(ZAO Island, 36', 1981, 14-64-a) across Tributary of Salt Creek in Zao Island, in Valparaiso, Center Township, Porter County, IN. US30 W. 0.2 miles from jct with IN2 in Valparaiso, S. on Horseprairie Av. 0.1 miles to ZAO Island on the W. side of the road at 1050. (N41 27.537 W87 04.080) Photo 4-2-04.