Nielsen Dam Fish Stocking
Montana · 1945–1998 on record
According to Montana fish & wildlife agency, Nielsen Dam was last stocked April 28, 1998 with Rainbow Trout. Nielsen Dam has 5 stocking records on file, spanning 1945–1998, with about 5,157 fish stocked over that period.
Nearby stocked waters
Other stocked waters near Nielsen Dam, freshest activity first.
Flat Lake
17 mi5 species · 79 records
Last stocked June 2025
Milk River
16 mi13 species · 325 records
Last stocked May 2014
Frazer Lake
10 mi4 species · 5 records
Last stocked June 1996
Greenwood Reservoir
15 mi1 species · 19 records
Last stocked April 1987
Nickels Dam
10 mi2 species · 3 records
Last stocked September 1978
Gribble Reservoir
7 mi2 species · 2 records
Last stocked September 1970
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| April 28, 1998 | Rainbow Trout | 1,502 | 3.9" | Montana fish & wildlife agency |
| October 10, 1955 | Largemouth Bass | 375 | 5" | Montana fish & wildlife agency |
| October 10, 1955 | Bluegill | 1,280 | 2" | Montana fish & wildlife agency |
| October 18, 1945 | Largemouth Bass | 1,000 | 3" | Montana fish & wildlife agency |
| October 18, 1945 | Bullhead | 1,000 | 2" | Montana fish & wildlife agency |
Frequently asked
When was Nielsen Dam last stocked?
According to Montana fish & wildlife agency, Nielsen Dam was last stocked April 28, 1998 with Rainbow Trout.
What fish species are stocked in Nielsen Dam?
Nielsen Dam is stocked with Rainbow Trout, Largemouth Bass, Bluegill, and Bullhead.
How often is Nielsen Dam stocked?
Nielsen Dam is stocked intermittently — 5 recorded stockings between 1945 and 1998.
How many fish have been stocked in Nielsen Dam?
About 5,157 fish have been stocked in Nielsen Dam across 5 recorded events since 1945, per Montana fish & wildlife agency.
What size are the fish stocked in Nielsen Dam?
Fish stocked in Nielsen Dam average about 3.2 inches, based on the sizes the agency reported.