Description

The SJRA Highlands Division delivers raw water to multiple municipal, industrial, and irrigation customers through the 24/7 operation of a canal system in East Harris County. Raw water from Lake Houston is delivered through the Main Canal and East Canal, which includes the Garth Road Siphon where the East Canal crosses under Garth Road. Raw water demands in the East Canal are also supplemented by SJRA’s East Canal Transfer Pump Station which transfers water from Coastal Water Authority’s canal to SJRA’s East Canal, upstream of the Garth Road Siphon.

The Garth Road Siphon was constructed in 1964 and has a single 48-inch reinforced concrete pipe without headwalls. Harris County widened Garth Road within the existing right-of-way in 2021, but the siphon was not replaced/extended. This siphon project will include removal and abandonment of the existing siphon pipe and replacement with new dual siphons, headwalls, water control gates, and appurtenances. The project is necessary due to the existing siphon age, structural condition, safety, reliability, and will provide redundancy for the canal system.