The City of Middletown, New York, is to begin construction on several century-old dams to bring them up to new state standards, according to the city’s public works commissioner Jacob Tawil. 
The upgrades on three Shawangunk reservoir dams, to be performed by a joint venture between Servidone and Anthony Construction, cost around $3.8 million; a separate project on the Kinch reservoir dam, awarded to Colonnelli Brothers, costs another $1.5 million. 
These improvements will solidify the city’s dam system for another century, Tawil said. 
Main upgrades include replacing a concrete spillway, raising the core walls to the height of the dam, flattening the downstream slopes, replacing raw water supply valves, and installing new raw water metering vaults. …