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POL Government Elected Officials Auditor Griffin-Valade Charter, Code & Policies City Code & Charter Online Code & Charter Title 19 Chapter 19.16  Rules And Regulations
19.16.370 Recovery of Bodies or Evidence from River.

A.  Whenever it appears to the Harbor Master that any automobile, boat, or other thing has sunk within thePortland harbor, and he shall have reason to believe that a human body may be contained therein, he/she hereby is authorized to use such means for the removal or recovery of same as may appear reasonable and necessary.
 
B.  Whenever any gun or other thing has been thrown into or has entered the waters within the City and the same appears to be necessary evidence in any investigation, criminal or civil, he/she hereby is authorized to use such means as may be needed to recover same.