- Zone 2 is from October 30 to January 18 and from February 16 to March 10.
- Zone 3 is from November 5 to January 25 and from February 16 to March 10.
- Zone 4 is from October 13 to January 25.
- Butte, Camas, Cassia, Clark, Fremont, Gooding, Jefferson, Jerome, Lemhi, Lincoln, Madison, Minidoka, Power and Teton counties.
- Bannock County west of Interstate 15.
- Bingham County west of Interstate 15.
- Blaine County, except within the Salmon River drainage.
- Bonneville County west of Interstate 15 and north of U.S. Highway 26.
- Custer County, except within the Salmon River drainage upstream from and including Valley Creek.
- Oneida County west of Interstate 15.
- Owyhee County west of the Bruneau River.
- Twin Falls County east of U.S. Highway 93.
