Horsethief Reservoir

Flows into the Horsethief Creek

  • Recommended Fishing Water
  • Family Fishing Water

Horsethief Reservoir in Valley County is 258.5 acres.

This reservoir has everything for a memorable fishing weekend - a beautiful lake in the trees, good fishing and camping. Camping is managed by the Treasure Valley YMCA. The YMCA manages a website related to camping at Horsethief Reservoir - to find updates and information related to camping, please visit: www.horsethiefcampground.com

 

Facilities

Motor Restriction
No
Boat Ramp
Yes
Dock
Yes
Toilet
Handicap Accessible
Campground
Yes
ADA Access
Handicap Accessible

Directions

From State Hwy 55 north of Cascade, turn east on the Warm Lake Highway. In 6 miles turn south on Horsethief Reservoir Rd and go 3 miles to the reservoir.

Recommended Game Fish

Species Observed in Surveys

Fish Stocking Records

Date Species Quantity General Size
2022/05/13 Rainbow Trout 7,006 Greater than 6 inches
2021/09/28 Rainbow Trout 3,780 Greater than 6 inches
2021/09/23 Rainbow Trout 3,780 Greater than 6 inches
2021/06/17 Kokanee 9,540 Less than 6 inches
2021/06/17 Rainbow Trout 7,378 Greater than 6 inches
2021/05/27 Rainbow Trout 3,060 Greater than 6 inches
2021/05/26 Brown Trout 10,143 Less than 6 inches
2021/05/26 Rainbow Trout 10,036 Less than 6 inches
2021/05/21 Rainbow Trout 4,698 Greater than 6 inches
2021/05/20 Rainbow Trout 3,306 Greater than 6 inches
2021/05/19 Rainbow Trout 4,002 Greater than 6 inches
2020/10/01 Rainbow Trout 7,473 Greater than 6 inches
2020/09/15 Rainbow Trout 1,398 Greater than 6 inches
2020/06/18 Kokanee 3,091 Less than 6 inches
2020/06/03 Rainbow Trout 8,316 Greater than 6 inches
2020/05/27 Brown Trout 12,079 Less than 6 inches
2020/05/27 Rainbow Trout 13,832 Less than 6 inches
2020/05/18 Rainbow Trout 9,217 Greater than 6 inches
2020/05/14 Cobow - Coho Salmon x Rainbow Trout 2,791 Greater than 6 inches
2020/05/14 Rainbow Trout 2,804 Greater than 6 inches
2019/09/17 Rainbow Trout 8,550 Greater than 6 inches
2019/06/20 Kokanee 2,993 Less than 6 inches
2019/06/13 Brown Trout 13,028 Less than 6 inches
2019/06/13 Rainbow Trout 9,905 Less than 6 inches
2019/06/05 Rainbow Trout 12,544 Greater than 6 inches
2019/05/17 Rainbow Trout 9,792 Greater than 6 inches
2019/05/16 Rainbow Trout 5,211 Greater than 6 inches
2018/09/21 Rainbow Trout 961 Greater than 6 inches
2018/09/20 Rainbow Trout 19,369 Greater than 6 inches
2018/06/07 Brown Trout 10,178 Less than 6 inches
2018/06/07 Rainbow Trout 10,582 Less than 6 inches
2018/06/06 Kokanee 3,000 Less than 6 inches
2018/06/06 Rainbow Trout 5,001 Greater than 6 inches
2018/05/22 Rainbow Trout 4,238 Greater than 6 inches
2018/05/17 Rainbow Trout 3,966 Greater than 6 inches
2018/05/16 Rainbow Trout 3,797 Greater than 6 inches
2017/09/19 Rainbow Trout 3,017 Greater than 6 inches
2017/09/07 Rainbow Trout 6,566 Greater than 6 inches
2017/06/20 Brown Trout 10,656 Less than 6 inches
2017/06/20 Rainbow Trout 9,981 Less than 6 inches
2017/06/16 Kokanee 3,000 Less than 6 inches
2017/06/06 Rainbow Trout 3,045 Greater than 6 inches
2017/05/23 Rainbow Trout 4,006 Greater than 6 inches
2017/05/22 Rainbow Trout 8,504 Greater than 6 inches
2016/11/02 Rainbow Trout 600 Adults
2016/09/22 Rainbow Trout 4,218 Greater than 6 inches
2016/06/30 Rainbow Trout 10,899 Greater than 6 inches
2016/06/10 Kokanee 5,085 Less than 6 inches
2016/06/09 Brown Trout 30,564 Less than 6 inches
2016/06/09 Rainbow Trout 9,359 Less than 6 inches
2016/06/08 Rainbow Trout 2,560 Greater than 6 inches
2016/05/26 Rainbow Trout 3,180 Greater than 6 inches
2016/05/25 Rainbow Trout 5,724 Greater than 6 inches
2016/05/04 Rainbow Trout 6,080 Greater than 6 inches
2015/06/11 Rainbow Trout 3,000 Greater than 6 inches
2015/05/20 Rainbow Trout 11,988 Greater than 6 inches
2014/09/24 Rainbow Trout 3,430 Greater than 6 inches
2014/09/23 Rainbow Trout 6,400 Greater than 6 inches
2014/06/11 Rainbow Trout 10,014 Less than 6 inches
2014/06/04 Brown Trout 10,010 Less than 6 inches
2014/06/04 Rainbow Trout 4,992 Greater than 6 inches
2014/05/16 Rainbow Trout 20,280 Greater than 6 inches
2013/10/02 Rainbow Trout 5,350 Greater than 6 inches
2013/09/20 Rainbow Trout 5,250 Greater than 6 inches
2013/09/19 Rainbow Trout 3,650 Greater than 6 inches
2013/08/28 Rainbow Trout 18,150 Greater than 6 inches
2013/06/26 Brown Trout 10,038 Less than 6 inches
2013/06/26 Rainbow Trout 2,056 Greater than 6 inches
2013/06/20 Rainbow Trout 7,204 Greater than 6 inches
2013/05/23 Rainbow Trout 8,910 Greater than 6 inches
2013/05/16 Rainbow Trout 7,088 Greater than 6 inches
2012/10/11 Rainbow Trout 8,379 Greater than 6 inches
2012/06/26 Brown Trout 9,782 Less than 6 inches
2012/06/11 Rainbow Trout 6,040 Greater than 6 inches
2012/05/23 Rainbow Trout 11,100 Greater than 6 inches
2012/05/23 Rainbow Trout 9,982 Less than 6 inches
2012/05/22 Rainbow Trout 9,888 Greater than 6 inches
2011/09/22 Rainbow Trout 12,100 Greater than 6 inches
2011/09/19 Rainbow Trout 5,040 Greater than 6 inches
2011/06/08 Rainbow Trout 12,400 Greater than 6 inches
2011/06/08 Rainbow Trout 13,000 Less than 6 inches
2011/06/01 Brown Trout 24,450 Less than 6 inches
2011/05/19 Rainbow Trout 1,198 Greater than 6 inches
2011/05/17 Rainbow Trout 15,370 Greater than 6 inches
2010/09/16 Rainbow Trout 5,500 Greater than 6 inches
2010/06/30 Rainbow Trout 13,110 Greater than 6 inches
2010/06/30 Rainbow Trout 11,060 Less than 6 inches
2010/05/24 Rainbow Trout 11,825 Greater than 6 inches
2010/05/20 Brown Trout 10,184 Less than 6 inches
2009/09/09 Rainbow Trout 5,060 Greater than 6 inches
2009/06/09 Rainbow Trout 5,152 Greater than 6 inches
2009/06/09 Rainbow Trout 10,680 Less than 6 inches
2009/05/19 Brown Trout 10,140 Less than 6 inches
2009/05/18 Rainbow Trout 21,420 Greater than 6 inches
2008/10/06 Rainbow Trout 4,950 Greater than 6 inches
2008/06/04 Rainbow Trout 5,512 Greater than 6 inches
2008/05/28 Brown Trout 10,170 Less than 6 inches
2008/05/19 Rainbow Trout 3,680 Greater than 6 inches
2008/05/19 Rainbow Trout 25,800 Less than 6 inches
2008/05/14 Rainbow Trout 6,400 Greater than 6 inches
2007/09/13 Brown Trout 10,004 Less than 6 inches
2007/09/13 Rainbow Trout 5,170 Greater than 6 inches
2007/06/12 Rainbow Trout 5,100 Greater than 6 inches
2007/06/12 Rainbow Trout 10,650 Less than 6 inches
2007/05/09 Rainbow Trout 19,840 Greater than 6 inches
2007/05/07 Brown Trout 4,108 Greater than 6 inches
2006/06/20 Rainbow Trout 15,200 Greater than 6 inches
2006/05/24 Rainbow Trout 20,300 Greater than 6 inches
2005/09/21 Brown Trout 6,935 Greater than 6 inches
2005/09/21 Rainbow Trout 4,550 Greater than 6 inches
2005/06/14 Rainbow Trout 2,600 Greater than 6 inches
2005/06/14 Rainbow Trout 10,080 Less than 6 inches
2005/05/16 Rainbow Trout 22,750 Greater than 6 inches
2004/09/16 Rainbow Trout 4,800 Greater than 6 inches
2004/06/08 Rainbow Trout 8,960 Greater than 6 inches
2004/06/08 Rainbow Trout 10,010 Less than 6 inches
2004/05/03 Rainbow Trout 16,100 Greater than 6 inches
2003/09/11 Rainbow Trout 17,010 Greater than 6 inches
2003/05/21 Rainbow Trout 19,200 Greater than 6 inches
2003/05/21 Rainbow Trout 5,332 Less than 6 inches
2003/03/21 Rainbow Trout 5,334 Less than 6 inches
2002/09/18 Rainbow Trout 5,000 Greater than 6 inches
2002/06/24 Rainbow Trout 6,820 Greater than 6 inches
2002/06/24 Rainbow Trout 10,150 Less than 6 inches
2002/05/22 Rainbow Trout 18,200 Greater than 6 inches
2001/09/20 Cutbow - Cutthroat x Rainbow Trout 10,000 Less than 6 inches
2001/09/13 Rainbow Trout 22,562 Greater than 6 inches
2001/06/26 Rainbow Trout 5,850 Less than 6 inches
2001/06/04 Rainbow Trout 7,200 Greater than 6 inches
2001/06/04 Rainbow Trout 8,492 Less than 6 inches
2001/05/09 Rainbow Trout 10,140 Greater than 6 inches
2000/09/27 Cutbow - Cutthroat x Rainbow Trout 10,080 Less than 6 inches
2000/07/26 Brown Trout 14,860 Greater than 6 inches
2000/05/23 Rainbow Trout 198 Greater than 6 inches
2000/05/17 Rainbow Trout 14,850 Less than 6 inches
1999/08/31 Rainbow Trout 5,070 Greater than 6 inches
1999/06/28 Rainbow Trout 10,038 Greater than 6 inches
1999/05/27 Rainbow Trout 9,945 Greater than 6 inches
1998/09/16 Rainbow Trout 8,000 Greater than 6 inches
1998/09/03 Cutbow - Cutthroat x Rainbow Trout 10,000 Less than 6 inches
1998/06/22 Rainbow Trout 9,900 Greater than 6 inches
1998/05/15 Brown Trout 5,080 Adults
1998/05/14 Rainbow Trout 16,275 Less than 6 inches
1998/05/05 Rainbow Trout 10,040 Greater than 6 inches
1997/09/15 Rainbow Trout 5,250 Greater than 6 inches
1997/09/04 Cutbow - Cutthroat x Rainbow Trout 10,500 Less than 6 inches
1997/05/22 Brown Trout 8,190 Less than 6 inches
1997/05/22 Rainbow Trout 33,330 Less than 6 inches
1997/05/16 Brown Trout 1,640 Greater than 6 inches
1997/05/15 Brown Trout 3,362 Greater than 6 inches
1997/05/05 Rainbow Trout 19,600 Greater than 6 inches
1996/09/27 Cutbow - Cutthroat x Rainbow Trout 10,000 Less than 6 inches
1996/09/27 Rainbow Trout 10,400 Less than 6 inches
1996/09/19 Cutthroat Trout 10,000 Less than 6 inches
1996/07/15 Rainbow Trout 10,000 Less than 6 inches
1996/07/11 Rainbow Trout 2,800 Greater than 6 inches
1996/07/11 Rainbow Trout 12,080 Less than 6 inches
1996/06/28 Rainbow Trout 7,260 Greater than 6 inches
1996/05/31 Rainbow Trout 16,500 Greater than 6 inches
1996/05/23 Rainbow Trout 3,600 Greater than 6 inches
1996/05/17 Brown Trout 5,000 Greater than 6 inches
1996/05/15 Rainbow Trout 25,260 Less than 6 inches
1995/05/24 Rainbow Trout 10,000 Greater than 6 inches
1994/10/13 Rainbow Trout 250 Adults
1994/10/13 Rainbow Trout 5,000 Greater than 6 inches
1994/09/26 Cutbow - Cutthroat x Rainbow Trout 22,000 Less than 6 inches
1994/05/25 Brown Trout 6,703 Less than 6 inches
1994/05/25 Rainbow Trout 31,163 Less than 6 inches
1994/05/12 Rainbow Trout 10,143 Greater than 6 inches
1993/09/22 Splake 10,000 Less than 6 inches
1993/09/16 Cutbow - Cutthroat x Rainbow Trout 25,200 Less than 6 inches
1993/06/15 Brown Trout 5,100 Less than 6 inches
1993/06/01 Rainbow Trout 44,544 Less than 6 inches
1993/05/24 Rainbow Trout 10,200 Less than 6 inches
1992/09/10 Cutbow - Cutthroat x Rainbow Trout 25,000 Less than 6 inches
1992/08/25 Brown Trout 5,000 Less than 6 inches
1992/05/26 Rainbow Trout 300 Greater than 6 inches
1992/05/15 Rainbow Trout 10,000 Greater than 6 inches
1992/05/07 Rainbow Trout 54,660 Less than 6 inches
1991/09/25 Cutbow - Cutthroat x Rainbow Trout 25,200 Less than 6 inches
1991/09/09 Rainbow Trout 900 Greater than 6 inches
1991/07/24 Rainbow Trout 550 Adults
1991/06/18 Brown Trout 5,175 Less than 6 inches
1991/05/29 Rainbow Trout 50,000 Less than 6 inches
1991/05/22 Rainbow Trout 3,015 Greater than 6 inches
1991/05/21 Rainbow Trout 3,045 Greater than 6 inches
1991/05/16 Rainbow Trout 3,930 Greater than 6 inches
1990/10/25 Rainbow Trout 200 Adults
1990/10/15 Cutbow - Cutthroat x Rainbow Trout 26,250 Less than 6 inches
1990/09/21 Brown Trout 5,070 Less than 6 inches
1990/06/08 Rainbow Trout 2,655 Greater than 6 inches
1990/05/17 Rainbow Trout 5,000 Greater than 6 inches
1990/05/10 Rainbow Trout 52,080 Less than 6 inches
1989/10/18 Cutbow - Cutthroat x Rainbow Trout 25,145 Less than 6 inches
1989/06/23 Rainbow Trout 50,020 Less than 6 inches
1989/05/10 Rainbow Trout 10,000 Greater than 6 inches
1988/10/26 Brown Trout 4,140 Greater than 6 inches
1988/09/27 Cutbow - Cutthroat x Rainbow Trout 25,200 Less than 6 inches
1988/06/14 Rainbow Trout 50,400 Less than 6 inches
1987/09/17 Cutthroat Trout 25,575 Less than 6 inches
1987/06/03 Rainbow Trout 18,480 Less than 6 inches
1987/06/01 Rainbow Trout 32,340 Less than 6 inches
1986/08/12 Cutthroat Trout 25,000 Less than 6 inches
1986/07/08 Rainbow Trout 10,500 Less than 6 inches
1986/05/29 Rainbow Trout 20,000 Less than 6 inches
1986/05/28 Rainbow Trout 21,250 Less than 6 inches
1985/08/16 Cutthroat Trout 25,720 Less than 6 inches
1985/07/01 Rainbow Trout 45,120 Less than 6 inches
1984/07/26 Rainbow Trout 20,125 Less than 6 inches
1984/07/18 Rainbow Trout 31,200 Less than 6 inches
1984/05/18 Rainbow Trout 7,200 Greater than 6 inches
1984/05/17 Rainbow Trout 7,200 Greater than 6 inches
1982/07/02 Rainbow Trout 4,800 Greater than 6 inches
1982/06/01 Rainbow Trout 28,125 Less than 6 inches
1982/06/01 Yellowstone Cutthroat Trout 9,990 Less than 6 inches
1982/05/24 Yellowstone Cutthroat Trout 35,000 Less than 6 inches
1982/05/19 Rainbow Trout 21,850 Less than 6 inches
1982/05/19 Yellowstone Cutthroat Trout 5,500 Less than 6 inches
1981/09/23 Cutbow - Cutthroat x Rainbow Trout 6,969 Less than 6 inches
1981/07/21 Rainbow Trout 10,140 Greater than 6 inches
1981/06/16 Rainbow Trout 13,237 Less than 6 inches
1981/05/15 Rainbow Trout 33,600 Less than 6 inches
1980/07/14 Rainbow Trout 2,280 Greater than 6 inches
1980/05/06 Rainbow Trout 49,710 Less than 6 inches
1979/07/30 Rainbow Trout 2,040 Greater than 6 inches
1979/06/06 Rainbow Trout 25,092 Less than 6 inches
1979/05/01 Rainbow Trout 50,400 Less than 6 inches
1978/05/03 Rainbow Trout 35,164 Less than 6 inches
1977/10/12 Cutbow - Cutthroat x Rainbow Trout 13,364 Less than 6 inches
1977/06/23 Cutthroat Trout 11,284 Less than 6 inches
1977/04/21 Rainbow Trout 50,025 Less than 6 inches
1976/07/22 Cutbow - Cutthroat x Rainbow Trout 23,980 Less than 6 inches
1976/05/03 Rainbow Trout 39,900 Less than 6 inches
1975/09/24 Cutthroat Trout 8,086 Less than 6 inches
1975/05/21 Rainbow Trout 74,968 Less than 6 inches
1974/09/05 Cutthroat Trout 14,210 Less than 6 inches
1974/05/13 Rainbow Trout 74,465 Less than 6 inches
1973/04/24 Rainbow Trout 74,976 Less than 6 inches
1972/04/27 Rainbow Trout 73,869 Less than 6 inches
1971/05/17 Rainbow Trout 43,410 Less than 6 inches
1970/06/16 Rainbow Trout 1,890 Greater than 6 inches
1970/06/01 Rainbow Trout 3,360 Greater than 6 inches
1970/05/19 Rainbow Trout 4,800 Greater than 6 inches
1970/05/19 Rainbow Trout 49,959 Less than 6 inches
1969/05/22 Rainbow Trout 4,600 Greater than 6 inches
1969/05/15 Rainbow Trout 27,230 Less than 6 inches
1969/05/14 Rainbow Trout 6,000 Greater than 6 inches
1968/05/31 Rainbow Trout 100,320 Less than 6 inches
1968/05/20 Rainbow Trout 10,400 Greater than 6 inches
Source: IDFG Fish Stocking Database.

Licenses and Tags

Learn more about IDFG Licenses, Tags & Permits
 

The lake has a 5 mph speed limit and is a no-wake water.

Fishing Rules, 2022 - 2024

All Waters Open All Year

Except as modified in Special Rules
Fishing is not allowed within the posted upstream and downstream boundary of any fish weir or trap.

Daily Bag Limits

The following daily bag limits apply to all waters within each region except as modified in the Special Rules. The possession limit is 3-times the daily bag limit after the second day of the season.

Special Rules

No Special Rules for Horsethief Reservoir.
Southwest Region Bag Limits
Bass (Largemouth and Smallmouth)

  • Bass limit is 6, both species combined
  • None under 12 inches

Brook Trout

  • Brook Trout limit is 25
  • Harvest allowed during any open season unless otherwise noted under Special Rules - if gear or bait restrictions are listed, they must be followed when fishing for Brook Trout

Bull Trout

  • Bull Trout limit is 0, catch-and-release

Kokanee

  • Kokanee limit is 6

Salmon

  • Spring and summer Chinook Salmon seasons and limits are set by the Idaho Fish and Game Commission and issued in separate brochures
  • Seasons and limits for fall Chinook Salmon and Coho Salmon can be found here
  • Sockeye Salmon limit is 0 and fishing for or targeting Sockeye Salmon is illegal
  • Fishing for or targeting salmon is prohibited unless a salmon season is specifically opened for that water 

Steelhead (ocean-going)

  • Defined as Rainbow Trout longer than twenty (20) inches in length in the Salmon River drainage (excluding lakes and reservoirs). Between Hells Canyon Dam and Oxbow Dam and the Boise River from its mouth upstream to Barber Dam during steelhead seasons, steelhead are Rainbow Trout over twenty (20) inches in length with the adipose fin clipped (as evidenced by a healed scar)
  • Fishing for or targeting steelhead is prohibited unless a steelhead season is specifically opened for that water. See fishing regulations for details

Sturgeon

  • Sturgeon limit is 0, catch-and-release
  • Sturgeon must not be removed from the water and must be released upon landing
  • Barbless hooks are required
  • Use of a sliding swivel device to secure a weight, and a lighter test line to secure weight to sliding swivel device is required. See fishing regulations for details

Tiger Muskie

  • Tiger Muskie limit is 2, none under 40 inches

Trout includes Brown Trout, Lake Trout, Golden Trout, Arctic Grayling, Cutthroat Trout, Rainbow Trout, land-locked Chinook and Coho Salmon, trout hybrids (e.g. Tiger Trout)

  • Trout limit is 6, all species combined
  • Does not include Bull Trout and Brook Trout which are listed separately

Whitefish

  • Whitefish limit is 25
  • Harvest allowed during any open season unless otherwise noted under Special Rules - if gear or bait restrictions are listed, they must be followed when fishing for whitefish

Protected Nongame Fish includes Pacific Lamprey

  • May not be harvested or possessed

All Other Fish Species includes bullfrogs and crayfish

  • No bag, size or possession limit
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