Keyhole Reservoir fishing: Northern Pike, Walleye
Target species: Northern Pike, Walleye
The reservoir
Keyhole Reservoir covers 8,753 acres in Wyoming, across Crook County. It is a reservoir: 90.9% of it is 35 feet deep or less; the deepest point measured is ≈65 feet (19.8 m); at the dam, USGS RESSED gives 79.3 feet (24.2 m) at full pool. Our records hold 9 species for this water.
Depth and bottom
Deepest measured point: ≈65 ft (19.8 m). USGS RESSED gives 79.3 ft (24.2 m) at the dam at full pool: a measured figure, not a survey map. 90.9% of the water is 35 feet or shallower. We hold 84 depth contours for this water, drawn from 130,212 soundings.
- 0–5 ft: 41.3% of the water
- 5–10 ft: 13% of the water
- 10–15 ft: 9.8% of the water
- 15–20 ft: 9.5% of the water
- 20–25 ft: 6.5% of the water
- 25–30 ft: 5.8% of the water
- 30–35 ft: 5% of the water
- 35–40 ft: 2.2% of the water
- 40–45 ft: 2.3% of the water
- 45–50 ft: 2.3% of the water
- 50–55 ft: 1.7% of the water
- 55–60 ft: 0.7% of the water
2 target fish, led by Northern Pike
- Northern Pike — Feeding water: 50–75°F.
- Walleye — Feeding water: 50–75°F.
Also recorded here: Freshwater Drum, White Crappie, Common Carp, Red Shiner, Emerald Shiner, Spottail Shiner, Gizzard Shad.
Water and conditions
Our water temperature readings average 69°F; they do not cover the whole year, so this is not a yearly average. pH averages 8.5. These readings span 2017–2018. The latest reading is from 2018, more than three years ago: read these numbers as history, not as the water today.
What is hard here
Wind is the limit, not the fish: 8,753 acres of open water build a short steep chop, and there is no shelter in the middle.
Where this data comes from
- US Bureau of Reclamation — USBR reservoir sedimentation surveys: class A, a survey of the bottom, 2003.
- USGS RESSED — USGS RESSED reservoir sedimentation database: 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 (≈).
