Chesterfield Reservoir is the star of the show here. You can catch fish in both deep & shallow water with success. Midging (pupa under an indicator at taking depth) and small leech or damselfly nymph patterns all seem to work. More good news is that Springfield Reservoir was stocked about three weeks ago, those fish have equilibrated, and they are hitting small (black) leech patterns and bead head peacock leeches presented on intermediate lines. A midge pupa under an indicator is sure to work. The fish run 16-19 inches, but holdovers are running over twenty inches. Double digit catch days are common. Sand Creek Pond #4 is still producing for those using damselfly nymph patterns. Daniels Reservoir is good fishing, even though water is low enough such that upper end trees are out of water. Damselfly nymph patterns and leeches in fall colors work. Twenty-Four Mile Reservoir remains very low enough such that approaching the water can be tough going through mud.
Water is low just about everywhere. Chesterfield Reservoir is producing big fish for those fishing deep. Top end of Daniels Reservoir is out of the water, but presenting midge pupa under an indicator is effective. Twenty-Four Mile Reservoir is very low making launching boats a bit of a challenge. Springfield Reservoir remains on the slow side, but look for improvements as we get cooler temps.
Best action at southeastern Idaho reservoirs is at Daniels Reservoir, but larger fish are being caught at Chesterfield Reservoir. Both have low water levels, but cooler weather keeps water temps at good levels for fish activity. Try midge pupa under indicators and look for depth where fish are taking. Small leech and damselfly nymph patterns presented on full sink lines will work deep. Springfield Reservoir is slow fishing, but sure to pick up as newly released fish adjust and water cools. Water levels in Twenty-Four Mile reservoir are very low. Water needs to be impounded for fishing to improve. Fishing at Sand Creek Ponds is picking up thanks to cooler weather. Try midge pupa patterns under an indicator or small leech patterns.
A good cold snap is what we need to bring good fishing around to most of these. Some success is had a Chesterfield Reservoir for those fishing leech patterns deep, and some folks are finding success at the upper end of Daniels Reservoir when using damselfly nymph patterns and midge pupa under indicators.
Chesterfield Reservoir has some good deep water fishing. Tail your leech pattern with a zebra midge, and use a full sink line. In the upper end of Daniels Reservoir damselfly nymphs bring action with responses to midge pupa under an indicator beginning to work. Not much seems to be going on at Springfield Reservoir where weeds make for tougher wet fly fishing. Action on Sand Creek Ponds continues to be good with midge pupa patterns under an indicator working best. Afternoons to evenings are best times to be there. Action on all of these will pick up after we get several days of cooler weather.
The cool weather we have recently is just what is needed to jump-start fishing in our irrigation reservoirs. The upper end of Daniels Reservoir seems to be improving for anglers presenting damselfly nymph patterns. The same goes for Springfield Reservoir where dry damsel patterns are also suggested. Try dry damselfly patterns on Sand Creek ponds, especially during evening hours when large trout are cruising. Look for fishing on Chesterfield Reservoir to be improving as fish begin moving to shallower water with our cooling weather.
During Labor Day weekend expect big crowds at any still waters having easy access. It will be a time to practice courtesy and have patience. Speckled duns are still hatching around mid day to evening at some higher elevation waters such as Aldous Lake and the Sand Creek Reservoir ponds. For Chesterfield and Daniels reservoirs try leech and damselfly nymph patters in deep water. Dry damselfly patterns will be worth trying at Springfield Reservoir. Cooling weather will help bring back action throughout.
Not much action on our irrigation reservoirs right now. One report has some good fishing at Hawkins Reservoir where leech patterns fished deep in front of the dam have produced. Consider carrying a float tube into Aldous Lake above Kilgore to enjoy some gulper action around mid day. Paul Reservoir is producing some medium sized cutthroat for those using small leech and damselfly nymph patterns.
Fishing in many of our irrigation reservoirs is slowing because of draw down making fish run deep to remaining cooler waters. So natural lakes, especially at higher elevations, make better destinations until we cool off in the fall months. Candidates to try now are Horseshoe Lake with its put and take grayling population, Aldous Lake with its cutts in a gulper mood because of mid day speckled duns, and Paul Reservoir with its put and take cutthroat population.