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Best rainbow trout lakes in Colorado

67 Colorado waters list rainbow trout (official records or labelled estimates), 6 mapped with survey or official-chart depth data. Ranked below by size and depth-data quality, leading with the waters in our reviewed search catalog — open any water to see exactly where to fish it: depth contours, scored spots with plain-English reasons, seasonal windows and bait picks. The classic stocked cold-water trout. Depth is everything: rainbows follow the temperature layer they like.

1. Navajo Reservoir — 333 ft max · real survey depth contours · Largemouth Bass, Smallmouth Bass, Northern Pike, CrappieWhy #1: survey-backed contours receive the ranking's data-quality boost · 2 public access sites
2. Blue Mesa Reservoir — 323 ft max · real survey depth contours · Rainbow TroutWhy #2: survey-backed contours receive the ranking's data-quality boost · 14 public access sites
3. McPhee Reservoir — 262 ft max · Largemouth Bass, Smallmouth Bass, Walleye, CrappieWhy #3: mapped size signal; contours are approximated · 2 public access sites
4. Granby Reservoir — 221 ft max · Rainbow Trout, Lake Trout, Brown Trout, KokaneeWhy #4: mapped size signal; contours are approximated · 2 public access sites
5. Arkansas River (Colorado) — 8 ft max · Rainbow Trout, Brown TroutWhy #5: mapped size signal; contours are approximated · 12 public access sites
6. Eleven Mile Res — 135 ft max · Northern Pike, Rainbow Trout, Yellow Perch, Common CarpWhy #6: mapped size signal; contours are approximated · 3 public access sites
7. Horsetooth Reservoir — 188 ft max · Largemouth Bass, Smallmouth Bass, Walleye, CrappieWhy #7: mapped size signal; contours are approximated · 6 public access sites
8. Pueblo Reservoir — 129 ft max · real survey depth contours · Largemouth Bass, Smallmouth Bass, Walleye, CrappieWhy #8: survey-backed contours receive the ranking's data-quality boost · 1 public access site
9. Turquoise Lake — 115 ft max · Rainbow Trout, Lake Trout, Brown Trout, Cutthroat TroutWhy #9: mapped size signal; contours are approximated · 2 public access sites
10. Clear Creek Reservoir — 61 ft max · real survey depth contours · Rainbow Trout, Lake Trout, Brown Trout, KokaneeWhy #10: survey-backed contours receive the ranking's data-quality boost · 1 public access site
11. Twin Lakes Lower — 95 ft max · Rainbow Trout, Lake Trout, Brown Trout, Cutthroat TroutWhy #11: mapped size signal; contours are approximated · 2 public access sites
12. Colorado River (Upper) — 10 ft max · Rainbow Trout, Brown TroutWhy #12: mapped size signal; contours are approximated · 5 public access sites
13. Ruedi Reservoir — 246 ft max · Rainbow Trout, Yellow Perch, Lake Trout, Brown TroutWhy #13: mapped size signal; contours are approximated · 2 public access sites
14. Chatfield Reservoir — 60 ft max · Largemouth Bass, Smallmouth Bass, Walleye, CrappieWhy #14: mapped size signal; contours are approximated · 3 public access sites
15. Shadow Mountain Reservoir — 24 ft max · Rainbow Trout, Lake Trout, Brown Trout, KokaneeWhy #15: mapped size signal; contours are approximated · 2 public access sites
16. Boyd Lake — 16 ft max · Largemouth Bass, Smallmouth Bass, Walleye, White BassWhy #16: mapped size signal; contours are approximated · 2 public access sites
17. Gunnison River (Gorge) — 10 ft max · Rainbow Trout, Brown TroutWhy #17: mapped size signal; contours are approximated · 2 public access sites
18. Trinidad Reservoir — 70 ft max · Largemouth Bass, Smallmouth Bass, Walleye, SaugeyeWhy #18: mapped size signal; contours are approximated · 2 public access sites
19. Carter Lake — 180 ft max · Largemouth Bass, Walleye, Bluegill, Rainbow TroutWhy #19: mapped size signal; contours are approximated · 4 public access sites
20. Standley Lake — 96 ft max · Largemouth Bass, Smallmouth Bass, Walleye, CrappieWhy #20: mapped size signal; contours are approximated · 4 public access sites
21. Spinney Mtn Res — 46 ft max · Northern Pike, Rainbow Trout, Yellow Perch, Brown TroutWhy #21: mapped size signal; contours are approximated · 2 public access sites
22. Groundhog Reservoir — 97 ft max · real survey depth contours · Rainbow Trout, Cutthroat TroutWhy #22: survey-backed contours receive the ranking's data-quality boost · no verified access record attached
23. Gross Reservoir — 299 ft max · Rainbow Trout, Muskellunge, Lake Trout, Brown TroutWhy #23: mapped size signal; contours are approximated · 1 public access site
24. Lemon Reservoir — 188 ft max · Rainbow Trout, Brown Trout, Kokanee, SplakeWhy #24: mapped size signal; contours are approximated · 1 public access site
25. Willow Creek Reservoir — 124 ft max · Rainbow Trout, Brown TroutWhy #25: mapped size signal; contours are approximated · no verified access record attached

…plus 42 more Colorado waters holding rainbow trout.

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When to fish rainbow trout in Colorado

• Spring 5–20 ft — Post-ice-out trout roam shallow; fish inflows and windblown shorelines.
• Summer 8–30 ft — Rainbows hold near cold inflows, current seams and the thermocline — find the cool water and you've found the fish.
• Fall 10–35 ft — Fall feeding on rock shoals, current and channel edges as water cools.
• Winter 8–40 ft — Trout are comfortable in cold water — one of the best winter targets; streams and tailwaters fish shallow, deep lakes hold on basin edges.

Also in Colorado: best largemouth bass lakes · best smallmouth bass lakes · best walleye lakes · best saugeye lakes · best northern pike lakes · best crappie lakes · best bluegill lakes · best channel catfish lakes · best white bass & hybrids lakes · best yellow perch lakes · best common carp lakes · best lake trout lakes · best brown trout lakes · best brook trout lakes · best kokanee lakes · best cutthroat trout lakes · best splake lakes

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