Whoever shall build, erect, continue or keep up any dam or other obstruction in any river or stream of water in the city and thereby raise an artificial pond, or produce stagnant waters, which shall be manifestly injurious to the public health and safety shall be guilty of an offense, and the court shall, moreover, order every such nuisance to be abated or removed.
(Neb. RS 28-1303) Penalty, see § 133.99