Ashton Reservoir

Tributary of Henrys Fork Snake River

  • Recommended Fishing Water
  • Family Fishing Water

Ashton Reservoir in Fremont County is 720.6 acres.

A scenic 400 acre reservoir on the Henrys Fork, Ashton Reservoir is known for rainbow trout and is also home to the state record brown trout. Fish from the fishing dock at the access site, from shore, or from watercraft.

Facilities

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

Directions

Travel north on US Highway 20, past the town of Ashton. Immediately after crossing the Henrys Fork, turn left and travel about 0.4 mile to the Ashton Reservoir access site. Find additional access by going west at Ashton on Main St about 3.7 miles and turn left just before the river. Both access areas have a boat ramp and small parking area.

Recommended Game Fish

Fish Stocking Records

Date Species Quantity General Size
6/19/2018 Rainbow Trout 6,600 Greater than 6 inches
6/18/2018 Rainbow Trout 32,151 Greater than 6 inches
6/27/2017 Rainbow Trout 12,917 Greater than 6 inches
5/31/2017 Rainbow Trout 12,915 Greater than 6 inches
5/2/2017 Rainbow Trout 12,919 Greater than 6 inches
7/7/2016 Rainbow Trout 12,300 Greater than 6 inches
6/6/2016 Rainbow Trout 13,020 Greater than 6 inches
6/1/2016 Rainbow Trout 800 Greater than 6 inches
5/6/2016 Rainbow Trout 12,653 Greater than 6 inches
7/29/2015 Rainbow Trout 11,350 Greater than 6 inches
6/22/2015 Rainbow Trout 13,700 Greater than 6 inches
5/21/2015 Rainbow Trout 700 Greater than 6 inches
5/14/2015 Rainbow Trout 13,000 Greater than 6 inches
10/31/2014 Rainbow Trout 400 Greater than 6 inches
6/25/2014 Rainbow Trout 13,400 Greater than 6 inches
6/4/2014 Rainbow Trout 11,600 Greater than 6 inches
5/1/2014 Rainbow Trout 16,771 Greater than 6 inches
6/24/2013 Rainbow Trout 400 Greater than 6 inches
6/11/2013 Rainbow Trout 28,930 Greater than 6 inches
5/24/2013 Rainbow Trout 3,875 Greater than 6 inches
5/2/2013 Rainbow Trout 7,750 Greater than 6 inches
8/16/2010 Rainbow Trout 1,750 Greater than 6 inches
8/2/2010 Rainbow Trout 3,375 Greater than 6 inches
7/19/2010 Rainbow Trout 3,510 Greater than 6 inches
7/6/2010 Rainbow Trout 3,450 Greater than 6 inches
6/21/2010 Rainbow Trout 3,450 Greater than 6 inches
6/1/2010 Rainbow Trout 3,440 Greater than 6 inches
5/17/2010 Rainbow Trout 3,460 Greater than 6 inches
5/10/2010 Rainbow Trout 3,600 Greater than 6 inches
4/12/2010 Rainbow Trout 6,133 Greater than 6 inches
11/20/2009 Rainbow Trout 990 Greater than 6 inches
9/1/2009 Rainbow Trout 7,125 Greater than 6 inches
8/18/2009 Rainbow Trout 3,640 Greater than 6 inches
8/3/2009 Rainbow Trout 3,440 Greater than 6 inches
7/21/2009 Rainbow Trout 3,080 Greater than 6 inches
7/6/2009 Rainbow Trout 3,447 Greater than 6 inches
6/24/2009 Rainbow Trout 3,625 Greater than 6 inches
6/2/2009 Rainbow Trout 3,450 Greater than 6 inches
5/18/2009 Rainbow Trout 3,450 Greater than 6 inches
4/22/2009 Rainbow Trout 3,402 Greater than 6 inches
9/16/2008 Rainbow Trout 2,805 Greater than 6 inches
8/28/2008 Rainbow Trout 4,349 Greater than 6 inches
8/18/2008 Rainbow Trout 3,237 Greater than 6 inches
8/5/2008 Rainbow Trout 3,470 Greater than 6 inches
7/22/2008 Rainbow Trout 3,480 Greater than 6 inches
7/8/2008 Rainbow Trout 3,195 Greater than 6 inches
6/24/2008 Rainbow Trout 3,437 Greater than 6 inches
6/6/2008 Rainbow Trout 3,430 Greater than 6 inches
5/23/2008 Rainbow Trout 3,474 Greater than 6 inches
5/5/2008 Rainbow Trout 3,525 Greater than 6 inches
9/6/2007 Rainbow Trout 7,041 Greater than 6 inches
8/28/2007 Rainbow Trout 3,450 Greater than 6 inches
8/15/2007 Rainbow Trout 1,080 Greater than 6 inches
8/6/2007 Rainbow Trout 4,006 Greater than 6 inches
7/25/2007 Rainbow Trout 1,748 Greater than 6 inches
7/9/2007 Rainbow Trout 3,447 Greater than 6 inches
6/29/2007 Rainbow Trout 3,456 Greater than 6 inches
6/7/2007 Rainbow Trout 3,280 Greater than 6 inches
5/22/2007 Rainbow Trout 3,439 Greater than 6 inches
5/8/2007 Rainbow Trout 3,430 Greater than 6 inches
10/4/2006 Rainbow Trout 1,430 Greater than 6 inches
9/26/2006 Rainbow Trout 2,072 Greater than 6 inches
9/14/2006 Rainbow Trout 3,135 Greater than 6 inches
9/13/2006 Rainbow Trout 3,237 Greater than 6 inches
8/28/2006 Rainbow Trout 3,442 Greater than 6 inches
8/10/2006 Rainbow Trout 3,229 Greater than 6 inches
7/27/2006 Rainbow Trout 3,438 Greater than 6 inches
7/10/2006 Rainbow Trout 3,480 Greater than 6 inches
6/28/2006 Rainbow Trout 3,406 Greater than 6 inches
6/9/2006 Rainbow Trout 3,484 Greater than 6 inches
5/22/2006 Rainbow Trout 4,174 Greater than 6 inches
9/14/2005 Rainbow Trout 6,973 Greater than 6 inches
8/31/2005 Rainbow Trout 3,433 Greater than 6 inches
8/8/2005 Rainbow Trout 3,425 Greater than 6 inches
7/27/2005 Rainbow Trout 3,430 Greater than 6 inches
7/11/2005 Rainbow Trout 3,324 Greater than 6 inches
7/1/2005 Rainbow Trout 3,435 Greater than 6 inches
6/20/2005 Rainbow Trout 3,461 Greater than 6 inches
5/26/2005 Rainbow Trout 3,456 Greater than 6 inches
5/10/2005 Rainbow Trout 3,448 Greater than 6 inches
9/9/2004 Rainbow Trout 6,868 Greater than 6 inches
8/17/2004 Rainbow Trout 3,437 Greater than 6 inches
8/3/2004 Rainbow Trout 3,393 Greater than 6 inches
7/20/2004 Rainbow Trout 3,550 Greater than 6 inches
7/8/2004 Rainbow Trout 3,442 Greater than 6 inches
6/30/2004 Rainbow Trout 3,454 Greater than 6 inches
6/8/2004 Rainbow Trout 3,434 Greater than 6 inches
5/27/2004 Rainbow Trout 3,445 Greater than 6 inches
5/13/2004 Rainbow Trout 3,402 Greater than 6 inches
9/29/2003 Rainbow Trout 3,288 Greater than 6 inches
9/9/2003 Rainbow Trout 3,445 Greater than 6 inches
8/19/2003 Rainbow Trout 3,442 Greater than 6 inches
8/7/2003 Rainbow Trout 3,666 Greater than 6 inches
7/28/2003 Rainbow Trout 871 Greater than 6 inches
7/22/2003 Rainbow Trout 2,563 Greater than 6 inches
7/8/2003 Rainbow Trout 3,443 Greater than 6 inches
6/27/2003 Rainbow Trout 819 Greater than 6 inches
6/24/2003 Rainbow Trout 2,622 Greater than 6 inches
6/10/2003 Rainbow Trout 3,308 Greater than 6 inches
5/27/2003 Rainbow Trout 3,438 Greater than 6 inches
5/13/2003 Rainbow Trout 3,432 Greater than 6 inches
9/23/2002 Rainbow Trout 2,646 Greater than 6 inches
9/11/2002 Rainbow Trout 2,808 Greater than 6 inches
8/28/2002 Rainbow Trout 2,700 Greater than 6 inches
8/13/2002 Rainbow Trout 2,723 Greater than 6 inches
7/24/2002 Rainbow Trout 2,805 Greater than 6 inches
7/9/2002 Rainbow Trout 2,747 Greater than 6 inches
6/25/2002 Rainbow Trout 2,750 Greater than 6 inches
6/13/2002 Rainbow Trout 2,744 Greater than 6 inches
5/30/2002 Rainbow Trout 2,762 Greater than 6 inches
5/15/2002 Rainbow Trout 2,832 Greater than 6 inches
9/21/2001 Rainbow Trout 1,755 Greater than 6 inches
9/14/2001 Rainbow Trout 1,800 Greater than 6 inches
9/5/2001 Rainbow Trout 1,980 Greater than 6 inches
8/21/2001 Rainbow Trout 2,747 Greater than 6 inches
8/7/2001 Rainbow Trout 2,714 Greater than 6 inches
7/26/2001 Rainbow Trout 2,744 Greater than 6 inches
7/11/2001 Rainbow Trout 1,942 Greater than 6 inches
6/21/2001 Rainbow Trout 2,754 Greater than 6 inches
6/6/2001 Rainbow Trout 2,760 Greater than 6 inches
5/30/2001 Rainbow Trout 799 Greater than 6 inches
5/23/2001 Rainbow Trout 2,756 Greater than 6 inches
5/9/2001 Rainbow Trout 2,758 Greater than 6 inches
9/6/2000 Rainbow Trout 5,069 Greater than 6 inches
8/22/2000 Rainbow Trout 3,360 Greater than 6 inches
8/8/2000 Rainbow Trout 2,752 Greater than 6 inches
7/18/2000 Rainbow Trout 2,610 Greater than 6 inches
7/5/2000 Rainbow Trout 2,777 Greater than 6 inches
6/26/2000 Rainbow Trout 2,646 Greater than 6 inches
6/13/2000 Rainbow Trout 2,728 Greater than 6 inches
5/24/2000 Rainbow Trout 2,772 Greater than 6 inches
5/4/2000 Rainbow Trout 2,790 Greater than 6 inches
9/22/1999 Rainbow Trout 1,104 Greater than 6 inches
9/20/1999 Rainbow Trout 2,700 Greater than 6 inches
9/10/1999 Rainbow Trout 2,750 Greater than 6 inches
8/24/1999 Rainbow Trout 2,755 Greater than 6 inches
8/9/1999 Rainbow Trout 1,225 Greater than 6 inches
8/3/1999 Rainbow Trout 1,528 Greater than 6 inches
7/19/1999 Rainbow Trout 2,750 Greater than 6 inches
7/6/1999 Rainbow Trout 2,732 Greater than 6 inches
6/22/1999 Rainbow Trout 2,750 Greater than 6 inches
6/2/1999 Rainbow Trout 2,250 Greater than 6 inches
5/24/1999 Rainbow Trout 2,732 Greater than 6 inches
5/7/1999 Rainbow Trout 2,775 Greater than 6 inches
9/21/1998 Rainbow Trout 2,730 Greater than 6 inches
9/9/1998 Rainbow Trout 2,770 Greater than 6 inches
8/17/1998 Rainbow Trout 2,492 Greater than 6 inches
8/3/1998 Rainbow Trout 2,704 Greater than 6 inches
7/20/1998 Rainbow Trout 2,782 Greater than 6 inches
7/7/1998 Rainbow Trout 2,820 Greater than 6 inches
6/22/1998 Rainbow Trout 2,754 Greater than 6 inches
6/1/1998 Rainbow Trout 2,751 Greater than 6 inches
5/20/1998 Rainbow Trout 2,740 Greater than 6 inches
5/4/1998 Rainbow Trout 2,749 Greater than 6 inches
9/29/1997 Rainbow Trout 1,140 Greater than 6 inches
9/25/1997 Rainbow Trout 1,764 Greater than 6 inches
9/8/1997 Rainbow Trout 2,842 Greater than 6 inches
8/28/1997 Rainbow Trout 2,870 Greater than 6 inches
8/8/1997 Rainbow Trout 2,280 Greater than 6 inches
8/4/1997 Rainbow Trout 2,526 Greater than 6 inches
7/21/1997 Rainbow Trout 2,446 Greater than 6 inches
7/7/1997 Rainbow Trout 2,712 Greater than 6 inches
6/16/1997 Rainbow Trout 2,750 Greater than 6 inches
6/2/1997 Rainbow Trout 2,754 Greater than 6 inches
5/20/1997 Rainbow Trout 2,740 Greater than 6 inches
5/5/1997 Rainbow Trout 2,757 Greater than 6 inches
9/17/1996 Rainbow Trout 2,805 Greater than 6 inches
9/5/1996 Rainbow Trout 2,772 Greater than 6 inches
8/20/1996 Rainbow Trout 2,818 Greater than 6 inches
8/5/1996 Rainbow Trout 2,782 Greater than 6 inches
7/23/1996 Rainbow Trout 1,094 Greater than 6 inches
7/22/1996 Rainbow Trout 1,400 Greater than 6 inches
7/8/1996 Rainbow Trout 2,756 Greater than 6 inches
6/17/1996 Rainbow Trout 2,745 Greater than 6 inches
6/3/1996 Rainbow Trout 2,750 Greater than 6 inches
5/20/1996 Rainbow Trout 2,740 Greater than 6 inches
5/7/1996 Rainbow Trout 2,772 Greater than 6 inches
8/29/1995 Rainbow Trout 2,749 Greater than 6 inches
8/8/1995 Rainbow Trout 2,770 Greater than 6 inches
7/27/1995 Rainbow Trout 2,737 Greater than 6 inches
7/14/1995 Rainbow Trout 2,773 Greater than 6 inches
6/28/1995 Rainbow Trout 2,728 Greater than 6 inches
6/9/1995 Rainbow Trout 2,750 Greater than 6 inches
5/23/1995 Rainbow Trout 5,497 Greater than 6 inches
8/26/1994 Rainbow Trout 3,900 Greater than 6 inches
8/9/1994 Rainbow Trout 2,548 Greater than 6 inches
7/29/1994 Rainbow Trout 2,037 Greater than 6 inches
7/15/1994 Rainbow Trout 2,525 Greater than 6 inches
6/28/1994 Rainbow Trout 2,760 Greater than 6 inches
6/13/1994 Rainbow Trout 2,750 Greater than 6 inches
5/25/1994 Rainbow Trout 5,475 Greater than 6 inches
9/2/1993 Rainbow Trout 5,504 Greater than 6 inches
8/5/1993 Rainbow Trout 2,642 Greater than 6 inches
7/15/1993 Rainbow Trout 2,769 Greater than 6 inches
7/1/1993 Rainbow Trout 5,592 Greater than 6 inches
5/26/1993 Rainbow Trout 5,501 Greater than 6 inches
11/16/1992 Rainbow Trout 6,062 Greater than 6 inches
7/14/1992 Rainbow Trout 7,370 Less than 6 inches
7/28/1989 Rainbow Trout 480 Greater than 6 inches
7/6/1989 Rainbow Trout 450 Greater than 6 inches
6/7/1989 Rainbow Trout 537 Greater than 6 inches
5/16/1989 Rainbow Trout 2,000 Greater than 6 inches
8/22/1988 Rainbow Trout 840 Greater than 6 inches
8/10/1988 Rainbow Trout 1,170 Greater than 6 inches
7/20/1988 Rainbow Trout 1,050 Greater than 6 inches
7/5/1988 Rainbow Trout 1,050 Greater than 6 inches
6/21/1988 Rainbow Trout 1,500 Greater than 6 inches
6/3/1988 Rainbow Trout 1,500 Greater than 6 inches
4/19/1988 Rainbow Trout 3,009 Greater than 6 inches
8/5/1987 Rainbow Trout 2,002 Greater than 6 inches
7/16/1987 Rainbow Trout 2,520 Greater than 6 inches
6/22/1987 Rainbow Trout 3,000 Greater than 6 inches
5/20/1987 Rainbow Trout 2,100 Greater than 6 inches
5/19/1987 Rainbow Trout 3,000 Greater than 6 inches
3/25/1987 Rainbow Trout 2,275 Greater than 6 inches
8/8/1986 Rainbow Trout 5,001 Greater than 6 inches
7/18/1986 Rainbow Trout 40,100 Less than 6 inches
7/11/1986 Rainbow Trout 6,000 Greater than 6 inches
6/13/1986 Rainbow Trout 8,971 Greater than 6 inches
3/18/1986 Rainbow Trout 1,001 Greater than 6 inches
3/17/1986 Rainbow Trout 1,001 Greater than 6 inches
9/17/1985 Cutthroat Trout 20,999 Less than 6 inches
7/22/1985 Yellowstone Cutthroat Trout 2,995 Greater than 6 inches
7/22/1985 Yellowstone Cutthroat Trout 9,985 Less than 6 inches
7/15/1985 Cutthroat Trout 8,835 Less than 6 inches
6/24/1985 Rainbow Trout 20,378 Less than 6 inches
6/19/1985 Rainbow Trout 20,085 Less than 6 inches
6/18/1985 Rainbow Trout 1,050 Greater than 6 inches
6/17/1985 Rainbow Trout 3,000 Greater than 6 inches
6/3/1985 Rainbow Trout 3,150 Greater than 6 inches
5/29/1985 Rainbow Trout 2,100 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 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

Henrys Fork tributaries (except Warm River, Fall River, and Thurmon Creek)
  • December 1 through Friday before Memorial Day weekend - trout limit is 0, catch-and-release
  • Saturday of Memorial Day weekend through November 30 - trout limit is 6, no harvest of Cutthroat Trout
Upper Snake 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
Kokanee
  • Kokanee limit is 15
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
  • Trout limit is 6, all species combined
  • Does not include Bull Trout and Brook Trout which are listed separately
Whitefish
  • Whitefish limit is 25 - see Big Lost River exception
  • 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 Northern Leatherside Chub and Bluehead Sucker (also known as Green Sucker)
  • May not be harvested or possessed
All Other Fish Species includes bullfrogs and crayfish
  • No bag, size or possession limit
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