Rock Island Lake, Lower Fish Stocking
Montana · 1938–1990 on record
According to Montana fish & wildlife agency, Rock Island Lake, Lower was last stocked August 15, 1990 with Cutthroat Trout. Rock Island Lake, Lower has 4 stocking records on file, spanning 1938–1990, with about 53,640 fish stocked over that period.
Nearby stocked waters
Other stocked waters near Rock Island Lake, Lower, freshest activity first.
Van Houten Lake
11 mi4 species · 22 records
Last stocked May 2025
Hurley Lake
4 mi2 species · 3 records
Last stocked September 2024
Little Lake
1 mi2 species · 13 records
Last stocked September 2024
Ridge Lake
1 mi1 species · 16 records
Last stocked September 2024
Slag-a-melt Lakes
5 mi1 species · 14 records
Last stocked September 2024
Lower Miner Lakes
5 mi3 species · 28 records
Last stocked September 2024
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| August 15, 1990 | Cutthroat Trout | 400 | 1.7" | Montana fish & wildlife agency |
| September 19, 1960 | Rainbow Trout | 5,000 | 1" | Montana fish & wildlife agency |
| September 4, 1941 | Rainbow Trout | 30,240 | 0 | Montana fish & wildlife agency |
| August 30, 1938 | Rainbow Trout | 18,000 | 0 | Montana fish & wildlife agency |
Frequently asked
When was Rock Island Lake, Lower last stocked?
According to Montana fish & wildlife agency, Rock Island Lake, Lower was last stocked August 15, 1990 with Cutthroat Trout.
What fish species are stocked in Rock Island Lake, Lower?
Rock Island Lake, Lower is stocked with Cutthroat Trout and Rainbow Trout.
How often is Rock Island Lake, Lower stocked?
Rock Island Lake, Lower is stocked intermittently — 4 recorded stockings between 1938 and 1990.
How many fish have been stocked in Rock Island Lake, Lower?
About 53,640 fish have been stocked in Rock Island Lake, Lower across 4 recorded events since 1938, per Montana fish & wildlife agency.
What size are the fish stocked in Rock Island Lake, Lower?
Fish stocked in Rock Island Lake, Lower average about 1.4 inches, based on the sizes the agency reported.