From the Aspen Times (Scott Condon):
A survey conducted by Colorado Parks and Wildlife last fall determined the rivers still have the quantity and size of fish to retain their distinguished designation as Gold Medal Trout Waters, according to Kendall Bakich, aquatic biologist for Parks and Wildlife.
“It turned out really well,” Bakich said. “The numbers we’re seeing on the river are similar to what we’ve seen in prior surveys.”
“We just confirmed that it’s Gold Medal,” she added.
A 13-mile stretch of the Fryingpan River from Ruedi Dam to the confluence with the Roaring Fork River is designated Gold Medal Trout Water as well as the Roaring Fork River from Basalt to the confluence with the Colorado River. All told, that’s a 42-mile stretch.
For years, that’s been the longest contiguous stretch of Gold Medal Trout Water in Colorado. But the local rivers lost their title in January, through no fault of their own. It’s now bestowed on a 102-mile stretch of the Upper Arkansas River from near Leadville south to near the Royal Gorge, according to Parks and Wildlife. That stretch of the Arkansas River earned Gold Medal status after years of efforts to restore the fishery, the agency said…
While the Crystal River isn’t known for its rainbow trout population, it has a larger percentage of rainbows among the overall fish population than either the Fryingpan or Roaring Fork, according to Bakich. The Crystal River has erratic flows that limit fish populations. It usually has high flows for a constrained river in the spring and extremely low flows during late summer and fall because of diversions.
The high streamflow has helped keep brown trout populations lower on the Crystal River.
“Brown trout tend to be lazy,” Bakich said. “They like slower water.”[…]
The survey showed evidence of three varieties of native fish on the Roaring Fork River. Roundtail chub were found near the confluence with the Colorado River. Flannelmouth suckers are found as far upstream as Carbondale, while bluehead suckers are found as high as Basalt, according to Bakich.
More Roaring Fork River watershed coverage here.