[wildlife.ca.gov] Habitat Loss, Threats: The filling of Indian Valley Reservoir in 1975 destroyed most of Indian Valley brodiaea's historic range. Part of the plant's habitat in Glenn County is used as a local dump. At the time of State listing in 1979 the most significant threat to the species was habitat destruction and water levels at the Indian Valley Reservoir. The Bureau of Land Management has protected 40 acres of Indian Valley brodiaea habitat in the Indian Valley Area of Critical Environmental Concern. This plant?s most significant threats today are trampling, vehicles, dumping, and horticultural collection as well as the threat of climate change. (link added by Mary Ann Machi)