The following are links to U.S. Fish and Wildlife Service (USFWS) documents related to the listing of the mountain yellow-legged frog under the Endangered Species Act. Right-click links to open them in a new window

Mountain yellow-legged frogs in southern California

• July 8, 1997: 90-day finding by the USFWS regarding the petition to list the southern California population as "endangered" [PDF].
• December 22, 1999: 12-month finding and proposed rule by the USFWS to list the southern California population as "endangered" [PDF]
• July 2, 2002: Final rule by the USFWS designating the southern California population as "endangered" [PDF].
• September 14, 2006: Final rule by the USFWS to designate critical habitat for the southern California population [PDF].

Mountain yellow-legged frogs in the Sierra Nevada

• October 12, 2000: 90-day finding by the USFWS regarding the petition to list the Sierra Nevada population as "endangered" [PDF].
• January 16, 2003: 12-month finding by the USFWS regarding the petition to list the Sierra Nevada population as "endangered" [PDF].
• June 25, 2007: Revised 12-month finding by the USFWS regarding the petition to list the Sierra Nevada population as "endangered" [PDF].