"This report presents the hydraulic and chemical data collected at a deep-well waste-injection system near Pensacola, Florida." It includes maps, graphs, and tables.

Abstract: The three lakes investigated gain water- from adjoining water-table aquifer and lose water to Floridan aquifer by downward leakage. Net seepage (net exchange of water between lake and aquifers) can be estimated by equation S = AX + BY, where S is net seepage, X represents hydraulic gradient between lake and water-table aquifer, A is lumped parameter representing effect of hydaulic conductivity and cross-sectional area of materials in flow section of water-table aquifer, Y is head difference between lake level and potentiometric surface of Floridan aquifer, and B is lumped parameter representing effect of hydraulic conductivity, area, and thickness of materials between lake bottom and Floridan aquifer. If values of S, X, and Y are available for two contrasting water-level conditions, coefficients A and B are determinable by solution of two simultaneous equations. If the relation between lake- and ground-water level is same on all sides of the lake with regard to each aquifer and if X and Y are truly representative of these relations, then X and Y terms of equation provide valid estimates of inflow to lake from water-table aquifer and outflow from lake to Floridan aquifer.

From purpose and scope: This report presents those results of the investigation which pertain to the hydrogeology and availability and quality of water from the sand-and-gravel aquifer. It discusses the hydrogeologic characteristics, hydraulic properties, potential yield, and water quality of the aquifer.

The following documents are three maps on the stratigraphy between Hernando and Polk Counties, Florida. These maps are in relation to document USGS Bulletin 1074, "Stratigraphy of the Area Between Hernando and Hardee Counties, Florida".

From introduction: The purpose of this study was to determine the distance the tide-driven saline water from the ocean traveled upstream and to define the specific-conductance and chloronity gradients in the lower reaches of the Altamaha, Satilla, and St. Marys Rivers during the high spring tide and low-flow event.

Abstract: Kissimmee River structures S-65E, S-65D, and S-65B were reproduced in a 1:20 scale model in order to study ways of eliminating scour of the downstream riprap blankets by means of structural modifications of operating procedures.

Abstract: "Fish, waterfowl and wading birds, and aquatic mammal populations on Lake Conway were surveyed for 1 year after the introduction of the herbivorous fish, white amur (Ctenopharyngodon idella). Low water levels reduced littoral zone area, which lead to stunted panfish and poorer condition of largemouth bass. Vegetated samples supported more diverse fish populations than beach sites. White amur and migratory waterfowl consumed the same plant foods; continued reduction of submerged plants by white amur may adversely affect overwintering waterfowl populations. Aquatic mammals were influenced by removal of vegetation due to shoreline development."

This report presents the results of a study of leached-zone material in overburden dumps at international Minerals and Chemical Corporation's Peace valley mine and Swift and Company's Varn mine.

Report detailing the history and biological aspects of the pygmy seahorse, including its sex ratio, breeding season, growth patterns, and more.

This report presents survey findings for the Green Swamp in Florida. It includes maps, graphs, and tables.

Report issued by the U.S. Bureau of Mines over magnetic surveys conducted on the Florida peninsula. Measurements, methods, and instrumentation used for the survey are presented. Tables and maps are included in this report.

From Abstract: "The mineral constituents of churn drill cuttings from a well through the Bone Valley formation and into the Hawthorn formation were determined. The weight percent of each mineral is given, as well as a description of the samples and the methods used."

This model evaluates the recently-developed well field in Cypress Creek, Florida. It includes maps and graphs.

From abstract: "This report is a survey of present and potential production of monazite from part of the Maryland-Florida section of the Atlantic Coastal Plain."

Report on state laws regarding performance-enhancing drugs for show and race horses in California, Florida, Kentucky, Louisiana, New York, Oklahoma, and Texas.

From introduction: This report explains how landfills can affect ground-water resources in a coastal environment. The report defines solid waste and briefly describes the four common methods for its disposal. The landfill method used in coastal west-central Florida is described in detail. It also presents hydrologic and geologic factors to be considered when locating landfills in a coastal environment and describes how to plan a water-quality monitoring program at a landfill site. Examples from other studies of the impact of landfills on ground water in coastal areas of west-central Florida are included.

On January 14, 2009, the Navy announced that it wants to transfer one of its nuclear-powered aircraft carriers (CVNs) to the Navy home port at Mayport, FL, known formally as Naval Station (NAVSTA) Mayport. The Navy's proposed FY2010 budget requests $46.3 million in Military Construction (MilCon) funding for channel dredging at Mayport. The Navy states that a key reason it wants to transfer a CVN to Mayport is to hedge against the risk of a catastrophic event that could damage the Navy's CVN homeporting facilities at Norfolk, VA, and nearby Newport News, VA. This report discusses potential questions for Congress to consider related to budget appropriations for such a transfer, the potential negative economic effects that a CVN transfer would have on the local homeport, and the other general questions regarding the Navy.

This report provides background information and issues for Congress on the Navy's proposal to homeport a nuclear-powered aircraft carrier (CVN) at Mayport, FL. Transferring a CVN from Norfolk, VA, to Mayport would shift from Norfolk to Mayport the local economic activity associated with homeporting a CVN, which some sources estimate as being worth hundreds of millions of dollars per year.

This report provides background information and issues for Congress on the Navy's desire to homeport a nuclear-powered aircraft carrier (CVN) at Mayport, FL. Prior to the submission of the FY2013 budget, Navy plans called for having Mayport ready to homeport a CVN in 2019.

From purposes and scope: The purposes of this investigation are to make a qualitative assessment of the effects on water quality of pumping water into the conservation areas, and specifically to evaluate the uptake by sediment and biota of nitrogen, phosphorus, and selected trace elements contained in the water.

A report regarding the Northwestern Florida Ecological Characterization study, the purpose of which is to compile existing information about the biological, social, and physical sciences for the gulf coastal counties of Florida from Escambia County to Hernando County.

From foreword: The results of an engineering study directed toward the evaluation and selection of a nuclear reactor system designed to produce electricity and furnish steam to a water desalination plant in the Florida Keys are given in this report.

Report discussing studies of millisite and pseudowavellite, which were "locally abundant in the leached zone of the highly phosphatic Bone Valley formation in west-central Florida." Studies include optical determinations and x-ray studies.

From introduction: Recognizing the need for comprehensive information about these waters of variable quality, the U.S. Geological Survey, in cooperation with the Southwest Florida Water Management District, investigated their character and distribution in the Mansota and lower Peace Basins (fig. 1). This report presents the results of the study. Principal objectives were to: (1) develop a better understanding of areal water-quality variations, and (2) relate the information developed to the extant concepts of the areal geohydrologic system.