The Wind & Lower Big Horn River from Boysen Reservoir
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The Wind & Lower Big Horn River from Boysen Reservoir Location: Not so far out of Yellowstone Parks East side, in the NW quadrant of Wyoming, lies the town of Thermopolis (N43.64585 W108.21130), the kick-off point for reaching the Fishery that includes a section of the Wind River and the Big Horn River, joined at the famous Wedding of the Waters. Traveling out of Casper, Wyoming, take US Hwy 20 North to Thermopolis and in doing so, you will travel up a part of the Fishery through the beautiful Wind River Canyon. The other direction of travel is to come out of Cody, Wyoming, down State Hwy 120. Either direction of travel is about 90 miles. Description: Narrative by Mike Mufich of The Humble Fly This Fishery includes a section of the Wind River from the Boysen Dam (N43.40732 W108.17070) through the Wind River Canyon, thence continuing to the Wedding of the Waters (N43.58908 W108.21604) and on into the Big Horn River up through the town of Thermopolis, then continuing about nine miles beyond the town. Total fishery length is 30 miles. The fishery can be broken down into four segments covering walk/wade/float fishing: 1. Segment One winds from the Boysen Dam through the Boysen State Park campgrounds, and finally ends at the start of the Wind River Canyon. This is a walk/wade section. 2. Segment Two is the Wind River Canyon itself, which is mostly a wade with a little bit of walk to it. 3. Segment Three runs from the Wedding of the Waters boat ramp to the Hot Springs State Park boat ramp and is usually a float section. 4. Segment Four is from the Hot Springs State Park boat ramp down-river another nine miles. These four segments share commonalities while still having some distinct differences in how they fish and whats in them. They all share a really good fishing experience. An interesting note here is © 2021 https://www.the-fisheries.net ALL Rights Reserved that the Wind River becomes the Big Horn River at the Wedding of the Waters. Look closely and you can see the line where it changes over from one to the other. Hey, just kidding!!! What does occur at this point is you move from being on the Wind River Indian Reservation to not being on the reservation. The reservation area requires a special permit to fish it. The permit can be obtained from a number of places such as local hardware stores and generally any tackle shop in the town of Thermopolis. Given the proximity of Thermopolis, three miles, it is an easy place to pick up a permit. Thermopolis also boasts quite a few other attractions to go with this Blue Ribbon Fishery. It is home to the largest mineral hot springs in the world. The springs are located in Hot Springs State Park right in town and offer recreational swimming, slides and other water fun attractions at the swimming center. There are a number of good small eateries at the hotels, in town and at the airport, along with a number of national franchise fast food places. &Pretty good for a town of a little over 3,500 folks! When you come, make hotel reservations ahead of time. The popularity of the Hot Springs Park for family activities and other area attractions, along with the fishing, fill up the rooms pretty quickly. This fishery is primarily a fly fishing area, although other methods are occasionally employed. Most spin fishing or bait casting is more suited to the Boysen Reservoir itself. The important items of note in successfully working this fishery are to 1.) Use good conservation methods to promote the fishery, 2.) Use responsible angling methods of single hook rigs with the barbs taken off, and 3.) Understand working on moving water. When taking on these waters, the first thing that jumps to mind is seasonality and with the seasons, hatches. January through February is primarily a midge time, with nymphs in play as a second offering. Sow bugs in traditional pink along with scuds do well. Olive and tan colors can work as well. As the weather warms up slightly in the day, it is possible to see Blue Winged Olives (BWOs) on the water, and streamers such as the wooly bugger can bring in results. March and April will let you still use the sows, scuds and midges but the real explosion especially in the front end of March is the BWOs. May brings on the Tricos. Usually the Trico bloom is from around 5 a.m. to 10 a.m. The bottom bugs are still there, too, so stay with that as well. Summer will see the BWOs and the Tricos, just not as heavy. Also, during this time, the water level may rise which can slow down the dry fly effort but is still good for hoppers, beetles, and ants. Plus, the mayflies are flitting. September and October bring the return of the BWO explosion, and then it's back to the usual stuff described above of the winter season. Keep in mind that in the winter, snow, ice and freezing temps can plain put an end to fishing some days. Its a good idea to check the weather and talk to some guides and fishing shop folks about outlooks. As you start through the Segment One, up in the Boysen State Park area, the Fish Per Mile (FPM) estimate is 2,400. These are slow-moving waters but still are powerful and can be dangerous to the inattentive. Finning their way through the current will be browns, rainbows and cutthroats. Average lengths run from 16 to 19 inches, with up to 34-inch catches possible. You can hook 'em, © 2021 https://www.the-fisheries.net ALL Rights Reserved but the real chore is getting them into the net. Fishing through this blend of big fish, strong lines and tippets will work just fine on nymphs and the like, so put away the 5X. You don't need it and it will probably break off anyway. As mentioned earlier, this is a walk/wade stretch. There is not a lot of structure and you will get around with reasonable effort. In Segment Two, the Wind River Canyon, the water really gets moving. The big boulders, and the really big boulders, are now present along with some very large fish. Typically, when you can get one on, its going to be over 20 inches. Along with the standard stuff, this is a good section for putting a stone fly on. However, streamers are probably the best in this section. Nymphs will work sometimes. Come summer, try cicada imitations, big attractors, hoppers and other big stuff. The FPM is likely around 1,600. Here are a few stops in the Canyon that should work for you. Parking is good and access is fairly easy to water with good features such as riffles, channels and structure. The Farm House N43.47212 W108.17025 Roadside Tables N43.49277 W108.15874 Two Covers N43.53715 W108.18991 Remember, this section requires a special permit for fishing on the reservation. Segment Three runs from The Wedding of the Waters (N43.58908 W108.21604) to Hot Springs State Park (43.65497 W108.19859) and boasts a wider channel and slower water. The structure in the water column is not so diverse but the FPM rises to about 2,200. This is great dry fly territory and just plain fun to fish. This is a float area that can offer walk/wade, but a drift boat ride is a better deal for productivity and better coverage. Segment Four runs from the Hot Springs State Park boat ramp, about another nine miles downstream. This would be 13.1 miles North from the Thermopolis City sign on Rte 20. At the boat ramp point in the Hot Springs State Park, the hot springs flow into the river creating a major jump up in temperature. This is not so good for summer fishing but does amazing things for the winter fishing. While the FPM is only about 800, the fish size is pigs unlimited. The ride doesnt offer so much scenery but you are pretty much looking at the water, so who cares? This section is not too good for walk/wade, as it is almost all private land, but a drift boat is OK for passage and the best way to fish it regardless. Bottom line: Fish it for a few hours or a few days. You can pick your challenges and opportunities on the Wind River/Lower Big Horn Fishery, a unique piece of geography and history. Whether you take yourself or get the advantage of a professional guide, you are in for a treat almost any time of year. Size: The Fishery runs a total of about thirty miles and has several public access points in the first three segments but limited public access on the fourth segment. Weather: © 2021 https://www.the-fisheries.net ALL Rights Reserved Mean Temperatures: Jan 2o, Feb 27, Mar 37, Apr 45, May 54, Jun 63, Jul 70, Aug 69. Sep 59, Oct 47, Nov 22, Dec 22. These are mean temperatures for the days. The area generally has good and pleasant weather. Daytimes in the summer can get quite warm, into the nineties, but still cool down quite a bit at night. As the winter months approach, temperatures can really take a nose dive. Winter can also bring snows which shut down the highways so planning ahead is important.