Colorado Fishing Reports ยท South Platte Basin
Above Montgomery Reservoir, near Hoosier Pass, the Middle Fork is a tiny, cold headwater stream at about 11,000 ft with small brook trout.
Looking for the latest Above Montgomery Reservoir 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 Middle Fork South Platte River โ Above Montgomery Reservoir.
Current flows
Wind forecast
Above Montgomery Reservoir fishing report
Updated November 7, 2026.
At this elevation the creek is icing up and mostly done for the year. Flows are only a few cfs.
If you go on a warm afternoon, a small attractor dry or midge in the deepest pools may find a brook trout, but this is summer water. We suggest saving it for July through September.
Load your fly box
Before you head to Above Montgomery Reservoir, bring: Parachute Adams #16-18, Elk Hair Caddis #14-16, Royal Wulff #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.
Above Montgomery Reservoir river details
| Access | National forest land near Montgomery Reservoir off Highway 9 below Hoosier Pass. Park only in designated areas. |
|---|---|
| Elevation | About 10,900 to 11,000 ft |
| Drive from AvidMax | About 105 miles, roughly 2 hours 43 minutes from our Centennial shop |
| Best season | July through September |
| Fish | Brook trout, with some cutthroat |
| 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 land near Alma and Hoosier Pass |
| Kids | Yes in summer. Small, slow water. |
| Good to know | Weather changes fast at 11,000 ft. Bring layers, even in summer. |
Fishing by season
Winter
Frozen.
Spring
Late runoff.
Summer
The best time. Eager brook trout on dries.
Fall
A short window before ice.
How to get there
Montgomery Reservoir is off Highway 9 just south of Hoosier Pass, above Alma.