Colorado Fishing Reports ยท South Platte Basin
Near the east portal of the Moffat Tunnel, South Boulder Creek is a small, high creek whose flow depends on tunnel deliveries.
Looking for the latest South Boulder Creek Moffat Tunnel 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 Boulder Creek โ Moffat Tunnel.
Current flows
Wind forecast
Moffat Tunnel fishing report
Updated November 7, 2026.
Tunnel deliveries are low this late in the fall, and the creek is cold, small and icing up. A few brook trout may take midges at midday, but fishing here is basically done for the season.
Load your fly box
Before you head to Moffat Tunnel, bring: Parachute Adams #16-18, Elk Hair Caddis #14-16, Zebra Midge #18-20, Pheasant Tail Nymph #16-18, RS2 Emerger #18-22, JuJu Baetis #18-22, Black Beauty #20-24, 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.
Moffat Tunnel river details
| Access | National forest land near the East Portal and Rollinsville. |
|---|---|
| Elevation | About 9,200 ft |
| Drive from AvidMax | About 45 miles, roughly 1 hour 20 minutes from our Centennial shop |
| Best season | Summer |
| Fish | Brook, brown and cutthroat trout |
| Regulations | Check Colorado Parks and Wildlife for the current rules. A Colorado fishing license is required. |
| Leaders and tippet | 7.5 to 9 ft leaders, 5X tippet |
| Camping | National forest dispersed sites |
| Kids | Yes in summer. Small water. |
| Good to know | Flow depends on Moffat Tunnel deliveries. |
Fishing by season
Winter
Frozen.
Spring
Late.
Summer
Prime time.
Fall
A brief window.
How to get there
Take Rollinsville Road (County Road 16) west to the East Portal.