Cache la Poudre River – 07/16/2018

Time: 10:30AM – 3:00PM

Location: Pingree Park above bridge on CO 14

Cache la Poudre River 07/16/2018 Photo Album

I did not fly fish over the weekend, but I did some research to determine my next destination. I used the search and find capability of my blog to ascertain the dates, when I encountered green drakes on front range streams. I was rather certain that early to mid-July coincided with the presence of green drakes on northern Colorado streams, and this exercise confirmed my recollection. I met green drakes on the Cache la Poudre River on July 13, 2017 and July 15, 2016. The North Fork of the St. Vrain produced green drake activity on July 28, 2010 and July 23, 2006. Brief emergences enabled some dry fly action with green drakes on the Big Thompson River on July 18, 2013 and July 18, 2002.

Armed with this historical data I made the drive to the Cache la Poudre River west of Ft. Collins with the hope of rendezvousing with green drakes. I arrived at a pullout along CO 14 at 10AM, and after I pulled on my waders and assembled my Fenwick five weight fiberglass, I hiked east along the shoulder of the highway, until I reached the bridge. Here I angled down a steep bank and began fishing back toward the Santa Fe.

Clear, Cold and Fast

Monday was a warm day with highs in Denver in the upper 80’s. This probably translated to highs in the low eighties in the Poudre Canyon by the time I quit at 3PM. The sky was virtually cloudless for most of my time on the water. The flows remained quite strong, and I never entertained the thought of wading across the full width of the river.

This Stimulator Got It Done Early

I began with an olive-brown size 12 stimulator, and I began prospecting the slow-moving pockets and pools along the left bank. This approach was effective, and I brought eight trout to my net using the single dry fly method. All the landed fish were brown trout, and several extended to the 12-13 inch range. A fish of this size on the Cache la Poudre is worth celebrating.

Another Large One By Poudre Standards

I was curious whether a dry/dropper technique might produce more and larger fish, so I used my nippers to remove the stimulator and switched to a size 12 Chernobyl ant trailing a salvation nymph. Several trout nipped the Chernboyl but easily escaped my hook set, and then an aggressive feeder assaulted the black foam attractor, and I landed number nine. The catch rate with the dry/dropper lagged that of the olive stimulator, and I was about to revert to the productive fly of the morning, but then I decided to experiment with a green drake. I selected a Harrop hair wing green drake from my box and tested it in a long smooth glide, and after five casts a decent brown surfaced and smashed the green drake imitation to increment the fish count to ten.

Delicious Shelf Pool

It was around this time, that I found myself next to a nice rocky area in the sun, and it was after 12PM, so I paused for lunch. After lunch the Harrop hair wing yielded several refusals, so I decided to switch to a size 14 green drake comparadun with no ribbing. This offering was quite popular, and the fish count swelled to seventeen on  the appeal of the green drake with the upright deer hair wing. The comparadun was more difficult to follow than the hair wing, and it necessitated frequent dunkings in the dry shake canister; however, when properly presented, it was very effective. Most of the green drake munchers were typical brown trout in the nine to eleven-inch range with one outlier that measured twelve inches. By 1:30 I reached a section along the south bank characterized by a long deep shelf pool, and this type of water failed to produce on Monday, so I exited and hiked back down the road to the car.

My tennis elbow was acting up, and I blamed it on the fiberglass rod with a wider grip than I was accustomed to, so I stopped and switched to my Loomis five weight. As I advanced on the south shoreline, I craved an opportunity to sample the nice pockets and pools along the north bank, so I ambled east on CO 14 once again, but this time I crossed the bridge and circled along the opposite bank.

Afternoon Beauty

During my entire stay on the river to this point, I observed only one green drake, and I sensed that the fish were not responding to my green drake offering with the zest that they demonstrated earlier. I decided to try a dry/dropper approach once again, and my afternoon lineup included a yellow fat Albert, size 12 beadhead prince nymph, and a salvation nymph. The prince was intended to imitate the nymphal stage of the green drake, and the salvation was geared to suggest a pale morning dun nymph. Whether the fish interpreted them this way is unknown, but the next 1.5 hours produced ten additional fish to raise the fish tally to twenty-seven. Two aggressive feeders pounded the fat Albert, and a brown trout nipped the salvation, while the remainder grabbed the prince nymph. Perhaps the stream residents were accustomed to seeing green drake nymphs and therefore responded to the prince as a close facsimile. Two of the final ten trout in my net were rainbows including a ten incher that crushed the fat Albert in some faster riffles.

By 3PM the air temperature was peaking, and I felt very sluggish after a day of rock climbing and battling through overhanging branches. I reeled up my line and called it quits. I was also conscious of the request to voluntarily not fish during the hottest afternoon hours of the day in order to avoid stressing the trout in elevated water temperatures.

Two Blue Spots Are Unusual

Monday was a fun day. I landed an abundant quantity of trout, and I fulfilled my goal of successfully fishing green drake dry flies. I only noted one natural, but the fish seemed tuned into my green drake comparadun imitation. Competing anglers were scarce, and I explored the north side of the river with some success.

Fish Landed: 27