Beaver had been very active in the Copeland Creek region for several years after 1931, when they first appeared in this section of the park. They soon exhausted the willows, their principal food here, and were forced to migrate to a more favorable habitat.

On July 16, it was noted that the willows have recovered. With their food supply replenished, the beavers have renewed activity along this stream. Nearly every one of the old dam sites had been or was in the process of being repaired. A considerable amount of water is being stored behind these dams in the area which extends about 250 yards below the firetrail. The restored dams range from five to fifty feet in width and from one to four feet in height. Behind one dam, the impounded water is backed up approximately one hundred feet. The total number of dams is about 15.

As my attention was drawn by a sudden disturbance on the bottom of one of the pools I saw a beaver departing from the immediate vicinity. A full view of the animal was obtained as it climbed over the dam and disappeared into the willows below the site. The beaver appeared to be full grown and in good condition.

From the amount of activity in the area, it is estimated that only one pair of beaver are working along the stream. The cuttings are somewhat scattered throughout the entire area with occasional cut branchlets submerged in open areas apparently used as food depots. No indication of lodge-building was noted.

In the 1946 issue of Nature Notes, Ranger-Naturalist Wallis reported no sign of fresh beaver activity in the Copeland Creek area, but some fresh workings along lower Annie Creek. Observations this year indicates that no new activity has taken place along Annie Creek.

Other indications of beaver activity in the park have been seen only in lower Bybee Creek, where a considerable number of fresh cuttings were observed and one quite large dam had been constructed. This particular dam was novel in that it was constructed in very fast water, and was five feet high and twenty feet across, backing up a pool forty feet long. Freshly peeled twigs of willow were noted in the dam but no other sign of the beaver was noted.