Potholes Reservoir is best known for its spectacular bass, walleye, and panfish fisheries but do not overlook the quality trout you can catch out of this 27,800-acre reservoir. Two-to-three-pound rainbow trout are common in this lake, and they can get even bigger. Every year, multiple anglers catch seven-pound rainbows here.
So where do you find them? A reservoir this large can be intimidating to someone who has never fished here before. Fortunately, there are a few key places you can count on to find trout.
If you are a shore-bound angler there are a few good choices for you. In the spring, you can catch trout at Blythe Point, a WDFW access area with a boat launch on the southwest end of the reservoir. Simply go towards the end of the point and fish from there. Many anglers will plunk nightcrawlers or worms here because there are other species in the area that will take this bait as well.
A short distance away from Blythe Point is Potholes State Park. Don’t bother fishing the main lake from shore because it’s a long shallow flat that isn’t conducive to holding trout. Instead, go to the north end of the park and fish Frenchman’s Wasteway. The trout congregate in the moving water of this stream that flows into Potholes Reservoir at the northeast end of the park. Lures like Worden Rooster Tails or curly-tailed grubs with a 1/8-ounce jig head are proven winners here, as are worms fished under slip bobbers.
Another place to try from shore is MarDon Resort. In the early spring, right after ice-out, anglers can catch rainbows either still fishing or casting spinners and spoons from the shore behind the head office or at the swim beach. You do need to be staying at the resort to fish here.
Are you the kind of angler who likes to soak Powerbait? If so, head to Medicare Beach on the east end of the Reservoir. There are plenty of Powerbait plunkers here and if that’s not working, try fishing a marshmallow and worm off the bottom.
Boat anglers have more options and trolling in front of Medicare Beach or near the mouth of Frenchman’s Wasteway are two places worth fishing. Nathan LaFrance at MarDon Resort said trolling over the sunken habitat boxes between the resort and Blythe Point is also a good springtime strategy.
As for how to catch them, trolling a Berkley Flicker Shad in sizes #5 or #7 is a proven method to get trout to strike. Trolling a Needlefish spoon is also popular, and a frog pattern is a good color to start with unless the water is stained, in which case chartreuse would be a better bet. Finally, you can’t go wrong trolling the tried-and-true Mack’s Wedding Ring spinner tipped with a worm or a half of a night crawler.
As far as rods and reels go, a basic spinning reel with a 6 to 8-pound test works fine. While I used to fish ultralight rods for trout, I don’t do so here because the odds of landing a three or five-pound rainbow can be tough to do with a very light pole. That is why I favor a 6 ½ to 7-foot, medium-action spinning rod.
If you want a change of scenery from Potholes Reservoir, head to the seep lakes just south of the reservoir. Located on state land and within the Columbia National Wildlife Refuge, there are dozens of small lakes to explore fishing either from shore or in small boats, kayaks, or portable pontoon boats.
Some of these lakes are open year-round to include Corral Lake, which is a two-minute drive from MarDon Resort. Corral Lake is stocked with tagged rainbow trout that can be caught during the Washington Department of Fish and Wildlife’s annual trout derby that runs from the last Saturday in April through October 31st. If you catch a tagged fish, you report it to WDFW and you win a prize that could be a gift card or certificate or something more!
Checking with Nathan LaFrance at MarDon Resort some other year-round lakes worth fishing are Blythe Lake as well as Upper and Lower Goose Lake. LaFrance says the inlet into Soda Lake can also be a good bet and when he fishes there, he casts or trolls #4 or #5 Rapala Shad Raps. All the year-round lakes just mentioned have launches for small boats.
Other Seep Lakes open the last Saturday in April (April 26th, 2025). The most popular lake to fish during the lowland lakes opener in this area is Warden Lake and there is a resort at the north end of the lake along with a boat launch. Upper and Lower Hampton Lakes are good choices as are Hutchison and Shiner Lakes at the south end of the Columbia National Wildlife Refuge. If you want to get away from the crowds, hike into North and South Teal lakes. LaFrance says both waters fish well for rainbow trout.
Spring and Fall are both great times to chase after Rainbow Trout at Potholes Reservoir and the nearby Seep Lakes. Drop by the store at MarDon Resort for the latest conditions and if you are looking for a place to stay, the resort offers basic to luxury cabins, RV sites, tent sites, and a restaurant. Potholes State Park has basic cabins and a large number of RV and tent sites. Both locations also have boat launches.
John Kruse
www.northwesternoutdoors.com and www.americaoutdoorsradio.com
