Computerized Information for Selecting Protected Streamflow

by Krishan P. Singh, Illinois State Water Survey, Champaign, IL, USA,

Document Type: Proceeding Paper

Part of: Hydraulics and Hydrology in the Small Computer Age


For developing criteria for protected flow (the flow below which water withdrawals for offstream uses are not permitted) for streams in a relatively hydrologically homogeneous region, the information on various flow parameters and their values modified because of various protected flow levels is needed. This information is used to assess the impacts on aquatic habitats and to define the availability of water for year-round demands such as municipal water supply and seasonal demands such as irrigation. A computer program has been developed and is operational for analyzing daily flow record at a gaging station.

Subject Headings: Water flow | Aquatic habitats | Water supply | Streamflow | Computer software | Flow patterns | Municipal water | Parameters (statistics)

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