Time: 11:00AM – 4:00PM

Location: Below Gross Reservoir

South Boulder Creek 08/28/2024 Photo Album

With Labor Day weekend and a trip to Hilton Head Island in my near future, I was facing perhaps my last fly fishing outing until the second week of September. I checked the flows on my home waters, South Boulder Creek, and the water managers cranked down the valve to 100 CFS. It was 122 CFS during my last visit to the tailwater below Gross Reservoir, and that level dictated extreme caution when wading with only a few viable crossing points. The combination of lower flows and the prospect of the presence of green drakes clinched my decision. I made the trip to the Walker Ranch Loop trailhead for a day of fly fishing.

The temperature at the parking lot, when I arrived, was 74 degrees, and I suspect that the reading reached eighty degrees, by the time I hiked out of the canyon at 4PM. I chose my Loomis two piece five weight for my casting tool. Somehow I strained my neck while camping over the weekend, and I felt like the short rod would provide less strain to the neck area, when I lifted the line to make a cast. Also, I planned to toss a double dry fly, and the slow action Loomis is well suited to that task.

Corner Pocket Was Productive

By the time I hiked down the trail to my chosen fishing spot, it was 11:00AM. I selected a peacock hippie stomper from my MFC fly box, and then I added a parachute green drake on a twelve inch dropper. It was slow going initially, as I prospected some very attractive pools and pockets with nary a look, but I persisted with the double dries, and eventually I was rewarded for my patience. In the 1.5 hours before lunch, I landed ten trout, and this included a couple very respectable brown trout and rainbow trout. Initially my best results came from pockets and runs along the edge of the creek, but as time passed, the fish in the larger and more obvious locations began to respond as well.

Plump Rainbow

Early Brown Trout

There was very little strategy on Wednesday, August 28. I fished the double dry consisting of the stomper and paradrake for the entire time, until I stopped at my favorite pool, but more on that later. The parachute green drake was the more productive of the two flies, and I estimate that the catch ratio was 70% paradrake and 30% hippie stomper. The desirable pair of flies in the eyes of the trout accounted for forty fish on the afternoon. The flies were not perfect, as an abundant quantity of refusals and rejecting looks were a significant part of the story.

Photographed Purely for the Color

Along the Rock

Between 12:30PM and 2:30PM, however, the fish were definitely tuned into the green drake. I spotted a handful between 1PM and 2PM, but they were not available to trout in great abundance, I attributed much of my success to trout having long memories for western green drakes.

Long for These Waters

What sort of water was the most productive? Deep slots and potholes around exposed boulders produced some surprisingly nice fish. Also, the lip of pockets and runs, where the water began to accelerate and sluice over the lip was another favorite. On several occasions I gave up on the drift and made a lift just prior to the fly racing over the lip, and I found myself attached to a fish. This always amazes me.

Ooh La La Pool

Brown Trout Perfection

By 3:30PM I decided to call it a day, however, on my return hike I could not resist the temptation to make a few casts to my favorite pool. Upon my arrival I lobbed ten casts with the double dry, but these selective fish were having none of it. While I observed, a flurry of rises commenced, but their target was so small that I was unable to determine the preferred food item. I began to cycle through fly changes, and I replaced the parachute green drake with a size 18 deer hair caddis. It became apparent that caddis was not the answer. Next I knotted a Jake’s gulp beetle as the trailing fly, and it was equally ignored. Finally in frustration I stretched my net seine across the mouth, and I held it in the current for three minutes. When I examined the contents of the seine, I noticed some nymph casings and a crippled mayfly with a dark olive body. I concluded that the fish were responding to a blue wing olive hatch, and judging from their aggressive feeding, I guessed emergers. I replaced the beetle with a soft hackle emerger, and I dabbed the body with floatant to fish in the surface film. This generated a couple looks, but no action. Next I replaced the soft hackle emerger with a CDC blue wing olive, and once again the fish ate naturals in close proximity to my fly. I finally threw in the towel and moved on.

Tucked Under Branches

The prevalent size of trout on the day was eight to nine inches, but I was pleased to land five trout in the twelve to thirteen inch range. Two browns and one rainbow stretched to the upper limit of the size range. The weather was ideal, and the flows were reduced more to my liking, and green drakes were favored by the wild trout. I could not have asked for a more enjoyable fly fishing outing.

Fish Landed: 40

Time: 11:00AM – 3:00PM

Location: Between East Portal and Rollinsville

South Boulder Creek 08/26/2024 Photo Album

Jane and I reserved a campsite at Kelly Dahl campground from Sunday, August 25 through Tuesday August 27. We invited a group of friends to join us, and six agreed to camp along with three who planned to make a day trip on Monday, August 26. Two of the six who committed to overnight camping had to withdraw due to a family medical issue, so four of us arrived on Sunday and set up camp at sites 23 and 24. We scrambled to assemble the canopy and tents, before rain commenced on Sunday, and we were all thankful for the canopy cover that made dinner and evening card games comfortable.

Canopy Ready for Rain

Most of the group planned to complete a hike at the East Portal on Monday, but I tossed out the idea of fly fishing. Our friends, Howie and Sandie, decided to accompany me on the fly fishing venture. The only decent option within close driving distance of Kelly Dahl was South Boulder Creek between the East Portal and Rollinsville. I fished this section of South Boulder Creek a few years ago, so I decided to give it another trial. I had low expectations, but I hoped that Sandie and Howie could experience catching a few wild trout from the small stream.

We arrived at an obvious public stretch of the rapidly flowing creek by 10:30AM, and we were positioned on the stream casting by 11:00AM. Howie and Sandie decided to share a rod and alternate, and they were prepared before me, so they cut down to the creek first. Howie began with a Charlie Boy hopper and a beadhead pheasant tail nymph.

For the start of my day I bet on a tan size 8 pool toy hopper and a salvation nymph. I ambled along the creek for fifteen yards, before I slid down the bank and crossed the creek.   I began working up along the opposite bank, and I managed a small eight inch brown trout in the early going along with a couple browns below the six inch cut off that I require in order to count.

Fast Water Ruled

After the early success, I endured a fairly lengthy dry spell with quite a few refusals to the pool toy hopper. The nymph was totally ignored, so I added a 20 incher below the salvation to generate deeper drifts. The creek was tumbling along quite rapidly due to high gradient and flows that I suspect were above average for the last two weeks of August. My deep nymph strategy was rejected completely by the resident fish, so I crossed back to the road side of the creek,

I decided to look for Howie and Sandie to suggest that they try a different approach, but they were not in sight. I walked down a nice path that followed the top of the bank in an eastward direction, and eventually I found them. I rounded them up, and we moved back upstream beyond the parking lot that contained many worn paths and that screamed heavy fishing pressure. For the remainder of the afternoon we progressed upstream along the left bank and alternated among the three of us. I switched to a peacock hippie stomper and a size 14 light gray caddis, while Sandie and Howie utilized a Chernobyl ant and a size 16 parachute Adams.

During this time frame Howie had a slap at the trailing Adams, but he never saw it. On one other occasion, however, he spotted the take and set the hook and momentarily felt the weight of a brown trout. Unfortunately it quickly popped free and swam to freedom.

Best Fish of the Day

During my turns I tended to claim the places that looked fishy, but required superior casting skills. This entailed quite a few casts across the main center current to slower moving shelf pools. I executed mends and reach casts to counter the drag of the main current on my fly line. In a few cases my mend caused the double flies to skip or jump, and the fish responded with a refusal or look.

Same Fish Extended

I did manage to hook and land three browns during my turns. All of these trout consumed the deer hair caddis, and they were all in the eight to ten inch range. By 2:30PM some dark rain clouds slid across the sky and settled above us. I was wearing my raincoat for warmth, and it was a fortunate choice, as we paused for ten minutes under a cluster of large evergreen trees, as the skies opened with a curtain of rain. After the precipitation ended, we resumed for a short while, but I could sense that the troops were ready to head back to the campground for an early start to happy hour.

We called it quits, but left our waders on, as we drove another five miles to the East Portal. Another angler stopped to chat with us, as we fished along the creek, and he informed us that he fished near the East Portal with decent success on dry flies. One of the spots he mentioned was by some large rock piles. We found the rock piles before arriving at the East Portal parking lot, so I parked and crossed two sets of railroad tracks to have a look at the creek. It was interesting and perhaps worth a future try. The gradient appeared to be a bit less steep, but there was more tight vegetation along the banks to thwart efforts to move upstream.

My fish count was below average, but that was attributable to sharing the stream with Howie and Sandie. My expectations were low, but the high gradient limited the number of fish holding lies, and it represented quite challenging conditions for two fairly novice fly anglers. The combination of high gradient topography and small fish make South Boulder Creek in this area a marginal destination choice in my opinion.

Fish Landed: 5

Time: 10:30AM – 3:30PM

Location: Below Gross Reservoir

South Boulder Creek 08/23/2024 Photo Album

After three straight days of fly fishing early in the week, I took a break on Wednesday and Thursday, but by Friday I was eager to resume my August blitz. My trip on 08/16/2024 to South Boulder Creek was quite successful, and I was very anxious for a return visit. I was fairly certain the green drakes were still active, and I attempt to take full advantage of this once a year occurrence. The continuing heat wave in Colorado was another reason to seek out the cold water releases from Gross Reservoir.

Five or six cars preceded me to the Walker Ranch Loop trailhead, and I prepared for a day on the creek with my Loomis two piece five weight. Slow action, short length, and fast assemblage played into my choice. The temperature was 66 degrees, as I began my hike down the Walker Ranch Loop trail. On my way to my chosen starting point I passed a pair of anglers “practicing” in a spot, where I needed to wade in order to make farther progress. I excused myself, and we exchanged intentions, and they informed me that they planned to move downstream as well.

Early Success

By 10:30AM I arrived at my planned starting point, and I configured my line with a parachute green drake size 14. During my previous visit, I landed all my fish on this style of green drake, and I was hoping for a repeat engagement. Within the first five minutes I landed a small seven inch brown trout that rose and sipped the paradrake in a narrow band of slow moving water directly above my casting position. This event instilled a bit of optimism in my outlook, but then the trout decided to teach me a lesson, as they ignored my casts for a short period. I was spoiled from my earlier trip, and I quickly lost patience, so I modified my approach and added an olive ice dub body hippie stomper as the forward fly followed by the parachute drake.

Small Hidden Pool Produced

The stomper/paradrake combination initiated a frustrating run of refusals and very brief hookups. I counted five in a row. Among them was a fish that slipped free, and the pent up energy in the rod whipped the flies into a tree limb high above me. One can imagine my anger. I flicked the rod away from the flies, and this impulsive but dangerous action, resulted in snapping off two flies. I paused to replace them, but when I was done, I thought I spotted the white wing of the hippie stomper in a dead branch. I moved to the base of the cluster of tree limbs, and I was able to bend the branch down to retrieve my flies. There was, however, a slight problem. The white wing was, in fact, a small dense cobweb! I felt pretty ridiculous, but I gazed back at the next limb that was higher up, and I surmised that I might be able to bend that one down to a recoverable level as well. I did so, and what do you think I found? No, not another cobweb, but the two connected flies. I stuffed them back in their proper resting places in my fly boxes.

Delicate Wildflowers

By noon the fish count rested on a meager total of four, and I was beginning to question my decision to fly fish on South Boulder Creek. The two anglers that I encountered on my hike in appeared, and they proceeded to move below me, but by noon they were within sight. I decided to forsake the section that occupied my morning and move upstream, but when I advanced forty yards, I spotted another young fisherman working on his line in another spot that I needed to wade through. Once again I excused myself and quietly passed by. In retrospect the morning section of the creek was narrow, and the 122 CFS flows created only a few truly promising lies for trout.

Just a Nice Brown Trout

I moved above the angler that I just passed and found a place, where I could battle through some dense branches to regain access to the creek a fair distance above the other fisherman. In this area the stream spread out more, and this offered more side channels and pockets of moderate current velocity and moderate depth. These were the characteristics that attract trout. I progressed upstream through this section from noon until 2:30PM, and I moved the fish count from four to twenty-four. Yes, the catch rate improved dramatically. The hippie stomper and parachute hopper remained in place during the early going, and the flies delivered positive results, but refusals and tentative bites resulting in quick long distance releases plagued my fly fishing outlook. I decided to rotate through other green drakes styles. First I tested a Harrop hair wing green drake, and it provided a fish or two, before it broke off, as I played and released a rainbow trout that crushed the leading stomper. The hair wing was not doing much, so I opted for a size 14 green drake comparadun with a large fan hairwing.

Center Stream Pocket

The stomper/comparadun combination remained on my line until 2:30PM, and the comparadun accounted for roughly 60% of the landed fish with the hippie stomper delivering the remainder. By 2:30PM the sky darkened, and I heard distant rumbling, so I retreated to the shoreline and pulled on my rain shell. I completed this move in the nick of time, as the spigot got turned on, and drenching showers ruled the canyon environment. I backed into a small space beneath a dense evergreen and waited for the curtain of rain to end. A couple times the rain paused, and I stepped back to the creek only to be scared back to my sheltered enclave by thunder and lightning. Finally the western sky got brighter, and I spotted a glimmer of blue, but dense gray clouds predominated above. It was at this time that I observed two flashes with almost instantaneous loud rumbling, and this suggested that the lightning was in close proximity. I snugged back against a rock wall and impatiently awaited the end of the lightning and thunder.

One of Several Nice Rainbow Trout

Finally the thunder became distant, and blue sky ruled above me, so I resumed fly fishing. The temperature plunged during the storm, and I was quite pleased to have my raincoat for additional warmth. I was relatively close to two very attractive pools, so I progressed directly to them. At the first one I executed some long casts across the main current to the shelf pool along the far bank. and a brown trout dashed to the surface and grabbed the comparadun. At the next pool I could see fish finning at the tail and in the right side pool. For the most part they were immune to my efforts to hook them, but one overly aggressive brown snatched the hippie stomper.

The Ribbon of Water Along the Rocks Was Targeted

As I looked on, quite a few fish began to slash the surface, but the object of their actions must have been small, because I was unable to determine the food source. I cycled through the usual suspects which included a CDC blue wing olive, a size 16 light gray comparadun, a size 16 cinnamon comparadun, and a size 18 parachute black fur ant. Finally the ant duped a brown trout to bring my total to twenty-seven. I seined the water with my net seine, but all I could collect were some empty nymph husks. I tried a Craven PMD emerger pattern, but that was not the answer. In a last ditch effort to match the hatch, I removed the double dries and tested a size 20 CDC blue wing olive with a fairly large and fluffy wing. Nothing. As this hatch matching escapade evolved the water became quite tinged with sediment, but the trout seemed to ignore the turbidity, as they continued to feed.

I surrendered to the pool and thanked South Boulder Creek for a twenty-seven fish day and completed the hike back to the parking lot. As I strolled along the trail, the sun reappeared and warmed the atmosphere and this weary angler, and the clarity of the creek improved dramatically. Apparently the slug of run off moved fairly quickly through the narrow canyon. My goal of meeting the green drake hatch was achieved, although the fly fishing was not the free and easy experience of August 16. Friday was a great example of why I carry five different western green drake patterns. The quality of the fish was decent, as I landed a couple thirteen inch rainbows and several healthy twelve inch brown trout. The fish of South Boulder Creek are all wild, and they show off their vivid colors and patterns quite well. Will I register another South Boulder Creek green drake day? it is getting late, but stay tuned.

Fish Landed: 27