From abstract: Channel-routing models were used to route hypothetical releases from reservoirs in the upper Tioga River basin, Pennsylvania. These releases were routed northward down the Tioga River to Lindley, Erwins, and Corning, New York; combined with flows routed down the Cohocton River from Campbell to Corning, New York; and then routed southeastward down the Chemung River from Corning to Chemung, New York. The models used to route the flows of Cohocton and Chemung Rivers accounted for bank-storage discharge and streamflow depletion by well pumpage. In general, 17 years of concurrent streamflow data were available for model calibration and verification.

Abstract: This report presents selected basic data collected during a study of the water resources of the Clarion River and Redbank Creek basins in northwestern Pennsylvania. Hydrologic information including data on aquifers, water levels, and yields is presented for 1,304 wells. Records for 51 springs are also given. The report contains 83 chemical analyses of water samples collected from 30 stream sites and 300 analyses of water from 196 wells and 43 springs. Also included are 103 trace-elements analyses. Monthly and annual means of ground-water levels for six observation wells are tabulated. Benthic invertebrate data from 136 stream sites are listed. Locations of data-collection sites are shown on 50 page-size reductions of 7.5-minute topographic quadrangle maps.

From introduction: This report presents the results of an investigation of the quality of water in the French Broad River at Marshall, N.C., that is based on data collected during the period 1958-77. Major objectives of the study were: (1) to define variations in water quality; (2) to determine the degree to which the quality of water in the river is affected by man's activities; and, (3) to identify past and present trends in the chemical quality of water in the river.

Abstract: Details of additions and modifications to a computer code described in an earlier report entitled "A model for calculating effects of liquid waste disposal in deep saline aquifers,: USGS WRI 76-61, NTIS-PB256 903/AS are documented. These additions and modifications include free water surface, vertical recharge, equilibrium controlled linear absorption and a first order irreversible rate reaction. These, plus additional modifications, make this model more adaptable to general hydrologic problems and those involving waste disposal with simple chemical reactions.

From introduction: This report contains geohydrologic and water-quality data, hydrologic testing methods, and preliminary interpretations related to the site area and it supplements a report in which the regional hydrogeologic regime was described (Mercer and Orr, 1977).

Abstract: Techniques are presented for estimating the magnitude and frequency of floods at ungaged sites on unregulated rural streams in New York, excluding Long Island. Discharge-frequency data and basin characteristics of 220 gaging stations in New York and adjacent states were used in multiple linear regression analysis to develop equations for floods that range in recurrence interval from 2 to 100 years. Separate equations were developed for northern, southeastern, and western regions of New York. Drainage area is the independent variable needed in all equations; other variables needed, depending on region, are main-channel slope, storage index, and mean annual precipitation. A method is given for obtaining improved discharge-frequency relationships qt gage sites by weighing log-Pearson Type III and regression estimates according to their variances. Basin characteristics, log-Pearson Type III statistics, and regression and weighted estimates of the discharge-frequency relationship are tabulated for the New York gaging stations used in the regression analysis.