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  • All fields: Geological
(1245 results)



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    • The mineral content of Illinois waters

    • 1908; Aquifers; Bartow, Edward, J.A. Udden, S.W. Parr, and George T. Palmer; ISWS B-4; Water -\- Composition; Water quality
    • The State Water Survey of Illinois began the investigation of the waters of the State in 1895. While the Survey has laid special stress on the determination of the character of the waters from a sanitary standpoint, it has also often been called...
    • Preliminary report on the ground-water resources of the Havana region in west central Illinois

    • 1965; Aquifer; Aquifers; Groundwater; Hydrogeology; ISWS COOP-3; Sankoty Sand aquifer; Walker, William H., Robert E. Bergstrom, and William C. Walton; Water quality
    • A large undeveloped ground-water reservoir underlies an area along the Illinois and Sangamon Rivers in west-central Illinois. The area is called the Havana region in this report.This report is based on data collected during the investigation and...
    • Fox Chain of Lakes investigation and water quality management plan

    • 1977; Bluff Lake (Upper Fox); Channel Lake; Fox Lake (Upper Fox); Grass Lake (Upper Fox); Hydrology; ISWS COOP-5; Kothandaraman, Veerasamy, Ralph L. Evans, Nani G. Bhowmik, John B. Stall, David L. Gross, Jerry A. Lineback, and Gary B. Dreher; Lake;...
    • This report is a cooperative project of the Illinois State Water Survey and StateGeological Survey. Part 1, prepared by the Geological Survey, discusses the geologic history and character of bottom sediments. Parts 2 and 3 were prepared by the...
    • Geology, hydrology, and water quality of the Cambrian and Ordovician systems in northern Illinois

    • 1985; Aquifer; Aquifers; Cambrian-Ordovician aquifer; Galena-Platteville aquifer; Geologic; Geology; Groundwater -\- Quality; Hydrogeology; Hydrology; ISWS COOP-10; Ironton-Galesville aquifer; Maquoketa Group; Visocky, Adrian P., Marvin G....
    • Cambrian and Ordovician strata provide much of the groundwater supplyfor approximately 250 municipalities and 150 industries in the northern halfof Illinois. This report represents the cooperative effort of the IllinoisState Water Survey, Illinois...
    • An initial evaluation of the impact of pesticides on groundwater in Illinois: report to the...

    • 1990; Agricultural chemicals -\- Environmental aspects; Chemicals in agriculture; Groundwater -\- Pollution; ISWS COOP-12; McKenna, Dennis P., Thomas J. Bicki, William S. Dey, Donald A. Keefer, Edward Mehnert, Samuel V. Panno, Chittaranjan Ray,...
    • In this report, the Illinois State Geological Survey (ISGS) and the Illinois State Water Survey (ISWS) have responded to the mandate of the Illinois Groundwater Protection Act that the Illinois Department of Energy and Natural Resources (IDENR)...
    • Pilot study: agricultural chemicals in rural, private wells in Illinois

    • 1992; Agricultural chemicals -\- Environmental aspects; Chemicals in agriculture; Drinking water -\- Contamination; Groundwater -\- Pollution; ISWS COOP-14; Nonpoint source pollution; Schock, Susan C., Edward Mehnert, Michael E. Caughey, Gary B....
    • In the Illinois Groundwater Protection Act of 1987 (PA 85-863), the state legislature mandated that the Illinois Department of Energy and Natural Resources (DENR) conduct an "ongoing program of basic and applied research relating to groundwater,"...
    • Sedimentation survey of Lake Decatur's Basin 6, Macon County, Illinois.

    • 2001; Bogner, William C.; ISWS CR 2001-07; Lake Decatur; Reservoir; Reservoir sedimentation; Sangamon River; Sedimentation analysis; Stream; Stream measurements
    • Sedimentation detracts from the use of any water supply lake by reducing lake depth and volume, with a reduction of reserve water supply capacity and possible burying of intake structures. Sedimentation of a reservoir is a natural process that can...
    • Sedimentation survey of Lake Decatur's Big and Sand Creek basins, Macon County, Illinois

    • 2002; Big Creek (Upper Sangamon); Bogner, William C.; ISWS CR 2002-09; Lake sediments -\- Measurement; Reservoir sedimentation; Sand Creek (Upper Sangamon); Stream
    • Sedimentation detracts from the use of any water-supply lake by reducing lake depth and volume, with a reduction of reserve water-supply capacity and possible burying of intake structures. Sedimentation of a reservoir is a natural process that can...
    • Evaluation of the Illinois Streamflow Gaging Network

    • 2003; ISWS CR 2003-05; Knapp, H. Vernon and Momcilo Markus; Stream gaging stations
    • The Illinois Streamflow Gaging Network has been operated by the U.S. Geological Survey (USGS) since the early 1900s. From its inception, the operation of the network has been maintained through a cooperative partnership between the USGS and state...

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