From introduction: The purpose of this report is to present irrigation water-use data for selected farms and to show how these data are used to estimate total water use for irrigating various crops in southwest Florida. The study area includes all of the Southwest Florida Water Management District and is about 10,000 miles in size (figure 1). The initial emphasis on benchmark farm locations was in Hillsborough, Manatee, and Polk Counties. As the program continues, new farms are being added in surrounding counties (figure 2).

From introduction: The purpose of this report is to present the magnitude and types of nonpoint discharges that affect the water quality of Steiner Branch.

This is a report on estimating peak discharge, volume of runoff, and time distribution of runoff in response to rainfall required in water resources management.

From purpose of study: In January 1980, the u.s. Environmental Protection Agency (EPA) recommended that a ground-water monitoring program for organic constituents be started at the INEL. In response to this recommendation, DOE requested the U.S. Geological Survey to undertake such a program. The purpose of the study was to determine the distribution and extent of organic constituents in the ground water beneath the INEL.

From abstract: "In the Yampa River basin, Colorado-Wyoming, 35 major reservoirs and 2 transmountain diversion have been proposed to provide additional water for increasing uses. A multireservoir-flow computer model was used to simulate effects on streamflow of five potential options--one representing historical conditions and four representing various degrees of reservoir and transmountain-diversion development." It contains maps and tables.

Abstract: A flowing artesian well tapping the Floridan aquifer at Chekika Hammock State Park, Dade County, Florida, has been contaminating the overlying Biscayne aquifer with saline water since 1944. The contaminating plume extends approximately 7 miles downstream and southeast of the well and ranges in width from 1 to 2 miles. The area of contamination is approximately 12 square miles. The primary contaminating chemical constituents are chloride, sodium, and sulfate ions.