I wanted to be on a lake that was great for fishing. Particularly for northerns, walleyes and perch. Thompson is a great lake for those and crappies and smallmouth bass.
It’s also a natural lake instead of a reservoir. The water level came up in the 80′s when they had some really wet years. A lot of farmland got flooded so it has lots of structure, stock damns, sunken trees and trees standing in the water and it makes a lakes GPS coordinates a neccessity.
There are parts of it where you can fish sand, mud, gravel or rocks. It’s a real snag filled lake and most people have the best luck with bottom bouncers. Lol, I even lost a lot of tackle fishing from my dock.
Lake thompson is big too. Somewhere around 17-18000 acres or so. Depends on the water levels. It was so big that one of the first things I did was get a map. I looked at the South Dakota GFP map but it didn’t have enough detail so I got one from the bait shop in Lake Preston.
Yankton County Lakes GPS Coordinates
Name USGS Map Latitude Longitude
Beaver Dam Jamesville 43.01 -97.44
Gavins Point Dam Gavins Point Dam 42.86 -97.48
Marindahl Dam Mayfield 43.04 -97.26
Green Island Gavins Point Dam 42.86 -97.39
Check out the rest of the GPS coordinates for all of the counties East of the Missouri river. County GPS coordinates are available for all lakes in Eastern SD.
