Arrowrock Reservoir

Flows into the Boise River

  • Recommended Fishing Water

Arrowrock Reservoir in Boise and Elmore Counties is 3,015.0 acres.

Interactive Map
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Arrowrock Reservoir fisheries are supported by a combination of stocking and natural reproduction. Fast growing kokanee and rainbow trout are targeted by most anglers. However, other anglers choose to target smallmouth bass or yellow perch. Be sure to properly identify trout species as bull trout utilize the reservoir throughout much if not all of the year. Reservoir level fluctuates widely. Anglers may check reservoir level at: http://www.usbr.gov/pn/hydromet/boipaytea.html

Facilities

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

Recommended Game Fish

Species Observed in Surveys

Fish Stocking Records

Date Species Quantity General Size
2024/10/21 Rainbow Trout - Triploid 9,030 Catchable (12-14 inches)
2024/05/30 Kokanee 455,423 Fry (0-3 inches)
2024/03/28 Rainbow Trout - Triploid 747 Catchable (12-14 inches)
2024/03/27 Rainbow Trout - Triploid 8,255 Catchable (12-14 inches)
2023/10/17 Rainbow Trout - Triploid 6,545 Catchable (12-14 inches)
2023/10/16 Rainbow Trout - Triploid 2,520 Catchable (12-14 inches)
2023/06/01 Kokanee 202,129 Fry (0-3 inches)
2023/04/07 Rainbow Trout - Triploid 2,595 Catchable (12-14 inches)
2023/04/06 Rainbow Trout - Triploid 3,675 Catchable (12-14 inches)
2023/03/28 Rainbow Trout - Triploid 2,886 Catchable (12-14 inches)
2022/10/20 Rainbow Trout - Triploid 9,010 Catchable (12-14 inches)
2022/06/02 Kokanee 32,670 Fingerling (3-6 inches)
2022/06/02 Kokanee 65,549 Fry (0-3 inches)
2022/04/06 Rainbow Trout - Triploid 884 Catchable (12-14 inches)
2022/04/05 Rainbow Trout 75 Catchable (12-14 inches)
2022/04/05 Rainbow Trout - Triploid 75 Catchable (12-14 inches)
2022/04/05 Rainbow Trout - Triploid 375 Catchable (6+ inches)
2022/04/04 Rainbow Trout 6,412 Catchable (12-14 inches)
2022/04/04 Rainbow Trout - Triploid 1,778 Catchable (12-14 inches)
2021/10/13 Rainbow Trout - Triploid 20,560 Catchable (12-14 inches)
2021/06/03 Kokanee 47,500 Fingerling (3-6 inches)
2021/06/03 Kokanee 94,800 Fry (0-3 inches)
2021/04/08 Rainbow Trout - Triploid 1,441 Catchable (12-14 inches)
2021/04/07 Rainbow Trout - Triploid 7,616 Catchable (12-14 inches)
2020/11/12 Rainbow Trout - Triploid 12,884 Fingerling (3-6 inches)
2020/10/02 Rainbow Trout - Triploid 4,371 Catchable (12-14 inches)
2020/10/01 Rainbow Trout - Triploid 4,653 Catchable (12-14 inches)
2020/06/03 Kokanee 148,025 Fingerling (3-6 inches)
2020/03/16 Rainbow Trout - Triploid 8,064 Catchable (12-14 inches)
2019/10/15 Rainbow Trout - Triploid 9,361 Catchable (12-14 inches)
2019/10/09 Rainbow Trout - Triploid 473 Catchable (12-14 inches)
2019/10/08 Rainbow Trout - Triploid 810 Catchable (12-14 inches)
2019/06/05 Kokanee 100,644 Fry (0-3 inches)
2019/04/22 Kokanee 210,910 Fry (0-3 inches)
2019/04/03 Rainbow Trout - Triploid 10,614 Catchable (12-14 inches)
2018/10/26 Rainbow Trout - Triploid 10,001 Catchable (12-14 inches)
2018/09/24 Rainbow Trout - Triploid 13,231 Catchable (6+ inches)
2018/06/13 Kokanee 98,580 Fry (0-3 inches)
2017/10/02 Rainbow Trout - Triploid 14,508 Catchable (6+ inches)
2017/06/07 Kokanee 103,579 Fingerling (3-6 inches)
2016/10/27 Rainbow Trout - Triploid 12,627 Catchable (6+ inches)
2016/05/04 Kokanee 99,992 Fingerling (3-6 inches)
2015/10/28 Rainbow Trout - Triploid 5,254 Catchable (6+ inches)
2015/10/08 Rainbow Trout - Triploid 8,134 Catchable (6+ inches)
2015/05/13 Kokanee 101,198 Fingerling (3-6 inches)
2014/10/30 Rainbow Trout - Triploid 400 Catchable (6+ inches)
2014/10/23 Rainbow Trout - Triploid 15,845 Catchable (6+ inches)
2014/10/08 Rainbow Trout - Triploid 19,530 Catchable (6+ inches)
2014/09/10 Rainbow Trout - Triploid 6,464 Catchable (6+ inches)
2014/05/15 Kokanee 49,955 Fry (0-3 inches)
2013/10/24 Rainbow Trout - Triploid 6,236 Catchable (6+ inches)
2013/10/17 Rainbow Trout - Triploid 11,800 Catchable (6+ inches)
2013/10/17 Rainbow Trout - Triploid 3,567 Fry (0-3 inches)
2013/10/09 Rainbow Trout - Triploid 15,750 Catchable (6+ inches)
2013/05/14 Rainbow Trout - Triploid 13,688 Fingerling (3-6 inches)
2013/05/13 Rainbow Trout - Triploid 6,114 Catchable (6+ inches)
2013/05/08 Rainbow Trout - Triploid 13,828 Fingerling (3-6 inches)
2013/05/01 Kokanee 50,160 Fry (0-3 inches)
2013/04/30 Rainbow Trout - Triploid 142,780 Fry (0-3 inches)
2012/10/05 Rainbow Trout - Triploid 400 Catchable (6+ inches)
2012/09/14 Rainbow Trout - Triploid 12,060 Catchable (6+ inches)
2012/09/13 Rainbow Trout - Triploid 14,560 Catchable (6+ inches)
2012/09/12 Rainbow Trout - Triploid 11,760 Catchable (6+ inches)
2012/06/27 Rainbow Trout - Triploid 14,300 Catchable (6+ inches)
2012/06/27 Rainbow Trout - Triploid 9,100 Fingerling (3-6 inches)
2012/05/02 Kokanee 50,130 Fry (0-3 inches)
2012/04/25 Rainbow Trout - Triploid 41,730 Fingerling (3-6 inches)
2011/10/14 Rainbow Trout - Triploid 2,550 Catchable (6+ inches)
2011/10/11 Rainbow Trout - Triploid 17,500 Catchable (6+ inches)
2011/06/08 Kokanee 30,000 Fry (0-3 inches)
2011/05/09 Rainbow Trout - Triploid 151,641 Fingerling (3-6 inches)
2011/05/04 Rainbow Trout - Triploid 8,670 Catchable (6+ inches)
2011/03/21 Rainbow Trout - Triploid 15,035 Catchable (6+ inches)
2010/10/05 Rainbow Trout - Triploid 5,940 Catchable (6+ inches)
2010/10/04 Rainbow Trout - Triploid 15,631 Catchable (6+ inches)
2010/06/03 Kokanee 29,000 Fry (0-3 inches)
2010/05/24 Rainbow Trout - Triploid 40,260 Fingerling (3-6 inches)
2010/05/06 Rainbow Trout - Triploid 76,770 Fingerling (3-6 inches)
2010/03/09 Rainbow Trout - Triploid 23,220 Catchable (6+ inches)
2010/03/09 Rainbow Trout - Triploid 41,272 Fingerling (3-6 inches)
2010/03/08 Rainbow Trout - Triploid 22,320 Catchable (6+ inches)
2009/10/22 Rainbow Trout - Triploid 3,780 Catchable (6+ inches)
2009/10/09 Rainbow Trout - Triploid 16,450 Catchable (6+ inches)
2009/04/28 Rainbow Trout - Triploid 150,595 Fry (0-3 inches)
2008/10/15 Rainbow Trout - Triploid 9,990 Catchable (6+ inches)
2008/09/16 Rainbow Trout - Triploid 11,900 Catchable (6+ inches)
2008/09/04 Rainbow Trout - Triploid 17,160 Catchable (6+ inches)
2008/04/21 Rainbow Trout - Triploid 158,880 Fry (0-3 inches)
2007/04/19 Rainbow Trout - Triploid 180,720 Fingerling (3-6 inches)
2006/09/07 Rainbow Trout - Triploid 14,040 Catchable (6+ inches)
2006/05/09 Kokanee 70,000 Fingerling (3-6 inches)
2006/04/27 Rainbow Trout - Triploid 58,630 Fingerling (3-6 inches)
2006/04/27 Rainbow Trout - Triploid 91,440 Fry (0-3 inches)
2005/10/06 Rainbow Trout - Triploid 15,500 Catchable (6+ inches)
2005/04/19 Rainbow Trout - Triploid 163,170 Fingerling (3-6 inches)
2004/11/02 Rainbow Trout - Triploid 6,270 Catchable (6+ inches)
2004/09/24 Rainbow Trout - Triploid 12,600 Catchable (6+ inches)
2004/09/22 Rainbow Trout - Triploid 8,060 Catchable (6+ inches)
2004/09/20 Rainbow Trout - Triploid 11,200 Catchable (6+ inches)
2004/09/17 Rainbow Trout - Triploid 11,200 Catchable (6+ inches)
2004/09/09 Rainbow Trout - Triploid 9,800 Catchable (6+ inches)
2004/09/08 Rainbow Trout - Triploid 14,100 Catchable (6+ inches)
2004/09/07 Rainbow Trout - Triploid 16,100 Catchable (6+ inches)
2004/09/03 Rainbow Trout - Triploid 14,065 Catchable (6+ inches)
2004/06/21 Rainbow Trout - Triploid 91,130 Fingerling (3-6 inches)
2004/06/15 Rainbow Trout - Triploid 18,020 Catchable (6+ inches)
2004/06/14 Kokanee 7,800 Fingerling (3-6 inches)
2004/06/03 Kokanee 69,225 Fingerling (3-6 inches)
2004/05/26 Rainbow Trout - Triploid 13,720 Catchable (6+ inches)
2004/05/14 Rainbow Trout - Triploid 60,639 Fingerling (3-6 inches)
2004/05/05 Rainbow Trout - Triploid 78,800 Fingerling (3-6 inches)
2004/05/04 Rainbow Trout - Triploid 100,450 Fingerling (3-6 inches)
2004/04/21 Rainbow Trout - Triploid 16,800 Catchable (6+ inches)
2002/04/25 Rainbow Trout - Triploid 12,320 Fingerling (3-6 inches)
2002/04/22 Rainbow Trout - Triploid 92,120 Fingerling (3-6 inches)
2002/04/12 Rainbow Trout - Triploid 14,060 Fingerling (3-6 inches)
2002/04/09 Rainbow Trout - Triploid 31,400 Fingerling (3-6 inches)
2001/04/30 Rainbow Trout - Triploid 150,033 Fingerling (3-6 inches)
2000/05/17 Steelhead 13,260 Catchable (6+ inches)
2000/05/08 Rainbow Trout 135,108 Fingerling (3-6 inches)
1999/05/03 Rainbow Trout 68,810 Fingerling (3-6 inches)
1998/06/30 Rainbow Trout 40,320 Fingerling (3-6 inches)
1998/06/29 Rainbow Trout 82,605 Fingerling (3-6 inches)
1998/06/16 Chinook Salmon - Fall 16,692 Fingerling (3-6 inches)
1997/06/10 Chinook Salmon - Fall 4,965 Fingerling (3-6 inches)
1997/06/10 Rainbow Trout 14,980 Fingerling (3-6 inches)
1997/05/09 Rainbow Trout 124,800 Fingerling (3-6 inches)
1996/06/26 Chinook Salmon - Fall 7,800 Fingerling (3-6 inches)
1996/05/15 Rainbow Trout 100,700 Fingerling (3-6 inches)
1996/04/03 Rainbow Trout 15,000 Catchable (6+ inches)
1995/05/30 Rainbow Trout 80,000 Fingerling (3-6 inches)
1995/04/06 Rainbow Trout 14,985 Catchable (6+ inches)
1994/04/29 Rainbow Trout 126,100 Fingerling (3-6 inches)
1994/04/07 Rainbow Trout - Triploid 16,875 Catchable (6+ inches)
1993/06/07 Rainbow Trout 15,480 Catchable (6+ inches)
1993/04/28 Rainbow Trout 102,276 Fingerling (3-6 inches)
1992/04/15 Rainbow Trout 49,400 Fingerling (3-6 inches)
1992/04/14 Rainbow Trout 53,200 Fingerling (3-6 inches)
1992/04/03 Rainbow Trout 105,300 Fingerling (3-6 inches)
1992/04/02 Rainbow Trout 78,600 Fingerling (3-6 inches)
1992/03/06 Rainbow Trout 50,000 Fingerling (3-6 inches)
1991/12/20 Rainbow Trout 525,000 Fry (0-3 inches)
1991/05/01 Rainbow Trout 88,920 Fingerling (3-6 inches)
1990/11/09 Rainbow Trout 66,142 Fingerling (3-6 inches)
1990/10/31 Cutbow - Cutthroat x Rainbow Trout 36,000 Fingerling (3-6 inches)
1990/10/31 Cutbow - Cutthroat x Rainbow Trout - Diploid 36,000 Fingerling (3-6 inches)
1990/04/12 Rainbow Trout 191,250 Fingerling (3-6 inches)
1990/04/11 Rainbow Trout 71,230 Fingerling (3-6 inches)
1990/04/10 Rainbow Trout 16,000 Fingerling (3-6 inches)
1990/04/09 Rainbow Trout 13,320 Fingerling (3-6 inches)
1990/04/05 Rainbow Trout 12,420 Fingerling (3-6 inches)
1989/06/12 Rainbow Trout 10,125 Catchable (6+ inches)
1989/04/28 Rainbow Trout 15,600 Fingerling (3-6 inches)
1989/04/18 Rainbow Trout 162,440 Fingerling (3-6 inches)
1989/04/17 Rainbow Trout 120,690 Fingerling (3-6 inches)
1988/05/03 Rainbow Trout 8,610 Catchable (6+ inches)
1987/03/23 Rainbow Trout 5,688 Catchable (6+ inches)
1987/03/20 Rainbow Trout 15,500 Catchable (6+ inches)
1987/03/19 Rainbow Trout 9,600 Catchable (6+ inches)
1987/03/16 Rainbow Trout 8,550 Catchable (6+ inches)
1986/10/09 Rainbow Trout 7,800 Catchable (6+ inches)
1986/10/07 Rainbow Trout 9,240 Catchable (6+ inches)
1986/08/22 Rainbow Trout 1,730 Catchable (6+ inches)
1986/08/19 Rainbow Trout 11,100 Catchable (6+ inches)
1986/07/31 Rainbow Trout 11,700 Catchable (6+ inches)
1986/06/20 Rainbow Trout 6,000 Fingerling (3-6 inches)
1986/03/20 Rainbow Trout 6,240 Catchable (6+ inches)
1985/06/21 Rainbow Trout 6,120 Catchable (6+ inches)
1985/05/14 Rainbow Trout 6,800 Catchable (6+ inches)
1984/06/25 Rainbow Trout 7,380 Catchable (6+ inches)
1982/09/13 Rainbow Trout 3,300 Catchable (6+ inches)
1982/06/14 Rainbow Trout 8,690 Catchable (6+ inches)
1981/04/08 Rainbow Trout 7,800 Catchable (6+ inches)
1981/04/07 Rainbow Trout 4,200 Catchable (6+ inches)
1980/04/24 Rainbow Trout 1,974 Catchable (6+ inches)
1980/04/16 Rainbow Trout 5,040 Catchable (6+ inches)
1980/04/01 Rainbow Trout 3,135 Catchable (6+ inches)
1979/04/11 Rainbow Trout 5,600 Catchable (6+ inches)
1979/04/04 Rainbow Trout 4,440 Catchable (6+ inches)
1978/05/05 Rainbow Trout 3,150 Catchable (6+ inches)
1978/03/06 Rainbow Trout 6,830 Catchable (6+ inches)
1976/05/04 Rainbow Trout 3,360 Catchable (6+ inches)
1976/04/22 Rainbow Trout 4,080 Catchable (6+ inches)
1975/03/19 Rainbow Trout 3,800 Catchable (6+ inches)
1974/04/24 Rainbow Trout 3,000 Catchable (6+ inches)
1974/04/15 Rainbow Trout 3,630 Catchable (6+ inches)
1973/05/24 Rainbow Trout 9,250 Catchable (6+ inches)
1973/05/18 Rainbow Trout 4,200 Catchable (6+ inches)
1972/06/07 Rainbow Trout 7,560 Catchable (6+ inches)
1972/05/26 Rainbow Trout 4,200 Catchable (6+ inches)
1972/05/23 Rainbow Trout 89,667 Fry (0-3 inches)
1972/05/22 Rainbow Trout 46,840 Fry (0-3 inches)
1972/03/30 Coho Salmon 120,840 Fry (0-3 inches)
1972/03/14 Coho Salmon 91,000 Fry (0-3 inches)
1971/04/29 Rainbow Trout 5,290 Catchable (6+ inches)
1971/04/28 Rainbow Trout 5,520 Catchable (6+ inches)
1971/04/07 Coho Salmon 156,950 Fry (0-3 inches)
1970/05/13 Rainbow Trout 5,040 Catchable (6+ inches)
1970/04/01 Rainbow Trout 4,400 Catchable (6+ inches)
1970/03/10 Coho Salmon 164,400 Fry (0-3 inches)
1969/07/10 Rainbow Trout 3,450 Catchable (6+ inches)
1969/04/22 Coho Salmon 96,200 Fry (0-3 inches)
1968/04/18 Coho Salmon 50,800 Fry (0-3 inches)
1968/04/03 Rainbow Trout 4,000 Catchable (6+ inches)
1968/03/12 Rainbow Trout 6,000 Catchable (6+ inches)
Source: IDFG Fish Stocking Database.

Licenses and Tags

Learn more about IDFG Licenses, Tags & Permits
 

Fishing Rules, 2025 - 2027

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.

Special Rules

No Special Rules for Arrowrock 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 apply when fishing for Brook Trout

Bull Trout

  • Bull Trout - catch-and-release

Kokanee

  • Kokanee limit is 6

Salmon (ocean-run)

  • 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 fishing is illegal. Defined as ocean-run Oncorhynchus nerka longer than 14 inches in the Snake River drainage below Hells Canyon Dam, the Salmon River drainage (excluding above Mosquito Flat Dam)
  • Fishing for salmon is prohibited unless a salmon season is specifically opened for that water

Steelhead (ocean-run)

  • Defined as Rainbow Trout longer than 20 inches 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 20 inches with the adipose fin clipped (as evidenced by a healed scar)
  • Fishing for steelhead is prohibited unless a steelhead season is specifically opened for that water. See fishing regulations for details

Sturgeon

  • Sturgeon - catch-and-release
  • Sturgeon must not be removed from the water and must be released upon landing
  • Barbless hooks, sliding swivel device to secure a weight, and a lighter test line to secure weight to sliding swivel device are 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
  • Chinook Salmon and steelhead placed in ponds are counted in the trout bag limit
  • Bull Trout and Brook Trout are listed separately

Walleye (Stocked illegally in this Region. May be harmful to existing fisheries.)

  • No bag, length, or possession limits. Harvest is encouraged

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 apply 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, length, or possession limits
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