Report and geological survey. This report examines the ground water within the Wet Mountain Valley, Colorado. It includes maps of the area.

From introduction: The purpose of this report is to describe low-flow characteristics of streams in the lower Wisconsin River basin where streamflow data have been collected and to present equations for estimating low-flow characteristics and ungaged sites.

From introduction: This report describes some basic principles of hydrology as they apply to Martin County. The major land features of the county are described first, then the hydrologic cycle and the county's surface-water and ground-water resource. Specific problems associated with population growth and the county's development, such as saltwater intrusion and water use, are sited and sections have been included in the report to deal with these problems.

Purpose and scope: This reports presents the results of a 2-year investigation by the U.S. Geological Survey, in cooperation with the city of St. Petersburg, to evaluate geohydrologic conditions at a landfill in a coastal area. The report defines and describes the geologic and geohydrologic units underlying the landfill, and examines the controls these units exert on the flow and quality of surface and ground water in the area. The study increases the understanding of the geohydrologic aspects of landfill operations and will be helpful in the selection of future landfill sites in similar coastal areas.

Abstract: Unconsolidated strata of clay, silt, sand, and gravel of Late Cretaceous and pre-Wisconsin Pleistoscene ages lie between crystalline basement rocks (bedrock) of Precambrian (?) age and unconsolidated deposits of late Pleistocene (Wisconsin) and Holocene ages in Queens County, Long Island, N.Y., a borough of New York City. Data collected during a recent study of the hydrogeology of the county and updated records of earlier studies have been used to prepare contour maps that delineate the surfaces of the bedrock and the Upper Cretaceous and pre-Wisconsin Pleistocene deposits. The presence of diabase fragments, apparently from the Hudson Palisades, in a buried valley through the county suggests that the ancestral Hudson River was diverted into Queens County in Pleistocene.

From purpose and scope: The study was made to obtain baseline data for the island (Shelter Island) and as part of a larger study of shallow ground-water quality in Suffolk County, New York.

Report and geological survey. This report examines the effects of phosphate mining in Osceola National Forest, a 245-square mile area in Columbia and Baker Counties, Florida. It includes maps, graphs, and tables.

Report discussing the probable impact of urban development on the magnitude and frequency of flooding in the lower reaches of the Walnut Creek basin. (from Abstract)