73rd Governor's Fishing Opener: Here’s what to expect for the opener in OTC When midnight strikes on May 15, anglers will head out in earnest seeking walleye and pike. Both are abundant in Otter Tail County Lakes. 6:20 am, May 13, 2021 × Randin Olson hoists three walleye caught on Otter Tail Lake. Olson is the owner of Lock Jaw Guide Service in the Ottertail lakes area. Photo courtesy Erik Osberg If you’re an angler looking to part waters for the opener, May 15, you’d be hard pressed to find a better batch of waters than the 1,000-plus Otter Tail County calls their own.