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Seminoe Arch Dam Structural Analysis

The 90-m high Seminoe arch dam is located on the North Platte River near Rawlins, Wyoming. The dam was built in 1939 and signs of AAR were detected in the early 1950s. Hatch Energy was contacted by USBR to perform a GROW3D stress analysis of the dam and assess the need for further action.

The results of the analysis were used by USBR in a risk-based safety assessment of the dam. The GROW3D model provided an excellent match to measured displacements. The model also replicated the crack patterns observed on the downstream face of the dam. As a result of this work, recommendations were made for remediation.

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