Regulations
Colorado Fishing Regulations 2026
Colorado fishing is regulated by the CPW. As of 2026-05-08, fishid tracks 1,817 current rules covering 9 top-targeted species across freshwater waters.
Source: CPW · Buy a license · Verified
Top species (2026)
Tap a species below to see Colorado-specific seasons, size limits, slot limits, and gear restrictions, pulled directly from CPW's current published rules and verified within the last few hours.
- Trout (Brook, Brown, Rainbow)351 rules
- Largemouth Bass147 rules
- Smallmouth Bass116 rules
- Walleye74 rules
- Crappie (Black & White)45 rules
- Lake Trout44 rules
- Channel Catfish43 rules
- Bluegill (Sunfish)29 rules
- Northern Pike5 rules
Famous Colorado waters
Per-waterbody rule pages for the most-searched fishing destinations in Colorado. Multi-state lakes link to a single cross-state page that consolidates each agency's rules.
- Horsetooth Reservoirwalleye, smallmouth bass
- Grand Lakelake trout, rainbow trout
- Green Riversalmon, steelhead
- Blue Mesa Reservoirkokanee salmon, lake trout
- Dillon Reservoirrainbow trout, brown trout
- Rio Grande Riverbrown trout, rainbow trout
- Pueblo Reservoirwalleye, smallmouth bass
- Lake Granbykokanee salmon, lake trout
How Colorado fishing regulations work
CPW publishes the binding regulations covering recreational fishing in Colorado. Rules vary by water body, species, season, and zone, and they change mid-season more often than most anglers expect. fishid mirrors the published source pages and PDFs nightly, normalizes the rules into structured data (bag limits, size minimums, slots, season start/end, gear restrictions, and status), then re-verifies against the source.
For most species in Colorado, you'll want to check four things before keeping a fish: open season (year-round vs. spring/fall windows), size limit (minimum and any maximum), slot limit (a permitted size range with everything outside released), and daily bag. Many waters layer additional restrictions on gear, hook type, or live-bait use.
The species cards above link to the rule tables we maintain for each fishery. Trout, Largemouth Bass, Smallmouth Bass, and Walleye are the most-rule-dense fisheries in Colorado's data.
Reference only. Regulations change frequently, often mid-season. Always confirm with CPW before keeping a catch. The CatchRules iOS app reflects the same data, with offline access and species identification.
Official sources cited
Every rule on this page traces back to one of these official CPW pages or PDFs.
- https://www.eregulations.com/colorado/fishing/special-regulations-fishing-waters
- https://cpw.state.co.us/rules-and-regulations
- https://www.eregulations.com/colorado/fishing/statewide-bag-possession-limits
- https://cpw.state.co.us
- https://cpw.state.co.us/fish-species-information-list