Lost Valley Reservoir

Flows into the Lost Creek

  • Recommended Fishing Water

Lost Valley Reservoir in Adams County is 522.5 acres.

Interactive Map
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Lost Valley Reservoir offers anglers plenty of places to fish from the shoreline of this scenic reservoir. Fish for trout early in the summer because the reservoir is often drawn down by end of summer.

Facilities

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

Directions

Travel 16 miles north from Council on Highway 95 to the community of Pine Ridge. Turn west on Lost Valley Reservoir Road and travel 4 miles to Lost Valley Reservoir.

Recommended Game Fish

Species Observed in Surveys

Fish Stocking Records

Date Species Quantity General Size
2024/05/23 Rainbow Trout - Triploid 9,069 Catchable (12-14 inches)
2024/05/22 Rainbow Trout - Triploid 5,005 Catchable (12-14 inches)
2023/05/25 Rainbow Trout - Triploid 9,082 Catchable (6+ inches)
2023/05/24 Rainbow Trout - Triploid 5,050 Catchable (6+ inches)
2022/05/26 Rainbow Trout - Triploid 4,085 Catchable (6+ inches)
2022/05/23 Rainbow Trout - Triploid 9,936 Catchable (6+ inches)
2021/05/25 Rainbow Trout - Triploid 4,025 Catchable (12-14 inches)
2021/05/24 Rainbow Trout - Triploid 10,005 Catchable (12-14 inches)
2020/05/21 Rainbow Trout - Triploid 4,205 Catchable (12-14 inches)
2020/05/19 Rainbow Trout - Triploid 9,835 Catchable (12-14 inches)
2019/06/10 Rainbow Trout - Triploid 4,495 Catchable (12-14 inches)
2019/06/07 Rainbow Trout - Triploid 4,640 Catchable (12-14 inches)
2019/05/21 Rainbow Trout - Triploid 4,860 Catchable (12-14 inches)
2018/05/21 Rainbow Trout - Triploid 9,569 Catchable (12-14 inches)
2017/06/08 Rainbow Trout - Triploid 4,622 Catchable (6+ inches)
2017/06/07 Rainbow Trout - Triploid 4,890 Catchable (6+ inches)
2016/06/29 Rainbow Trout - Triploid 11,910 Catchable (6+ inches)
2016/06/07 Rainbow Trout - Triploid 9,472 Catchable (6+ inches)
2015/06/10 Rainbow Trout - Triploid 4,432 Catchable (6+ inches)
2015/06/01 Rainbow Trout - Triploid 4,526 Catchable (6+ inches)
2014/06/09 Rainbow Trout - Triploid 15,052 Catchable (6+ inches)
2013/06/19 Rainbow Trout - Triploid 4,989 Catchable (6+ inches)
2013/05/06 Rainbow Trout - Triploid 10,230 Catchable (6+ inches)
2012/05/30 Rainbow Trout - Triploid 9,570 Catchable (6+ inches)
2012/05/24 Rainbow Trout - Triploid 4,960 Catchable (6+ inches)
2011/06/08 Rainbow Trout - Triploid 17,050 Catchable (6+ inches)
2010/06/29 Rainbow Trout - Triploid 15,790 Catchable (6+ inches)
2009/05/27 Rainbow Trout - Triploid 15,190 Catchable (6+ inches)
2008/05/29 Rainbow Trout - Triploid 15,147 Catchable (6+ inches)
2007/06/13 Rainbow Trout - Triploid 7,130 Catchable (6+ inches)
2006/06/13 Rainbow Trout - Triploid 17,980 Catchable (6+ inches)
2005/05/27 Rainbow Trout - Triploid 15,600 Catchable (6+ inches)
2004/06/09 Rainbow Trout - Triploid 15,080 Catchable (6+ inches)
2003/06/11 Rainbow Trout - Triploid 15,680 Catchable (6+ inches)
2002/07/09 Rainbow Trout - Triploid 8,560 Fingerling (3-6 inches)
2002/06/12 Rainbow Trout - Triploid 8,844 Catchable (6+ inches)
2002/05/30 Rainbow Trout - Triploid 10,880 Catchable (6+ inches)
2002/05/28 Rainbow Trout - Triploid 15,080 Catchable (6+ inches)
2001/05/17 Rainbow Trout - Triploid 9,240 Catchable (6+ inches)
2001/05/14 Rainbow Trout - Triploid 9,600 Catchable (6+ inches)
2000/05/18 Rainbow Trout - Triploid 9,600 Catchable (6+ inches)
1999/06/16 Rainbow Trout 10,140 Catchable (6+ inches)
1998/05/19 Rainbow Trout 9,800 Catchable (6+ inches)
1997/05/28 Splake 4,250 Catchable (6+ inches)
1997/05/22 Rainbow Trout 20,010 Fingerling (3-6 inches)
1997/05/13 Rainbow Trout 10,200 Catchable (6+ inches)
1996/10/17 Rainbow Trout 25,680 Fingerling (3-6 inches)
1996/07/11 Rainbow Trout 5,600 Catchable (6+ inches)
1996/05/22 Rainbow Trout 10,125 Catchable (6+ inches)
1995/06/26 Rainbow Trout 5,000 Catchable (6+ inches)
1995/05/24 Rainbow Trout 1,050 Catchable (6+ inches)
1995/05/24 Rainbow Trout 24,200 Fingerling (3-6 inches)
1995/05/18 Rainbow Trout 6,200 Catchable (6+ inches)
1995/04/27 Rainbow Trout 3,008 Catchable (6+ inches)
1994/05/16 Rainbow Trout 9,990 Catchable (6+ inches)
1993/09/22 Splake 10,000 Fingerling (3-6 inches)
1993/06/09 Rainbow Trout 51,000 Fingerling (3-6 inches)
1993/05/24 Rainbow Trout 10,000 Catchable (6+ inches)
1992/06/15 Rainbow Trout 68,875 Fry (0-3 inches)
1992/05/20 Rainbow Trout - Triploid 25,140 Catchable (6+ inches)
1992/05/17 Rainbow Trout 1,000 Fingerling (3-6 inches)
1989/05/10 Rainbow Trout 10,200 Catchable (6+ inches)
1988/07/18 Rainbow Trout 30,025 Fingerling (3-6 inches)
1988/07/05 Rainbow Trout 34,300 Fingerling (3-6 inches)
1987/07/23 Rainbow Trout 33,600 Fingerling (3-6 inches)
1987/06/22 Rainbow Trout 34,200 Fingerling (3-6 inches)
1986/07/07 Rainbow Trout 29,670 Fingerling (3-6 inches)
1986/07/07 Rainbow Trout 63,000 Fry (0-3 inches)
1986/05/19 Cutbow - Cutthroat x Rainbow Trout 100 Adults
1986/05/19 Cutbow - Cutthroat x Rainbow Trout - Diploid 100 Adults
1986/05/14 Rainbow Trout 14,850 Catchable (6+ inches)
1986/05/12 Cutbow - Cutthroat x Rainbow Trout 109 Adults
1986/05/12 Cutbow - Cutthroat x Rainbow Trout - Diploid 109 Adults
1986/05/01 Rainbow Trout 9,800 Adults
1985/06/18 Rainbow Trout 10,240 Catchable (6+ inches)
1985/06/10 Chinook Salmon - Fall 5,040 Fingerling (3-6 inches)
1985/05/15 Rainbow Trout 10,200 Catchable (6+ inches)
1984/09/07 Chinook Salmon - Fall 105 Adults
1984/08/20 Bonneville Cutthroat Trout 2,990 Catchable (6+ inches)
1984/06/11 Chinook Salmon - Fall 7,875 Fry (0-3 inches)
1984/06/08 Rainbow Trout 8,700 Catchable (6+ inches)
1984/06/04 Rainbow Trout 8,460 Catchable (6+ inches)
1983/10/29 Chinook Salmon - Fall 2,140 Fingerling (3-6 inches)
1982/07/20 Chinook Salmon - Fall 3,055 Fingerling (3-6 inches)
1982/07/20 Rainbow Trout 9,120 Catchable (6+ inches)
1982/06/01 Rainbow Trout 7,440 Catchable (6+ inches)
1981/05/14 Rainbow Trout 5,400 Catchable (6+ inches)
1980/06/17 Rainbow Trout 9,450 Catchable (6+ inches)
1980/05/19 Rainbow Trout 7,020 Catchable (6+ inches)
1979/06/07 Rainbow Trout 5,520 Catchable (6+ inches)
1979/06/05 Rainbow Trout 5,280 Catchable (6+ inches)
1979/06/04 Rainbow Trout 5,280 Catchable (6+ inches)
1979/05/24 Rainbow Trout 5,520 Catchable (6+ inches)
1978/06/14 Rainbow Trout 7,920 Catchable (6+ inches)
1978/05/25 Rainbow Trout 7,200 Catchable (6+ inches)
1978/05/24 Rainbow Trout 7,200 Catchable (6+ inches)
1977/06/20 Rainbow Trout 2,530 Catchable (6+ inches)
1977/05/11 Rainbow Trout 1,600 Catchable (6+ inches)
1976/06/08 Rainbow Trout 8,640 Catchable (6+ inches)
1976/05/24 Rainbow Trout 5,520 Catchable (6+ inches)
1975/07/21 Rainbow Trout 9,120 Catchable (6+ inches)
1975/07/07 Rainbow Trout 5,280 Catchable (6+ inches)
1975/06/27 Rainbow Trout 1,140 Catchable (6+ inches)
1975/06/11 Rainbow Trout 1,380 Catchable (6+ inches)
1974/09/26 Cutthroat Trout 48,000 Fry (0-3 inches)
1974/09/26 Rainbow Trout 28,875 Fry (0-3 inches)
1974/07/17 Rainbow Trout 2,460 Catchable (6+ inches)
1974/06/27 Rainbow Trout 1,320 Catchable (6+ inches)
1974/05/30 Rainbow Trout 3,600 Catchable (6+ inches)
1973/10/19 Rainbow Trout 8,280 Fingerling (3-6 inches)
1973/10/17 Rainbow Trout 9,100 Fingerling (3-6 inches)
1973/06/04 Rainbow Trout 1,320 Catchable (6+ inches)
1973/05/16 Rainbow Trout 16,910 Catchable (6+ inches)
1973/05/10 Rainbow Trout 1,740 Catchable (6+ inches)
1972/05/31 Rainbow Trout 900 Catchable (6+ inches)
1972/05/25 Rainbow Trout 780 Adults
1971/07/19 Rainbow Trout 2,040 Catchable (6+ inches)
1971/07/01 Rainbow Trout 3,690 Catchable (6+ inches)
1971/06/10 Rainbow Trout 2,220 Catchable (6+ inches)
1971/06/03 Rainbow Trout 1,620 Catchable (6+ inches)
1971/05/25 Rainbow Trout 1,920 Catchable (6+ inches)
1970/07/31 Rainbow Trout 2,040 Catchable (6+ inches)
1970/07/09 Rainbow Trout 65,826 Fry (0-3 inches)
1970/06/18 Rainbow Trout 35,100 Fry (0-3 inches)
1970/06/12 Rainbow Trout 1,800 Catchable (6+ inches)
1970/05/29 Rainbow Trout 2,640 Catchable (6+ inches)
1970/05/26 Rainbow Trout 3,600 Catchable (6+ inches)
1968/09/10 Rainbow Trout 114,000 Fry (0-3 inches)
1968/08/15 Rainbow Trout 3,120 Fingerling (3-6 inches)
1968/06/11 Rainbow Trout 110,960 Fingerling (3-6 inches)
1968/06/01 Rainbow Trout 600 Catchable (6+ inches)
1968/05/29 Rainbow Trout 1,800 Catchable (6+ inches)
1968/05/28 Rainbow Trout 4,650 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 Lost Valley 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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