Fishing in Fremont County, Idaho
County seat: Saint Anthony. Population 13,388.
- 16lake pages
- 35launch sites
- 7river pages
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Where the fishing in Fremont County starts
At the 2020 Census Fremont County held 13,388 residents, with county offices in Saint Anthony. By the Planner's count, 100% of the county's listed lakes and streams belong to the IDFG Upper Snake Region. 4 high mountain lakes in the county are filed as high mountain lakes.
Largest among 16 lake pages is Island Park Reservoir; the set spans 14,676 acres. The access layers map 35 launch sites in the county (20 IDFG, 12 Forest Service and 3 BLM). Bank anglers get 5 walk-in access sites on the IDFG layer.
Census 2020 population and county seat; IDFG Idaho Fishing Planner (list of Idaho waters), read November 7, 2026. IDFG Fishing and Boating Access Sites layer (ArcGIS service), read November 7, 2026.
Every IDFG launch and lake page in Fremont County, pinned
IDFG Fishing and Boating Access Sites, BLM and Forest Service launch points, Fishing Planner lake points (outlet) and stream midpoints. Checked November 2026.
Which Fremont County lakes have a full guide
| Lake | Acres | Launches | Kind | Game fish IDFG names |
|---|---|---|---|---|
| Island Park Reservoir | 7,280 | 9 | reservoir | kokanee, rainbow trout, brook trout |
| Henrys Lake | 6,077 | 4 | lake | cutthroat trout, brook trout, cutbow |
| Ashton Reservoir | 372 | 1 | reservoir | yellow perch, brown trout, rainbow trout |
| Indian Lake (Fremont County) | 196 | 0 | lake | |
| Silver Lake | 165 | 0 | lake | |
| Quayles Lake | 149 | 0 | lake | |
| Trudes Reservoir | 89 | 0 | reservoir | |
| Lower Arcadia Reservoir | 72 | 0 | reservoir | |
| Beaver Pond | 62 | 0 | lake | |
| Lemon Lake | 40 | 0 | lake | |
| Horseshoe Lake | 36 | 0 | lake | rainbow trout, arctic grayling |
| Upper Arcadia Reservoir | 35 | 0 | reservoir | |
| Robinson Lake (Fremont County) | 34 | 0 | lake | |
| Egin Lakes | 31 | 0 | lake | |
| East Harriman Fish Pond | 31 | 0 | lake | rainbow trout |
| Blue Creek Reservoir (Fremont County) | 8 | 0 | reservoir | brook trout, rainbow trout, largescale sucker |
Surface acres as listed in the IDFG Idaho Fishing Planner, read November 7, 2026. Game fish are the Planner’s recommended species; IDFG prints no lake depths there.
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Bars count lake pages within 50 miles of Saint Anthony where IDFG recommends or stocks each fish; rainbow trout tops it.
IDFG Fishing Planner recommended game fish and stocking rows, counted per lake page within 50 miles; not a creel survey.
Unpaged lakes across Fremont County
27 further lakes of Fremont County, many of them alpine, stay on this list until more is published.
| Water | Acres | Kind | Nearest town |
|---|---|---|---|
| Thompson Hole | 22 | lake | Driggs |
| Bear Lake | 20 | lake | St. Anthony |
| Elk Creek Reservoir | 20 | reservoir | St. Anthony |
| Sheep Creek Reservoir | 20 | reservoir | St. Anthony |
| Upper Goose Lake | 18 | lake | Driggs |
| Bishop Lake | 17 | lake | St. Anthony |
| Steele Lake | 16 | lake | Driggs |
| Swan Lake (Fremont County) | 16 | lake | Driggs |
| Tule Lake | 13 | lake | Driggs |
| Buffalo Lake | 13 | high mountain lake | St. Anthony |
| Davis Lake | 9 | lake | St. Anthony |
| Cub Lake | 7 | lake | St. Anthony |
| Porcupine Lake | 7 | lake | Driggs |
| Lily Pond | 6 | lake | St. Anthony |
| Clark Lake | 5 | high mountain lake | St. Anthony |
| Lower Goose Lake | 5 | lake | Driggs |
| Mackerts Pond | 5 | lake | St. Anthony |
| Icehouse Creek Lake | 5 | lake | St. Anthony |
| Snow Creek Pond | 5 | lake | St. Anthony |
| Golden Lake | 4 | lake | St. Anthony |
| Edwards Lake | 4 | high mountain lake | St. Anthony |
| Chain Lakes | 4 | lake | Driggs |
| Paddy Lake | 4 | lake | Driggs |
| Lake Marie | 3 | high mountain lake | St. Anthony |
| Hidden Lake Reservoir | 1 | reservoir | St. Anthony |
| Sagebrush Spring Reservoir | 1 | reservoir | St. Anthony |
| Mill Pond | 1 | lake | St. Anthony |
Trail-reached alpine lakes account for 4. Idaho high mountain lakes
IDFG Idaho Fishing Planner (list of Idaho waters), read November 7, 2026.
River guides crossing Fremont County
- Henrys Fork Snake RiverIDFG recommended water, 112.5 mi Planner length
- Teton RiverIDFG recommended water, 1 USGS gauge, 81.5 mi Planner length
- Falls RiverIDFG recommended water, 64.2 mi Planner length
- Warm RiverIDFG recommended water, 36.5 mi Planner length
- Sand Creek (Fremont County)1 launch, 18.9 mi Planner length
- Mill Creek2 launches, 3 mi Planner length
- South Teton River22.8 mi Planner length
Planner streams of Fremont County without a guide (140)
- Conant Creek37.1 mi
- Sheridan Creek28.3 mi
- Robinson Creek26 mi
- Thirsty Creek25 mi
- Boundary Creek24.8 mi
- Squirrel Creek22.6 mi
- Bitch Creek21.4 mi
- Snow Creek15.6 mi
- Targhee Creek13.9 mi
- Snow Creek13.8 mi
- Farmers Own Canal13.7 mi
- Rock Creek13.7 mi
- Moose Creek13.1 mi
- Spring Creek (Fremont County)12.7 mi
- North Fork Fish Creek12.3 mi
- Willow Creek11.9 mi
- Icehouse Creek11.8 mi
- Canyon Creek Canal10.4 mi
- Porcupine Creek10.2 mi
- Pine Creek9.8 mi
- Wyoming Creek9.7 mi
- Partridge Creek9.2 mi
- Fish Creek9 mi
- Boone Creek8.8 mi
- Buffalo River8.7 mi
- Tygee Creek8.5 mi
- Little Robinson Creek8.4 mi
- Howard Creek8.3 mi
- South Fork Partridge Creek8.3 mi
- Dry Creek8.2 mi
- East Teton Canal8.2 mi
- Moose Creek8.2 mi
- North Fork Partridge Creek8.2 mi
- Rattlesnake Creek8 mi
- Unnamed Stream8 mi
- Chick Creek7.9 mi
- Warm Slough7.9 mi
- Blue Creek7.8 mi
- Yale Creek7.7 mi
- North Fork Split Creek7.6 mi
- Dry Creek7.5 mi
- Arcadia Canal7.4 mi
- Timber Creek7.3 mi
- Granite Creek6.8 mi
- Bootjack Creek6.7 mi
- Myers Creek6.7 mi
- South Fork Split Creek6.7 mi
- Porcupine Canyon6.5 mi
- Teton Canal6.5 mi
- Sheep Creek6.4 mi
- Survey Draw6.4 mi
- Duck Creek6.3 mi
- Schneider Creek6.2 mi
- Cascade Creek6.1 mi
- Twin Creek5.9 mi
- Anderson Mill Canyon5.8 mi
- East Fork Hotel Creek5.8 mi
- Hotel Creek5.8 mi
- Dry Fork5.7 mi
- Willow Creek5.7 mi
- Crooked Creek5.6 mi
- Kerr Canyon5.6 mi
- White Elephant Canyon5.5 mi
- Middle Fork Split Creek5.4 mi
- Rock Creek5.3 mi
- Split Creek5.1 mi
- Dry Fork5 mi
- Dry Robinson Creek5 mi
- Jesse Creek5 mi
- Keg Spring Creek5 mi
- Toms Creek5 mi
- West Fork Hotel Creek5 mi
- Bartlett Slough4.7 mi
- Hope Creek4.7 mi
- Black Springs Creek4.6 mi
- Strong Creek4.6 mi
- Blue Creek4.5 mi
- Cold Spring Creek4.4 mi
- Sawtell Creek4.4 mi
- Swamp Hollow4.4 mi
Gauge stations of Fremont County
| USGS gauge | Latest reading | Time (ET) |
|---|---|---|
| Henrys Fork At St Anthony Id | 1,090 cfs, 3.40 ft gage height | Nov 12 7:45 pm |
| Henrys Fork Nr Ashton Id | 581 cfs, 2.68 ft gage height | Nov 12 8:15 pm |
| Fall River Nr Chester Id | 440 cfs, 2.26 ft gage height | Nov 12 8:15 pm |
| Fall River Nr Ashton Id | 440 cfs, 4.07 ft gage height | Nov 12 7:45 pm |
| Fall River Ab Yellowstone Canal Nr Squirrel Id | 423 cfs, 5.35 ft gage height | Nov 12 7:45 pm |
| Teton River Nr St Anthony Id | 323 cfs, 2.08 ft gage height | Nov 12 8:15 pm |
US Geological Survey provisional data, retrieved Nov 12, 2026 8:32 pm ET. Provisional readings can be revised.
IDFG Idaho Fishing Planner (list of Idaho waters), read November 7, 2026. Stream lengths as printed in the Planner; USGS gauges live.
The Fremont County stocking log
Hatchery trucks made 1,538 listed stops in Fremont County, leaving 21,377,923 fish in 11 waters.
- Island Park ReservoirRainbow Trout – Triploid, 10,514 fish, Catchable (12-14 inches), October 22, 2026
- East Harriman Fish PondRainbow Trout – Triploid, 1,500 fish, Catchable (12-14 inches), October 16, 2026
- Horseshoe LakeRainbow Trout – Triploid, 2,000 fish, Catchable (6+ inches), September 29, 2026
- Henrys LakeBrook Trout – Triploid, 114,810 fish, Fingerling (3-6 inches), September 22, 2026
- Henrys LakeCutbow – Cutthroat x Rainbow Trout – Triploid, 257,850 fish, Fry (0-3 inches), September 22, 2026
- Henrys LakeCutthroat Trout – Yellowstone, 1,067,432 fish, Fry (0-3 inches), September 21, 2026
- Teton RiverRainbow Trout – Triploid, 2,000 fish, Catchable (6+ inches), August 19, 2026
- Henrys Fork Snake RiverRainbow Trout – Triploid, 1,563 fish, Catchable (6+ inches), August 18, 2026
- Henrys Fork Snake RiverRainbow Trout – Triploid, 1,562 fish, Catchable (6+ inches), August 4, 2026
- Henrys Fork Snake RiverRainbow Trout – Triploid, 1,675 fish, Catchable (6+ inches), July 30, 2026
- Warm RiverRainbow Trout – Triploid, 900 fish, Catchable (6+ inches), July 23, 2026
- Henrys Fork Snake RiverRainbow Trout – Triploid, 1,675 fish, Catchable (6+ inches), July 16, 2026
Stocking rows as printed on the IDFG Fishing Planner water pages (date, species, number and size as listed), read November 7, 2026. Newest releases first.
Mapped water access across Fremont County
- Ashton Reservoir boat ramplaunch site, IDFG, boating access, ramp, dock, restroom
- Ashton Reservoir launchAshton Reservoir, Forest Service, lake and pond fishing
- Box Canyon Boating Ramp on Island Park ReservoirIsland Park Reservoir, Forest Service, boating – motorized, ramp
- Box Canyon boat ramp on Island Park ReservoirIsland Park Reservoir, IDFG, fishing access, ramp, restroom
- Buttermilk Boat Ramp on Island Park Reservoir (south)Island Park Reservoir, Forest Service, boating – motorized, ramp
- Buttermilk boat ramp on Island Park Reservoir (north)Island Park Reservoir, IDFG, boating access, ramp, restroom, camping
- Chester Dam boat ramplaunch site, IDFG, fishing access, ramp, restroom
- Fun Farm Bridge boat ramplaunch site, IDFG, boating access, ramp, restroom
- Henry's Lake launchHenrys Lake, Forest Service, lake and pond fishing
- Henrys Lake – Frome Park boat rampHenrys Lake, IDFG, boating access, ramp, dock, restroom, camping
- Henrys Lake – South Shore boat rampHenrys Lake, IDFG, boating access, ramp, restroom, camping
- Island Park Boating Site boat rampIsland Park Reservoir, Forest Service, boating – motorized, ramp
- Island Park boat rampIsland Park Reservoir, IDFG, boating access, ramp, dock, restroom
- Last Chance boat ramplaunch site, IDFG, fishing access, restroom
- McCrea Bridge Boat Ramplaunch site, Forest Service, boating – motorized, ramp
- McCrea boat ramplaunch site, IDFG, boating access, ramp, restroom, camping
- Mill Creek boat rampMill Creek, IDFG, boating access, ramp, dock, restroom, camping
- Ora Bridge boat ramplaunch site, IDFG, fishing access, restroom
- Red Road Bridge boat ramplaunch site, IDFG, boating access, ramp, restroom
- Riverside boat ramplaunch site, IDFG, fishing access, ramp, restroom, camping
- Sand Creek Ponds boat rampSand Creek, IDFG, fishing access, restroom, camping
- Spring Hollow boat ramplaunch site, IDFG, boating access, ramp, restroom, camping
- Stone Bridge boat ramplaunch site, IDFG, fishing access, restroom
- Teton Dam boat ramplaunch site, IDFG, boating access, ramp, camping
- Vernon Bridge boat ramplaunch site, IDFG, fishing access, restroom
- West End boat ramp on Island Park ReservoirIsland Park Reservoir, IDFG, boating access, ramp, dock, restroom, camping
- Big Springs Boating Launchlaunch site, Forest Service, boating – non-motorized
- East Hatchery Ford Boating Site launchlaunch site, Forest Service, boating – non-motorized
- Henry's Lake – Boat AccessHenrys Lake, BLM, boat launch
- Island Park Reservoir boat rampIsland Park Reservoir, Forest Service, boating – motorized, ramp
- Last Chance Fisherman Accesslaunch site, Forest Service, lake and pond fishing
- Mill Creek Boat RampMill Creek, Forest Service, boating – motorized, ramp
- Red Road Bridge Boat Accesslaunch site, BLM, boat ramp, ramp
- Trestle Bridge launchlaunch site, BLM, boat launch
- West End Boat Ramp on Island Park ReservoirIsland Park Reservoir, Forest Service, boating – motorized, ramp
Walk-in IDFG access in Fremont County (5)
- Buffalo ADA fishing accessfishing access, restroom, camping
- Chester Wetland fishing accessfishing access, restroom
- Fall River fishing accessfishing access, restroom
- Warm River ADA fishing accessfishing access, restroom, camping
- Jump Off Canyon fishing accessfishing access, restroom
IDFG Fishing and Boating Access Sites layer (ArcGIS service), read November 7, 2026. BLM and Forest Service points as published; lanes and ramp counts are not fields in any layer.
IDFG region table for Fremont County
Rows below come from the IDFG Upper Snake Region, which covers the bulk of the county's Planner waters; water-specific rules override them. The statute behind Idaho licenses, Code 36-416, puts the annual fishing fee at $28.75 resident and $106.25 nonresident; sale prices run a little higher.
| Group | Rule as printed |
|---|---|
| Bass | 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 | Trout limit is 6, all species combined; Bull Trout and Brook Trout are listed separately |
| Walleye | No bag, length, or possession limits, harvest is encouraged (Have not been stocked intentionally in this Region. May be harmful to existing fisheries.) |
| 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 | May not be harvested or possessed (also known as Green Sucker) |
| All Other Fish Species | No bag, length or possession limit |
Special rules on Fremont County lakes and streams (9)
- Blue Creek Reservoir (Fremont County)motorized watercraft prohibited
- Falls RiverAll Waters Open All Year
- Henrys Fork Snake RiverAll Waters Open All Year
- Henrys LakeClosed to fishing
- Horseshoe LakeNo motors
- Silver LakeClosed to fishing
- South Teton RiverAll Waters Open All Year
- Teton RiverAll Waters Open All Year
- Warm RiverAll Waters Open All Year
Region bag limits from Idaho Fishing Seasons and Rules, 2025-2027 for the Upper Snake Region, as printed on IDFG Fishing Planner water pages (the brochure PDF on idfg.idaho.gov was unreachable during site maintenance), read November 7, 2026. Fishing license fees as set in Idaho Code 36-416 (statute; IDFG sale prices add vendor and processing fees), read November 7, 2026.
IDFG record announcements close to Fremont County
| Species | Record | Kind | Water | Date |
|---|---|---|---|---|
| Yellowstone Cutthroat Trout | 3.08 (pounds), 19 inches | certified weight | Henrys Lake | date not printed |
Idaho state record fish, read November 8, 2026. A partial list: records IDFG announced in 2026.
Fremont County fly shops and guide services
Idaho fly shops and bait counters of Fremont County
- Henry's Fork Anglersbait and tackle shop, Island Park
- House of Harropbait and tackle shop, Saint Anthony
- Idaho Irresistiblesbait and tackle shop, Ashton
- TRR – Henry's Fork Shuttle Servicebait and tackle shop, Ashton
- Three Rivers Ranch Outfittersbait and tackle shop, Ashton
Guided trips listed for Fremont County
- TroutHunterfly shop and guide service, Island Park
Yellow Pages and chain store listings, guide listings (city of business); retrieved November 7, 2026.
Idaho backroads fanning out from Fremont County
Town guides inside Fremont County
- St. Anthonypop. 3,606
County pages next to Fremont County
- Madison County31 miles south
- Teton County34 miles southeast
- Clark County43 miles west
- Jefferson County51 miles southwest
Piscifun reels and line packed for Fremont County
Piscifun and Amazon links are affiliate links; the site earns a commission on qualifying purchases.
Gem State water near Fremont County, on camera
Photo: The38superdude, CC BY-SA 3.0
Photo: Ken Lund, CC BY-SA 2.0
Photo: BLMIdaho, CC BY 2.0
Photo: Doug Kerr, CC BY-SA 2.0
Fishing within Fremont County: the usual questions
Where can a trailer reach the water in Fremont County?
There are 35 launch sites, split as 20 IDFG, 12 Forest Service and 3 BLM.
Which Planner lake hands Fremont County anglers the most surface?
Island Park Reservoir, at 7,280 acres in the IDFG Fishing Planner.
Which IDFG game fish should a Fremont County visitor pack for?
Rainbow trout lead the count of lake pages within 50 miles, followed by yellow perch, cutthroat trout – yellowstone and brook trout.
Which Fremont County stores stock hooks, sinkers and Idaho flies?
5 listings, such as Henry's Fork Anglers.
How many Idaho outfitters list Fremont County as home base?
Listings put 1 guide listing here.
Which Idaho town serves as seat of Fremont County?
It is Saint Anthony.
What is the license fee to fish Fremont County?
The statute behind Idaho licenses, Code 36-416, puts the annual fishing fee at $28.75 resident and $106.25 nonresident; sale prices run a little higher.
Which Idaho county pages sit next to Fremont County?
Try Madison County, Teton County and Clark County.
Which region table applies in Fremont County?
The IDFG Upper Snake Region takes 100% of them; the rest follow neighbouring regions.
Does the 2025-2027 brochure print rules for Fremont County water?
The Planner prints special rules for 9 county waters with a page here, starting with Blue Creek Reservoir (Fremont County); the list above shows the first ones.
Which 2026 records were set in Fremont County?
Yellowstone Cutthroat Trout, 3.08 (pounds), 19 inches (certified weight), from Henrys Lake, announced by IDFG in 2026.
Where is the stocked water in Fremont County?
1,538 IDFG releases listed on Planner pages, 21,377,923 fish; the newest went into Island Park Reservoir on Oct. 22, 2026.
Spend a Gem State morning on Fremont County water
River pages list game fish and USGS flow.