Potentiometric Surface of the Lower Patapsco Aquifer in Southern Maryland, September 1995
Stephen E. Curtin, David C. Andreasen, Frederick K. Mack
1996, Open-File Report 96-623
A map showing the potentiometric surface of the lower Patapsco aquifer in the Patapsco Formation of Cretaceous age in southern Maryland during September 1995 was prepared from water-level measurements in 69 wells. The potentiometric surface was 87 feet above sea level near the northwestern boundary and outcrop area of the...
The difference between the potentiometric surfaces of the Aquia aquifer of September 1982 and September 1995 in southern Maryland
Stephen E. Curtin, David C. Andreasen, Frederick K. Mack
1996, Open-File Report 96-624
A map showing the net change in the potentiometric surface of the Aquia aquifer in the Aquia Formation of Paleocene age in southern Maryland was based on water levels measured in 66 wells from September 1982 to September 1995 and shows that the decline of the potentiometric surface during the...
Offshore gas hydrate sample database with an overview and preliminary analysis
James S. Booth, Mary M. Rowe, Kathleen M. Fisher
1996, Open-File Report 96-272
Synopsis -- A database of offshore gas hydrate samples was constructed from published observations and measurements. More than 90 samples from 15 distinct regions are represented in 13 data categories. This database has permitted preliminary description of gas hydrate (chiefly methane hydrate) tendencies and associations with respect to their geological...
Wetland and peat resource map of the Sandown 7.5-minute quadrangle, New Hampshire
J.C. Jackson, C. C. Cameron
1996, Open-File Report 96-255
The difference between the potentiometric surfaces of the Magothy Aquifer of September 1975 and September 1995 in southern Maryland
Stephen E. Curtin, David C. Andreasen, Frederick K. Mack
1996, Open-File Report 96-625
A map showing the net change in the poentiometric surface of the Magothy aquifer in the Magothy Formation of Cretaceous age in southern Maryland from September 1975 to September 1995 was based on water-level measurements in 67 wells. The map shows that the decline of the potentiometric surface during...
Potentiometric Surface of the Magothy Aquifer in Southern Maryland, September 1995
Stephen E. Curtin, David C. Andreasen, Frederick K. Mack
1996, Open-File Report 96-621
A map showing the potentiometric surface of the Magothy aquifer in the Magothy Formation of Cretaceous age in southern Maryland during September 1995 was prepared from water-level measurements in 92 wells. The potentiometric surface was highest near the northwestern boundaryand outcrop area of the aquifer in...
Potentiometric Surface of the Upper Patapsco Aquifer in Southern Maryland, September 1995
Stephen E. Curtin, David C. Andreasen, Frederick K. Mack
1996, Open-File Report 96-622
A map showing the potentiometric surface of the upper Patapsco aquifer in the Patapsco Formation of Cretaceous age in southern Maryland during September 1995 was prepared from water-level measurements in 42 wells. The potentiometric surface was nearly 120 feet above sea level near the northwestern boundary and outcrop area of...
Alaska resource data file: Demarcation Point quadrangle
John S. Kelley
1996, Open-File Report 96-678
No abstract available....
Report on the U.S. Geological Survey's evaluation program for standard reference samples distributed in April 1996 : T-139 (trace constituents), T-141 (trace constituents), M-138 (trace constituents), N-49 (nutrient constituents), N-50 (nutrient constituents), P-26 (low ionic strength constituents) and Hg-22 (Mercury)
J.W. Farrar, H.K. Long
1996, Open-File Report 96-436
Geochemical data from the Payette National Forest and contiguous areas, Idaho
R. T. Hopkins Jr., J. M. Motooka, J. B. McHugh, K. C. Watts Jr., H. D. King, H. N. Barton
1996, Open-File Report 96-535
Analytical results and sample locality maps of rock samples from the Stuyahok area, part of Holy Cross A-4 and A-5 quadrangles, Alaska
W. J. Keith, Marti L. Miller, E. A. Bailey, T. K. Bundtzen, D P. Bickerstaff
1996, Open-File Report 96-505-B
Water-quality assessment of the Trinity River Basin, Texas - Nutrients in two coastal prairie streams draining agricultural areas, 1994-95
Larry F. Land
1996, Open-File Report 96-558
In 1991, the U.S. Geological Survey (USGS) began nationwide implementation of the National Water-Quality Assessment (NAWQA) Program. Long-term goals of NAWQA are to describe the status of and trends in the quality of a large, representative part of the Nation?s surface- and ground-water resources and to provide a sound, scientific...
Erosion and deposition at the riffle-pool scale in gravel-bed streams, Ozark Plateaus, Missouri and Arkansas, 1990-95
R.A. McKenney, R. B. Jacobson
1996, Open-File Report 96-655-A
Selected hydrogeologic data from the Cedar Rapids Area, Benton and Linn counties, Iowa, October 1992 through March 1996
D.J. Schnoebelen, P.M. Schulmeyer
1996, Open-File Report 96-471
The city of Cedar Rapids, Iowa, obtains its water supply from shallow wells screened in the alluvial aquifer along the Cedar River. A cooperative study between the city of Cedar Rapids, Iowa, and the U.S. Geological Survey was started in March 1992 to assess the water quality and water quantity...
Quality-assurance plan and field methods for quality-of-water activities, U.S. Geological Survey, Idaho National Engineering Laboratory, Idaho
L. J. Mann
1996, Open-File Report 96-615
Hydrologic data for Carson and Antelope Valleys, Douglas County, Nevada, and Alpine and Mono Counties, California, 1981-94
K.A. Mello
1996, Open-File Report 96-464
Debris flows and landslides resulting from the June 27, 1995, storm on the North Fork of the Moormons River, Shenandoah National Park, Virginia
B. A. Morgan, G. F. Wieczorek
1996, Open-File Report 96-503
No abstract available....
Analytical results and sample locality maps of stream-sediment, panned concentrate, stream-water, and soil samples from the Stuyahok study area, part of Holy Cross A-4 and A-5 quadrangles, Alaska
E. A. Bailey, W. J. Keith, D P. Bickerstaff, David Dempsey, Marti L. Miller
1996, Open-File Report 96-505-C
Analytical results, sample locations, and other information for stream-sediment, soil, heavy-mineral-concentrate, and rock samples used in mineral resource studies of Coronado National Forest and adjacent areas, southeastern Arizona and southwestern New Mexico
G.A. Nowlan, M.A. Chaffee
1996, Open-File Report 95-615-B
No abstract available....
Selected water-quality data for the lower Mississippi River, Bonnet Carre Spillway, and Lake Pontchartrain area, Louisiana, April through June 1994 and 1974-84
D.K. Demcheck, C.R. Garrison, B.D. McGee
1996, Open-File Report 96-652-A
Toward assessing the seismic risk associated with blind faults, San Francisco Bay region, California
A. S. Jayko, S.D. Lewis
1996, Open-File Report 96-267
Estimation of pier scour and channel stability for highway crossings of the Red River in Louisiana
J. J. Gilbert, P. A. Ensminger
1996, Open-File Report 96-574
Reconnaissance of ground-water quality in the Manati Quadrangle, Puerto Rico, August-November 1992
C. E. Conde-Costas, G. A. Rodriguez-Rodriguez
1996, Open-File Report 96-628
Determination of atrazine and its major degradation products in soil pore water by solid-phase extraction, chemical derivatization, and gas chromatography/mass spectrometry
D.S. Carter
1996, Open-File Report 96-459
This report describes a method for the determination of atrazine, desethylatrazine, deisopropylatrazine, didealkylatrazine, and hydroxyatrazine from soil pore waters by use of solid-phase extractionfollowed by chemical derivatization and gas chromatography/mass spectrometry. The analytes are isolated from the pore-water matrix byextraction onto a graphitized carbon-black cartridge. The cartridge...
Aftermath of Hurricane Fran in North Carolina; preliminary data on flooding and water quality
J. D. Bales, C.J. Childress
1996, Open-File Report 96-499
