U.S. Geological Survey scientists have completed one of the first experimental studies to explore links between climate change and invasive species, specifically how brook trout and brown trout interact with rising stream temperatures. They found that non-native browns limit the ability of brook trout to use warmer water temperatures, By contrast, removin of browns brook trouts’ reach into warmer waters.
Historic UK mining contamination has cut genetic diversity of brown trout
FRISCO — In a study that has implications for Colorado rivers and fish, scientists in the UK have shown that heavy metal pollution from mining has dramatically reduced genetic diversity of brown trout.
SUMMIT COUNTY — There’s no better way to start the summer than by wetting a line in one of Colorado’s sparkling streams or lakes, and to celebrate the start of the angling season, Colorado Parks and Wildlife is once again offering free fishing this weekend (June 1-2).
Each year, the agency designates the first weekend in June as the only two-day period that anglers all around the state are not required to have a fishing license. For the rest of the year a fishing license is required for anyone 16 years and older. Check all the Colorado Parks and Wildlife fishing online here and check out this guide for popular Summit County fishing spots here. Continue reading “It’s free fishing weekend in Colorado”→
An exclusive Summit Voice interview with Fraser Trout, a homeless fish seeking some love (and water) in the Colorado River Basin
By Summit Voice
SUMMIT COUNTY — The Defend the Colorado coalition’s new video, “Trout in Trouble,” features a lost-looking trout leaving his dried-up streambed in the Fraser Valley to go seek water in the big city of Denver, where he panhandles on the streets with a sign reading, “Anything helps.” A passing motorist gives him a bottle of water that he sprinkles over his head, but the expression on his face tells us it’s not enough. The video’s message: Denver Water needs to do more to protect the Fraser River from future diversions to the Front Range.
The “homeless trout’s” performance has been hailed for its authenticity and raw power, with Denver’s Westword calling the film reminiscent of Chaplin and Capra. Others have compared the trout to a young Brando.
Massive Snake River snowmaking diversions means tough times for trout after drought summer
By Bob Berwyn
SUMMIT COUNTY — The most recent snowstorm helped boost the overall Colorado snowpack just a bit, bringing it on par with last year’s level at this time, which is still well below average for mid-November. Statewide, the snowpack was at 57 percent of average, as of Nov. 15, with most West Slope basins between 50 and 60 percent of average. Even the North Platte drainage, which has seen some significant snows in the Never Summer Range, is only at 64 percent of average.
In Summit and Eagle counties, many streams are flowing at or below historic low levels, creating challenges for some ski areas that rely on direct stream diversions for snowmaking. Keystone, for example, has had to dial back its snow guns several times in the past week as the Snake River dropped to a flow of just six cubic feet per second, the minimum required under state regulations. Continue reading “Colorado: Snowmaking impacts Snake River flows”→
Stocked fish sustain gold medal status through Silverthorne
By Bob Berwyn
SUMMIT COUNTY — Even though it’s classified as a gold medal trout stream, the Blue River below Dillon Reservoir is not all it could be. State water quality experts and biologists will scrutinize the river the next few years after recent sampling showed that there aren’t nearly as many aquatic insects in the riverbed as needed to sustain a healthy aquatic ecosystem. The summary of the assessment is online here.
The findings didn’t surprise Jon Ewert, an aquatic biologist with Colorado Parks and Wildlife who has been sampling and studying the Blue (along with other streams in the region) for several years.