Montana stocking report
Olson Reservoir
Last reported stocking
The latest reported stocking at Olson Reservoir was on June 24, 1970: 1,050 Rainbow Trout (5 in avg).
Record last checked: . This is not a stocking date.
Source: Montana Fish, Wildlife & Parks.
A schedule is a plan, not confirmation that fish were released. Stocking records do not guarantee fish are still available.
No current or upcoming schedule is in this archive. Check the official report before choosing a trip date.
Location map
Olson Reservoir location context
Pins appear only when the record includes coordinates; they are not verified access points. Shaded counties show area context only. Waters without coordinates stay in the list without a pin; confirm access and directions with the official agency source.
Check the exact water: This page groups records with the same name across 2 counties. They may describe different waters or reaches; the map does not identify all of them.
Before you go
Plan a trip to Olson Reservoir
Check the latest report
Confirm dates and any changes in the official stocking report. Historical schedules are kept below even after their planned dates pass.
Check access and fishing rules
Use Montana's official fishing information to find current guidance. Confirm the exact water, public access, closures, and applicable fishing rules before leaving.
Choose the right location
The map gives location context. A shaded county is area context, not directions to a fishing spot or evidence of public access.
Get stocking alerts for this waterAgency records
Stocking history
6 records from September 14, 1966 to June 24, 1970. Open a year to browse its records; scroll tables sideways for all columns. Scheduled means planned, even when the date has passed. Blank fields mean the source did not publish that detail.
1970 2 records
| Date / status | Species | Fish | Size | Hatchery | Source |
|---|---|---|---|---|---|
| June 24, 1970 reported | Rainbow Trout | 1,050 | 5 in avg | Big Springs Trout Hatchery | Montana Fish, Wildlife & Parks |
| May 27, 1970 reported | Rainbow Trout | 3,750 | 3 in avg | Giant Springs Trout Hatchery | Montana Fish, Wildlife & Parks |
1969 2 records
| Date / status | Species | Fish | Size | Hatchery | Source |
|---|---|---|---|---|---|
| June 10, 1969 reported | Rainbow Trout | 2,100 | 4 in avg | Big Springs Trout Hatchery | Montana Fish, Wildlife & Parks |
| May 27, 1969 reported | Rainbow Trout | 3,640 | 3 in avg | Giant Springs Trout Hatchery | Montana Fish, Wildlife & Parks |
1968 1 record
| Date / status | Species | Fish | Size | Hatchery | Source |
|---|---|---|---|---|---|
| April 22, 1968 reported | Rainbow Trout | 3,599 | 3 in avg | Giant Springs Trout Hatchery | Montana Fish, Wildlife & Parks |
1966 1 record
| Date / status | Species | Fish | Size | Hatchery | Source |
|---|---|---|---|---|---|
| September 14, 1966 reported | Rainbow Trout | 5,365 | 7 in avg | Giant Springs Trout Hatchery | Montana Fish, Wildlife & Parks |
Records retain the dates, quantities, and status supplied by the linked agencies. An event missing here does not mean the water was not stocked - some plants go unreported or are published elsewhere.
Grouped by county and sorted by latest record, not by driving distance. Confirm access for each water.
Data source: Montana Fish, Wildlife & Parks. A record for this water was last checked on . This check date is not a stocking date.
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