Monthly Archives: May 2025

Arkansas River – 05/09/2025

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Time: 11:30AM – 3:00PM

Location: Buena Vista Area

Arkansas River 05/09/2025 Photo Album

I am not sure if the source of my euphoria on Friday, May 9, 2025 stemmed from the continuing outstanding productivity of the olive perdigon or the discovery of a new section of the Arkansas River. With highs in Denver predicted in the seventies, I checked potential fly fishing destinations and settled on the Buena Vista area of the Arkansas River, where the high was forecast to peak in the low sixties. On the previous week I made the drive to the same area, and I enjoyed a very satisfying day of fly fishing, so a return visit appealed to me.

New Water

Every year at this time that spans mid-April until early May, I chase the famed Arkansas River caddis hatch, and that also played into my planning. The fly shop report indicated that the hatch was centered over Salida after the recent cold snap. I surmised that progression to the Buena Vista area was a possibility.

Impressive Start

Love the Spots

I set my Google maps app to a new spot, and I gambled that there was fishing access. The map that I was using suggested that was the case, but there was a risk that I was wasting time seeking out an unknown fishing spot.

Looking Ahead

I arrived at the designated test location by 11AM, and by the time I pulled on my fleece hoodie and raincoat and assembled my Sage R8 four weight and hiked a short distance to the river, it was 11:30PM. I was flying blind, and I had no idea where to park, how far away the river was and what the fishing conditions were like. Fortunately I quickly found the designated parking lot, the walk to the river was short, and the section of the river in front of me looked amazing.

Sole Rainbow

I began my quest for trout with an amber ice dub body chubby Chernobyl, an iron sally and a bright green caddis pupa. I debated using the olive perdigon, but I wanted to experiment with the caddis pupa first. On the first two casts in a deep slot behind a boulder, I hooked and landed two respectable brown trout in the twelve to thirteen inch range; and, needless to say, I was impressed. Between 11:30 and noon, when I found a nice flat rock for my picnic lunch, I added two more browns to my netted fish tally to boost the total to four. Was this for real? All the late morning trout grabbed the iron sally.

Narrow Run Along the Bank Produced

After lunch, however, I endured a brief dry spell, so I reconsidered my offerings and exchanged the heretofore unproductive caddis for the olive perdigon. It was a master stroke. For the remainder of the day the chubby Chernobyl and perdigon were constants in my lineup, and my only change was to swap the iron sally for a go2 bright green caddis pupa midway through the afternoon.

Wide Moderate Depth Riffle Was Prime

Check Out All the Subsurface Rocks

What an afternoon it was! the fish count ballooned from four to thirty-one. In total the chubby Chernobyl accounted for five, the iron sally registered the first four, one fish fell prey to the caddis pupa and the remaining twenty-one hungered for the olive perdigon. I never spotted a caddis fly, but during two extended periods of heavy cloud cover, I noticed a few blue wing olives, but not enough to generate any surface feeding. Apparently there were active baetis nymphs, and the olive perdigon was a close enough representation. Another testament to my good fortune was my ability to fish for three plus hours without losing a fly, and with tungsten beads going for one dollar each, that was good news.

Big Flapper

The river was in prime condition. The flows in Nathrop downstream were around 400 CFS, and crystal clear was the clarity status. I fished upstream along the left bank, and prospected all the deep slots, troughs, pockets and riffles. All these types of structure produced, but the most dependable locations featured the tail end of deep slower moving slots just before the adjoining currents merged and accelerated. A lift at the end of these drifts seemed to be a deadly technique. I love the feeling of confidence, when I lock on to productive flies and identify the most likely fish holding lies. Before casting I could more or less predict the result, although I covered the water thoroughly and produced the occasional nice fish from fairly marginal spots.

Chubby Again

Once again I failed to greet the caddis hatch, but in exchange I discovered a new favorite section of the river, and I reinforced the effectiveness of the perdigon style of fly. I typically dislike tying flies during fishing season, but I may have to deviate from this position, and tie up some more. Other than the expense of the beads, the perdigons are a straightforward tie with minimal materials. A thirty-one fish day is very appreciated, and although the largest probably stretched the tape to thirteen inches, quite a few were in that twelve to thirteen inch range, and all but one outlier rainbow were marvelous vividly colored wild fish. Could I sneak in another day on the Arkansas before the run off thwarts my success? Stay tuned.

Fish Landed: 31

South Boulder Creek – 05/04/2025

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Time: 11:15AM – 3:00PM

Location: Below Gross Reservoir

South Boulder Creek 05/04/2025 Photo Album

I normally avoid fly fishing on weekends, but on Sunday, May 4, 2025 I made an exception. The weather forecast for Monday through Wednesday of the upcoming week portended adverse fishing conditions, so I made the trip to South Boulder Creek. I kept my eye on the flows below Gross Reservoir, and they remained steady at 45 CFS for more than a week. These flows are a bit low for my preference; however, I have enjoyed success at even lower levels. The high temperature in the canyon was forecast to reach the mid-sixties, so that also played into my decision.

By the time I made the relatively short drive and jumped into my gear and hiked to the creek, my watch displayed 11:15AM. My trip through Flagstaff Mountain Park was slowed by a caravan of cyclists climbing the steep and winding road. Kudos to all the riders who finished the ascent.

Covered in Spots

The parking lot at the Walker Ranch Loop Trailhead was nearly full, but I lucked out and found a recently vacated slot. I wore my fleece hoodie, but I avoided my long sleeve undershirt and stuffed my raincoat in my backpack. The temperature at the parking lot was 61 degrees. I have been using Pinecliffe, CO in Weather Underground as my proxy for weather at South Boulder Creek, but I concluded that the higher elevation mountain village probably understates the air temperatures in South Boulder Creek below Gross Reservoir.

Narrow Ribbon of Fishable Water

To begin my quest for trout I began with a peacock size 14 hippie stomper and then added an olive perdigon on a three foot dropper. Beneath the perdigon I knotted a size 20 salad spinner midge pupa imitation, and I began to probe the likely fish holding lies. In a short amount of time I landed a small brown trout barely longer than my six inch minimum, and it grabbed the perdigon.

Stripe Separate from Cheek

As I began my move to the next attractive spot, I noticed two anglers not more than thirty yards above me. I did not pass another fisherman during my entire inbound hike, yet two competitors showed up within a stones throw of my position! Needless to say I was disappointed, so I stripped in my line and secured it and circled around the invaders of my sacred space.

A Brown Joins the Fun

I hiked .25 mile to give them space, and then I angled back to the creek in a place where I enjoyed decent success in the past. I once again began to probe the pockets, runs and riffles; and I added three rainbows to bring my fish count to four by lunch time a bit before noon. During this time I abandoned the salad spinner and replaced it with a beadhead hares ear nymph and a bright green caddis pupa, but all the action came on the olive perdigon and hippie stomper.  I quickly munched my sandwich and carrots, and then I resumed my prospecting, but guess who I spotted thirty yards above me? It was my nemeses. I saw one of them look back, and they spotted me, so they quickly moved out of sight. I made a mental note of where they were first noticed, and then I fished to that spot and pondered my next move.

Nice Bankside Run

I suspected that they exited and left the next stretch undisturbed, but I could not be sure, so I once again cut over to the trail and worked my way up the path. I found them just downstream of my favorite pool, so I stealthily bypassed them and hoofed quite a distance before re-entering the creek. I estimate that I hiked at least half a mile to allow them space.

As I recall, the fish count was now at six, and during the remaining time on the water, I elevated it to seventeen. The hares ear and caddis pupa failed to generate any action, so I replaced them with a sparkle wing RS2, and I kept the hippie stomper, perdigon, RS2 combination in place for quite a while.

Scene of Rising Fish

At 2PM I approached a gorgeous long pool with a deep run flowing down the center. Just before arriving, I experienced quite a few refusals to the hippie stomper, so I decided to remove the nymphs and transition to a double dry with the hippie stomper and a size 16 olive-brown body deer hair caddis. The caddis fooled one fish, before it created some refusals, and I began to spot a few random rises. My hunch told me that blue wing olives were emerging, so I replaced the caddis with a CDC blue wing olive.

Brilliant

I persisted with the double dry for the next hour, and I added four more trout to bring the total to seventeen. For some reason the stream residents began to smack the hippie stomper, when it was combined with the tiny CDC BWO.

The Workhorse Fly on Sunday

By 3PM I once again bumped up against a trio of anglers, so I decided to call it a day, and I completed the arduous one mile steep ascent from the creek back to the parking lot. The weather was perfect, and I landed seventeen fish, so I cannot complain. Nevertheless, the size of the trout was lacking, with the largest perhaps in the eleven inch range. Oddly the ratio favored rainbows with probably seventy percent of the pink striped variety. The rainbows more than made up for their lack of size; however, with their brilliant colors and spot patterns. I must admit that the competing anglers were a pain, and I missed my normal solitude enjoyed during weekday stream visits.

Fish Landed: 17

Arkansas River – 05/02/2025

Time: 11:00AM – 3:30PM

Location: Buena Vista Area

Arkansas River 05/02/2025 Photo Album

As I contemplated options for a day of fly fishing on Friday, May 2, I could not erase thoughts of the Arkansas River caddis hatch from my memory. My young friend, Ben, and I visited lower Bighorn Sheep Canyon on 04/25/2025, and although we had decent success, we did not witness the massive caddis event that we were seeking. We saw two caddis during our entire day on the river. Were we above or below the main emergence, or was the caddis hatch perhaps a non-event in 2025?

Clear Conditions

The cool weather early in the week confined me to short trips to the Front Range, so I was open to a longer drive on Friday. The forecast for Friday was only moderately more favorable with highs in the mid-sixties for Denver. I searched around for possibilities, and I identified the Arkansas River with highs in Salida in the low sixty degree range.

Not a Bad Start

Next I researched the DWR site for flows, and the Nathrop gauge registered 360 CFS. That was encouraging. Finally I visited the fly shop web sites, and the local experts suggested that the main body of the hatch was between Big Bend and Rincon in the Salida area. I like the river structure in the Buena Vista area, and the fly shop reported clear conditions, so I decided to make the drive. Buena Vista is a bit closer than the Salida stretch, and I speculated that perhaps the caddis would advance to Buena Vista, and I would miraculously hit the leading edge of the hatch. One can always hope.

Salivating

I departed on Friday in a westward direction and made the drive on US 285 to the Buena Vista area. When I arrived at my chosen pullout, the air temperature was 53 degrees, and the wind was a very significant factor, and it would remain one throughout my day. Unfortunately it was a headwind, and this played havoc with my upstream casts resulting in significant neck and shoulder fatigue by the end of the day.

Very Respectable

Above the Water

I wore my Brooks long sleeve undershirt and added my fleece hoodie and rain shell. For head gear I wore my billed hat with earflaps, and the choice suited me well, when the wind blasted in my face. I strung my Sage R8 four weight, and I ambled downriver for .25 mile. Along the way I saw a large tent, and this caused me concern that I would be sharing my section of the river with another fisherman or group of fishermen.

Slow Current and Depth Were Key

When I arrived at the edge of the river, I tied a size 8 yellow fat Albert with missing legs to my line. I was using the fat Albert as a strike indicator, so I was not concerned about the missing appendages. Beneath the foam hopper I knotted my 2025 favorite, the olive perdigon, and below that fly I added a bright green sparkle caddis pupa. In the first deep run where I cast, I momentarily hooked up with two fish, but then I persisted and nailed a pair of brown trout, before I found a nice lunch spot. One of the morning browns nabbed the caddis pupa, and the other snatched the perdigon.

On Display

After lunch I continued up the river, until I was just beyond my parking space by 3:30PM, and I boosted the fish count from two to eighteen. By 12:45 I concluded that the caddis pupa was not effective, so I exchanged it for a size 22 sparkle wing RS2, and the fat Albert, olive perdigaon and sparkle wing RS2 remained in place as my offerings for the rest of my time on the river.

Portends Success

Of the eighteen fish landed, one crushed the fat Albert, one grabbed the bright green caddis pupa, and four chased and nipped the sparkle wing. All the remaining trout favored the perdigon, and it was a testament to how effective the simple tungsten bead fly has become to my spring time success. All but one of the trout were browns. The average size of the trout in this section of the river was smaller than that which I experience downstream; however, I did land a couple thirteen inch browns. Most of the other browns and the single rainbow were in the ten to twelve inch range.

Nice One

Surprised by One from the Narrow Space Between Exposed Rocks

What sort of river structure produced trout? By far the best places were deep slots and troughs where currents merged or cushions in front of rocks at the tail of pockets or riffles. I wasted a lot of time fishing marginal spots along the bank, but the fish seemed to place a premium on water depth. I saw only a handful of caddis, so I concluded that the main hatch had not yet reached the Buena Vista area. I did spot a few blue wing olives, but the hatch, if there was one, was very sparse and failed to initiate any surface feeding.

Spots and Colors Superb

I encountered one other angler, and I mounted the steep bank and circled around him. When I approached the tent that I noticed on my inbound trek, I realized that the inhabitant was a gold prospector. We exchanged nods, and he did not seem to care about my presence near his campsite.

Riffle Section

Friday was a fun day, and I was pleased with my destination choice. Did I encounter the famed caddis hatch? No, I did not. Did I experience hot surface action to blue wing olive mayflies? No, that circumstance did not develop as well. In spite of this, I methodically worked my way along the right bank of the river and probed likely spots with my dry/dropper and netted eighteen wild fish. That, in my book, is an enjoyable day, and I beat the onset of snow melt.

Fish Landed: 18