Congress passes the Everglades National Park Protection and Expansion Act, incorporating Northeast Shark River Slough (east of the L-67 extension) under the jurisdiction of the National Park Service. This legislation also, among other things, authorizes Modified Water Deliveries to Everglades National Park (Mod-Waters Project), which consists of modifications to the CSF Project to improve water deliveries to Everglades National Park. It addresses the delivery of water the the Park through Shark River Slough, and extends east to the L-31N Canal down to the S-331 structure.