Rusty crayfish, an aquatic nuisance and an invasive species, has been discovered in a Larimer County river south of Estes Park, according to Colorado Parks and Wildlife.

The rusty crayfish is a prohibited aquatic nuisance species due to their voracious appetite on critical habitat vegetation ...

DENVER ( KDVR) — An aggressive aquatic nuisance species was found in a northeastern Colorado river. According to Colorado ...

State officials finalized a landmark agreement with Union Pacific Railroad that modernizes a century-old lease for the Moffat ...

An aquatic nuisance species has been found for the first time in the Little Thompson River, according to Colorado Parks and ...

Gov. Jared Polis and Union Pacific Railroad President Beth Whited signed a 25-year lease agreement for passenger rail access ...

The deal extends Union Pacific's lease of the Moffat Tunnel, which crosses under the Continental Divide east of Winter Park.