This report contains hydrologic and geologic data collected and compiled as part of a water resources investigation of the Farmington River basin, Connecticut. The study was made by the U.S. Geological Survey in fiscal cooperation with the Connecticut Department of Environmental Protection. A companion report, Connecticut Water Resources Bulletin No. 29 (in preparation), contains the interpretation of ground-water, quality-of-water, and surfacewater data collected for the study.

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USGS1975

Hydrogeologic data for the lower Connecticut River basin, Connecticut

This report contains geologic, ground-water, and miscellaneous data on the quality of surface water collected for a water-resources inventory of the lower Connecticut River basin, Connecticut. The study was made by the U.S. Geological Survey in fiscal cooperation with the Connecticut Department of Environmental Protection. A companion report (Connecticut Water Resources Bulletin No. 31, in preparation) interprets the factual information presented here or otherwise collected for the study.

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USGS1974

Aeromagnetic map of Connecticut

No abstract available.

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USGS1974

Map showing thickness of principal clay unit, Windsor Locks quadrangle, Connecticut

Explore the source record for details and available documents.

Connecticut↗

USGS1974

Map showing thickness of principal clay unit, Hartford South Quadrangle, Connecticut

This map show the distribution and thickness of the principal clay unit. The clay unit consists of a thick, massive bed of relatively pure clay in some areas; in other areas it consists of discrete layers of clay alternating with layers of silt and very fine sand (varved clay). The upper layers of the clay unit commonly grade into a layer of silt and very fine sand. Small, isolated clay deposits not associated with the principal clay unit are not mapped.

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USGS1974

Map showing thickness of material overlying principal clay unit, Hartford South quadrangle, Connecticut

This map shows the distribution and thickness of material overlying the principal clay unit. The clay unit consists of a thick, massive bed of relatively pure clay in some areas; in other areas it consists of discrete layers of clay alternating with layers of silt and very fine sand (varved clay). The material overlying the principal clay unit commonly consists of sand. In places this sand is overlain by gravel or sand and gravel, and may also be overlain by fine materials not related to the principal clay unit. Locally the actual thickness of material overlying the principal clay unit may differ from the mapper value because the clay grades upward into the overlying material. The contact in these areas is poorly defined and is an estimate.

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USGS1974