Tiber Reservoir fishing

Tiber Reservoir fishing is stocked with Walleye and Rainbow Trout on a reservoir. Also recorded: Northern Pike, Yellow Perch, Lake Trout, Cisco, Burbot, Shovelnose Sturgeon, and 1 more. It is stocked about 0.9 times a year since 2011, most often in July and September. Species guides list dawn, dusk, and night for Walleye, dawn and dusk for Rainbow Trout, and dawn, day, and dusk for Northern Pike and Yellow Perch.

AI-generated illustration, not a photo of this lake
Last stocked
May 19, 2025
· Rainbow Trout
Plants on record
14
Since 2011
Species stocked
2 (+7 also recorded)
Average size
3.4 in
Elevation
2,989.2 ft

Fish at Tiber Reservoir

2 stocked · 7 confirmed present

Around the dates Tiber Reservoir is stocked, Open-Meteo's 2016-2025 archive puts mean air temperature at 60.2°F in September, 72.9°F in July, 44.6°F in October, 55.1°F in May. That is air temperature at these coordinates, not water temperature. Open-Meteo

Rainbow Trout Stocked · 12 plants · last May 19, 2025 Best: dawn, dusk

Last stocked May 19, 2025 · avg 3.7 in · 12 plants

Best: dawn, dusk

Rainbow Trout species guide
Walleye Stocked · 2 plants · last July 2, 2019 Best: dawn, dusk, night

Last stocked July 2, 2019 · avg 1.7 in · 2 plants

Best: dawn, dusk, night

Walleye species guide

Tiber Reservoir, also known as Lake Elwell, is managed by the Bureau of Reclamation. This reservoir, which has 181 miles of shoreline, offers good fishing opportunities for visitors. Anglers can expect to find species including northern pike, walleye, and rainbow trout. Concrete boat ramps and campgrounds are also provided at this location. (usbr.gov, accessed October 5, 2026)

Drafted by AI from the cited sources and checked before publishing.

How Tiber Reservoir is stocked

Source: Montana Fish, Wildlife & Parks.

No plants recorded in 2012, 2013, 2014, 2018, 2023, and 2024.

Fish stocked in 2011

24,578

Fish stocked in 2015

153,821

Fish stocked in 2016

50,000

Fish stocked in 2017

48,277

Fish stocked in 2019

93,978

Fish stocked in 2020

44,317

Fish stocked in 2021

35,145

Fish stocked in 2022

89,571

Fish stocked in 2025

67,215

Stocking history

Source: Montana Fish, Wildlife & Parks.
Date Species Quantity Avg. length Source
May 19, 2025Rainbow Trout67,2151.8 inreport
September 14, 2022Rainbow Trout49,9103.86 inreport
September 14, 2022Rainbow Trout39,6613.77 inreport
August 19, 2021Rainbow Trout35,1453.29 inreport
October 1, 2020Rainbow Trout23,2404.56 inreport
October 1, 2020Rainbow Trout21,0774.36 inreport
September 25, 2019Rainbow Trout43,7034.39 inreport
July 2, 2019Walleye50,2751.69 inreport
September 12, 2017Rainbow Trout48,2774.29 inreport
September 20, 2016Rainbow Trout50,0004.1 inreport
November 5, 2015Rainbow Trout49,8004.49 inreport
July 28, 2015Rainbow Trout33,4782.67 inreport
July 28, 2015Rainbow Trout70,5432.69 inreport
July 12, 2011Walleye24,5781.8 inreport

Access and facts

Water type
reservoir
Nearest town
Chester
Boat ramp
Yes
Facilities
camping, dock, restrooms

Also called Lake Elwell, a Bureau of Reclamation reservoir on the Marias River about 18 miles southwest of Chester, with 181 miles of shoreline. Six access points with pit toilets and concrete ramps. From Fort Benton, take Hwy 223 north 39 miles, then Sec. 366 west 7.6 miles.

Drafted by AI from the cited sources and checked before publishing.

View larger map · Open in Google Maps · Directions

Advisories, closures, regulations and water conditions change. Check the Montana Fish, Wildlife & Parks before you go.

Nearest lakes

Henry Reservoir 29.3 mi last stocked June 9, 2026 Leningtons Reservoir 34.4 mi last stocked June 22, 2026 Cameron Lake 34.6 mi last stocked June 9, 2026 Parsell Pond 38.6 mi last stocked June 9, 2026 Marias River 38.8 mi last stocked September 14, 2023

Common questions

What fish are at Tiber Reservoir?

Fishing Tiber Reservoir usually means Rainbow Trout: Rainbow Trout accounts for 12 of 14 plants on record, ahead of Walleye. Rainbow Trout was last stocked May 19, 2025, averaging 3.7 in. Walleye was last stocked July 2, 2019, averaging 1.7 in. Northern Pike, Yellow Perch, Lake Trout, and Cisco, plus 3 more are recorded here outside the stocking reports.

When is Tiber Reservoir stocked?

Last stocked May 19, 2025. It is stocked about 0.9 times a year since 2011, most often in July and September. No plants recorded in 2012, 2013, 2014, 2018, 2023, and 2024.

How big are the fish stocked at Tiber Reservoir?

Stocked fish average 3.4 in. Rainbow Trout average 3.7 in. Walleye average 1.7 in.

How do you get on Tiber Reservoir?

There is a boat ramp. The nearest town is Chester. Facilities include camping, dock, and restrooms. Also called Lake Elwell, a Bureau of Reclamation reservoir on the Marias River about 18 miles southwest of Chester, with 181 miles of shoreline. Six access points with pit toilets and concrete ramps. From Fort Benton, take Hwy 223 north 39 miles, then Sec. 366 west 7.6 miles.

Which lakes near Tiber Reservoir were stocked more recently?

Henry Reservoir (29.3 mi), Leningtons Reservoir (34.4 mi), Cameron Lake (34.6 mi), and Parsell Pond (38.6 mi) were stocked more recently. Henry Reservoir is also stocked with Rainbow Trout, Leningtons Reservoir is also stocked with Rainbow Trout, Cameron Lake is also stocked with Rainbow Trout, and Parsell Pond is also stocked with Rainbow Trout.

Sources (7) +