Colorado Fishing Reports ยท Colorado Basin
Below Green Mountain Reservoir the lower Blue runs through a canyon to the Colorado River. It is Gold Medal Water with big browns and rainbows.
Looking for the latest Below Green Mountain 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 Blue River โ Below Green Mountain Reservoir.
Current flows
Wind forecast
Below Green Mountain Reservoir fishing report
Updated November 7, 2026.
Flows were steady in the 180 cfs range in late October with 1 to 3 feet of visibility and a green tint from moss and silt, because the reservoir is low. Water is in the 50s. Check the gauge, since releases can change.
Wade it rather than float it. Dark nymphs such as Pat's Rubber Legs, a black Juju Baetis or UV midge, and black streamers beat dries in the stained water.
Load your fly box
Before you head to Below Green Mountain Reservoir, bring: Pat', s Rubber Legs #10-12, JuJu Baetis #18-22, Zebra Midge #18-22, Slump Buster #4-6, Woolly Bugger #6-8, RS2 Emerger #18-22, Pheasant Tail Nymph #16-20, Black Beauty #20-24, Egg #14-16, Squirmy Wormie #12-14.
Flies working right now
The flies above that we have in stock right now.
Below Green Mountain Reservoir river details
| Access | Walk-in from the BLM lot below the dam and Spring Creek Road. Floatable at higher flows. |
|---|---|
| Elevation | About 7,700 ft |
| Drive from AvidMax | About 107 miles, roughly 2 hours 24 minutes from our Centennial shop |
| Best season | Spring and fall |
| Fish | Brown and rainbow trout |
| Regulations | Gold Medal Water with special artificial and catch-and-release rules. Check Colorado Parks and Wildlife for the current rules. A Colorado fishing license is required. |
| Leaders and tippet | 9 ft leaders, 5X to 6X tippet |
| Camping | Green Mountain Reservoir campgrounds near Heeney |
| Kids | No. Steep banks and strong current. |
| Good to know | Dark nymphs and streamers beat dries when the water is stained. |
Fishing by season
Winter
Low and slow.
Spring
Midges and BWOs.
Summer
Big stoneflies and caddis.
Fall
Streamers and spawning browns.
How to get there
Take Highway 9 north from Silverthorne to the Green Mountain Dam area and the BLM access.