RIVER REPORT
South Platte River | Above Spinney
The South Platte River above Spinney Reservoir, often referred to as the “Dream Stream,” is a legendary stretch of water known for its world-class fly fishing. Flowing through the high plains of South Park, Colorado, this section is famous for its large brown, rainbow, and cutthroat trout, as well as seasonal runs of kokanee salmon. The river’s meandering channels, deep pools, and undercut banks provide a variety of fishing opportunities in a stunning open landscape with panoramic views of distant mountain ranges. This section is especially prized for its trophy-sized fish and challenging fishing conditions, drawing anglers from all over to experience one of Colorado’s premier fly fishing destinations.
CONDITIONS
Weather & Flow Data Reported From OpenWeather and USGS
Recent Reports
South Platte River Above Spinney Reservoir – April Fly Fishing Report: As of early April 2025, the South Platte River above Spinney Reservoir is transitioning into spring conditions. Historically, this section becomes fishable as ice recedes and water temperatures rise, typically around this time of year. Anglers can anticipate hatches of midges and Blue-Winged Olives (BWOs) during warmer midday periods, providing opportunities for both nymphing and dry fly fishing. Effective nymph patterns include Pheasant Tails, Copper Johns, and RS2s in sizes 16–20. For dry fly enthusiasts, BWOs and midge patterns in sizes 18–22 can be productive during active hatches. Additionally, streamer fishing with patterns like Woolly Buggers and Sculpzillas can yield positive results, especially during overcast conditions. Employing light tippets (5x to 6x) and a stealthy approach is advisable due to the river’s clear water and wary trout. Focusing efforts during the warmest parts of the day, typically late morning to early afternoon, can enhance success rates. Overall, the South Platte River above Spinney Reservoir offers rewarding opportunities for anglers as spring progresses.
Water Flow Data
5 Day Outlook
BUGS
South Platte River’s insect life provides a smorgasbord for hungry trout. AvidMax recommends these key fly patterns:
THE FISHERY
The South Platte River above Spinney Reservoir offers anglers a classic high-country fishing experience, where clear, cold waters and healthy trout populations thrive in the scenic grasslands of Colorado’s South Park.
Fish Species
The South Platte River above Spinney Reservoir, often referred to as the “Dream Stream,” is famous for its trophy-sized brown, rainbow, and cutthroat trout. Trout in this section can grow quite large, with fish regularly exceeding 20 inches. During the fall, brown trout move up from Spinney and Eleven Mile Reservoirs to spawn, providing anglers with the opportunity to catch large, aggressive fish.
Unique Fishing Conditions
This section of the river is a meadow stream with clear, slow-moving water and undercut banks, requiring stealth and precise presentations. Spring and fall are the best seasons, with fall seeing large browns and rainbows moving upstream from the reservoir for spawning. Hatches of blue-winged olives, midges, and caddis provide excellent dry fly fishing during summer and fall. Nymphing with small midge, mayfly, and egg patterns (sizes 16-22) is highly effective year-round, particularly in deeper pools and seams.
Access and Regulations
Public access to the South Platte River above Spinney is plentiful, with several access points via the Spinney Mountain State Wildlife Area and surrounding public lands. This section is designated as Gold Medal Waters, meaning it is managed for trophy trout, and strict regulations require artificial flies and lures only, with catch-and-release for all trout. Water flows can vary due to reservoir releases, so checking flow conditions before heading out is essential for planning a successful day on the water.
TACTICS
AvidMax encourages anglers to explore their full repertoire at South Platte River:
Nymphing
Nymphing allows anglers to target trout feeding below the surface, with or without an indicator, making it an effective technique for covering deep runs and slow pools where fish are actively feeding on subsurface insects.
Dry Fly Fishing
Fishing with dry flies provides the ultimate surface experience, imitating adult insects and offering exciting visual strikes, particularly during hatches when trout are feeding on the water’s surface.
Streamer Fishing
Using streamers mimics baitfish and other larger prey, offering an aggressive approach that can entice bigger, predatory trout, especially when fishing deeper water or fast-moving currents.
SEASONS
Each season on the South Platte River brings unique joys and challenges for AvidMax anglers:
Spring
Spring is prime time for rainbow and cutthroat trout spawning runs from Spinney Reservoir, with nymphs, egg patterns, and San Juan worms being highly effective. Focus on deeper pools and runs where these larger fish gather.
Summer
Summer brings great dry fly fishing with consistent hatches of caddis, PMDs, and tricos. Use long leaders and light tippets for delicate presentations in the crystal-clear water.
Fall
Fall offers excellent streamer fishing as large brown trout move up from Spinney Reservoir to spawn. Streamers and egg patterns work well in deeper runs and near structure.
Winter
Winter fishing is more challenging, but fish can still be caught in deeper pools using small midge and baetis nymphs. Focus on fishing during the warmest part of the day when trout are more active.
REMEMBER
The South Platte River above Spinney Reservoir, also known as the Dream Stream, is renowned for its large trout and scenic beauty. However, its high traffic and delicate ecosystem require responsible fishing practices to protect this trophy fishery for future generations.
Water Conditions
The river’s flows are influenced by releases from Spinney Reservoir, and water levels can fluctuate seasonally. Always check current flows before heading out, as low flows can make the fish wary, and high flows can affect wading safety.
Regulations
This stretch is governed by strict catch-and-release regulations, with restrictions on artificial flies and lures only. Ensure you’re familiar with these rules to help preserve the fishery’s quality and maintain the trophy trout population.
Safety
The wide-open landscape means weather conditions can change rapidly, particularly at high altitude. Be prepared for sudden storms or wind, and wear appropriate wading gear, as the river’s rocky bottom and swift currents can make wading challenging.
COMMENTS
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