Marias River fishing

Fishing at Marias River is on a river section, stocked with Rainbow Trout and Brown Trout. It is stocked about 1.7 times a year since 2011, most often in July and September. Species guides list dawn and dusk for Rainbow Trout and dawn, day, and dusk for Brown Trout.

Last stocked

September 14, 2023

Plants on record

Since 2011

Species recorded

Average size

6.5 in

Elevation

2,591.7 ft

Access and facts

Water type: river section
Shore access: Yes

A 210-mile tributary of the Missouri, flowing from Glacier County east through Lake Elwell (Tiber Reservoir) before joining the Missouri near Loma. Classed as a Montana Class I stream from Tiber Dam to its mouth, open for public recreational access.

Sources: water_type , access , shore_notes

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How Marias River is stocked

The first plant of the year usually falls in the third week of July. In 2023 it was September 14, 2023, later than usual.

No plants recorded in 8 years between 2011 and 2023.

Leningtons Reservoir (5.2 mi), Eightmile Springs (15.6 mi), Crow Coulee Reservoir (16.6 mi), and Silvan Pond (28.4 mi) were stocked more recently. Leningtons Reservoir is also stocked with Rainbow Trout, Eightmile Springs is also stocked with Rainbow Trout, and Crow Coulee Reservoir is also stocked with Rainbow Trout.

Fish at Marias River

Fishing Marias River is most likely to be for Rainbow Trout. Rainbow Trout accounts for 14 of 22 plants on record, ahead of Brown Trout.

Around the dates Marias River is stocked, Open-Meteo's 2016-2025 archive puts mean air temperature at 62.1°F in September, 75.2°F in July, 66°F in June, 72.3°F in August. That is air temperature at these coordinates, not water temperature. Open-Meteo

Rainbow Trout 14 plants

Plants: 14 of 22
Last stocked: July 17, 2014
Average length: 6.5 in

Seasons and rigs are on the Rainbow Trout guide.

Brown Trout 8 plants

Plants: 8 of 22
Last stocked: September 14, 2023
Average length: 6.5 in

Seasons and rigs are on the Brown Trout guide.

Fish stocked per year

39,7402011
39,7502012
20,3242013
10,0542014
22,5602023

Stocking history

Showing 15 of 22 plants Showing 22 plants

All species Rainbow Trout Brown Trout

Source: Montana Fish, Wildlife & Parks.
Date	Species	Quantity	Avg. length	Source
September 14, 2023	Brown Trout	5,640	6.6 in	report
September 14, 2023	Brown Trout	5,640	6.6 in	report
September 14, 2023	Brown Trout	5,640	6.6 in	report
September 14, 2023	Brown Trout	5,640	6.6 in	report
July 17, 2014	Rainbow Trout	5,986	9.13 in	report
July 17, 2014	Rainbow Trout	4,068	7.95 in	report
September 16, 2013	Rainbow Trout	5,183	6.19 in	report
September 16, 2013	Rainbow Trout	5,183	6.19 in	report
July 12, 2013	Rainbow Trout	4,979	7.87 in	report
July 12, 2013	Rainbow Trout	4,979	7.87 in	report
September 18, 2012	Brown Trout	4,527	6.9 in	report
September 18, 2012	Rainbow Trout	9,955	3.92 in	report
September 18, 2012	Rainbow Trout	117	6.7 in	report
September 18, 2012	Brown Trout	4,527	6.9 in	report
September 18, 2012	Rainbow Trout	9,955	3.92 in	report
September 18, 2012	Rainbow Trout	117	6.7 in	report
August 16, 2012	Brown Trout	5,276	5.72 in	report
August 16, 2012	Brown Trout	5,276	5.72 in	report
October 3, 2011	Rainbow Trout	9,882	4.13 in	report
October 3, 2011	Rainbow Trout	9,882	4.13 in	report
June 22, 2011	Rainbow Trout	9,988	7.83 in	report
June 22, 2011	Rainbow Trout	9,988	7.83 in	report

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Species stocked here

Depth-by-season, top lures, and bait notes for each species stocked here are on its own species guide, linked above.