1986: The U.S. Army Corps of Engineers and the local sponsors, the Harris County Flood Control District and Galveston County, signed an agreement to jointly fund and construct the Clear Creek Federal Project. This agreement included 14 miles of channel conveyance improvements from FM 1959 to Clear Lake, so to mitigate these higher flows, the plans called for the construction of the second outlet channel and the construction of the gated structure to ensure the environmental and hydraulic status quos were maintained in Clear Lake.
1989-1991: U.S. Army Corps of Engineers constructs the gated structure.
1996-1997: U.S. Army Corps of Engineers constructs the second outlet channel and rehabilitates the gated structure.
1998: Operations and maintenance of the second outlet channel and gated structure are transferred from the U.S. Army Corps of Engineers to the Flood Control District.
1999: U.S. Army Corps of Engineers initiates a general reevaluation study of the Clear Creek Federal Project.
2003: To make certain that the gates will open or close during a power failure, a trailer mounted backup diesel powered generator with a quick connect was installed in the new onsite operations building.
2010: Post-Hurricane Ike improvements performed on the gated structure, including the installation of an all-weather concrete access road, removal of any potential jersey barriers that could block access due to storm surge, concrete power pole installation, removal and overhaul of all six gate motors and bevel gears, corrosion protection and paint on all 6 gates, replacement of lower and upper stem covers on all 6 gates, cleaning of stems on all 6 gates, and replacement of all sacrificial cathodic protection anodes.
2012: U.S. Army Corps of Engineers produces the 2012 General Reevaluation Report, the latest authorized iteration of the Federal Project. This version of the project no longer called for the same breadth of channel conveyance improvements, but the second outlet channel continues to reduce flood levels from watershed rainfall runoff.
2021: The Flood Control District performs an evaluation to assess the performance and benefits of the second outlet channel and gated structure to understand whether they are working as originally intended by the U.S. Army Corps of Engineers. The evaluation found that the channel and gated structure are operating as designed, and no physical or operational modifications are recommended.
After construction of the gated structure (completed 1991) and prior to the construction of the second outlet channel (completed 1997)