Mo. Rev. Stat. § 306.165
Each water patrol officer appointed by the Missouri state water patrol and each of such other employees as may be designated by the patrol, before entering upon his or her duties, shall take and subscribe an oath of office to perform all duties faithfully and impartially, and shall be given a certificate of appointment, a copy of which shall be filed with the secretary of state, granting all the powers of a peace officer to enforce all laws of this state, upon all of the following:
(7) All premises leased or owned or under control of the Missouri state water patrol.
Each water patrol officer may board any watercraft at any time, with probable cause, for the purpose of making any inspection necessary to determine compliance with the provisions of this chapter. Each water patrol officer may arrest on view and without a warrant any person he or she sees violating or who such patrol officer has reasonable grounds to believe has violated any law of this state, upon any water or land area subject to his or her jurisdiction as provided in this section or may arrest anyone violating any law in his or her presence throughout the state. Each water patrol officer, while investigating an accident or crime that was originally committed within such patrol officer's jurisdiction, as set forth in this section, may arrest any person who he or she has probable cause to believe has committed such crime, even if the suspect is currently out of the water patrol's jurisdiction. Water patrol officers, if practicable, shall notify the sheriff or the police department prior to making an arrest within their respective county or city. Each water patrol officer shall comply with the training and certification provisions of chapter 590, RSMo.
(L. 1963 p. 424 §1, A.L. 1971 S.B. 2, A.L. 1977 S.B. 194, A.L. 1985 H.B. 280, et al., A.L. 1989 S.B. 135, A.L. 2001 H.B. 732 merged with S.B. 443, A.L. 2004 S.B. 920)
CROSS REFERENCE:
Scholarships or grants for disabled personnel injured or survivors of personnel killed in the line of duty, RSMo 173.260