Boisun gas processing plant is a complex engineering complex for processing 5 billion m3/year of natural gas produced at the «Mustakillikning 25 yilligi» gas field located in Surkhandarya region of the Republic of Uzbekistan. A backup water supply system from the Sherabad Main Canal (SMC) was envisaged for uninterrupted operation of the plant. The scope of work of ALTERRA TEAMS LLC for this project included the development of detailed design of cross regulator on the Sherabad main canal with a capacity of 150 m3/sec.