PROJECT PROFILE WJE www.wje.com Upper Highline Dam Dam Stability and Seepage Evaluation and Mitigation | Mesa County, CO CLIENT Colorado Parks and Wildlife and John P . Clark, P .E. BACKGROUND Upper Highline Dam is located on a tributary of Mack Wash in Mesa County, Colorado. Highline Lake, formed by Upper Highline Dam, is used for recreational purposes. Highline Lake State Park is owned by The Colorado Division of Parks and Wildlife (CPW). Construction of the zoned earth-fill dam was completed in 1967. The Colorado Division of Water Resources - Office of the State Engineer (SEO) classifies the structure as a high- hazard dam. In 1989, CPW began operating a lon

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