Olnhauser Lake Fish Stocking
Montana · 1944–1968 on record
According to Montana fish & wildlife agency, Olnhauser Lake was last stocked August 1, 1968 with Largemouth Bass. Olnhauser Lake has 4 stocking records on file, spanning 1944–1968, with about 1,360 fish stocked over that period.
Nearby stocked waters
Other stocked waters near Olnhauser Lake, freshest activity first.
Deadmans Basin Reservoir
16 mi6 species · 547 records
Last stocked May 2026
Berg Reservoir
18 mi1 species · 6 records
Last stocked June 2013
Shifley Pond
18 mi1 species · 5 records
Last stocked August 1993
Lower Glaston Lake
16 mi9 species · 54 records
Last stocked August 1991
Cayuse Creek
16 mi3 species · 103 records
Last stocked July 1982
Upper Glaston Lake
15 mi9 species · 14 records
Last stocked June 1965
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| August 1, 1968 | Largemouth Bass | 600 | 2" | Montana fish & wildlife agency |
| April 2, 1960 | Rainbow Trout | 460 | 5" | Montana fish & wildlife agency |
| October 9, 1944 | Largemouth Bass | 100 | 3" | Montana fish & wildlife agency |
| September 25, 1944 | Crappie | 200 | 1" | Montana fish & wildlife agency |
Frequently asked
When was Olnhauser Lake last stocked?
According to Montana fish & wildlife agency, Olnhauser Lake was last stocked August 1, 1968 with Largemouth Bass.
What fish species are stocked in Olnhauser Lake?
Olnhauser Lake is stocked with Largemouth Bass, Rainbow Trout, and Crappie.
How often is Olnhauser Lake stocked?
Olnhauser Lake is stocked intermittently — 4 recorded stockings between 1944 and 1968.
How many fish have been stocked in Olnhauser Lake?
About 1,360 fish have been stocked in Olnhauser Lake across 4 recorded events since 1944, per Montana fish & wildlife agency.
What size are the fish stocked in Olnhauser Lake?
Fish stocked in Olnhauser Lake average about 2.8 inches, based on the sizes the agency reported.