, Farib Moore, Mohammad Mohajjel, Erin E. Marsh
2011, Mineralium Deposita (46) 409-428
The Kharapeh gold deposit is located along the northwestern margin of the Sanandaj–Sirjan Zone (SSZ) in the West Azerbaijan province, Iran. It is an epizonal orogenic gold deposit formed within the deformed zone between central Iran and the Arabian plate during the Cretaceous–Tertiary Zagros orogeny. The deposit area is underlain...
Generalized potentiometric surface, estimated depth to water, and estimated saturated thickness of the High Plains aquifer system, March–June 2009, Laramie County, Wyoming
Timothy T. Bartos, Laura L. Hallberg
2011, Scientific Investigations Map 3180
The High Plains aquifer system, commonly called the High Plains aquifer in many publications, is a nationally important water resource that underlies a 111-million-acre area (173,000 square miles) in parts of eight States including Wyoming. Through irrigation of crops with groundwater from the High Plains aquifer system, the area that...
Quality of volatile organic compound data from groundwater and surface water for the National Water-Quality Assessment Program, October 1996–December 2008
David A. Bender, John S. Zogorski, David K. Mueller, Donna L. Rose, Jeffrey D. Martin, Cassandra K. Brenner
2011, Scientific Investigations Report 2011-5204
This report describes the quality of volatile organic compound (VOC) data collected from October 1996 to December 2008 from groundwater and surface-water sites for the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) Program. The VOC data described were collected for three NAWQA site types: (1) domestic and public-supply wells, (2)...
Status of groundwater levels and storage volume in the Equus Beds aquifer near Wichita, Kansas, January 2011
Cristi V. Hansen
2011, Scientific Investigations Map 3192
The Equus Beds aquifer in southwestern Harvey County and northwestern Sedgwick County was developed to supply water to the city of Wichita and for irrigation in south-central Kansas. Water-level and storage-volume decreases that began with the development of the aquifer in the 1940s reached record to near-record lows in January...
The Hydrogeology of the San Juan Mountains Chapter 5
Jonathan S. Caine, Anna B. Wilson
Robert Blair, George Bracksieck, editor(s)
2011, Book chapter, The Eastern San Juan Mountains Their Ecology, Geology, and Human History
Knowledge of the occurrence, storage, and flow of groundwater in mountainous regions is limited by the lack of integrated data from wells, streams, springs, and climate. In his comprehensive treatment of the hydrogeology of the San Luis Valley, Huntley (1979) hypothesized that the underlying, fractured volcanic bedrock of the San...
Assessing controls on perched saturated zones beneath the Idaho Nuclear Technology and Engineering Center, Idaho
Benjamin B. Mirus, Kim S. Perkins, John R. Nimmo
2011, Scientific Investigations Report 2011-5222
Waste byproducts associated with operations at the Idaho Nuclear Technology and Engineering Center (INTEC) have the potential to contaminate the eastern Snake River Plain (ESRP) aquifer. Recharge to the ESRP aquifer is controlled largely by the alternating stratigraphy of fractured volcanic rocks and sedimentary interbeds within the overlying vadose zone...
The American crocodile in Biscayne Bay, Florida
Michael S. Cherkiss, Stephanie S. Romañach, Frank J. Mazzotti
2011, Estuaries and Coasts (34) 529-535
Intensive crocodile monitoring programs conducted during the late 1970s and early 1980s in southern Florida resulted in an optimistic outlook for recovery of the protected species population. However, some areas with suitable crocodile habitat were not investigated, such as Biscayne Bay and the mainland shorelines of Barnes and Card Sounds....
Collection, processing, and interpretation of ground-penetrating radar data to determine sediment thickness at selected locations in Deep Creek Lake, Garrett County, Maryland, 2007
William S.L. Banks, Carole D. Johnson
2011, Scientific Investigations Report 2011-5223
The U.S. Geological Survey collected geophysical data in Deep Creek Lake in Garrett County, Maryland, between September 17 through October 4, 2007 to assist the Maryland Department of Natural Resources to better manage resources of the Lake. The objectives of the geophysical surveys were to provide estimates of sediment thickness...
Assessment of potential effects of water produced from coalbed natural gas development on macroinvertebrate and algal communities in the Powder River and Tongue River, Wyoming and Montana, 2010
David A. Peterson, Eric G. Hargett, David L. Feldman
2011, Open-File Report 2011-1294
Ongoing development of coalbed natural gas in the Powder River structural basin in Wyoming and Montana led to formation of an interagency aquatic task group to address concerns about the effects of the resulting production water on biological communities in streams of the area. Ecological assessments, made from 2005–08 under...
Results of time-domain electromagnetic soundings in Miami-Dade and southern Broward Counties, Florida
David V. Fitterman, Scott T. Prinos
2011, Open-File Report 2011-1299
Time-domain electromagnetic (TEM) soundings were made in Miami-Dade and southern Broward Counties to aid in mapping the landward extent of saltwater in the Biscayne aquifer. A total of 79 soundings were collected in settings ranging from urban to undeveloped land, with some of the former posing problems of land access...
Groundwater quality in the San Diego Drainages Hydrogeologic Province, California
Michael T. Wright, Kenneth Belitz
2011, Fact Sheet 2011-3111
More than 40 percent of California's drinking water is from groundwater. To protect this vital resource, the State of California created the Groundwater Ambient Monitoring and Assessment (GAMA) Program. The Priority Basin Project of the GAMA Program provides a comprehensive assessment of the State's groundwater quality and increases public access...
Status and understanding of groundwater quality in the San Diego Drainages Hydrogeologic Province, 2004: California GAMA Priority Basin Project
Michael T. Wright, Kenneth Belitz
2011, Scientific Investigations Report 2011-5154
Groundwater quality in the approximately 3,900-square-mile (mi2) San Diego Drainages Hydrogeologic Province (hereinafter San Diego) study unit was investigated from May through July 2004 as part of the Priority Basin Project of the Groundwater Ambient Monitoring and Assessment (GAMA) Program. The study unit is located in southwestern California in the...
Percent recoveries of anthropogenic organic compounds with and without the addition of ascorbic acid to preserve finished-water samples containing free chlorine, 2004-10
Joshua F. Valder, Gregory C. Delzer, David A. Bender, Curtis V. Price
2011, Open-File Report 2011-1295
This report presents finished-water matrix-spike recoveries of 270 anthropogenic organic compounds with and without the addition of ascorbic acid to preserve water samples containing free chlorine. Percent recoveries were calculated using analytical results from a study conducted during 2004-10 for the National Water-Quality Assessment (NAWQA) Program of the U.S. Geological...
Temporal changes in spatial patterns of submersed macrophytes in two impounded reaches of the Upper Mississippi River, USA, 1998-2009
Nathan R. De Jager, Yao Yin
2011, River Systems (19) 35-47
We examined temporal changes in spatial patterns of submersed aquatic macrophytes during a recent three-fold increase in macrophyte abundance and in response to the cumulative effects of management actions (island construction and water level management) and changes in regional environmental conditions (turbidity) in two navigation pools of the Upper Mississippi...
Nitrate in the Mississippi River and its tributaries, 1980 to 2008: Are we making progress?
Lori A. Sprague, Robert M. Hirsch, Brent T. Aulenbach
2011, Environmental Science & Technology (45) 7209-7216
Changes in nitrate concentration and flux between 1980 and 2008 at eight sites in the Mississippi River basin were determined using a new statistical method that accommodates evolving nitrate behavior over time and produces flow-normalized estimates of nitrate concentration and flux that are independent of random variations in streamflow. The...
U.S. Geological Survey Karst Interest Group Proceedings, Fayetteville, Arkansas, April 26-29, 2011
Eve L. Kuniansky, editor(s)
2011, Scientific Investigations Report 2011-5031
Karst aquifer systems are present throughout parts of the United States and some of its territories and are developed in carbonate rocks (primarily limestone and dolomite) that span the entire geologic time frame. The depositional environments, diagenetic processes, and post-depositional tectonic events that form carbonate rock aquifers are varied and...
Factors that influence the hydrologic recovery of wetlands in the Northern Tampa Bay area, Florida
P. A. Metz
2011, Scientific Investigations Report 2011-5127
Reductions in groundwater withdrawals from Northern Tampa Bay well fields were initiated in mid-2002 to improve the hydrologic condition of wetlands in these areas by allowing surface and groundwater levels to recover to previously higher levels. Following these reductions, water levels at some long-term wetland monitoring sites have recovered, while...
Gravity data from the San Pedro River Basin, Cochise County, Arizona
Jeffrey R. Kennedy, Daniel Winester
2011, Open-File Report 2011-1287
The U.S. Geological Survey, Arizona Water Science Center in cooperation with the National Oceanic and Atmospheric Administration, National Geodetic Survey has collected relative and absolute gravity data at 321 stations in the San Pedro River Basin of southeastern Arizona since 2000. Data are of three types: observed gravity values and...
Borehole geophysical and flowmeter data for eight boreholes in the vicinity of Jim Woodruff Lock and Dam, Lake Seminole, Jackson County, Florida
John S. Clarke, Michael D. Hamrick, O. Gary Holloway
2011, Open-File Report 2011-1254
Borehole geophysical logs and flowmeter data were collected in April 2011 from eight boreholes to identify the depth and orientation of cavernous zones within the Miocene Tampa Limestone in the vicinity of Jim Woodruff Lock and Dam in Jackson County, Florida. These data are used to assess leakage near the...
Soils Data Related to the 1999 FROSTFIRE Burn
K.L. Manies, J.W. Harden, R. Ottmar
2011, Open-File Report 2011-1216
This report describes the sample collection and processing for U.S. Geological Survey efforts at FROSTFIRE, an experimental burn that occurred in Alaska in 1999. Data regarding carbon, water, and energy dynamics pre-fire, during, and post-fire were obtained in this landscape-scale prescribed burn. U.S. Geological Survey investigators measured changes in the...
Trends and causes of historical wetland loss, Sabine National Wildlife Refuge, southwest Louisiana
Julie Bernier, Robert A. Morton, Kyle W. Kelso
2011, Open-File Report 2011-1169
Prior U.S. Geological Survey studies (Open-File Reports 2005-1216 and 2009-1158) examined historical land- and water-area changes and estimated magnitudes of land subsidence and erosion at 10 wetland sites in the Mississippi River delta plain. The present study extends that work by analyzing interior wetland loss and relative magnitudes of subsidence...
Pesticide occurrence in groundwater in areas of high-density row crop production in Alabama, 2009
Richard S. Moreland
2011, Open-File Report 2011-1102
High-density row crop production occurs in three areas of Alabama that are underlain by productive aquifers, northern Alabama, southeastern Alabama, and Baldwin County in southwestern Alabama. The U.S. Geological Survey collected five groundwater samples from each of these three areas during 2009 for analysis of selected pesticides. Results of these...
Assessment of soil-gas, seep, and soil contamination at the North Range Road Landfill, Fort Gordon, Georgia, 2008-2009
James Landmeyer, W. Fred Falls, W. Hagan Ratliff, John B. Wellborn
2011, Open-File Report 2011-1043
Soil gas, seeps, and soil were assessed for contaminants at the North Range Road Landfill at Fort Gordon, Georgia, from October 2008 to September 2009. The assessment included delineating organic contaminants present in soil-gas samples beneath the area estimated to be the landfill and in water samples collected from three...
Summary of hydrologic testing of the Floridan aquifer system at Fort Stewart, Georgia
Gerard Gonthier
2011, Open-File Report 2011-1020
Two test wells were completed at Fort Stewart, GA, in January and February 2010 to investigate the potential of using the Lower Floridan aquifer as a source of water to satisfy anticipated increases in water use. One well was completed in the Lower Floridan aquifer at a depth of 1,255...
Water withdrawals, wastewater discharge, and water consumption in the Apalachicola-Chattahoochee-Flint River Basin, 2005, and water-use trends, 1970-2005
Richard L. Marella, Julia L. Fanning
2011, Scientific Investigations Report 2011-5130
The Apalachicola-Chattahoochee-Flint (ACF) River Basin covers about 20,500 square miles that drains parts of Alabama, Florida, and Georgia. The basin extends from its headwaters northern Georgia to the Gulf of Mexico. Population in the basin was estimated to be 3.7 million in 2005, an increase of about 41 percent from...
