Post Lake Fishing in Sully County, South Dakota

• Overview

  Post Lake sits in Sully County, out in South Dakota. It lies 1,709 feet above sea level. The water covers some 35 acres, so pick a bank rather than trying to cover it all. You are 27 miles from Gettysburg. Pierre lies 28 miles off, Fort Pierre another 30 miles. Near neighbours include: Sully Lake 15 miles off, Mundt Lake after 17 miles, Lake Chesley 17 miles off, Lake Douglas after 21 miles and Chapelle Lake 22 miles off. No county line comes close, which keeps the paperwork simple.

• Where to Fish on Post Lake

  Nothing we hold settles how deep this runs. Look for where the old bank line still shows under the surface. Rip-rap along the wall holds fish that the open bank never does. Reported across Sully County: northern pike, bluegill and largemouth bass. The county list is broader than any single water. At Post Lake the first feature you find is worth twenty minutes.

• Seasonal Patterns

  Expect July near 74°F and January near 15°F on the long-run figures. A hard winter is normal, and the thaw brings a strong few weeks. Count on hard cover from midwinter, and open water from early April. Open water usually runs from early April until about late November. May into June fishes hardest, and September gives a second good stretch before the lid returns. Post Lake runs to that rhythm year in and year out.

• Tackle & Baits

  Access status is simply unknown for this water. Public mapping records no formal access here, so plan for a walk and soft ground. For the bass here, soft plastics worked slow along cover and a spinnerbait for searching do most of the work. Gates get locked out of season on water like this. Signs go up and come down, so check on the day. For a change of water, Sully Lake is 15 miles distant. For Post Lake in particular, ask before you travel.