Blue Winged Olives on the Green

A Rainbow that took a Blackback WD.

The springtime Blue Winged Olive (BWO) hatch on the Green River in Utah below Flaming Gorge Dam can be epic. It takes place in March-April and provides some of the best dry fly fishing in the Rocky Mountain west.    After years of trying to catch the hatch - I finally did on  Easter weekend April 19th and 20th.  Brad could not go, Carlos could not go, Jeff could not go, nor could Mike go; so I went alone.  Glad I did.

The thing about BWO's is that the hatch comes off if the weather gets rough.  Rain or snow and a bit of wind brings on the hatch.  A sunny day and the olives wait. I was lucky enough to get it all, rain, snow and wind. It's simply amazing to see the bugs start popping up to the surface like clockwork when the weather changes. And then the fish start rising, mostly in the back eddies and along the banks where the duns float lazily waiting for their new wings to dry.  If you watch carefully, you notice a single rise, and then a few more. Before long, you're tying on a dry fly watching pod of a dozen or more rising fish in the clear clear water.

Blue Winged Olive dun - nicely matched by a size 18 parachute dry.

On Saturday April 19th I floated the "A" section of the river.  It extends from the dam, 8 miles downstream to Little Hole.  Though I've fished the Green many times, I'd never floated it before.  The raft is a relatively new addition to my fishing arsenal and I floated it "alone" never out of sight of three to five other boats.  On Sunday I hoped to float the "B" section, but the shuttle is expensive and it adds at least an hour to the drive home so I hiked downstream from Little Hole and fished my way back up.

A nice brown 18" that took a BWO dry in shallow water - perfectly hooked in the neb.

On both days I spent the morning throwing nymphs and wets and did very well.  The water near the dam is colder and there is less BWO activity in that section.  More rainbows than browns in that upper section. I fished classic style winged wets on the dropper and a Black Back Wet Dream on the point.  The BBWD took lots of rainbows in the first couple of miles below the dam.  As I got downstream, the winged wets started taking more fish - and the takes on that fly were aggressive.  In one deep run I had a violent thumping take, and was broken off - perhaps the best  fish of the day.

On both days, by late morning, the weather kicked up and the olives started coming off which meant re-rigging to throw a dry fly.  Its been so long since I did any real dry fly fishing it's hard to relate how much fun it is, especially in the clear clear water of the Green.  What I mean by "real dry fly fishing" is fishing to a mayfly hatch, not throwing monstrous foam terrestrials or midges.  The BWO's are small, but not tiny, a solid size 18 is a good match for the hatch.  

A nice brown that took the dry fly from my raft anchored in the current.

I started fly fishing when I was a graduate student at Cornell. There is a popular bumper sticker in the area that says "Ithaca is Gorges". It's a great place to learn to fly fish with many streams flowing down into Cayuga lake. They support terrific runs of landlocked salmon, spawning browns in the fall, and rainbows in the spring. After building competency in basic skills (including a fly tying course offered through Cornell and taught by Lee Multari) I started driving south to fish the Delaware, the Beaverkill, and the Willowemoc. Hallowed waters in the history of American fly fishing.  These rivers and streams support prolific hatches, from early spring until fall, and it was there I learned the practice of fishing the dry fly.  

Walking back toward Little Hole on Sunday, the weather got bad and the hatch came off again.  I was fishing the pool at the base of a wide riffle when I noticed three or four excellent fish feeding on Baetis duns in water so shallow their backs were frequently exposed.  I tied on a dry and on the third or fourth cast was into a beautiful fish hooked perfectly in the neb.  It was getting late and so I headed back to the truck for the long drive home.  I was happy with y success and what better way to end the day.  

As I walked upstream I met two young anglers frantically fishing to a pod of fifteen or more fish greedily feeding on the surface.  The two young anglers had been there for more than an hour, unable to hook-up. They were throwing size 18 BWO dries. I gave them some advice and headed on, and as I moved further upstream I found a similar pod of fish and decided to try for them. Try as I might, I could not get them to take the dry fly that had just been so successful!  I switched flies, eventually trying every fly in my box that remotely resembled the BWO duns so obviously floating on the surface. Nothing worked.  Eventually, I tied on a size 16 parachute sulphur, a fly that was clearly not a good match.  Inexplicably, I hooked up right away.  After that fish, with a long drive ahead of me, I headed back upstream to the truck. As I walked the bank I was engulfed in a flight of spinners.  If I'd had more time I would haves tested my new theory, i.e., that the fish were taking spinners and not the duns.  The ginger hackle on the larger sulphur pattern that had proved successful was a near perfect match for the wings of a spent spinner.   A masking hatch, not the first time I've run into one, and always a revelation to realize what is really happening.

Final fish of the day that was feeding on spinners.

A Day on the Green

Leopard spotted brown. 

After working every day but one for the past month, I managed to take a day to fish the Green River on my drive home from a conference in Utah.  The Green River below the Flaming Gorge dam in Utah is a world class fishery.  There are reportedly 20,000 fish per mile and I believe it. The "A section" extends seven miles downstream from the Flaming Gorge dam to Little Hole.I'd planned to fish downstream from the dam access but I abandoned that plan because of the crowd.  Instead I drove downstream to the Little Hole access.  The parking lot there was nearly empty when I arrived at 9:30 AM.  It's the takeout for boats floating from the dam and by afternoon it is filled with trucks towing trailers that have been shuttled down during the day.

It turned out to be a very good day. Saddly, I was a week late for the Blue Winged Olive hatch, though a few olives did come off during the day. Even so, the fish were still keyed in on BWO nymphs, and I caught as many fish as I care to in a day. I know because I lost count. If I had to guess I landed 15 and hooked about twice that many.  None of the fish I landed was under 15" and none were over 20".  All of them took my Black Back Wet Dream.

BBWD tied on a size 20 Dai-Riki #135 hook - black flashback.

I tie this version of the WD on size 18-22 Dai_Riki #135 hooks.

Black Back Wet Dream (BBWD)
Hook: size 18-22 scud/pupa hook
Body:  olive or  brown olive thread
Tail: a few fibers from a Wood Duck  flank feather
Thorax: tan/brown dubbing
Wing Case:  Black Holo-Tinsel

In the pictured fly I used 70 denier brown olive Ultra thread, the thorax is SLF Spikey Dubbing in natural fox color and the wing case is black Holo Tinsel.   It is a synthesis of Mark Engler's original WD (wet dream) pattern with a flashier version of Randy Smith's Tyvek Baetis.  Engler's pattern was renamed the WD-40 by  Umpqua when they commercialised it - so as not to offend delicate sensibilities. I do not share their compuction. Many folks assume the WD stands for "wood duck".  Good marketing at work I guess.  Smith's pattern uses a wing case tied from Tyvek that has been colored black.  Mine uses black holo-tinsel.   Feel free to tie as many as you like, it's proving to be an amazingly effective pattern, but also, consider this post a copyright on the pattern should you want to commercialize it.

An eighteen incher.

The Green is primarily a brown trout fishery although I did catch some nice rainbows too, fat fish. These fish are heavily pressured and can be selective feeders.  The water is extraordinarily clear and good sized fish hang on the banks. You see many many of them as you hike up the trail.  It can be a frustrating experience for the tyro to fish to one of these large trout, clearly on the feed, in shallow water.  There is nothing more satisfying than taking one of these fish.  Once again, I complain that the fly shops are pushing the big flies to novices because so many fisherman are reluctant to fish the small flies.  The green has a good hatch of cicadas and a big black foam fly is a common pattern there.  Later in the summer there is good hopper fishing as well.  The fly shops are starting to push those flies though I did not see one cicada nor did I see any hoppers.

I met a man on the trial who I took to be from Oregon since he talked about fishing to spawning rainbows on the Williamson River. These are fish that run up out of Klamath Lake. He seemed somewhat disappointed with the Green in comparison. He said he'd done well the day before but he complained that he'd had to fish size 20 flies.  When I first met him he was fishing a cicada and when I saw him later had a streamer tied on.  By that time he'd had one hook-up.  Somewhat hopefully, he told me how he'd met someone the day before who frequently fishes the Green and who prefers to tie on an Adams or a Royal Coachman. A size 20 Adams would actually be a decent imitation of a BWO and there is a kind of local beetle with red/orange colouring. So who knows, maybe an Adams or a Royal Coachman would be just the ticket.  I expressed my doubts which prompted him to walk on.

Looking down into Little Hole on my way out at about five-thirty.

The Green is a great river.  I caught it yesterday at an in between stage, after the BWO hatch but before the summer hatches.   I promise myself that next year I will catch the BWO hatch.