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Science Quality and Integrity
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse almost 1,000 books authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
Filter Total Items: 976
Evolution and application of instream flow methodologies to small hydropower developments: an overview of the issues Evolution and application of instream flow methodologies to small hydropower developments: an overview of the issues
ethods for evaluating instream flow needs have evolved over the last 30 years resulting in two categories which are defined as “standard-setting” and “incremental”. Standard-setting methodologies refer to those measurement and interpretative techniques designed to generate a flow value(s) which is intended to maintain the fishery at some acceptable level. Incremental methodologies on the...
Authors
E. Woody Trihey, Clair B. Stalnaker
Information needs for natural fire management planning Information needs for natural fire management planning
The development and implementation of an effective natural fire management program require a clear definition of goals and objectives, an ever-expanding information base, and effective program evaluation. Examples are given from Sequoia and Kings Canyon National Parks.
Authors
David Parsons, Larry Bancroft, Thomas Nichols, Thomas Stohlgren
Computerized management and display of whooping crane observation data Computerized management and display of whooping crane observation data
No abstract available.
Authors
Rod C. Drewien, Duane A. Asherin
Seasonal Influence of Nutrients on the Physiology and Behavior of Captive Canvasbacks (Aythya valisineria) Seasonal Influence of Nutrients on the Physiology and Behavior of Captive Canvasbacks (Aythya valisineria)
Captive canvasbacks (Aythya valisineria) were maintained ad libitum on five diets during the winters of 1978-79 and 1979-80 to evaluate the effects of varying protein and energy levels on feed intake and condition. Diets were formulated to simulate either a natural diet high in invertebrates or one high in vegetation. Two diets low in protein and energy simulated stress diets. Feed...
Authors
Matthew C. Perry
Guidebook for the annual field conference of Pennsylvania geologists: Geology of an accreted terrane; the eastern Hamburg Klippe and surrounding rocks, eastern Pennsylvania Guidebook for the annual field conference of Pennsylvania geologists: Geology of an accreted terrane; the eastern Hamburg Klippe and surrounding rocks, eastern Pennsylvania
No abstract available.
Authors
Peter T. Lyttle, Jack B. Epstein, Gary George Lash
Bibliography of alluvial-fan deposits Bibliography of alluvial-fan deposits
No abstract available.
Authors
T. H. Nilsen, Thomas E. Moore
Measuring resource potential for river recreation Measuring resource potential for river recreation
No abstract available.
Authors
J.A. Fritschen, Robert T. Milhous, J. Nestler
A field test of a winter pronghorn habitat suitability index model A field test of a winter pronghorn habitat suitability index model
No abstract available.
Authors
J.G. Cook, Arthur W. Allen, M.J. Armbruster, L.L. Irwin
The physical habitat simulation system for instream flow studies The physical habitat simulation system for instream flow studies
No abstract available.
Authors
Robert T. Milhous