Ashton Reservoir

Flows into the Henrys Fork Snake River

Recommended Fishing Water
Family Fishing Water

Ashton Reservoir in Fremont County is 371.6 acres.

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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.

Recommended Game Fish

Yellow Perch (Perca flavescens)
Brown Trout (Salmo trutta)
Rainbow Trout (Oncorhynchus mykiss)

Species Observed in Surveys

Brown Trout Salmo trutta observed in 2021
Cottus Cottus observed in 2021
Longnose Dace Rhinichthys cataractae observed in 2021
Rainbow Trout Oncorhynchus mykiss observed in 2021
Redside Shiner Richardsonius balteatus observed in 2021
Utah Chub Gila atraria observed in 2021
Utah Sucker Catostomus ardens observed in 2021
Yellow Perch Perca flavescens observed in 2021

Fish Stocking Records

Date	Species	Quantity	General Size
2024/04/19	Rainbow Trout - Triploid	2,030	Catchable (12-14 inches)
2024/04/16	Rainbow Trout - Triploid	13,045	Catchable (6+ inches)
2024/04/15	Rainbow Trout - Triploid	23,676	Catchable (12-14 inches)
2023/04/27	Rainbow Trout - Triploid	18,872	Catchable (6+ inches)
2023/04/26	Rainbow Trout - Triploid	15,887	Catchable (12-14 inches)
2023/04/14	Rainbow Trout - Triploid	2,042	Catchable (12-14 inches)
2023/04/13	Rainbow Trout - Triploid	1,992	Catchable (12-14 inches)
2022/04/20	Rainbow Trout - Triploid	38,955	Catchable (6+ inches)
2021/04/27	Rainbow Trout - Triploid	22,353	Catchable (12-14 inches)
2021/04/26	Rainbow Trout - Triploid	16,424	Catchable (6+ inches)
2020/04/29	Rainbow Trout - Triploid	22,472	Catchable (6+ inches)
2020/04/28	Rainbow Trout - Triploid	17,136	Catchable (6+ inches)
2019/04/16	Rainbow Trout - Triploid	24,121	Catchable (6+ inches)
2019/04/15	Rainbow Trout - Triploid	15,960	Catchable (12-14 inches)
2018/06/19	Rainbow Trout	6,600	Catchable (6+ inches)
2018/06/18	Rainbow Trout - Triploid	32,151	Catchable (6+ inches)
2017/06/27	Rainbow Trout - Triploid	12,917	Catchable (6+ inches)
2017/05/31	Rainbow Trout - Triploid	12,915	Catchable (6+ inches)
2017/05/02	Rainbow Trout - Triploid	12,919	Catchable (6+ inches)
2016/07/07	Rainbow Trout - Triploid	12,300	Catchable (6+ inches)
2016/06/06	Rainbow Trout - Triploid	13,020	Catchable (6+ inches)
2016/06/01	Rainbow Trout - Triploid	800	Catchable (6+ inches)
2016/05/06	Rainbow Trout - Triploid	12,653	Catchable (6+ inches)
2015/07/29	Rainbow Trout - Triploid	11,350	Catchable (6+ inches)
2015/06/22	Rainbow Trout - Triploid	13,700	Catchable (6+ inches)
2015/05/21	Rainbow Trout - Triploid	700	Catchable (6+ inches)
2015/05/14	Rainbow Trout - Triploid	13,000	Catchable (6+ inches)
2014/10/31	Rainbow Trout - Triploid	400	Catchable (6+ inches)
2014/06/25	Rainbow Trout	13,400	Catchable (6+ inches)
2014/06/04	Rainbow Trout	11,600	Catchable (6+ inches)
2014/05/01	Rainbow Trout	16,771	Catchable (6+ inches)
2013/06/24	Rainbow Trout - Triploid	400	Catchable (6+ inches)
2013/06/11	Rainbow Trout	28,930	Catchable (6+ inches)
2013/05/24	Rainbow Trout	3,875	Catchable (6+ inches)
2013/05/02	Rainbow Trout	7,750	Catchable (6+ inches)
2010/08/16	Rainbow Trout - Triploid	1,750	Catchable (6+ inches)
2010/08/02	Rainbow Trout - Triploid	3,375	Catchable (6+ inches)
2010/07/19	Rainbow Trout - Triploid	3,510	Catchable (6+ inches)
2010/07/06	Rainbow Trout - Triploid	3,450	Catchable (6+ inches)
2010/06/21	Rainbow Trout - Triploid	3,450	Catchable (6+ inches)
2010/06/01	Rainbow Trout - Triploid	3,440	Catchable (6+ inches)
2010/05/17	Rainbow Trout - Triploid	3,460	Catchable (6+ inches)
2010/05/10	Rainbow Trout - Triploid	3,600	Catchable (6+ inches)
2010/04/12	Rainbow Trout - Triploid	6,133	Catchable (6+ inches)
2009/11/20	Rainbow Trout - Triploid	990	Catchable (6+ inches)
2009/09/01	Rainbow Trout - Triploid	7,125	Catchable (6+ inches)
2009/08/18	Rainbow Trout - Triploid	3,640	Catchable (6+ inches)
2009/08/03	Rainbow Trout - Triploid	3,440	Catchable (6+ inches)
2009/07/21	Rainbow Trout - Triploid	3,080	Catchable (6+ inches)
2009/07/06	Rainbow Trout - Triploid	3,447	Catchable (6+ inches)
2009/06/24	Rainbow Trout - Triploid	3,625	Catchable (6+ inches)
2009/06/02	Rainbow Trout - Triploid	3,450	Catchable (6+ inches)
2009/05/18	Rainbow Trout - Triploid	3,450	Catchable (6+ inches)
2009/04/22	Rainbow Trout - Triploid	3,402	Catchable (6+ inches)
2008/09/16	Rainbow Trout - Triploid	2,805	Catchable (6+ inches)
2008/08/28	Rainbow Trout - Triploid	4,349	Catchable (6+ inches)
2008/08/18	Rainbow Trout - Triploid	3,237	Catchable (6+ inches)
2008/08/05	Rainbow Trout - Triploid	3,470	Catchable (6+ inches)
2008/07/22	Rainbow Trout - Triploid	3,480	Catchable (6+ inches)
2008/07/08	Rainbow Trout - Triploid	3,195	Catchable (6+ inches)
2008/06/24	Rainbow Trout - Triploid	3,437	Catchable (6+ inches)
2008/06/06	Rainbow Trout - Triploid	3,430	Catchable (6+ inches)
2008/05/23	Rainbow Trout - Triploid	3,474	Catchable (6+ inches)
2008/05/05	Rainbow Trout - Triploid	3,525	Catchable (6+ inches)
2007/09/06	Rainbow Trout - Triploid	7,041	Catchable (6+ inches)
2007/08/28	Rainbow Trout - Triploid	3,450	Catchable (6+ inches)
2007/08/15	Rainbow Trout - Triploid	1,080	Catchable (6+ inches)
2007/08/06	Rainbow Trout - Triploid	4,006	Catchable (6+ inches)
2007/07/25	Rainbow Trout - Triploid	1,748	Catchable (6+ inches)
2007/07/09	Rainbow Trout - Triploid	3,447	Catchable (6+ inches)
2007/06/29	Rainbow Trout - Triploid	3,456	Catchable (6+ inches)
2007/06/07	Rainbow Trout - Triploid	3,280	Catchable (6+ inches)
2007/05/22	Rainbow Trout - Triploid	3,439	Catchable (6+ inches)
2007/05/08	Rainbow Trout - Triploid	3,430	Catchable (6+ inches)
2006/10/04	Rainbow Trout - Triploid	1,430	Catchable (6+ inches)
2006/09/26	Rainbow Trout - Triploid	2,072	Catchable (6+ inches)
2006/09/14	Rainbow Trout - Triploid	3,135	Catchable (6+ inches)
2006/09/13	Rainbow Trout - Triploid	3,237	Catchable (6+ inches)
2006/08/28	Rainbow Trout - Triploid	3,442	Catchable (6+ inches)
2006/08/10	Rainbow Trout - Triploid	3,229	Catchable (6+ inches)
2006/07/27	Rainbow Trout - Triploid	3,438	Catchable (6+ inches)
2006/07/10	Rainbow Trout - Triploid	3,480	Catchable (6+ inches)
2006/06/28	Rainbow Trout - Triploid	3,406	Catchable (6+ inches)
2006/06/09	Rainbow Trout - Triploid	3,484	Catchable (6+ inches)
2006/05/22	Rainbow Trout - Triploid	4,174	Catchable (6+ inches)
2005/09/14	Rainbow Trout - Triploid	6,973	Catchable (6+ inches)
2005/08/31	Rainbow Trout - Triploid	3,433	Catchable (6+ inches)
2005/08/08	Rainbow Trout - Triploid	3,425	Catchable (6+ inches)
2005/07/27	Rainbow Trout - Triploid	3,430	Catchable (6+ inches)
2005/07/11	Rainbow Trout - Triploid	3,324	Catchable (6+ inches)
2005/07/01	Rainbow Trout - Triploid	3,435	Catchable (6+ inches)
2005/06/20	Rainbow Trout - Triploid	3,461	Catchable (6+ inches)
2005/05/26	Rainbow Trout - Triploid	3,456	Catchable (6+ inches)
2005/05/10	Rainbow Trout - Triploid	3,448	Catchable (6+ inches)
2004/09/09	Rainbow Trout - Triploid	6,868	Catchable (6+ inches)
2004/08/17	Rainbow Trout - Triploid	3,437	Catchable (6+ inches)
2004/08/03	Rainbow Trout - Triploid	3,393	Catchable (6+ inches)
2004/07/20	Rainbow Trout - Triploid	3,550	Catchable (6+ inches)
2004/07/08	Rainbow Trout - Triploid	3,442	Catchable (6+ inches)
2004/06/30	Rainbow Trout - Triploid	3,454	Catchable (6+ inches)
2004/06/08	Rainbow Trout - Triploid	3,434	Catchable (6+ inches)
2004/05/27	Rainbow Trout - Triploid	3,445	Catchable (6+ inches)
2004/05/13	Rainbow Trout - Triploid	3,402	Catchable (6+ inches)
2003/09/29	Rainbow Trout - Triploid	3,288	Catchable (6+ inches)
2003/09/09	Rainbow Trout - Triploid	3,445	Catchable (6+ inches)
2003/08/19	Rainbow Trout - Triploid	3,442	Catchable (6+ inches)
2003/08/07	Rainbow Trout - Triploid	3,666	Catchable (6+ inches)
2003/07/28	Rainbow Trout - Triploid	871	Catchable (6+ inches)
2003/07/22	Rainbow Trout - Triploid	2,563	Catchable (6+ inches)
2003/07/08	Rainbow Trout - Triploid	3,443	Catchable (6+ inches)
2003/06/27	Rainbow Trout - Triploid	819	Catchable (6+ inches)
2003/06/24	Rainbow Trout - Triploid	2,622	Catchable (6+ inches)
2003/06/10	Rainbow Trout - Triploid	3,308	Catchable (6+ inches)
2003/05/27	Rainbow Trout - Triploid	3,438	Catchable (6+ inches)
2003/05/13	Rainbow Trout - Triploid	3,432	Catchable (6+ inches)
2002/09/23	Rainbow Trout - Triploid	2,646	Catchable (6+ inches)
2002/09/11	Rainbow Trout - Triploid	2,808	Catchable (6+ inches)
2002/08/28	Rainbow Trout - Triploid	2,700	Catchable (6+ inches)
2002/08/13	Rainbow Trout - Triploid	2,723	Catchable (6+ inches)
2002/07/24	Rainbow Trout - Triploid	2,805	Catchable (6+ inches)
2002/07/09	Rainbow Trout - Triploid	2,747	Catchable (6+ inches)
2002/06/25	Rainbow Trout - Triploid	2,750	Catchable (6+ inches)
2002/06/13	Rainbow Trout - Triploid	2,744	Catchable (6+ inches)
2002/05/30	Rainbow Trout - Triploid	2,762	Catchable (6+ inches)
2002/05/15	Rainbow Trout - Triploid	2,832	Catchable (6+ inches)
2001/09/21	Rainbow Trout - Triploid	1,755	Catchable (6+ inches)
2001/09/14	Rainbow Trout - Triploid	1,800	Catchable (6+ inches)
2001/09/05	Rainbow Trout	1,980	Catchable (6+ inches)
2001/08/21	Rainbow Trout	2,747	Catchable (6+ inches)
2001/08/07	Rainbow Trout	2,714	Catchable (6+ inches)
2001/07/26	Rainbow Trout	2,744	Catchable (6+ inches)
2001/07/11	Rainbow Trout	1,942	Catchable (6+ inches)
2001/06/21	Rainbow Trout	2,754	Catchable (6+ inches)
2001/06/06	Rainbow Trout	2,760	Catchable (6+ inches)
2001/05/30	Rainbow Trout	799	Catchable (6+ inches)
2001/05/23	Rainbow Trout	2,756	Catchable (6+ inches)
2001/05/09	Rainbow Trout	2,758	Catchable (6+ inches)
2000/09/06	Rainbow Trout	5,069	Catchable (6+ inches)
2000/08/22	Rainbow Trout	3,360	Catchable (6+ inches)
2000/08/08	Rainbow Trout	2,752	Catchable (6+ inches)
2000/07/18	Rainbow Trout	2,610	Catchable (6+ inches)
2000/07/05	Rainbow Trout	2,777	Catchable (6+ inches)
2000/06/26	Rainbow Trout	2,646	Catchable (6+ inches)
2000/06/13	Rainbow Trout	2,728	Catchable (6+ inches)
2000/05/24	Rainbow Trout	2,772	Catchable (6+ inches)
2000/05/04	Rainbow Trout	2,790	Catchable (6+ inches)
1999/09/22	Rainbow Trout	1,104	Catchable (6+ inches)
1999/09/20	Rainbow Trout	2,700	Catchable (6+ inches)
1999/09/10	Rainbow Trout	2,750	Catchable (6+ inches)
1999/08/24	Rainbow Trout	2,755	Catchable (6+ inches)
1999/08/09	Rainbow Trout	1,225	Catchable (6+ inches)
1999/08/03	Rainbow Trout	1,528	Catchable (6+ inches)
1999/07/19	Rainbow Trout	2,750	Catchable (6+ inches)
1999/07/06	Rainbow Trout	2,732	Catchable (6+ inches)
1999/06/22	Rainbow Trout	2,750	Catchable (6+ inches)
1999/06/02	Rainbow Trout	2,250	Catchable (6+ inches)
1999/05/24	Rainbow Trout	2,732	Catchable (6+ inches)
1999/05/07	Rainbow Trout	2,775	Catchable (6+ inches)
1998/09/21	Rainbow Trout	2,730	Catchable (6+ inches)
1998/09/09	Rainbow Trout	2,770	Catchable (6+ inches)
1998/08/17	Rainbow Trout	2,492	Catchable (6+ inches)
1998/08/03	Rainbow Trout	2,704	Catchable (6+ inches)
1998/07/20	Rainbow Trout	2,782	Catchable (6+ inches)
1998/07/07	Rainbow Trout	2,820	Catchable (6+ inches)
1998/06/22	Rainbow Trout	2,754	Catchable (6+ inches)
1998/06/01	Rainbow Trout	2,751	Catchable (6+ inches)
1998/05/20	Rainbow Trout	2,740	Catchable (6+ inches)
1998/05/04	Rainbow Trout	2,749	Catchable (6+ inches)
1997/09/29	Rainbow Trout	1,140	Catchable (6+ inches)
1997/09/25	Rainbow Trout	1,764	Catchable (6+ inches)
1997/09/08	Rainbow Trout	2,842	Catchable (6+ inches)
1997/08/28	Rainbow Trout	2,870	Catchable (6+ inches)
1997/08/08	Rainbow Trout	2,280	Catchable (6+ inches)
1997/08/04	Rainbow Trout	2,526	Catchable (6+ inches)
1997/07/21	Rainbow Trout	2,446	Catchable (6+ inches)
1997/07/07	Rainbow Trout	2,712	Catchable (6+ inches)
1997/06/16	Rainbow Trout	2,750	Catchable (6+ inches)
1997/06/02	Rainbow Trout	2,754	Catchable (6+ inches)
1997/05/20	Rainbow Trout	2,740	Catchable (6+ inches)
1997/05/05	Rainbow Trout	2,757	Catchable (6+ inches)
1996/09/17	Rainbow Trout	2,805	Catchable (6+ inches)
1996/09/05	Rainbow Trout	2,772	Catchable (6+ inches)
1996/08/20	Rainbow Trout	2,818	Catchable (6+ inches)
1996/08/05	Rainbow Trout	2,782	Catchable (6+ inches)
1996/07/23	Rainbow Trout	1,094	Catchable (6+ inches)
1996/07/22	Rainbow Trout	1,400	Catchable (6+ inches)
1996/07/08	Rainbow Trout	2,756	Catchable (6+ inches)
1996/06/17	Rainbow Trout	2,745	Catchable (6+ inches)
1996/06/03	Rainbow Trout	2,750	Catchable (6+ inches)
1996/05/20	Rainbow Trout	2,740	Catchable (6+ inches)
1996/05/07	Rainbow Trout	2,772	Catchable (6+ inches)
1995/08/29	Rainbow Trout	2,749	Catchable (6+ inches)
1995/08/08	Rainbow Trout	2,770	Catchable (6+ inches)
1995/07/27	Rainbow Trout	2,737	Catchable (6+ inches)
1995/07/14	Rainbow Trout	2,773	Catchable (6+ inches)
1995/06/28	Rainbow Trout	2,728	Catchable (6+ inches)
1995/06/09	Rainbow Trout	2,750	Catchable (6+ inches)
1995/05/23	Rainbow Trout	5,497	Catchable (6+ inches)
1994/08/26	Rainbow Trout	3,900	Catchable (6+ inches)
1994/08/09	Rainbow Trout	2,548	Catchable (6+ inches)
1994/07/29	Rainbow Trout	2,037	Catchable (6+ inches)
1994/07/15	Rainbow Trout	2,525	Catchable (6+ inches)
1994/06/28	Rainbow Trout	2,760	Catchable (6+ inches)
1994/06/13	Rainbow Trout	2,750	Catchable (6+ inches)
1994/05/25	Rainbow Trout	5,475	Catchable (6+ inches)
1993/09/02	Rainbow Trout	5,504	Catchable (6+ inches)
1993/08/05	Rainbow Trout	2,642	Catchable (6+ inches)
1993/07/15	Rainbow Trout	2,769	Catchable (6+ inches)
1993/07/01	Rainbow Trout	5,592	Catchable (6+ inches)
1993/05/26	Rainbow Trout	5,501	Catchable (6+ inches)
1992/11/16	Rainbow Trout	6,062	Catchable (6+ inches)
1992/07/14	Rainbow Trout	7,370	Fingerling (3-6 inches)
1989/07/28	Rainbow Trout	480	Catchable (6+ inches)
1989/07/06	Rainbow Trout	450	Catchable (6+ inches)
1989/06/07	Rainbow Trout	537	Catchable (6+ inches)
1989/05/16	Rainbow Trout	2,000	Catchable (6+ inches)
1988/08/22	Rainbow Trout	840	Catchable (6+ inches)
1988/08/10	Rainbow Trout	1,170	Catchable (6+ inches)
1988/07/20	Rainbow Trout	1,050	Catchable (6+ inches)
1988/07/05	Rainbow Trout	1,050	Catchable (6+ inches)
1988/06/21	Rainbow Trout	1,500	Catchable (6+ inches)
1988/06/03	Rainbow Trout	1,500	Catchable (6+ inches)
1988/04/19	Rainbow Trout	3,009	Catchable (6+ inches)
1987/08/05	Rainbow Trout	2,002	Catchable (6+ inches)
1987/07/16	Rainbow Trout	2,520	Catchable (6+ inches)
1987/06/22	Rainbow Trout	3,000	Catchable (6+ inches)
1987/05/20	Rainbow Trout	2,100	Catchable (6+ inches)
1987/05/19	Rainbow Trout	3,000	Catchable (6+ inches)
1987/03/25	Rainbow Trout	2,275	Catchable (6+ inches)
1986/08/08	Rainbow Trout	5,001	Catchable (6+ inches)
1986/07/18	Rainbow Trout	40,100	Fingerling (3-6 inches)
1986/07/11	Rainbow Trout	6,000	Catchable (6+ inches)
1986/06/13	Rainbow Trout	8,971	Catchable (6+ inches)
1986/03/18	Rainbow Trout	1,001	Catchable (6+ inches)
1986/03/17	Rainbow Trout	1,001	Catchable (6+ inches)
1985/09/17	Henrys Lake Cutthroat Trout	20,999	Fingerling (3-6 inches)
1985/07/22	Snake River Fine-Spotted Cutthroat Trout	2,995	Catchable (6+ inches)
1985/07/22	Snake River Fine-Spotted Cutthroat Trout	9,985	Fingerling (3-6 inches)
1985/07/15	Bonneville Cutthroat Trout	8,835	Fingerling (3-6 inches)
1985/06/24	Rainbow Trout	20,378	Fingerling (3-6 inches)
1985/06/19	Rainbow Trout	20,085	Fingerling (3-6 inches)
1985/06/18	Rainbow Trout	1,050	Catchable (6+ inches)
1985/06/17	Rainbow Trout	3,000	Catchable (6+ inches)
1985/06/03	Rainbow Trout	3,150	Catchable (6+ inches)
1985/05/29	Rainbow Trout	2,100	Catchable (6+ inches)

Source: IDFG Fish Stocking Database.

Licenses and Tags

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1-800-554-8685
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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 Ashton Reservoir.

Upper Snake Region Bag Limits

Bass (Largemouth and Smallmouth)

Bass - no bag, length, or possession limits

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 15

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, Golden Trout, Lake Trout, Arctic Grayling, Cutthroat Trout, Rainbow Trout, and trout hybrids (e.g. Tiger Trout)

Trout limit is 6, all species combined
Bull Trout and Brook Trout are listed separately

Walleye (Have not been stocked intentionally in this Region. May be harmful to existing fisheries.)

No bag, length, or possession limits, harvest is encouraged

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 apply when fishing for whitefish

Protected Nongame Fish including Bluehead Sucker (also known as Green Sucker)

May not be harvested or possessed

All Other Fish Species includes bullfrogs and crayfish

No bag, length or possession limit

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