C.A. Ribic, S.J. Lewis (compiler), S. Melvin, J. Bart (compiler), B. Peterjohn (compiler)
1999, Book
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Publication Extents
Not all publications have extents, not all extents are completely accurateG.Y. Rodda, Y. Sawai, D. Chiszar, H. Tanaka, editor(s)
1999, Book
R.W. McDiarmid, J. A. Campbell, T. Toure
1999, Book
Given the absence of a current source on snake diversity and nomenclature and the expressed global need to understand better the diversity of our biota, we think that a catalogue of the world snake fauna complete with synonymies at the familial, generic, and specific levels is essential. We provide that...
Richard M. Kocan, Paul K. Hershberger, James R. Winton
1999, Report, Investigations of disease factors affecting declines of Pacific herring populations in Prince William Sound
From 1995 through 1998 the controlled disease studies covered a wide range of topics including virus survival in seawater, development of natural immunity, effects of oil exposure on immunity, effect of synthetic immunosuppressants, epizootiology of VHSV in net pens, antibody production and the natural history of VHS in Pacific herring....
Water Resources Division, U.S. Geological Survey
1999, Report
This new version of the USGS Strategic Plan builds on our first strategic plan, which was developed in 1996, and focuses specifically on strategic goals in four areas: customers, programs, people, and operations of the USGS....
Denny R. Buckler, Gregory E. Granato
1999, Open-File Report 99-240
Increased emphasis on evaluation of nonpoint-source pollution has intensified the need for techniques that can be used to discern the toxicological effects of complex chemical mixtures. In response, the use of biological assessment techniques is receiving increased regulatory emphasis. When applied with documented habitat assessment and chemical analysis, these techniques...
Jonathan W. Godt
1999, Miscellaneous Field Studies Map 2325
Heavy rainfall associated with a strong El Nino caused over $150 million in landslide damage in the 10-county San Francisco Bay region during the winter and spring of 1998. Reports of landsliding began in early January 1998 and continued throughout the winter and spring. On February 9, President Clinton declared...
Steven C. Hess, Paul C. Banko, Gregory J. Brenner, James D. Jacobi
1999, Biotropica (31) 212-219
We measured mature tree and sapling density, tree associations, crown size, age structure, recovery from ungulate browsing, and grass cover at four study sites in two types of subalpine woodland on Mauna Kea volcano, island of Hawaii. Beginning in 1981, introduced ungulates were reduced in number to allow regeneration of...
Water Resources Division, U.S. Geological Survey
1999, Fact Sheet 050-99
Tony P. Schrader
1999, Water-Resources Investigations Report 99-4208-A
Nacatoch Sand and Tokio Formation aquifers in southwestern Arkansas and the Nacatoch Sand aquifer in northeastern Arkansas are a source of water for industrial, public supply, domestic, and agricultural uses. Potentiometric-surface maps were constructed from water-level measurements made in 59 wells completed in the Nacatoch Sand and 45 wells completed...
G. Gandhok, R. D. Catchings, M. R. Goldman, E. Horta, M. J. Rymer, P. Martin, A. Christensen
1999, Open-File Report 99-320
This report is the second of two reports on seismic imaging investigations conducted by the U.S. Geological Survey (USGS) during the summers of 1997 and 1998 in the Cherry Valley area in California (Figure 1a). In the first report (Catchings et al., 1999), data and interpretations were presented for four...
Andrew Simon
1999, Open-File Report 96-633
VeeAnn Cross, William C. Schwab
1999, Open-File Report 98-427
No abstract available....
Laura M. Bexfield, William E. Lindberg, Scott K. Anderholm
1999, Open-File Report 99-195
The City of Albuquerque has collected and analyzed more than 5,000 water-quality samples from 113 water-supply wells in the Albuquerque area, including many drinking-water supply wells, since May of 1988. As a result, a large water-quality data base has been compiled that includes data for major ions, nutrients, trace elements,...
Robin A. Brightbill, Michael D. Bilger
1999, Open-File Report 99-210
Robin A. Brightbill, Michael D. Bilger
1999, Open-File Report 99-208
Between February 1997 and September 1997, 10 monitor wells were drilled near the site of the former Naval Air Warfare Center, Warminster, Bucks County, Pa., to monitor water levels and sample ground-water contaminants in the shallow, intermediate, and deep water-bearing zones. The sampling will determine the horizontal and vertical distribution of contaminated ground...
Valerie J. Kelly, Dennis D. Lynch, Stewart A. Rounds
1999, Open-File Report 99-232
In the 1980s significant nutrient-related water-quality problems that impacted beneficial uses were identified in the Tualatin River during the low-flow summer months, defined as .May 1 to October 31. Unsightly algal blooms resulted in fluctuations in oxygen concentrations and pH conditions; reduction of phosphorus concentrations was determined to the effective...
Peter C. Van Metre, B.J. Mahler
1999, Fact Sheet 183-99
Town Lake, the last in the chain of Highland Lakes on the Colorado River, runs through the center of Austin, Texas. On any given day, grebes and coots dot the water, rowers skim alongside, and the sparkle of the sun on the water can be admired from the adjacent hike...
Lawrence J. Poppe, R. S. Lewis, H.J. Knebel, Mohabir Persaud, J. F. Denny, K. F. Parolski, M. L. DiGiacomo-Cohen
1999, IMAP 2692
No abstract available....
Page C. Valentine, Tanya S. Unger, Jessica L. Baker
1999, IMAP 2708
Page C. Valentine, Jessica L. Baker, Tanya S. Unger
1999, IMAP 2707
No abstract available....
Mason Jr., Jeffrey N. King, Wilbert O. Thomas Jr.
1999, Fact Sheet 111-98
Steven W. Nelson, Marti L. Miller, Peter J. Haeussler, Lawrence W. Snee, Patti J. Philips, Carol Huber
1999, Open-File Report 99-362
In 1990, both the U.S. Geological Survey and U.S. Bureau of Mines were contacted by the Chugach National Forest (CNF) for the purpose of providing mineral resource information for the CNF Master Plan during the planning period fiscal years 1991-1994. This information is to address the terms and requirements of...
Yu-Fai Leung, Jeffrey L. Marion
1999, Environmental Conservation (26) 270-279
The degradation of trail resources associated with expanding recreation and tourism visitation is a growing management problem in protected areas worldwide. In order to make judicious trail and visitor management decisions, protected area managers need objective and timely information on trail resource conditions. This paper introduces a trail survey method...
A.G. Strickland
1999, Water-Resources Investigations Report 99-4127
Water-level measurements were made on a periodic basis from October 1994 through November 1998 in 17 wells that tap the upper Cape Fear aquifer. The approximately 730-square-mile study area in Bladen and Robeson Counties is in the southern Coastal Plain of North Carolina. Water-level declines occurred in the aquifer throughout...