The Habitat Evaluation Procedures (HEP) were used to evaluate pre- and postconstruction habitat conditions of the U.S. Army Corps of Engineers Bonneville project in Oregon and Washington. The project directly impacted 20,749 acres of wildlife habitat. Seven evaluation species were selected with losses and gains expressed in Habitat Units (HU's). One HU is equivalent to 1 acre of prime habitat. The evaluation estimated a gain of 2,671 HU's of lesser scaup wintering habitat. Losses of 4,300 HU's of great blue heron habitat, 2,443 HU's of Canada goose habitat, 2,76? HU's of spotted sandpiper habitat, 163 HU's of yellow warbler habitat, 1,022 HU's black-capped chickadee habitat, and 1,622 HU's of mink habitat occurred as a result of the [...]
