Cape Cod Aquifer, Cape Cod, Massachusetts

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Authors:Ryan, Barbara J.
Author Affiliations:Primary:
U. S. Geol. Surv., Providence, RI, United States
Volume Title:Journal of the New England Water Works Association
Source:Journal of the New England Water Works Association, 96(1), p.25-54. Publisher: New England Water Works Association, Boston, MA, United States. ISSN: 0028-4939
Publication Date:1982
Note:In English. 37 refs.; illus. incl. 5 tables, sects., block diags., sketch maps
Summary:Existing information on the Cape Cod Aquifer, Massachusetts, was compiled. As of 1978 over 100 municipal wells and 15,000 private wells were withdrawing water from the aquifer, which is composed of unconsolidated deposits of sand, gravel, silt, and clay. Bedrock ranges from 80 to 900 ft below sea level. The aquifer is unconfined except along the north shore between Bourne and Brewster, along the south shore, and at Chatham and Orleans. There is a saline-freshwater mixing zone where chloride concentrations range from 25 to 18,000 mg per liter. Natural recharge (average 18 inches per year) is from precipitation infiltrating into the sandy soils. Discharge is from wells, evapotranspiration, evaporation from the water table and seepage to rivers, marshes, and ocean. Water quality is generally good low in dissolved solids, soft, and mildly acidic. Dominant ions are Na and Cl. In some locations water is naturally high in Fe, Mn, hydrogen sulfide, and salt. Contamination has resulted from land-deposited wastewaters, solid waste disposal dumps, deicing salt storage areas, spills of chemicals and fuels, urban runoff, and saline-water intrusion. In 1978 6.4 billion gallons were pumped by public water systems for supplying 80% of the population, which in 1975 ranged from 127,000 in winter to 382 ,000 in summer. Alternative drinking water sources are desalination of saline water, transport from the mainland, and rainwater cisterns. (Cassar-FRC)
Subjects:Discharge; Economic geology; Environmental geology; Ground water; Hydrogeology; Pollution; Recharge; Salt-water intrusion; Surveys; Waste disposal; Water quality; Water resources; Barnstable County Massachusetts; Cape Cod; Massachusetts; United States; Cape Cod Aquifer
Record ID:1982041300
Copyright Information:GeoRef, Copyright 2018 American Geosciences Institute. Reference includes data from USGS product, Selected Water Resources Abstracts, Reston, VA, United States
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