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  • All fields: riprap
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    • riprap crew

    • riprap crew
    •  

    • Crew laying prefabricated, interlocking concrete slabs as the original riprap on the face of the dam. The protection didn't work and was later broken up and removed with the help of German prisoners-of-war from nearby prison camps. Replaced with...
    • Nebraska Studies
    • storage behind dam

    • storage behind dam
    •  

    • Early photo of Lake McConaughy as it begins to fill for the first time; note incomplete riprap on face of dam. Reservoir was holding about 175,000 acre-feet when photo was taken in 1941 (capacity was almost 2 million acre-feet).
    • Nebraska Studies
    • tetrahedrons on dam

    • tetrahedrons on dam
    •  

    • Central began a program of placing 800-lbs. tetrahedrons to protect the dam's face in the 1960s. The concrete 'jacks' were usually cabled together in pairs and were intended to supplement the rock from quarries in Wyoming that comprise the...
    • Nebraska Studies

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