Mercury in eggs of aquatic birds, Lake St. Clair-1973
Rey C. Stendell, H. M. Ohlendorf, Erwin E. Klaas, J. B. Elder
1976, Pesticides Monitoring Journal (10) 7-9
Eggs from four species of aquatic birds inhabiting waterways of the Lake St. Clair region were collected in 1973 and analyzed for mercury. Species analyzed were mallard ducks (Anas platyrhynchos), common terns (Sterna hirundo), black-crowned night herons (Nycticorax nycticorax), and great egrets (Casmerodius albus). Mallard eggs contained relatively low residue...
Mapping wetlands on beaver flowages with 35-mm photography
R.E. Kirby
1976, Canadian Field-Naturalist (90) 423-431
Beaver flowages and associated wetlands on the Chippewa National Forest, north-central Minnesota, were photographed from the ground and from the open side window of a small high-wing monoplane. The 35-mm High Speed Ektachrome transparencies obtained were used to map the cover-type associations visible on the aerial photographs. Nearly vertical aerial...
Lead in tissues of mallard ducks dosed with two types of lead shot
M. T. Finley, M. P. Dieter, L. N. Locke
1976, Bulletin of Environmental Contamination and Toxicology (16) 261-269
Mallard ducks (Anas platyrhynchos) were sacrificed one month after ingesting one number 4 all-lead shot or one number 4 lead-iron shot. Livers, kidneys, blood, wingbones, and eggs were analyzed for lead by atomic absorption. Necropsy of sacrificed ducks failed to reveal any of the tissue lesions usually associated with lead...
White-tailed deer migration and its role in wolf predation
R.L. Hoskinson, L.D. Mech
1976, Journal of Wildlife Management (40) 429-441
Seventeen white-tailed deer (Odocoileus virginianus) were radio-tagged in winter yards and tracked for up to 17 months each (881 locations) from January 1973 through August 1974 in the central Superior National Forest of NE Minnesota following a drastic decline in deer numbers. Ten vyolves (Canis lupus) from 7 packs in...
Sublethal effects of chronic lead ingestion in mallard ducks
M. T. Finley, M. P. Dieter, L. N. Locke
1976, Journal of Toxicology and Environmental Health (1) 929-937
Mallard drakes (Anas platyrhynchos) fed 1, 5, or 25 ppm lead nitrate were bled and sacrificed at 3‐wk intervals. No mortality occurred, and the pathologic lesions usually associated with lead poisoning were not found. Changes in hematocrit and hemoglobin concentration did not occur. After 3 wk ducks fed...
Comments on recent canvasback habitat trends and threats on Chesapeake Bay
Matthew C. Perry
1976, Book chapter, Transactions of the Canvasback Workshop : April 6-7, 1976, Ramada Inn, Jamestown, North Dakota
During the last 22 years, the North American winter population of canvasbacks has fluctuated from 481,000 in 1955 to 179,000 in 1972. The Chesapeake Bay population has averaged 33 percent of the North American population and 64 percent of the Atlantic Flyway population. In Maryland, significant annual fluctuations...
Trumpeter swan, Cygnus buccinator Richardson
W.E. Banko, A.W. Schorger
Ralph S. Palmer, editor(s)
1976, Book chapter, Handbook of North American Birds 2: Waterfowl, Part 1
Distribution and abundance of non-waterfowl avifauna of the lower Columbia River Basin
J. M. Scott, R.T. Reynolds
J.E. Tabor, editor(s)
1976, Book chapter, Inventory of Riparian Habitats and Associated Wildlife along the Columbia River. Volume 2A.
Land subsidence and aquifer-system compaction in the San Jacinto Valley, Riverside County, California - A progress report
Ben Elder Lofgren
1976, Journal of Research of the U.S. Geological Survey (4) 9-18
Widespread subsidence continues in the San Jacinto structural trough as water levels continue to decline. Subsidence is due principally to the compaction of water-bearing deposits as effective stresses are increased by artesian-head decline. Other possible contributory causes of subsidence are (1) local or regional tectonic adjustments and graben downfaulting, (2)...
Halogen contents of igneous minerals as indicators of magmatic evolution of rocks associated with the Ray porphyry copper deposit, Arizona
Norman G. Banks
1976, Journal of Research of the U.S. Geological Survey (4) 91-117
The contents of Cl, F, and H2O+ (calculated) in some hydrous igneous minerals in intrusive rocks of Laramide age (70-60 m.y.) near Ray, Ariz., appear to be related to the age and the chemistry of the whole-rock samples. Apatite and biotite in younger, more silicic rocks contain more F but...
Stratigraphic and hydrologic relationship of the Piney Point aquifer and the Alloway Clay Member of the Kirkwood Formation in New Jersey
Bronius Nemickas, Louis D. Carswell
1976, Journal of Research of the U.S. Geological Survey (4) 1-7
Coarse quartzose (clastic) sediments of middle and late Eocene age in the subsurface of southern New Jersey are identified in this report as the Piney Point aquifer. The sediments are as thick as 220 feet (67 metres) and form a freshwater aquifer which is laterally continuous with the Piney Point...
Large sand waves on the Atlantic Outer Continental Shelf around Wilmington Canyon, off Eastern United States
H.J. Knebel, D. W. Folger
1976, Marine Geology (22) M7-M15
New seismic-reflection data show that large sand waves near the head of Wilmington Canyon on the Atlantic Outer Continental Shelf have a spacing of 100-650 m and a relief of 2-9 m. The bedforms trend northwest and are asymmetrical, the steeper slopes being toward the south or west. Vibracore sediments...
Recent limnological changes in southern Kootenay Lake, British Columbia
James E. Cloern
1976, Canadian Journal of Zoology (54) 1571-1578
n response to a significant abatement of phosphate loading and the construction of a dam on its major inflow (the Kootenay River), southern Kootenay Lake experienced a number of limnological changes between 1969 and 1974. Water temperatures in 1974–1975 were similar to those previously reported for 1966–1969. However, water transparency...
Effects of urbanization on flood characteristics in Nashville-Davidson County, Tennessee
Herman C. Wibben
1976, Water-Resources Investigations Report 76-121
Streamflow data from 14 basins in Davidson County, Tenn., were extended in time by use of a digital model of the hydrologic system. The basins ranged in size from 1.58 to 64.0 square miles and ranged in extent of manmade impervious cover from 3 to 37 percent. The flood-frequency characteristics...
Availability of ground water in Seminole County and vicinity, Florida
C. H. Tibbals
1976, Water-Resources Investigations Report 76-97
No abstract available....
Floods in Pennsylvania: A manual for estimation of their magnitude and frequency
Herbert N. Flippo Jr.
1976, Open-File Report 76-391
Regression equations are provided for estimation of flood magnitude and frequency on unregulated and unurbanized streams in Pennsylvania. Frequency-discharge profiles are shown for regulated reaches on eleven major streams. These regression equations and discharge profiles enable the design engineer to estimate flood-frequency characteristics for almost all streams that drain more...
Preimpoundment water quality of Raystown Branch Juniata River and six tributary streams, south-central Pennsylvania
Donald R. Williams
1976, Water-Resources Investigations Report 76-57
The Raystown Branch Juniata River watershed, which is the main water source for Raystown Lake, is a 960-square-mile (2,490 square kilometres) drainage basin in south-central Pennsylvania. Preimpoundment water-quality data were collected on the Raystown Branch and six tributary st.reams in the basin. Specific conductance values varied inversely with water discharge....
A brief hydrologic appraisal of the July 3-4, 1975, flash flood in Las Vegas Valley, Nevada
T. L. Katzer, Patrick A. Glancy, Lynn Harmsen
1976, Open-File Report 76-100
Heavy thunderstorm precipitation on the afternoon of July 3, 1975, between metropolitan Las Vegas and the mountains to the south, west, and north, caused flash flooding in the city area. Total storm precipitation equaled or exceeded 3 inches (76 mm) in some areas. The total storm yield on the area...
Land use and land cover and associated maps for Monterey, California
Water Resources Division, U.S. Geological Survey
1976, Open-File Report 76-44
Flow from small watersheds adjacent to the study reach of the Gila River Phreatophyte Project, Arizona
Durl Edward Burkham
1976, Professional Paper 655-I
An environmental assessment of impacts of coal development on the water resources of the Yampa River basin, Colorado and Wyoming; Phase II work plan
Timothy Doak Steele, Ivan C. James II, Daniel P. Bauer
1976, Open-File Report 76-368
Shaded relief map of the Diacria Quadrangle of Mars
Water Resources Division, U.S. Geological Survey
1976, IMAP 989
Water resources data for New Mexico, water year 1975
Water Resources Division, U.S. Geological Survey
1976, Water Data Report NM-75-1
Water resources data for the 1975 water year for New Mexico consist of records of discharge and water quality of streams; stage, contents and water quality of lakes and reservoirs; and water levels and water quality in wells and springs. This report contains discharge records for 201 gaging stations; stage...
Hydrologic data for urban studies in the San Antonio, Texas metropolitan area, 1976
Lynn Harmsen
1976, Open-File Report 78-164
Hydrologic investigations of urban watersheds in Texas were begun by the U.S. Geological Survey in 1954. These studies are now in progress in Austin, Dallas, Dallas County, Fort Worth, Houston, and San Antonio.The Geological Survey, in cooperation with the Texas Department of Water Resources, expanded the existing streamflow network in...
Application of the U.S. Geological Survey rainfall-runoff simulation model to improve flood-frequency estimates on small Tennessee streams
Herman C. Wibben
1976, Water-Resources Investigations Report 76-120
The U.S. Geological Survey rainfall-runoff simulation model was used in conjunction with National Weather Service climatological data to improve flood-frequency estimates for 52 small drainage basins in Tennessee. The basins range in size from 0.17 to 64 square miles (0.44 to 166 square kilometers) and are distributed throughout the State....
