Fishing Sweetwater Lake in Day County, South Dakota

• Overview

  Sweetwater Lake sits in Day County, out in South Dakota. The surface lies 1,736 feet up. Roughly 212 acres: a morning covers one end, an afternoon the other. The margin runs to about 4.4 miles in total. Our Day County list holds plenty of bigger water. You are 20 miles from Groton. The big place round here is Sioux Falls, 128 miles distant. You are close to a county edge here; who manages the access can change within a short drive.

• Where to Fish on Sweetwater Lake

  Depth is not on record here, which means reading the ground instead. The shallow end warms first and pulls fish in ahead of the rest. Weed, then depth: that is the order to fish a water of this kind. Reported across Day County: common carp, black bullhead and green sunfish. What holds for the county may not hold for this water. On Sweetwater Lake that means starting tight and working out.

• Seasonal Patterns

  In an average year July sits at 72°F and January at 11°F. A hard winter is normal, and the thaw brings a strong few weeks. Winter locks it down, and early April brings it back. From about early April to around late November, expect open water on the long-run figures. The strong weeks are the first after break-up and the last before the freeze. Sweetwater Lake runs to its own calendar within the local pattern.

• Tackle & Baits

  Who may fish here is not settled in anything we hold. This is a natural basin, not a dammed one. No made access is recorded, so a short walk in is the likely arrangement. Largemouth respond to soft plastics tight to cover; go weedless where the growth is heavy. Where the road in crosses private land, ask first. Where tickets apply, they are sold in the nearest town rather than on the bank. For a change of water, Twin Sloughs is 7.1 miles distant. Rules at Sweetwater Lake are worth checking on the day.