Marias River Fish Stocking
Montana · 1940–2023 on record
According to Montana fish & wildlife agency, Marias River was last stocked September 14, 2023 with Brown Trout. Marias River has 247 stocking records on file, spanning 1940–2023, with about 3,632,424 fish stocked over that period.
When Marias River is stocked
Marias River is typically stocked in summer and fall, most often in July — 69 stocking events in that peak month.
Nearby stocked waters
Other stocked waters near Marias River, freshest activity first.
Leningtons Reservoir
10 mi5 species · 62 records
Last stocked October 2025
Schoonover Reservoir 2
5 mi4 species · 14 records
Last stocked August 2025
Crow Coulee Reservoir
11 mi4 species · 18 records
Last stocked June 2025
Diacon Pond
12 mi1 species · 6 records
Last stocked June 2021
Courtnage Reservoir #1
18 mi1 species · 27 records
Last stocked June 2003
Schoonover Reservoir 1
6 mi4 species · 7 records
Last stocked August 1994
By species
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| September 14, 2023 | Brown Trout | 5,640 | 6.6" | Montana fish & wildlife agency |
| September 14, 2023 | Brown Trout | 5,640 | 6.6" | Montana fish & wildlife agency |
| July 17, 2014 | Rainbow Trout | 5,986 | 9.13" | Montana fish & wildlife agency |
| July 17, 2014 | Rainbow Trout | 4,068 | 7.95" | Montana fish & wildlife agency |
| September 16, 2013 | Rainbow Trout | 5,183 | 6.19" | Montana fish & wildlife agency |
| September 16, 2013 | Rainbow Trout | 5,183 | 6.19" | Montana fish & wildlife agency |
| July 12, 2013 | Rainbow Trout | 4,979 | 7.87" | Montana fish & wildlife agency |
| July 12, 2013 | Rainbow Trout | 4,979 | 7.87" | Montana fish & wildlife agency |
Show 42 more stocking records →
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| September 18, 2012 | Rainbow Trout | 117 | 6.7" | Montana fish & wildlife agency |
| September 18, 2012 | Rainbow Trout | 117 | 6.7" | Montana fish & wildlife agency |
| September 18, 2012 | Rainbow Trout | 9,955 | 3.92" | Montana fish & wildlife agency |
| September 18, 2012 | Brown Trout | 4,527 | 6.9" | Montana fish & wildlife agency |
| September 18, 2012 | Brown Trout | 4,527 | 6.9" | Montana fish & wildlife agency |
| September 18, 2012 | Rainbow Trout | 9,955 | 3.92" | Montana fish & wildlife agency |
| August 16, 2012 | Brown Trout | 5,276 | 5.72" | Montana fish & wildlife agency |
| August 16, 2012 | Brown Trout | 5,276 | 5.72" | Montana fish & wildlife agency |
| October 3, 2011 | Rainbow Trout | 9,882 | 4.13" | Montana fish & wildlife agency |
| October 3, 2011 | Rainbow Trout | 9,882 | 4.13" | Montana fish & wildlife agency |
| June 22, 2011 | Rainbow Trout | 9,988 | 7.83" | Montana fish & wildlife agency |
| June 22, 2011 | Rainbow Trout | 9,988 | 7.83" | Montana fish & wildlife agency |
| September 15, 2010 | Rainbow Trout | 9,450 | 5.7" | Montana fish & wildlife agency |
| September 15, 2010 | Rainbow Trout | 9,450 | 5.7" | Montana fish & wildlife agency |
| September 13, 2010 | Brown Trout | 11,078 | 7.29" | Montana fish & wildlife agency |
| September 13, 2010 | Brown Trout | 11,078 | 7.29" | Montana fish & wildlife agency |
| September 8, 2010 | Brown Trout | 10,019 | 7.3" | Montana fish & wildlife agency |
| June 23, 2010 | Rainbow Trout | 1,013 | 8.22" | Montana fish & wildlife agency |
| June 23, 2010 | Rainbow Trout | 9,077 | 7.79" | Montana fish & wildlife agency |
| June 23, 2010 | Rainbow Trout | 1,013 | 8.22" | Montana fish & wildlife agency |
| June 23, 2010 | Rainbow Trout | 9,077 | 7.79" | Montana fish & wildlife agency |
| April 1, 2010 | Brown Trout | 1,938 | 9.21" | Montana fish & wildlife agency |
| April 1, 2010 | Brown Trout | 2,424 | 9.46" | Montana fish & wildlife agency |
| April 1, 2010 | Brown Trout | 1,938 | 9.21" | Montana fish & wildlife agency |
| April 1, 2010 | Brown Trout | 2,424 | 9.46" | Montana fish & wildlife agency |
| March 31, 2010 | Brown Trout | 2,535 | 9.28" | Montana fish & wildlife agency |
| March 31, 2010 | Brown Trout | 2,172 | 9.12" | Montana fish & wildlife agency |
| March 31, 2010 | Brown Trout | 2,535 | 9.28" | Montana fish & wildlife agency |
| March 31, 2010 | Brown Trout | 2,172 | 9.12" | Montana fish & wildlife agency |
| September 24, 2009 | Rainbow Trout | 10,041 | 4" | Montana fish & wildlife agency |
| September 24, 2009 | Rainbow Trout | 10,041 | 4" | Montana fish & wildlife agency |
| September 22, 2009 | Pallid Sturgeon | 10,769 | 5" | Montana fish & wildlife agency |
| September 22, 2009 | Pallid Sturgeon | 10,769 | 5" | Montana fish & wildlife agency |
| September 10, 2009 | Brown Trout | 9,398 | 7" | Montana fish & wildlife agency |
| September 10, 2009 | Brown Trout | 9,398 | 7" | Montana fish & wildlife agency |
| July 10, 2009 | Rainbow Trout | 6,261 | 8" | Montana fish & wildlife agency |
| July 10, 2009 | Rainbow Trout | 6,261 | 8" | Montana fish & wildlife agency |
| April 13, 2009 | Rainbow Trout | 11,183 | 8" | Montana fish & wildlife agency |
| April 13, 2009 | Rainbow Trout | 11,183 | 8" | Montana fish & wildlife agency |
| April 10, 2009 | Brown Trout | 4,845 | 9" | Montana fish & wildlife agency |
| April 10, 2009 | Brown Trout | 4,845 | 9" | Montana fish & wildlife agency |
| April 9, 2009 | Pallid Sturgeon | 1,203 | 9" | Montana fish & wildlife agency |
Showing 50 of 247 stocking records.
Frequently asked
When was Marias River last stocked?
According to Montana fish & wildlife agency, Marias River was last stocked September 14, 2023 with Brown Trout.
What fish species are stocked in Marias River?
Marias River is stocked with Brown Trout, Rainbow Trout, Pallid Sturgeon, Smallmouth Bass, Channel Catfish, Coho Salmon, Crappie, and Bullhead.
What time of year is Marias River stocked?
Marias River is typically stocked in summer and fall, most often in July.
How often is Marias River stocked?
Marias River has been stocked about 3 times a year — 247 recorded stockings between 1940 and 2023.
How many fish have been stocked in Marias River?
About 3,632,424 fish have been stocked in Marias River across 247 recorded events since 1940, per Montana fish & wildlife agency.
What size are the fish stocked in Marias River?
Fish stocked in Marias River average about 5.8 inches, based on the sizes the agency reported.