(3) No watercraft shall be operated at speed greater than is reasonable and prudent for the existing conditions and having full regard for both the actual and potential hazards at the time. Speed shall be restricted as is necessary to avoid colliding with any person, property, or natural resource which is in, on, or entering the water of any lake.

(4) Whenever the waters of Fish Lake shall reach or exceed 892.00 feet above sea level, as measured by the water level gauge set by the city, the city administrator or his designee may, at his discretion, upon notifying the county sheriff, impose a slow-no wake speed on the lake. Such restriction shall become effective upon a date specified by the city administrator or his designee and shall remain in effect until the water level for the lake has receded to below this level. The city shall make every effort toinform the public of such restriction, including, but not limited to, notification to the city's official newspaper, posting of the restriction at all public lake access points prior to and during the time such restriction is in place, and posting of the restriction at the city hall. A violation of such restriction shall be a violation of this article.