Here is a good Utah Fly Fishing Report on the Ogden River and Weber River from Owner of Fish Gear Tyler Skeen.
Ogden River was pretty good until they decided to blow it out again and the Weber River a couple weeks ago was looking clear and low and now its brown and I mean brown and somewhat high.
However, with that said, the Ogden River is a gem if fished correctly. During the mid-day when the heat is on; hares ears, prince nymphs, pheasant tails and zebra midges are a staple for fish. The canyon is probably your best bet, but be aware of low hanging trees as they will make your time on the water most challenging. When it cools off and turns to dusk – Caddis are out in the thousands. A dry fly wonder. (Other dries that work well: Adams, Griffiths Gnat, Stimulator Caddis) Fish to be had on the Ogden – Browns, browns, and more browns. If you fish below the canyon – you will be catching planted rainbows and more browns. If you want a more secluded fishing experience, you can always fish the south fork of the Ogden, which flows from Causey Dam to Pineview. In this section you will catch wild cutts and you have a greater chance of landing some big browns – but make no mistake – these fish make you earn your catch on this section. Very pretty to fish in the fall.
The Weber River is very similar. A little different variety in dry flies…PMD’s, Humpys, Royal Wulff, Hoppers, Ants, and don’t forget your variety of streamers. The weber holds some very very large fish so streamers are an excellent way of luring some of those big browns to take. Now the weber is similar to the Provo and is divided into really 3 sections. Upper Weber which starts in the Uintas and flows down through Oakley and Peao into Rockport Reservoir. Much of this section is private so be sure to pay attention. The other section is the Middle- Rockport to Echo which is basically the town of Wanship to Coaville. This section is similar to the Middle Provo. Some private property as well, however access is abundant and some of the most scenic stretches are along this stretch. The lower weber is from Echo down to Riverdale. The lower section can also be broken up into subsections but I wont get that detailed. In this section there is also a lot of private property. This section is where the infamous law suit started not too many years ago. Fish to be had; Rainbows, Tigers, Whitefish (big whitefish), and of course Browns.