Browse Illinois State Water Survey (ISWS) by Author "Evans, R.L."

  • Lin, S.D.; Evans, R.L.; Beuscher, Davis B. (Illinois State Water Survey, 1978)
    During the 5-year period, October 1971 through September 1976, samples of water from 21 Illinois streams at 26 locations were collected monthly and examined to determine the concentration and genera of algae. Data have ...

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  • Lin, S.D.; Evans, R.L.; Beuscher, Davis B. (Illinois State Water Survey, 1975)
    During the period October 1971 to September 1973, samples of water from 35 Illinois streams at 41 locations were collected monthly and examined to determine the type, genera, and concentration of algae. Data for the 2-year ...

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  • Schnepper, D.H.; Neill, J.C.; Evans, R.L. (Illinois State Water Survey, 1973)

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