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Colorado River Fishing Information
Upper Section - near Hot Sulphur Springs, CO
Miles of river with some excellent access and great trout await you when you fish the upper section of the Colorado. The upper section is defined from below shadow mountain reservoir down to Kremmling. There are several access points off the hwy including some gold medal water. Brown trout are the most plentiful in the upper section, but there are a lot of rainbow trout as well. It varies each year, but the size of the fish often is around 13” – 17”. This makes it a great place to learn how to catch larger fish who will put up a fight on a fly rod.
The upper section of the Colorado has always been hit or miss from my experience. When the fishing is good, and you figure out their pattern, it’s downright incredible. Other times you wonder if the fish have been magically transported out of the river. This kind of experience is tell tale behavior that the fish are patterned and prefer very specific routines. With a little fly selection knowledge from an entomology course, and a good drift, you can catch some nice fish consistently on the many access points on this river
Fish: Many Medium-Sized Fish
Best Techniques: Dries & Nymphs
Best Seasons: Spring - Fall
River Type: Large Freestone
Fish Types: Rainbow Trout, Brown Trout
Dog Friendly: Yes but Leashed
Located in the Colorado River Basin near Hot Sulphur Springs, CO
Fishable Seasons & Current Weather
The best seasons to fish this river are Spring - Fall. See the current weather reports for the next 5-6 days listed below for the nearest city.
Hot Sulphur Springs
wind: 3mph ENE
H 50 • L 50
Weather from OpenWeatherMap
Knowing what flies to use is only have the battle. You have to know when the insects are active on the water and when it's likely the trout are feeding on them. Refer to our hatch charts below to understand when the insect categories and some of the possible hatches on the river.
Midges hatch year round, but their importance is from September through winter into April. During the warmer months, the trout often focus on larger insects as they are more active on the water like mayflies, caddis and stoneflies.
Aside from Blue wing olives, mayflies are active most commonly from May to August in Colorado. There are many different mayfly hatches found on most rivers and the most common are listed below.
Blue Wing Olive: September throut winter to April
Pale Morning Dun: June to Mid September
Colors: White, Yellow
Sizes: #14 - #20
Caddis hatch starting early in May and continue to the end of October.
Colors: Olive, Green, Yellow, Tan, Orange, Brown and Black.
Sizes: #10 - #20
We have some great stonefly hatches in Colorado and while not all rivers carry all species of salmonflies, you can often fish stonefly adult patterns with confidence from May to September. Start off in bigger sizes and get smaller till September hits (size 8 - 16)
Golden Stone: June to August
Colors: Yellow, Tan
Sizes: #8 - #14
Yellow Sally Stonefly: Mid June to August
Colors: Yellow, Tan
Sizes: #12 - #18
Salmonfly: Mid May to Mid July
Colors: Orange, Red, Brown
Sizes: #6 - #14
Terrestrials don't hatch since they are out of the water, but they can have importance starting in Mid April and ending in September.
These are the the top flies we sell for this river. Use the hatch chart above to know what flies you will want to have in your fly box during your adventure on the river and then select the flies here 30 days before your trip to get them at a great price. All of our flies are hand tied to each order to ensure quality and to keep our prices low for you.
Click on a fly below to select a size and color for purchase.
If you need an easier solution than selecting each fly and size, try out our top fly assortments for this river that will put all the flies you need in a single order for this river. We've already selected the flies we use in our fly box for this river including the sizes and colors and put them in these assortments so you can fish with the confidence that you have the right flies in your box.
Click on any of the pictures to see what flies, colors and sizes we recommend in each assortment.
Use these epic resources to get ready for your adventure. Whether you're planning your trip, learning your insects, improving your fishing with expert tips or getting detailed resources from the USGS streamflows or DoW, we got you covered to help you find the river and find the success you want.