Lake Oahe hosts a major walleye and northern pike tournament each summer
The Lake Oahe Fishing Tournament is an annual summer event on Lake Oahe near Mobridge, South Dakota, drawing anglers who fish for walleye and northern pike. The tournament typically runs for two or three days in June or July, though the exact dates shift year to year. You fish from your own boat or rent one locally, and the tournament weighs your catch at a designated weigh-in location on the shore.
Entry fees run between $100 and $300 per boat, depending on the year and division. Prize money goes to the boats that land the heaviest fish in each category. The event draws both local anglers and visitors from neighboring states, and it is one of the larger tournaments on Lake Oahe during the summer season.
Key Takeaways
- The Lake Oahe Fishing Tournament takes place over two or three days in early summer, with exact dates announced each spring by the tournament organizers.
- You need a valid South Dakota fishing license and must follow all state fishing regulations, including daily catch limits and size restrictions for walleye and pike.
- Entry fees typically range from $100 to $300 per boat, and you can fish from your own boat or rent one through marinas near Mobridge.
- Weigh-in happens at a central location on shore at set times each day, and you must bring your fish to the official scale to be counted.
- Lake Oahe walleye fishing is best in early morning and evening, while northern pike can be caught throughout the day in deeper water and around structure.
How to enter and what you need to bring
Registration for the Lake Oahe Fishing Tournament usually opens in April or May, and you can register online through the tournament's official website or by phone through the Mobridge Chamber of Commerce. You will need to provide your boat registration number, the names of all anglers fishing from your boat, and proof that each person has a valid South Dakota fishing license.
On tournament days, bring your fishing license, your boat registration, and a cooler with ice to keep your catch fresh. You must also have a measuring device on hand, because fish under the minimum size will not count toward your weight. Arrive at the weigh-in location before the deadline each day — weigh-ins typically close at a set time in the afternoon, and fish brought in after that time are not counted.
Lake Oahe walleye and pike fishing basics
Lake Oahe is a large reservoir that holds both walleye and northern pike year-round. Walleye bite best in low light, so fish early morning and evening, or on overcast days. Use live bait — shiners, minnows, or crawfish — or cast jigs and crankbaits along the deeper edges where the lake floor drops off. Walleye in Oahe run 15 to 20 inches on average, though larger fish are caught regularly.
Northern pike prefer structure: fallen trees, weed beds, and rocky points. Pike will chase topwater lures and large spinners, and they bite throughout the day. The minimum size for pike in South Dakota is 24 inches, and Oahe produces pike in the 28- to 36-inch range. Both species require a valid fishing license, and you must follow the daily catch limits set by the South Dakota Department of Game, Fish and Parks — limits change by species and season, so check the current regulations before you fish.
Boat rentals and lodging near Mobridge
If you do not own a boat, several marinas near Mobridge rent fishing boats by the day. Oahe Marina and Mobridge Marina both rent 16- to 20-foot boats equipped with trolling motors and fish finders. Rental rates typically run $150 to $250 per day, plus fuel. Reserve early if you are coming during tournament week, because boats fill up quickly.
Mobridge has motels, cabins, and campgrounds within a few miles of the lake. The Mobridge Chamber of Commerce publishes a lodging guide on their website, and many places offer discounts for tournament participants. If you plan to camp, the Army Corps of Engineers manages several campgrounds around Lake Oahe with full hookups and boat launches.
Tournament rules and fish handling
All fish must be caught during the official tournament hours, which are announced at the captain's meeting the day before fishing begins. You cannot use live baitfish caught from Lake Oahe itself — you must bring bait from outside or use artificial lures only. Fish must be alive or on ice when brought to the weigh-in, and the tournament will disqualify any fish that shows signs of having been caught before the tournament started.
Each boat is allowed one entry, and all anglers on the boat must be registered before you leave the dock. The tournament divides boats into divisions based on boat size or angler experience level, so check the rules to see which division you belong in. Prize payouts are announced after the final weigh-in, and winners are notified by phone or email within a few days.
Preparing your boat and tackle for tournament fishing
Before tournament week, service your boat's engine and check your trolling motor battery. Make sure your fish finder works and that your GPS is loaded with Lake Oahe maps. Bring spare propeller shear pins, extra spark plugs, and a basic tool kit — a breakdown on the water costs you fishing time you cannot get back.
Stock your tackle box with the lures and rigs you plan to use. Walleye anglers should bring jigs in 1/4- to 1/2-ounce weights, crankbaits in natural colors, and live bait rigs. Pike anglers need larger lures — 4- to 6-inch crankbaits, spinnerbaits, and topwater plugs. Bring more tackle than you think you will need, because losing a lure to a snag or a fish happens fast in a tournament.
What to expect on tournament days
Tournament days start early. Most events have an official launch time between 6 and 7 a.m., and boats line up at the ramp before dawn. You will fish for six to eight hours, depending on the tournament format. Some tournaments run a single long day; others split the fishing into morning and afternoon sessions with a midday break.
Weigh-in is the most visible part of the tournament. Boats pull up to the official scale one at a time, and your fish are counted and weighed in front of spectators. The atmosphere is social — people watch the big fish come in, talk about where they caught them, and compare notes for the next day. If you do not place in the money, you still get to see what the winning weights were and learn from other anglers' success.
Frequently Asked Questions
Do I need my own boat to fish the tournament?
No. You can rent a boat from a marina near Mobridge for the tournament days. Reserve early, because rental boats fill up during tournament week. You still need to register as a boat entry and have all anglers on board hold valid South Dakota fishing licenses.
What is the minimum fish size for walleye and pike on Lake Oahe?
Walleye minimum is 15 inches; northern pike minimum is 24 inches. Fish below these sizes do not count toward your weight. Check the South Dakota Department of Game, Fish and Parks website before the tournament, because size limits can change.
Can I fish alone, or do I need a full boat?
Most tournaments allow single anglers to fish, but you still pay the full boat entry fee. Some tournaments pair solo anglers together in a boat to split costs. Ask the tournament organizers when you register whether they offer a solo division or pairing option.
What happens if I catch a fish after weigh-in closes?
Fish brought in after the official weigh-in deadline do not count. Weigh-in times are strict because the tournament needs to close out the day's results. Plan to be at the weigh-in location at least 15 minutes before the deadline.
Where do I find the tournament dates and registration information?
The Mobridge Chamber of Commerce publishes tournament dates and registration details on their website each spring. You can also call the chamber directly or check with local marinas, which often have registration forms and flyers.