Sec. 70. "Diffused surface water", for purposes of IC 14-25 through IC 14-29, means water that comes from falling rain or melting snow or ice and that:
(1) is diffused over the surface of the ground or that temporarily flows vagrantly on or over the surface of the ground as the natural elevations and depressions of the surface of the earth guide the water; and
(2) has no definite banks or channel.