Time: 10:30AM – 3:30PM

Location: Eleven Mile Canyon

South Platte River 05/24/2025 Photo Album

As I mentioned in my post of 05/20/2025, I was set to visit the South Platte River, when I was distracted by the temporary low flows on the Arkansas River and made that my destination on Monday. Friday was my day to follow through on my initial inclination. I made the trip to the South Platte River in Eleven Mile Canyon. The high temperature was projected to reach the low seventies in nearby Lake George, CO, and the flows were actually running a bit low at 58 CFS.

Looking Ahead

For this trip to Eleven Mile I decided to experiment with a new stretch of the river. I usually frequent the upper special regulation section below the dam, but I admire the open water area, as I drive by. Sure, the bait fishermen are able to ply the river with their offerings, but I have learned historically on other streams that wily fish remain that are able to avoid the drifting worms and power bait. The key is to probe out of the way and difficult to reach spots, and these types of water exist in abundant quantity in Eleven Mile Canyon.

Number Two

Typical Productive Water

I slowly drove up the canyon while scanning the river for faster sections, until I finally found an area that exhibited the characteristics that I was seeking. The temperature was in the low sixties, so I pulled on my rain jacket for extra warmth, and I rigged my Sage R8 four weight. By 10:30AM I was on the river, and I began my angling day with a size 8 tan-body pool toy hopper, an orange scud and an olive perdigon. Between 10:30AM and 11:45AM I prospected all the likely seams, slots, pockets and riffles; and I notched four trout in my fish count. Two were rainbows and two were brown trout. One aggressive rainbow crushed the pool toy hopper, and the others grabbed  the nymphs. After twenty minutes the orange scud failed to deliver, so I substituted a beadhead hares ear nymph, and it attracted one rainbow, while the other two trout favored the olive perdigon.

Did the Job

Colorful Rainbow

After lunch on a nice flat rock, I continued up the river, and I built the fish count to seven. The three additional trout chose the hares ear, and in the process of landing one of the nicer rainbows, the olive perdigon broke off. I always grieve the loss of a perdigon, and the expensive tungsten bead, and I did not wish to expose more to that risk, and the trout seemed to like the hares ear, so I dipped into my fleece wallet for a PMD supernova to replace the perdigon.

Pocket Water Delight

By one o’clock I encountered a group of elementary age kids splashing and playing on a huge exposed boulder in the middle of the river. The river in the upstream area was wide and shallow and slow moving, so I retreated to the car and advanced up the road for .2 mile. I parked and jumped into another narrow section that contained deep pockets, plunge pools and exposed boulders. This was exactly the type of structure that I was seeking.

Seams Always Good

For the remainder of my afternoon I probed the likely spots, and I increased the fish count from seven to seventeen. Two nice brown trout in the fourteen inch range graced my net during this phase of my day. Both of the large trout emerged from lies in front of large exposed boulders, where the current deflected off the upstream face. Part way through the afternoon time frame, the PMD supernova was separated from my tippet, and I replaced it with a salvation nymph. Of the ten trout landed, as I moved the fish count from seven to seventeen, two consumed the supernova, one mauled the pool toy, one nabbed the salvation nymph and the remainder picked off the hares ear.

One of the Better Fish

Emerged from the Current Seam

My theory held. The section featured fast water with pockets and slots and hidden seams, and I used my dry/dropper to probe each possibility. Most fishermen prefer the deep pools and the entering runs as obvious fish magnets, and I avoided these spots that are normally pressured by the bait dunkers. I would not characterize the fishing as sizzling, but rather steady. Not all promising locations yielded results, but if I moved at a steady pace and persisted, I was able to create adequate action.

Covered in Spots

Nice Brown from in Front of the Large Boulder

Aside from the two fourteen inch browns, I netted quite a few trout in the eleven to twelve inch range, and I recalled at least four decent fish that shed my fly hook after brief fights. On the day I estimate that the ratio of browns to rainbows was roughly 50/50.  Overall it was a fun day. I always enjoy discovering new streams or different sections of rivers that produce favorable results. I will definitely do more exploration of Eleven Mile Canyon.

Fish Landed: 17

End of Day Double