Grays Lake Fishing
A 23,138-acre Idaho lake in Bonneville and Caribou counties.
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An opening look at Grays Lake
Spread over 23,138 acres, Grays Lake sits in Bonneville and Caribou counties by the Planner figure. Regional biologists of the IDFG Southeast Region oversee it. Soda Springs, some 30 miles distant, is the nearest town. IDFG location note: Flows into the Grays Lake Outlet.
Agency layers show no put-in on it.
Surface acres as listed in the IDFG Idaho Fishing Planner (water page), read November 7, 2026. Census 2020 places.
Getting a boat wet on Grays Lake
No launch on Grays Lake shows in the agency layers; the closest listed sites follow.
Launch sites a short haul from Grays Lake
- Pebble Beach boat ramp on Blackfoot ReservoirBlackfoot Reservoir, 13 miles southwest
- Poison Creek boat ramp on Blackfoot ReservoirBlackfoot Reservoir, 15 miles west
Walk-in fishing access near Grays Lake
- Grays Lake Outlet fishing accessfishing access, camping, 5 miles
IDFG Fishing and Boating Access Sites layer, BLM Idaho recreation site points and USDA Forest Service recreation opportunities (EDW), read November 7, 2026.
Keeping fish at Grays Lake
| Group | Region rule as printed |
|---|---|
| Bass | Bass limit is 6, both species combined; None under 14 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 |
| Cisco | Cisco limit is 30 |
| Kokanee | Kokanee limit is 6 |
| 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; Brook Trout 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 apply when fishing for whitefish |
| Protected Nongame Fish | May not be harvested or possessed (also known as Green Sucker) |
| All Other Fish Species | No bag, length or possession limit |
Grays Lake follows the IDFG Southeast Region limits unless its own rules say otherwise.
Fishing here takes an Idaho fishing license; Idaho Code 36-416 sets the annual statutory fee at $28.75 for residents and $106.25 for nonresidents, and steelhead or salmon fishing takes its own permit.
Region bag limits from Idaho Fishing Seasons and Rules, 2025-2027 for the Southeast 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.
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Blackfoot Reservoir leads this group on size, 16,888 acres by the Planner.
| Lake | Distance | Acres | Region | Recommended fish | Launch sites |
|---|---|---|---|---|---|
| Grays Lake | 23,138 | Southeast Region | 0 | 0 | |
| Little Valley Reservoir (Bonneville County) | 5 miles west | 258 | Southeast Region | 0 | 0 |
| Little Blackfoot Reservoir | 10 miles south | 48 | Southeast Region | 0 | 0 |
| Blackfoot Reservoir | 15 miles southwest | 16,888 | Southeast Region | 3 | 3 |
| Dike Lake | 19 miles southwest | 57 | Southeast Region | 0 | 1 |
| Hole in the Rock | 19 miles southwest | 144 | Southeast Region | 0 | 0 |
IDFG Idaho Fishing Planner and the agency access layers, read November 7, 2026.
A short hop from Grays Lake
More Idaho lakes and reservoirs around Grays Lake
- Little Valley Reservoir (Bonneville County)5 miles west
- Little Blackfoot Reservoir10 miles south
- Blackfoot Reservoir15 miles southwest
- Dike Lake19 miles southwest
- Hole in the Rock19 miles southwest
Stores to hit before Grays Lake
- The Dam Storebait and tackle shop, Irwin, 22 miles
- Bass Pro Shopsbait and tackle shop, Ammon
- Cabela's, 3693 S 25th Ebait and tackle shop, Ammon
- Dick's Sporting Goods, 2240 E 17th Stbait and tackle shop, Idaho Falls
- Jimmy's All Seasons Anglerbait and tackle shop, Idaho Falls
- Northwest Anglerbait and tackle shop, Idaho Falls
Hiring an outfitter for Grays Lake
- Hyde Drift Boatsfishing guide, Idaho Falls, (208) 529-4343
Towns a reasonable drive from Grays Lake
- Soda Springs30 miles
- Ammon38 miles
- Victor40 miles
County guides that cover Grays Lake
- Bonneville Countyseat: Idaho Falls
- Caribou Countyseat: Soda Springs
Piscifun tackle lined up for a day on Grays Lake
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Benchland and bank around Grays Lake, seen through a lens
Photo: Zechariah Judy, CC BY 3.0
Photo: Doug Kerr, CC BY-SA 2.0
Photo: BLMIdaho, CC BY 2.0
Photo: Intermountain Forest Service, USDA Region 4 Photography, Public domain
Loose ends to tie up before Grays Lake
Which county lines cross Grays Lake?
Head for Bonneville and Caribou counties, about 30 miles from Soda Springs.
How many acres is Grays Lake?
Roughly 23,138 acres.
Where do I launch a trailered boat at Grays Lake?
No listed ramp; carry in a small craft or tow to a nearby site.
Which game fish does IDFG recommend at Grays Lake?
Our sources carry no fish list for it.
Is there a size limit on fish kept at Grays Lake?
Under the IDFG Southeast Region block: Trout limit is 6, all species combined; In rivers and streams, only 2 of the 6 trout may be Cutthroat Trout; Brook Trout are listed separately.
Where do I buy a license before Grays Lake?
Fishing here takes an Idaho fishing license; Idaho Code 36-416 sets the annual statutory fee at $28.75 for residents and $106.25 for nonresidents, and steelhead or salmon fishing takes its own permit.
How often is Grays Lake stocked?
No hatchery rows name it.
Which tackle counter on our Idaho list serves Grays Lake?
Closest on our list: The Dam Store, about 22 miles away.
Gas up and head for Grays Lake
Buy the Idaho license before the drive.