Other than around spring holes and creek mouths fishing is slow so far this year. Trying creek mouths early in the day is a best bet. Use intermediate lines with standard Henry’s Lake patterns (gold or olive crystals, Gartside wet mouse, mity mouse, beadhead peacock leech, Henry’s Lake renegade).
Flow out of Island Park Dam was dropped to 1310 cfs from near 1700 cfs yesterday. This means easier wading in the river at Box Canyon, Last Chance-Harriman-Riverside and below, but more of a tendency for the river to warm a bit. Early AM spinner falls and later in the day flav and caddis activity still interest fish, but terrestrial insects are coming on. Try fishing during these times for another reason—–fewer visitors. Frequent thundershowers have helped cool things off during evenings.
Flow out of Ashton Dam has dropped a bit (2600 cfs to 2300 cfs) and is subject to irrigation demands. Fishing between here and Chester Dam remains fair with best times for action being early and late in the day. Don’t overlook using terrestrial insect patterns when you visit the river; here and anywhere else.
Because of significant rainfall in the area, Salt River tribs (Jackknife, Tincup, South Fork Tincup, Stump, Crow Creeks) coming out of Idaho and Palisades Reservoir tribs (Bear, Big Elk, McCoy Creeks) are in very good fishing shape. Hoppers are making an appearance on these. Traditional attractor, terrestrial insect, and caddis life cycle patterns will always produce on these streams, some of which host cutthroat trout just as large as in the main stem river.
As is usual this time of year, fishing on the river from Ashton Dam downstream has slowed as waters have warmed significantly. Early AM spinner falls and evening caddis activity can bring some action. Also try streamers at twilight.
Warming waters has slowed fishing on the Madison River within the Park and made fishing dangerous to any fish caught on the Firehole River. Fall River Basin streams are low, clear, and tend to warm up to the low 60s in deg, F. by late afternoon hours. Stealth is the most important aspect for fishing success on these. Best fishing in Fall River Basin is at Beula Lake, and possibly on all of Park still waters. Traditional and parachute Adams (#14-16) on the surface will get attention of gulpers. When/if wind comes up, switch to small leech patterns.
We have word that Montana Dept. of Fish, Wildlife and Parks (FWP) has restricted daytime fishing on the Big Hole and Clark’s Fork of the Columbia and Jefferson Rivers. There are also restrictions on the lower Gallatin (mouth to Logan) and lower Madison(Black’s Ford downstream) because of warming waters. Check the Montana FWP Dept. web site for details.
Fishing great! Flow out of Palisades Dam was dropped in two steps down to 13500 cfs on 7/7 and 7/8. This change will not effect fishing. Water temp coming out of dam is near ideal 55 in Deg. F. At Lorenzo it is 58 in same degrees. Palisades Reservoir is about 85% full which is good news for keeping water in the river for the summer, even though current inflow is about half outflow.
Some golden stones still coming out on the upper river. So bring your favorite dry patterns for them, and if you intend to buy some, be sure to choose ones you can see on the surface where you will fish. Not being able to see a pattern trumps all comments of how effective it is! PMDs are coming out in riffles. As daytime advances, begin with your favorite nymph, then emerger, and finally dry pattern when fish feed on surface.
Here’s where you might help: A 6-wt Winston BIIIX with Nautilus FWX, 5/6 system, fell off a vehicle somewhere between Driggs and Palisades boat ramp. Should be along the road. If you find this, please contact us at 524-7160, or [email protected].
Dry damsels are the way to go almost everywhere. Speckled duns are showing up, too. But you had better hurry because draw-down will take effect soon during this hot and dry summer. Fishing with these on Twenty four-mile Reservoir seems to be holding up well. We have not heard much about fishing success on Chesterfield and Treasureton Reservoirs. Daniels Reservoir is fishing well and will be least effected by draw down because of a minimum pool arrangement. But low water anywhere warms and therefore effects fishing.
We have heard only reports of spotty fishing so far, and the damselfly hatch seems to be diminishing each season. But as the lake warms up, fish will head to spring holes and creek mouths. So start breaking out your intermediate lines and get ready to stake out your early morning positions in front of such as Duck, Howard, Hope, and Targhee Creeks.
Firehole River has warmed to the point that trout within are in danger of exhaustion when being played. That is because geothermal water now makes up a higher component in its flow. Iron Spring Creek and the Little Firehole River have cooler water, so trout from the river seek refuge in these during summer. When cooling atmosphere arrives in September the Firehole River will again be in better thermal shape for trout.
Shoshone and Lewis Lakes are warming meaning fish are heading to deeper water. Go to a full-sink line and get out in the lakes for best chance of success.
Lamar River drainage streams are now in good shape for fishing. Being close to roads, especially lower Slough Creek, Soda Butte Creek, and Lamar River in it meadows, expect crowds of anglers to develop. Avoid the most of these by fishing early (spinner falls) and late (PMDs, caddis, ants & beetles, a few golden stones).
Fall River Basin streams are low and clear, meaning they will be tough fishing during these bright, clear days. Expect best dry fly fishing to take place during a cumulus build-up with increase in relative humidity (the drier the atmosphere, the lesser the aquatic insect emergence), all leading to a thunder shower threat. Hey; this train of thought applies to any of our streams!