Family trout fishing event April 8 at Summerset Park 3/28/2017 12:01:00 PM View Count 3412 INDIANOLA – A family trout fishing event will be held at Banner Lake South at Summerset Park, north of Indianola, April 8 from 11:30 a.m. – 1:30 p.m. The Iowa Department of Natural Resources will release 1,400 rainbow trout around noon.