Fishing Report, April 15

Here’s to a big return, a small payment, and no extensions! Hopefully, you even got yours finished well before today.

The Flathead has been solid this past week; even with flows coming up, the river remains “fishable” and productive right now. Looking ahead, the weather is shifting back into a classic spring pattern. Expect a mix of rain and snow through the week, but keep an eye on the weekend—sun is in the forecast and should get things moving.

Despite the fluctuations, the snowpack is still stacking up nicely, keeping us in great shape for the summer!

Fishing Report, Whitefish

Flathead River: The “High & Dirty” Report

Status: Almost Blown Out | Flow: ~19,000 CFS | Temp: 40°F

The “Tax Day” bump has arrived in full force. The forks have officially blown out, pushing the main stem twords 19,000 cfs. At this volume, the river is no longer a viable option for the next few days.

• The Reality: Visibility has dropped significantly as the North and Middle Forks dump runoff into the system. It’s best to let the river settle and focus your energy elsewhere for the time being.

• Weather Outlook: Expect rain and snow showers through Friday. The silver lining is the forecast for this weekend—we’re looking at mostly sunny skies and highs near 64°F by Sunday. While that warmth won’t help the river clarity, it’s going to ignite the stillwater bite.

• The Long View: We are still stacking snow in the high country, which is exactly what we want to see for a sustained summer season. We anticipate a stabilizing window of next week somtime.

Local Lake Report: The Spring Pivot

With the river on a hiatus, the local lakes are the clear winners. Conditions are prime, and the fish are looking for a reason to eat.

• Whitefish Lake: The most reliable producer for big numbers right now. The Lake Trout (Mackinaw) are in a steady groove. We are finding the most success vertical jigging in the 140–180 foot range. White tube jigs or heavy lead-heads tipped with cut bait remain the “old reliable” setup.

• Echo Lake (Smallmouth): The smallies are waking up! They are staged in that 15-foot transition zone rather than the shallows. With water temps hovering around 43°F, keep your presentation “painfully slow.”

• Spring Pike (On the Fly): The “water wolves” are moving into the shallow, mud-bottom bays that warm up fastest. For the fly anglers, break out the 8-weight and large, flashy articulated streamers. Target the edges of last year’s weed growth or protected sloughs.

Fishing Report, Kalispell

With the Flathead officially hitting its spring surge at 19,000 CFS, the stillwater game around Kalispell is where the local action is.

• South of Town (Rainbows): The ‘bows are cruising the sun-warmed shallow shelves. Focus on the littoral zones where the water temps tick up first in the morning.

• West of Town (Grayling): Target the “green lines”—the transition zones where old weedbeds meet open water. Parallel these weed lines to keep your fly in the strike zone.

• Spring Pike (On the Fly): Aggressive “water wolves” are active in the shallow, mud-bottom bays.

  • The Setup: Break out the 8-weight and throw large, flashy articulated streamers like Game Changers or Bunnies in white, chartreuse, or “fire tiger.”

  • The Rig: Run a wire leader or heavy fluorocarbon bite guard to handle the teeth. Target last year’s weed growth and protected sloughs.

Missouri River: Tailwater Reliability

While the local rivers are pushing mud, the Missouri below Holter Dam is in prime spring form. It remains the most stable and productive game in the state right now.

• The Stats: Flows are holding steady at 3,050 CFS with water temperatures peaking at 46°F.

• Nymphing (The Bread & Butter): This is your most consistent play for high numbers. A two-fly rig is the way to go. Start with a Sowbug (pink or rainbow) as your lead and trail a Green Machine or a small midge larva. Set your indicator to about 4–6 feet and look for fish in the slower walking-speed water and inside seams.

• The Dry Fly Game: If you’re willing to “hunt” for rising fish, it is officially Mayfly season.

  • BWOs & Midges: Hatches are occurring daily, usually peaking between noon and 3:00 PM.

  • The Strategy: Look for heads and noses in the slick, flat water and foam lines. A long leader (12) and a delicate presentation with a Griffith’s Gnat or a BWO Cripple will be necessary to trick these selective tailwater trout.

• Weather Note: Watch for those cloudy, low-pressure days—that’s when the surface activity really ignites.

Guide Trips

Don’t let the high water keep you on the sidelines. Whether you want to technical-fish the Missouri or master the spring stillwater game, Montana Fishing Guides provides top-notch customer service from the first call to the final handshake. With nearly two decades of experience and a crew of 20 professional guides, we have the local knowledge to put you on fishable water.

Our phone is on 24/7—call 406-233-9001 to book your next fun day on the water!