Emerald No. 1 Main Valley Eastern

About Emerald No. 1 Main Valley Eastern

Emerald No. 1 Main Valley Eastern is a dam in Greene, Pennsylvania. The dam is owned by Emerald Contura Llc (private). It impounds the Tr Smith Creek.

The dam stands 310 feet tall and stretches 2,010 feet across, has a maximum storage capacity of 2,734 acre-feet, and collects water from a drainage area of 0 square miles.

This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 11/18/2019.

At 310 feet, this dam is taller than 99% of all dams in the United States.

Living Downstream

If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Pennsylvania dam safety program can provide more specific information about emergency planning for this structure.

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