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Page 793, results 19801 - 19825

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Flooding in northwestern Hillsborough and southern Pasco counties, Florida, in 1979
W. R. Murphy Jr., R. P. Evans, James K. Whalen
1984, Open-File Report 82-96
Heavy rainfall in the late spring and summer of 1979 caused severe flooding in northwestern Hillsborough and southern Pasco counties, including north Tampa. May 7-9 rainfall for some stations had a recurrence interval in excess of 100 years; the August and September rainfall total had a recurrence interval in excess...
Geomorphic domains and linear features on Landsat images, Circle quadrangle, Alaska
S. L. Simpson
1984, Open-File Report 83-170-E
A remote sensing study using Landsat images was undertaken as part of the Alaska Mineral Resource Assessment Program (AMRAP). Geomorphic domains A and B, identified on enhanced Landsat images, divide Circle quadrangle south of Tintina fault zone into two regional areas having major differences in surface characteristics. Domain A is...
Ground-water-quality data from the Powder River structural basin and adjacent areas, northeastern Wyoming
L. R. Larson, R. L. Daddow
1984, Open-File Report 83-939
Water-quality data for wells and springs in the Powder River basin in northeastern Wyoming are presented in three tables. The first table lists results of analyses of common constituents for 748 ground-water sites. The second table presents dissolved-trace-metal data for 220 ground-water sites. Radiochemical data are listed in the third...
Statistical summaries of streamflow data in Oregon; Volume 1, eastern Oregon
John Friday, S. J. Miller
1984, Open-File Report 84-454
Statistical summaries of streamflow data at 335 streamgaging sites are presented in this two volume report to aid in appraising the hydrology of river basins in Oregon. Records for 31 gaging stations were compiled into separate periods owing to changes in regulation during the period of data collection. The periods...
Preliminary map showing the difference between the potentiometric surfaces of the Aquia aquifer of April 1979 and September 1982 in southern Maryland
F. K. Mack, J. C. Wheeler, S. E. Curtin
1984, Open-File Report 83-930
A map was prepared that shows the net change in the potentiometric surface of the Aquia aquifer in southern Maryland between April 1979 and September 1983. During this period, the potentiometric surface declined (1) at least a few feet throughout the entire southern Maryland area, and (2) more than 10...
Land use and land cover digital data
Robin G. Fegeas, Robert W. Claire, Stephen C. Guptill, K. Eric Anderson, Cheryl A. Hallam
1983, Open-File Report 82-22
The discipline of cartography is undergoing a number of profound changesthat center on the emerging influence ofdigital manipulation and analysis ofdata for the preparation of cartographic materials and for use in geographic information systems. Operational requirements have led to the development by the USGS National Mapping Division of several documents...