Hydrologic data for Block Island, Rhode Island

Abstract

This report was compiled as part of a study to assess the hydrogeology and the quality and quantity of fresh ground water on Block Island, Rhode Island. Hydrologic data were collected on Block Island during 1988-91. The data are presented in illustrations and tables. Data collected include precipitation, surfacewater, ground-water, lithologic, and well-construction and discharge information. Precipitation data include total monthly precipitation values from 11 rain gages and water-quality analyses of 14 precipitation samples from one station. Surfacewater data include water-level measurements at 12 ponds, waterquality data for five ponds, and field specific-conductance measurements at 56 surface-water sites (streams, ponds, and springs) . Ground-water data include water-level measurements at 159 wells, water-quality data at 150 wells, and field specificconductance data at 52 wells. Lithologic logs for 375 wells and test borings, and construction and location data for 570 wells, springs, and test borings are included. In addition, the data set contains data on water quality of water samples, collected by the Rhode Island Department of Health during 1976-91, from Fresh and Sands Ponds and from wells at the Block Island Water Company well field north of Sands Pond.