A collection of short topical papers providing significant results of hydrologic studies by the U.S. Geological Survey, Department of the Interior, has been published as “Selected Papers in the Hydrologic Sciences, Volume 1” (Water‐Supply Paper 2262). Edited by Eric L. Meyer, “Selected Papers in the Hydrologic Sciences“ is a new journal‐type publication that will be a part of the existing U.S. Geological Survey Water‐Supply Paper series. The “journal” is aimed at meeting the widespread public and professional interest of the hydrologic community in timely results from hydrologic studies derived from federal research programs, federal‐state cooperative programs, and some work done on behalf of other federal agencies.This first volume, comprising eight papers, addresses a broad array of topics covering sediment chemistry, pesticides, toxic metals, and streamflow characteristics. Included are papers on a technique to measure oxygen in the root zone of saturated and unsaturated soils; measurement of surface runoff and collection of sediment samples from small areas; organic carbon in volcanic ash from Mount St. Helens, Washington; organochlorine pesticide and polychlorinated biphenyl in the Schuylkill River, Pennsylvania; interference of cadmium carbonate precipitation in the determination of cation exchange separation factors; confidence limtis for determining concentrations of tracer particles in sediment samples; determination of aquatic humic substances in natural water; and use of channel cross‐section properties for estimating streamflow characteristics.
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