Changes in chloride concentration in water from municipal wells that tap aquifers in rocks of Cambrian and Ordovician age in northeastern Illinois, 1915-84. Water Resources Investigation

Technical Report · Tue Jan 01 04:00:00 EST 1991

OSTI ID:5562953

Balding, G O

In the late 1970's, the U.S. Geological Survey (USGS) initiated the Regional Aquifer-System Analysis (RASA) to study regional aquifer systems throughout the United States. The general goals of a RASA investigation are to evaluate each aquifer's water-supply potential and water quality, and, using computer models of the ground-water flow system, to provide a means for evaluating aquifer response to stresses placed on the flow system. The report describes the location, magnitude, and causes of the changes in chloride concentration in the aquifers in the Cambrian and Ordovician Systems in a six-county area of northeastern Illinois. The report includes stratigraphic columns, maps, and graphs that show the geology and hydrogeology of the study area and the changes in chloride concentration in water from wells that tap the aquifers in the Cambrian and Ordovician Systems. The geologic and hydrogeologic nomenclature used in the report is that used by Visocky and others (1985) and does not necessarily follow the usage of the USGS.

• Research Organization: Geological Survey, Urbana, IL (United States). Water Resources Div.
• OSTI ID: 5562953
• Report Number(s): PB-92-155613/XAB; USGS/WRI--90-4116
• Country of Publication: United States
• Language: English

Related Subjects

29 ENERGY PLANNING, POLICY, AND ECONOMY
290300 -- Energy Planning & Policy-- Environment
Health
& Safety
290400 -- Energy Planning & Policy-- Energy Resources
54 ENVIRONMENTAL SCIENCES
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
AQUIFERS
CAMBRIAN PERIOD
CHLORIDES
CHLORINE COMPOUNDS
COMPUTERIZED SIMULATION
DEVELOPED COUNTRIES
ECOLOGICAL CONCENTRATION
ENVIRONMENTAL QUALITY
GEOLOGIC AGES
GEOLOGY
HALIDES
HALOGEN COMPOUNDS
HYDROLOGY
ILLINOIS
MONITORING
NORTH AMERICA
ORDOVICIAN PERIOD
PALEOZOIC ERA
SIMULATION
STRATIGRAPHY
USA
WATER QUALITY
WATER SUPPLY
WATER WELLS
WELLS