PROTECTION STATUS: Not listed; candidate species
PETITIONED: 1989 (Utah Nature Study Survey); 2004 (Center for Biological Diversity)
YEAR PLACED ON LIST: Candidate 1991
RANGE: Small, isolated populations in Oregon, Washington, and British Columbia
THREATS: Habitat loss due to development; gravel mining; water diversion; livestock grazing; introduction of nonnative species; and water contamination from pesticides, fertilizers, and acid rain
POPULATION TREND: The frog’s population is declining.