Grayrocks Reservoir fishing

Fishing at Grayrocks Reservoir is on a reservoir, stocked with Channel Catfish, Tiger Muskie, Rainbow Trout, Walleye, and Crappie. It is stocked about 1.7 times a year since 1991, most often in June and July. Species guides list dusk and night for Channel Catfish, dawn and dusk for Rainbow Trout, and dawn, dusk, and night for Walleye and Crappie.

Last stocked

June 1, 2026

Plants on record

60

Since 1991

Species recorded

5

Average size

3.4 in

Elevation

4,407 ft

Access and facts

Water type
reservoir
Nearest town
Wheatland, WY
Shore access
Yes
Boat ramp
Yes
ADA accessible
Yes
Facilities
restrooms, camping, dock

Twelve parking areas ring the 3,500-acre reservoir for bank fishing, plus three boat ramps (two with handicap-accessible docks) and accessible comfort stations. Camping capped at 5 days; access road and parking aren't plowed in winter.

Sources: water_type , access.shore , access.boat_ramp , access.ada , shore_notes , nearest_town , facilities

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How Grayrocks Reservoir is stocked

The first plant of the year usually falls in the first week of June. In 2026 it was June 1, 2026, about when it usually is.

No plants recorded in 2013.

Fish at Grayrocks Reservoir

Fishing Grayrocks Reservoir is most likely to be for Walleye. Walleye accounts for 31 of 60 plants on record, ahead of Channel Catfish and 3 more.

Walleye 31 plants
Plants
31 of 60
Last stocked
June 1, 2026
Average length
1.3 in

Seasons and rigs are on the Walleye guide.

Channel Catfish 22 plants
Plants
22 of 60
Last stocked
May 1, 2025
Average length
6 in

Seasons and rigs are on the Channel Catfish guide.

Crappie 4 plants
Plants
4 of 60
Last stocked
August 1, 2025
Average length
2 in

Seasons and rigs are on the Crappie guide.

Tiger Muskie 2 plants
Plants
2 of 60
Last stocked
October 1, 2012
Average length
7.5 in

Seasons and rigs are on the Tiger Muskie guide.

Rainbow Trout 1 plant
Plants
1 of 60
Last stocked
April 1, 1994
Average length
8.5 in

Seasons and rigs are on the Rainbow Trout guide.

Fish stocked per year

  • 26,8551991
  • 13,8091992
  • 13,0461993
  • 20,1001994
  • 66,9651995
  • 159,1801996
  • 411,7001997
  • 512,4161998
  • 208,1611999
  • 406,6622000
  • 412,5922001
  • 408,8002002
  • 448,6002003
  • 281,9002004
  • 214,7222005
  • 206,8562006
  • 234,0022007
  • 208,0382008
  • 555,5002009
  • 400,9002010
  • 269,9082011
  • 435,7702012
  • 354,3002014
  • 279,8002015
  • 439,7912016
  • 399,9982017
  • 408,6092018
  • 414,0002019
  • 374,9002020
  • 407,9222021
  • 370,4902022
  • 297,6502023
  • 460,2842024
  • 285,4112025
  • 206,8502026

Stocking history

Showing 15 of 60 plants Showing 60 plants

Source: Wyoming Game and Fish Department.
Date Species Quantity Avg. length Source
June 1, 2026 Walleye 206,850 1.2 in report
August 1, 2025 Crappie 54,100 1.9 in report
June 1, 2025 Walleye 227,471 1.3 in report
May 1, 2025 Channel Catfish 3,840 4.9 in report
October 1, 2024 Crappie 57,420 2.3 in report
June 1, 2024 Walleye 400,164 1.4 in report
April 1, 2024 Channel Catfish 2,700 7 in report
June 1, 2023 Walleye 297,650 1.5 in report
October 1, 2022 Crappie 44,590 2.1 in report
June 1, 2022 Walleye 325,900 1.5 in report
June 1, 2021 Walleye 407,922 1.4 in report
June 1, 2020 Walleye 374,900 1.4 in report
November 1, 2019 Crappie 13,500 1.7 in report
June 1, 2019 Walleye 400,500 1.3 in report
June 1, 2018 Walleye 408,609 1.4 in report
June 1, 2017 Walleye 399,998 1.4 in report
June 1, 2016 Walleye 433,293 1.3 in report
May 1, 2016 Channel Catfish 6,498 5 in report
June 1, 2015 Walleye 279,800 1.5 in report
July 1, 2014 Walleye 347,799 1.3 in report
May 1, 2014 Channel Catfish 6,501 4.7 in report
October 1, 2012 Tiger Muskie 4,779 7.5 in report
June 1, 2012 Walleye 424,492 1.4 in report
April 1, 2012 Channel Catfish 6,499 4.8 in report
July 1, 2011 Walleye 263,408 1.2 in report
April 1, 2011 Channel Catfish 6,500 5.6 in report
June 1, 2010 Walleye 400,900 1.2 in report
July 1, 2009 Walleye 555,500 1.3 in report
October 1, 2008 Channel Catfish 6,514 5 in report
July 1, 2008 Walleye 201,524 1.3 in report
October 1, 2007 Channel Catfish 2,002 5.4 in report
July 1, 2007 Walleye 232,000 1.1 in report
June 1, 2006 Walleye 206,856 1.4 in report
October 1, 2005 Channel Catfish 2,722 5.7 in report
July 1, 2005 Walleye 212,000 1.3 in report
October 1, 2004 Channel Catfish 6,500 5.2 in report
July 1, 2004 Walleye 275,400 1.1 in report
October 1, 2003 Channel Catfish 7,000 4 in report
July 1, 2003 Walleye 441,600 1.3 in report
July 1, 2002 Walleye 408,800 1.4 in report
July 1, 2001 Channel Catfish 6,500 5.2 in report
June 1, 2001 Walleye 406,092 1.1 in report
October 1, 2000 Channel Catfish 6,506 4.2 in report
June 1, 2000 Walleye 400,156 1.3 in report
June 1, 1999 Walleye 200,655 1.3 in report
May 1, 1999 Channel Catfish 7,506 7.3 in report
June 1, 1998 Walleye 499,416 1.2 in report
May 1, 1998 Channel Catfish 13,000 6.8 in report
July 1, 1997 Walleye 395,200 1.3 in report
May 1, 1997 Channel Catfish 16,500 6.8 in report
June 1, 1996 Walleye 150,180 1.2 in report
May 1, 1996 Channel Catfish 9,000 5.6 in report
June 1, 1995 Walleye 53,965 1.8 in report
May 1, 1995 Channel Catfish 13,000 6.1 in report
April 1, 1994 Rainbow Trout 5,000 8.5 in report
April 1, 1994 Channel Catfish 15,100 7 in report
June 1, 1993 Channel Catfish 13,046 7.9 in report
June 1, 1992 Channel Catfish 13,809 8.8 in report
August 1, 1991 Tiger Muskie 15,986 7.5 in report
June 1, 1991 Channel Catfish 10,869 9.4 in report
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Species stocked here

Depth-by-season, top lures, and bait notes for each species stocked here are on its own species guide, linked above.

Nearest lakes