Requiring, by April 1, 2028, a municipality to inventory and prioritize all existing open drainage inlets in the municipality and construct or install certain improvements on a new or existing open drainage inlet within the municipality; requiring, in each of fiscal years 2029 through 2031, $250,000 of the money appropriated to the comprehensive flood management grant program within the Department of the Environment be used to provide matching funds to assist with certain costs; etc.