Willow Creek Reservoir fishing: Rainbow Trout, Brook Trout, Brown Trout
Target species: Rainbow Trout, Brook Trout, Brown Trout
Boat: 1 ramp or launch on file for this water.
Start here: Launch at Willow Creek Reservoir.
The reservoir
Willow Creek Reservoir covers 1,323 acres in Montana, across Lewis and Clark County. It is a reservoir: 92.8% of it is 36 feet deep or less; the deepest point measured is ≈50.9 feet (15.5 m). Our records hold 3 species for this water.
Stocking: 7,013,287 fish, 1996–2026
Montana Fish, Wildlife & Parks records list 7,013,287 fish released into this water from 1996 to 2026.
- Rainbow Trout: 7,008,802 in 2007–2026
One more species on the stocking list.
Depth and bottom
Deepest measured point: ≈50.9 ft (15.5 m). 92.8% of the water is 36 feet or shallower. We hold 51 depth contours for this water, drawn from 68,648 soundings.
- 0–3 ft: 10.6% of the water
- 3–6 ft: 11.1% of the water
- 6–9 ft: 9.7% of the water
- 9–12 ft: 9.3% of the water
- 12–15 ft: 9.9% of the water
- 15–18 ft: 9.1% of the water
- 18–21 ft: 8.3% of the water
- 21–24 ft: 6.7% of the water
- 24–27 ft: 5.4% of the water
- 27–30 ft: 4.9% of the water
- 30–33 ft: 4.2% of the water
- 33–36 ft: 3.6% of the water
- 36–39 ft: 3% of the water
- 39–42 ft: 2.5% of the water
- 42–45 ft: 1.6% of the water
- 45–48 ft: 0.2% of the water
3 target fish, led by Rainbow Trout
- Rainbow Trout — Feeding water: 50–65°F.
- Brook Trout — Feeding water: 50–65°F.
- Brown Trout — Feeding water: 50–65°F.
1 ramp or launch on this water
On this water we hold 1 boat ramp.
- Willow Creek Reservoir website myfwp.mt.gov/fishMT/fas/39753628
The place listed has no fee or opening hours on file: a blank means we hold no such field, not that it is free or always open, and this list may not be complete.
Water and conditions
Our water temperature readings average 72°F; they do not cover the whole year, so this is not a yearly average. pH averages 8.3. These readings span 2017. The latest reading is from 2017, more than three years ago: read these numbers as history, not as the water today.
What is hard here
Only 1 public ramp is on file, so the launch decides where you fish.
Where this data comes from
- US Bureau of Reclamation — USBR reservoir sedimentation surveys: class A, a survey of the bottom, 2002.
- Montana Fish, Wildlife & Parks — Montana Fish, Wildlife & Parks: depth contours: class A, a survey of the bottom.
- EPA NLA — EPA National Lakes Assessment: class B, a depth figure measured and published by an agency, without a bottom map.
Part of these depths rest on an averaged water level, so they are approximate (≈).
