Diamond Fork

Diamond Fork is a small canyon creek in Spanish Fork Canyon, about 20 minutes southeast of Provo and roughly 45 minutes from Salt Lake City. It's the kind of water locals fish on a weeknight while visiting anglers drive right past on their way to the Provo or the Green. The draw isn't size — a 10-to-14-inch wild brown is a good fish here and anything over 16 is a story — it's the combination of easy access and a genuinely wild fishery a stone's throw from the Wasatch Front. Forest Road 029 shadows the creek for miles, so you can fish out of the truck in the lower canyon or hike up toward the Three Forks confluence where the browns turn wild and native Bonneville cutthroat show up.

What makes Diamond Fork fish more predictably than its neighbors is plumbing. It's part of the federal Central Utah Project, and water routed through the Strawberry tunnel system holds the creek to a rough 60 cfs winter minimum, so it doesn't blow out the way a freestone drainage does during runoff. Summer flows near Three Forks run around 45 cfs; in early July 2026 the gauge above Red Hollow read in the mid-30s and dropping — low, hopper-dropper water. It fishes like classic small pocket water: riffles, plunge pools, undercut banks, and short glides. A 4-to-5-weight, a 9-foot leader to 4X or 5X, and a size-14 foam hopper with a beadhead dropper 18 to 24 inches below covers most of it.

One honest warning shows up in nearly every local report: the rocks are coated in slick algae, and this is some of the most treacherous wading in Utah — felt soles or studs and a wading staff are not overkill. Worth knowing too that the lower-to-mid canyon is the trailhead corridor for Fifth Water Hot Springs, one of Utah's most-hiked trails, so it draws real weekend foot traffic; plan on early mornings or weekdays if you want water to yourself. The 2018 Pole Creek and Bald Mountain fires reset parts of the drainage, and DWR and Trout Unlimited have leaned into Bonneville cutthroat restoration in the upper creek and its forks since. If Diamond Fork is off or crowded, the Middle and Lower Provo are 30 to 40 minutes north and the obvious fallback.