CO · Freestone · USGS site 07091200
Hatch Window's starter list uses USGS site 07091200 for this water. Gauge coordinates: 38.6522188, -106.051126. This page does not show live conditions. For current streamflow and gauge height, see the official USGS page for site 07091200. USGS water data is provisional and may be revised.
These are the curated chart entries tagged for Mountain West waters and the freestone water type. They are general entries, not a report specific to this river.
| Hatch | Typical months | Patterns |
|---|---|---|
| Midges | January to December | Zebra Midge (nymph, size 18-22); Griffith's Gnat (dry, size 18-22); Rojo Midge (nymph, size 20-24) |
| Blue-Winged Olive | February to April, September to November | Parachute Adams (dry, size 16-20); Pheasant Tail Nymph (nymph, size 16-20); CDC BWO Sparkle Dun (emerger, size 18-20) |
| Skwala Stonefly | February to April | Skwala Stone Dry (dry, size 8-12); Pat's Rubber Legs (nymph, size 8-10) |
| Caddisflies (general) | April to August | Elk Hair Caddis (dry, size 14-18); Sparkle Pupa (emerger, size 14-18); LaFontaine's Deep Sparkle Pupa (nymph, size 14-16) |
| Salmonfly / Golden Stonefly | May to July | Chubby Chernobyl (dry, size 4-8); Stimulator (dry, size 6-10); Pat's Rubber Legs (nymph, size 4-8) |
| Pale Morning Dun | June to August | PMD Sparkle Dun (emerger, size 16-18); PMD Parachute (dry, size 16-18); PMD Pheasant Tail (nymph, size 16-18) |
| Green Drake (Western) | June to July | Green Drake Parachute (dry, size 10-12); Green Drake Nymph (nymph, size 10-12) |
| Hoppers, ants & beetles | July to September | Dave's Hopper (terrestrial, size 6-10); Chernobyl Ant (terrestrial, size 8-12); Foam Beetle (terrestrial, size 12-16) |
| Baitfish / sculpins (streamer season) | March to April, October to November | Woolly Bugger (streamer, size 4-10); Sculpzilla (streamer, size 2-6) |
| Yellow Sally (Little Yellow Stonefly) | May to July | Yellow Sally Dry (dry, size 14-16); Yellow Stimulator (dry, size 14-16); Little Yellow Stone Nymph (nymph, size 14-16) |
| Mahogany Dun | September to October | Mahogany Dun Parachute (dry, size 16-18); Pheasant Tail Nymph (nymph, size 16-18) |
See also the full hatch chart.
src/data/hatches.ts and src/data/spots.ts, commit c45001f.