Top fish species at Grassy Lake Reservoir

App Section

Check which species have trophy potential in Grassy Lake Reservoir

Grassy Lake Reservoir fishing reports

fish catches icon
recently logged catches
Loading...

Lake char

length · weight

fish catches icon
recently logged catches
Loading...

Cutthroat trout

length · weight

fish catches icon
recently logged catches
Loading...

Cutthroat trout

length · weight

fish catches icon
recently logged catches
Loading...

Lake char

length · weight

fish catches icon
recently logged catches
Loading...

Lake char

length · weight

fish catches icon
recently logged catches
Loading...

Lake char

length · weight

Fishbrain
More catches in the app...

Continue browsing catches and catch locations in the Fishbrain app

Loading...
Loading...
Loading...

General info

Grassy Lake Reservoir is a lake located in Teton County, Wyoming, United States. It is most popular for fishing Lake char, Cutthroat trout, and Rainbow trout.

Location

44°07′38.2″N 110°48′22.1″W
Directions

Fishing regulations at Grassy Lake Reservoir, WY

Disclaimer: Always check local fishing regulations, water access rights and land ownership before fishing, regardless of any catches logged in that area by the Fishbrain community. Fishbrain has mapped millions of acres of government-owned land across the USA to help you identify potential fishing access, but you are responsible for ensuring compliance with all legal requirements.

Fishing regulations in Wyoming can change throughout the year. Make sure to check this page before fishing for the most up to date rules and regulations for the current season. Local regulations govern when you can fish, the max size of the fish you can keep, how many fish you can keep, and more.

Below you will see fishing regulations for catching Lake char as of May 2nd, 2026. To view regulations for a different fish species, please click on your preferred species in the drop-down.

Lake char

Seasons

Open

Bag limit

6

Memorable

1 > 24

Measurement

Total Length

Aggregate

6

Bag limit Six (6). No more than one (1) lake trout or splake shall exceed twenty-four (24) inches.


For more information please see Wyoming fishing regulations

Very good

Salvelinus namaycush

Regulations for

44°07′38.2″N 110°48′22.1″W
Regulations in the map
License Icon
Local laws and licenses

Wyoming fishing license

Get license

Cities nearby

Warm River

25.5 miles away

Alta

26.9 miles away

Tetonia

27.8 miles away

Drummond

28.1 miles away

Ashton

32.1 miles away

Kelly

36.0 miles away

Teton Village

37.1 miles away

Island Park

38.9 miles away

Victor

39.4 miles away

West Yellowstone

39.8 miles away

Moose Wilson Road

41.2 miles away

Wilson

44.5 miles away

Jackson

45.3 miles away

Teton

46.1 miles away

Hebgen Lake Estates

48.2 miles away

South Park

48.6 miles away

Parker

48.7 miles away

Rexburg

53.3 miles away

Swan Valley

53.9 miles away

Irwin

55.6 miles away

Ririe

59.0 miles away

Rigby

63.4 miles away

Roberts

71.5 miles away

Ammon

73.0 miles away

Anything missing or inaccurate?

Suggest changes to improve what we show.

Suggest changes

FAQ about Grassy Lake Reservoir fishing

Grassy Lake Reservoir is a lake located in Teton County, Wyoming, United States. Its coordinates are:
44°07′38.2″N 110°48′22.1″W
.
Find the best fishing spots on Grassy Lake Reservoir by looking at where other anglers have caught fish. This can easily be done in the where it is also possible to see big fish potential and how good fishing is right now along with Garmin® depth maps.
The most common species in Grassy Lake Reservoir are:
The latest Grassy Lake Reservoir fishing reports are:
App Section
Download Fishbrain and fish smarter
Unlimited access to the best fishing spot finder in the game. Get all the fishing intel you need to start catching more, and bigger, fish.

Free trial available

Loading...
Loading...
Loading...
Loading...