Bayhorse Lake (Big Bayhorse Lake)

Upper Salmon Basin

  • Recommended Fishing Water
  • Family Fishing Water

Bayhorse Lake (Big Bayhorse Lake) in Custer County is 25.0 acres at an elevation of 8,585 feet above sea level.

Be cautious on this narrow, steep dirt road, slick when wet; Forest Service advises trailers under 32 feet. No drinking water at site.
Anglers will find good catch rates at these drive-in mountain lakes, either from shore or a small boat. Separated by a ridge and 250 vertical feet, Bayhorse and Little Bayhorse lakes are connected by a mile long hiking trail. Both lakes offer primitive campsites and a scenic escape from summer heat.
From Stanley: at the State Hwy 21 junction, go N on State Hwy 75 just past milepost 236 (about 47 miles); From Challis: go S on US Hwy 93 2 miles, then on State Hwy 75 (about 7 miles plus 0.6 mile past Bayhorse Recreation Site); Turn NW from Hwy 75, crossing the bridge onto FS Rd 051. Follow the road 6 miles to the "Y" and turn left, continuing another mile on FS 051 to (Big) Bayhorse Lake. For Little Bayhorse, keep right at the "Y" onto Little Bayhorse Lake Rd/FS 382 (trailers not recommended) and continue 0.8 mile to Little Bayhorse Lake.

Facilities

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

Recommended Game Fish

Fish Species Observed in Surveys since 1990

Fish Stocking Records

Date Species Quantity General Size
7/27/2017 Rainbow Trout 2,006 Greater than 6 inches
6/28/2017 Rainbow Trout 2,000 Greater than 6 inches
8/18/2016 Rainbow Trout 2,214 Greater than 6 inches
6/28/2016 Rainbow Trout 2,000 Greater than 6 inches
9/29/2015 Cutthroat Trout 12,247 Less than 6 inches
8/10/2015 Rainbow Trout 2,012 Greater than 6 inches
7/1/2015 Rainbow Trout 2,004 Greater than 6 inches
8/13/2014 Rainbow Trout 2,000 Greater than 6 inches
6/27/2014 Rainbow Trout 2,002 Greater than 6 inches
8/5/2013 Rainbow Trout 1,960 Greater than 6 inches
6/27/2013 Rainbow Trout 1,999 Greater than 6 inches
8/2/2012 Rainbow Trout 1,999 Greater than 6 inches
7/2/2012 Rainbow Trout 2,013 Greater than 6 inches
8/31/2011 Rainbow Trout 1,000 Greater than 6 inches
7/12/2011 Rainbow Trout 2,001 Greater than 6 inches
8/17/2010 Rainbow Trout 2,000 Greater than 6 inches
6/28/2010 Rainbow Trout 2,001 Greater than 6 inches
7/28/2009 Rainbow Trout 2,002 Greater than 6 inches
6/30/2009 Rainbow Trout 1,875 Greater than 6 inches
6/30/2009 Rainbow Trout 188 Greater than 6 inches
8/19/2008 Rainbow Trout 1,000 Greater than 6 inches
7/2/2008 Rainbow Trout 2,075 Greater than 6 inches
7/2/2008 Rainbow Trout 999 Greater than 6 inches
8/23/2007 Rainbow Trout 2,000 Greater than 6 inches
6/26/2007 Rainbow Trout 2,002 Greater than 6 inches
8/10/2006 Rainbow Trout 1,998 Greater than 6 inches
6/30/2006 Rainbow Trout 1,995 Greater than 6 inches
8/10/2005 Rainbow Trout 2,025 Greater than 6 inches
7/12/2005 Rainbow Trout 2,083 Greater than 6 inches
9/27/2004 Rainbow Trout 2,380 Greater than 6 inches
8/16/2004 Rainbow Trout 2,000 Greater than 6 inches
7/7/2004 Rainbow Trout 1,995 Greater than 6 inches
8/12/2003 Rainbow Trout 2,025 Greater than 6 inches
7/3/2003 Rainbow Trout 1,995 Greater than 6 inches
8/22/2002 Rainbow Trout 1,995 Greater than 6 inches
7/18/2002 Rainbow Trout 2,025 Greater than 6 inches
7/19/2001 Rainbow Trout 811 Greater than 6 inches
7/19/2001 Rainbow Trout 1,190 Greater than 6 inches
8/11/1999 Rainbow Trout 1,000 Greater than 6 inches
7/8/1999 Rainbow Trout 1,000 Greater than 6 inches
8/20/1998 Rainbow Trout 1,000 Greater than 6 inches
7/29/1998 Rainbow Trout 1,000 Greater than 6 inches
8/11/1997 Rainbow Trout 1,000 Greater than 6 inches
7/9/1997 Rainbow Trout 1,000 Greater than 6 inches
9/19/1996 Rainbow Trout 1,000 Greater than 6 inches
9/17/1996 Rainbow Trout 1,000 Greater than 6 inches
8/22/1996 Rainbow Trout 1,000 Greater than 6 inches
8/16/1996 Rainbow Trout 1,900 Greater than 6 inches
7/11/1996 Rainbow Trout 2,030 Greater than 6 inches
8/3/1995 Rainbow Trout 1,000 Greater than 6 inches
7/18/1995 Rainbow Trout 1,000 Greater than 6 inches
6/22/1992 Rainbow Trout 1,140 Greater than 6 inches
7/11/1991 Rainbow Trout 1,000 Greater than 6 inches
7/2/1990 Rainbow Trout 840 Greater than 6 inches
6/23/1989 Rainbow Trout 1,140 Greater than 6 inches
8/1/1988 Rainbow Trout 2,025 Greater than 6 inches
6/8/1988 Rainbow Trout 990 Greater than 6 inches
6/23/1987 Rainbow Trout 1,320 Greater than 6 inches
8/6/1986 Rainbow Trout 2,100 Greater than 6 inches
7/8/1986 Rainbow Trout 2,010 Greater than 6 inches
7/15/1985 Rainbow Trout 1,338 Greater than 6 inches
6/27/1985 Rainbow Trout 1,000 Greater than 6 inches
8/9/1984 Rainbow Trout 1,524 Greater than 6 inches
7/3/1984 Rainbow Trout 2,100 Greater than 6 inches
8/16/1983 Rainbow Trout 2,365 Less than 6 inches
7/22/1983 Rainbow Trout 2,009 Greater than 6 inches
8/11/1982 Rainbow Trout 2,363 Greater than 6 inches
7/19/1982 Rainbow Trout 1,680 Greater than 6 inches
7/29/1981 Rainbow Trout 3,140 Less than 6 inches
6/16/1981 Rainbow Trout 3,996 Greater than 6 inches
6/26/1980 Rainbow Trout 4,250 Greater than 6 inches
6/29/1979 Rainbow Trout 3,150 Greater than 6 inches
7/18/1978 Rainbow Trout 2,960 Greater than 6 inches
6/23/1977 Rainbow Trout 4,400 Greater than 6 inches
7/14/1976 Rainbow Trout 3,300 Greater than 6 inches
8/20/1975 Rainbow Trout 2,000 Greater than 6 inches
7/10/1974 Rainbow Trout 1,080 Greater than 6 inches
9/19/1973 Rainbow Trout 1,500 Less than 6 inches
7/15/1970 Rainbow Trout 320 Greater than 6 inches
7/28/1969 Rainbow Trout 1,645 Greater than 6 inches
7/15/1968 Rainbow Trout 1,560 Greater than 6 inches
Source: IDFG Fish Stocking Database.

Licenses and Tags

Learn more about IDFG Licenses, Tags & Permits
 

Fishing Rules

All Waters Open All Year

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

Daily Bag Limits

Regional bag and possession 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 Bayhorse Lake (Big Bayhorse Lake).
Salmon Region Bag Limits
Bass (largemouth and smallmouth)
  • Bass limit is 6, both species combined
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
  • No bull trout harvest is allowed
Kokanee
  • Kokanee limit is 25
Salmon (ocean-going)
  • Salmon seasons and limits are set annually by the Idaho Fish and Game Commission and rules are issued in a separate brochure
  • 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 the Lemhi and Pahsimeroi rivers, lakes, and ponds)
  • 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 and sliding sinkers are required (see fishing regulations for details)
Tiger Muskie
  • Tiger Muskie limit is 2, none under 40 inches
Trout includes lake trout, golden trout, Arctic grayling, cutthroat trout, rainbow trout, and trout hybrids, and sunapee
  • trout limit is 6, all species combined
  • Chinook salmon placed in ponds are considered in the trout bag limit
  • 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 including 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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