Section 1
SECTION 1. Any person, whether natural or juridical, who, prior to the promulgation of this Decree, may have introduced improvements on or reclaimed and occupied portions of rivers, creeks, esteros or drainage channels, is hereby directed to report to the Secretary of Public Works, Transportation and Communications, through the Director of Public Works, any and all such improvements, reclamations or encroachments and to renounce possession thereof, or demolish structures or improvements which tend to obstruct the flow of water through rivers, creeks, esteros and drainage channels, within ninety days from the effectivity of this Decree.