Colorado Fishing Reports ยท South Platte Basin
Waterton Canyon puts trout water at the edge of the Denver metro area. A wide dirt road closed to cars follows the river upstream toward Strontia Springs Reservoir, so the farther you walk or bike, the quieter it gets.
Looking for the latest Waterton Canyon river report? This page is updated by the AvidMax fly shop team with live flows, current conditions, hatches and the flies working now on the South Platte River in Waterton Canyon.
Current flows
Wind forecast
Waterton Canyon fishing report
Updated November 6, 2026.
The gauge is reading in the mid 20s cfs, which means low, clear water. Fish will be holding in the deeper pools and seams rather than the thin riffles.
For November, plan on small midges and Baetis nymphs (sizes 18 to 22) under a light indicator, with BWOs possible on cloudy afternoons. A small streamer worked slowly through the deeper runs can find the bigger browns.
We have no fresh guide report for this stretch yet, so this outlook is based on the current flows and what this river usually does this time of year. Fished it lately? Call or stop by the shop and tell us how it went.
Load your fly box
Before you head to Waterton Canyon, bring: Zebra Midge #18-22, Black Beauty #20-22, RS2 Emerger #18-22, JuJu Baetis #18-22, Pheasant Tail Nymph #16-20, Caddis Poopah #14-18, Elk Hair Caddis #14-18 (summer), Charlie Boy Hopper #10-12 (late summer), Woolly Bugger #8-10, Egg #14-16, Squirmy Wormie #12-14, Scud Bomb #14-16.
Flies working right now
The flies above that we have in stock right now.
Waterton Canyon river details
| Access | Walk or bike in from the Waterton Canyon Trailhead off Highway 121. The road is closed to cars past the first mile. |
|---|---|
| Elevation | About 5,500 ft |
| Drive from AvidMax | About 20 miles, roughly 30 minutes from our Centennial shop via C-470 |
| Season | All year |
| Fish | Brown trout (most common) and rainbow trout |
| Regulations | Check Colorado Parks and Wildlife for the current rules. A Colorado fishing license is required. |
| Leaders and tippet | 9 to 10 ft leaders, 5X to 6X tippet |
| Camping | No camping in the canyon. Chatfield State Park, nearby, has a campground. |
| Kids | Yes. The wide, flat road is easy walking or biking. |
| Good to know | Dogs are not allowed in Waterton Canyon. The farther up the road you go, the fewer people you will see. |
Fishing by season
Winter
Midges in the slow pools on mild days.
Spring
Higher, sometimes off-color water. Bigger nymphs and attractors near the banks.
Summer
Caddis, PMDs and hoppers, best early and late.
Fall
Pre-spawn browns and kokanee. Streamers and small nymphs in the deeper water.
How to get there
Park at the Waterton Canyon trailhead off Highway 121. The road is open to hikers and bikers only past the first mile.