From The Trinidad Times Independent (Randy Woock):
Fishing at the lake will be prohibited and the lake will be blocked off during the “chemical reclamation” of the lake, which will continue until the project is completed and the lake restocked at an unspecified later date. However, the park’s restaurant, cabins, lodge and RV spaces are to open and available for the remainder of the season. Robb said during a Thursday interview that “soft side” tents would not be allowed at the park during the near future, due to the fish kill possibly attracting bears. He also stated that the fish kill process could possibly take as long as 30 days or as few as 14.
Colorado Division of Wildlife (CDW) officials informed the city in November 2007 that white suckers, a type of fish alien to the lake, comprised an overwhelming majority percent of the lake’s fish population to the detriment of the more-popular trout. It was theorized by the CDW that the white suckers may have been introduced into the lake by fishermen illegally using them as live bait. The CDW had been stocking the lake with extra trout as a temporary means of dealing with the alien fish.
In November 2007, CDW officials had suggested three more permanent options for dealing with the White Suckers. The first involved doing nothing and allowing the White Suckers to continue dominating the lake. The second option had involved introducing a natural predator of the White Suckers to the lake. The third option involved dumping large amounts of chemicals into the lake, killing all the fish and then restocking it with the desired species.
More restoration coverage here.