The California Department of Fish and Wildlife has amended Lake and Streambed Alteration Agreement number 1600-2004-0433-R5, pursuant to Section 1602 of the Fish and Game Code to the Los Angeles County Flood Control District (District). The District proposes to continue activities and protocols related to channel maintenance. This does not involve any new activity or construction project, but rather reflects longstanding and ongoing maintenance activities required to protect downstream residences, businesses, and infrastructure from potential damage caused by floodwaters and debris. These activities include the use of backhoes, loaders, dump trucks, and other mechanical equipment to remove sediment, debris, trash, algae, and vegetation from the channel invert. Additional routine maintenance activities include conducting repairs and restorations to damaged invert access ramps and access roads, damaged low-flow diverters, curbs, channel inverts, spalling concrete, cracks, and joints; clearing of debris and sediment from inverts, sub drains, outlets, and lines; repairing or replacing vault lids and flap gates; repairing, restoring, and/or replacing channel wall fences, access roads, invert access ramps, gates, and ladder rungs; and clearing weep holes. The amendment involved the addition of 13 concrete-lined channel reaches to the list of maintained reaches and updating information on reaches already included in the Agreement.