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Welcome to the COHYST Website! This set of 26 slides will guide you through a discussion of the background, objectives, and status of Nebraska’s Cooperative Hydrology Study (COHYST: pronounced “co-heist”). Simply click through the slides and read the brief notes attached to each. For more detailed information about the technical aspects, contact the site webmaster, Rich Kern (402-471-2081), or the COHYST Technical Committee Chairman, Duane Woodward (308-385-6282).