Walleye fishery of Lake Erie in 1943-62 with emphasis on contributions of the 1942-61 year-classes
John W. Parsons
1970, Journal of the Fisheries Research Board of Canada (27) 1475-1489
The commercial fishery for walleyes (Stizostedion vitreum vitreum) in Lake Erie virtually collapsed in the late 1950's. The extreme decline in production was attributed primarily to a succession of weak year-classes, caused by habitat deterioration (increased water temperatures, enrichment, and pollution) in western Lake Erie. Unusually high fishing intensity and...
Body-scale relation and calculation of growth in fishes
Ralph Hile
1970, Transactions of the American Fisheries Society (99) 468-474
Most calculations of fish growth from scale measurements are made from one of four types of curves: straight line through the origin (Dahl-Lea); straight line with intercept (Lee); logarithmic line (Monastyrsky); empirically derived curve (SegerstråYle). Occasionally, different curves are used for different length intervals of fish. Present understanding of the...
Growth, age at metamorphosis, and sex ratio of northern brook lamprey in a tributary of southern Lake Superior
Harold A. Purvis
1970, Copeia (1970) 326-332
Growth was studied of five year classes of the northern brook lamprey, Ichthyomyzon fossor, collected from the Sturgeon River during intervals between treatment of the stream with a lampricide. Growth varied considerably among year classes. Larvae of the 1963 year class were slightly longer at age II and 30% longer...
Status of duck virus enteritis (duck plague) in the United States
John W. Walker, C.J. Pfow, S.S. Newcomb, W.D. Urban, H.E. Nadler, L. N. Locke
1970, Proceedings of the U.S. Animal Health Association (1969) (73) 254-279
No abstract available....
John Wesley Powell: soldier, explorer, scientist
Water Resources Division, U.S. Geological Survey
1970, Report
One hundred years ago John Wesley Powell and nine adventure-seeking companions completed the first exploration of the dangerous and almost uncharted canyons of the Green and Colorado Rivers. By this trip, Powell, a 35-year old teacher of natural history, apparently unhampered by the lack of his right forearm (amputated after...
Structural control of wind gaps and water gaps and of stream capture in the Stroudsburg area
Jack B. Epstein
1969, Conference Paper, Geology of selected areas in New Jersey and eastern Pennsylvania and guidebook
No abstract available....
Water resources data Maryland and Delaware, water year 1967, Part 1. Surface water records
U.S. Geological Survey
1969, Water Data Report MD-DE-67-1
No abstract available....
Water resources data Maryland and Delaware, water year 1967, Part 2. Water quality records
U.S. Geological Survey
1969, Water Data Report MD-DE-67-2
No abstract available. ...
Discharge measurements at gaging stations
Thomas J. Buchanan, William P. Somers
1969, Techniques of Water-Resources Investigations 03-A8
The techniques used in making discharge measurements at gaging stations are described in this report. Most of the report deals with the current-meter method of measuring discharge, because this is the principal method used in gaging streams. The use of portable weirs and flumes, floats, and volumetric tanks in measuring...
Developing a state water plan: Ground-water conditions in Utah, spring of 1969
C.H. Baker Jr., L.J. Bjorklund, E.L. Bolke, R. W. Mower, L. R. Herbert, R.M. Cordova, R.G. Butler, G. W. Sandberg
1969, Cooperative Investigations Report 7
This report is the sixth in a series of annual reports that describe ground-water conditions in Utah. Reports in this series are prepared cooperatively by the U.S. Geological Survey and the Utah Division of Water Resources and are designed to provide data to enable interested parties such as legislators, administrators,...
Hydrologic reconnaissance of Curlew Valley, Utah and Idaho
E.L. Bolke, Don Price
1969, Technical Publication 25
This report is the fifth in a series of reports prepared by the U. S. Geological Survey in cooperation with the Utah Department of Natural Resources, Division of Water Rights, that describe the water resources of selected basins in western Utah. Previously published reports in this series are listed on...
Reconnaissance of the ground-water resources of the upper Fremont River valley, Wayne County, Utah
L.J. Bjorklund
1969, Technical Publication 22
This report presents the results of an investigation of the ground-water resources of the upper Fremont River valley, Utah, which was carried out during the period July 1966-June 1967, by the U.S. Geological Survey in cooperation with the Utah Department of Natural Resources, Division of Water Rights. The purpose of...
Hydrologic reconnaissance of Rush Valley, Tooele County, Utah
James W. Hood, Don Price, K.M. Waddell
1969, Technical Publication 23
This report is the third in a series by the U. S. Geological Survey in cooperation with the Utah Department of Natural Resources, Division of Water Rights, which describes the water resources of the western basins of Utah. Its purpose is to present available hydrologic data for Rush Valley, to...
Summary of maximum discharges in Utah streams
G.L. Whitaker
1969, Technical Publication 21
The purpose of this report is to summarize the mass of data pertaining to high rates of streamflow which has been assembled in Utah over a period of many decades. The pertinent data are presented in tables 1-4 and are summarized by graphs in figures 3 and 4. These data...
Hydrologic reconnaissance of Deep Creek valley, Tooele and Juab Counties, Utah and Elko and White Pine Counties, Nevada
James W. Hood, K.M. Waddell
1969, Technical Publication 24
This report, the fourth in a series by the U. S. Geological Survey in cooperation with the Utah Department of Natural Resources, Division of Water Rights, describes water resources of the western basins of Utah. Its purpose is to present available hydrologic data on Deep Creek valley, to provide an...
Petroleum potential of the Kandik basin, east-central Alaska
Michael Churkin, Earl E. Brabb
1969, Open-File Report 1305 MP
No abstract available....
Geology and Ground Water Resources of Ocean County, New Jersey
Henry R. Anderson, Charles A. Appel
1969, Special Report 29
Effects of pumping from the Ohio River Valley alluvium between Carrollton and Ghent, Kentucky
D. V. Whitesides, Paul D. Ryder
1969, Kentucky Geological Survey Information Circular 18
Ground-water conditions in McMullen valley, Maricopa, Yuma and Yavapai Counties, Arizona
P.C. Briggs
1969, Water-Resources Report 40
McMullen Valley is in western Arizona about 80 miles northwest of Phoenix (fig. 1). The valley, which is about 48 miles long and 15 miles wide, is bordered on the south by the Harquahala and Little Harquahala Mountains, on the north by the Harcuvar Mountains, and on the west by...
Analog-digital models of stream-aquifer systems
E. A. Moulder, C.T. Jenkins
1969, Report
The best features of analog and digital computers were combined to make a management model of a stream-aquifer system. The analog model provides a means for synthesizing, verifying, and summarizing aquifer properties; the digital model permits rapid calculation of the effects of water management practices. Given specific management alternatives, a...
Effects of mineralized artesian water on the fresh-water biota of Taylor Slough, Everglades National Park, Florida
Milton C. Kolipinski, Aaron L. Higer
1969, Open-File Report FL 69-009
The feasibility of using water from the Floridian aquifer during periods of drought to maintain water levels in the aquatic communities at the Royal Palm Visitor Center in Everglades National Park was tested....
Water resources data for California, 1968; Part 1: Surface water records; Volume 1: Colorado River Basin, Southern Great Basin, and Pacific Slope Basins excluding Central Valley
Water Resources Division, U.S. Geological Survey
1969, Water Data Report CA-68-1-1
The surface-water records for the 1968 water year for gaging stations, partial-record stations, and miscellaneous sites within California are given in this report. For convenience, also included are records for a few pertinent gaging stations in bordering States. The records were collected and computed by the Water Resources Division of...
Water Resources Data for California, 1968; Part 1: Surface Water Records; Volume 2: Northern Great Basin and Central Valley
Water Resources Division, U.S. Geological Survey
1969, Water Data Report CA-68-1-2
The surface-water records for the 1968 water year for gaging stations, partial-record stations, and miscellaneous sites within California are given in this report. For convenience, also included are records for a few pertinent gaging stations in bordering States. The records were collected and computed by the water Resources Division of...
Hydrogeologic data for the southwestern coastal river basins, Connecticut
Mendall P. Thomas, Robert B. Ryder, Chester E. Thomas Jr.
1969, Connecticut Water Resources Bulletin 18
This report presents hydrologic and geologic data collected by the U.S. Geological Survey during an investigation of water resources in the southwestern coastal river basins of Connecticut in cooperation with the Connecticut Water Resources Commission. These basins occupy about 394 square miles in Connecticut and 46 square miles in New York, including the towns...
Our changing continent
Water Resources Division, U.S. Geological Survey
1969, Report
Where were the land areas and oceans of the North American Continent one million years ago, compared to our present geography? Was North America always about the same size and shape as it is today? To answer these questions, we must construct maps of the lands and sea that existed...
