Groh Reservoir Fish Stocking
Montana · 1960–1961 on record
According to Montana fish & wildlife agency, Groh Reservoir was last stocked September 20, 1961 with Bluegill. Groh Reservoir has 3 stocking records on file, spanning 1960–1961, with about 4,300 fish stocked over that period.
Angler's Field Guide
Fishing Tips & Stocking Guide for Groh Reservoir
Practical advice on fish behavior, recommended tackle, and state regulations for anglers fishing in Montana.
Post-Plant Behavior & Timing
Hatchery-raised fish are conditioned to pelleted feed and open raceways. Following a release into Groh Reservoir, they typically congregate in schools near public access points, boat ramps, or inlets for the first 24 to 48 hours while adjusting to natural water conditions.
Since Groh Reservoir was last stocked September 20, 1961, anglers visiting within 1 to 2 weeks of a reported event generally experience the highest activity before fish disperse into deeper cover.
State Regulations & Licensing
- •Fishing License: A valid Montana freshwater fishing license is required for anglers age 16 and older.Purchase Montana license online →
- •Official Rules & Limits: Bag limits, bait restrictions, and seasonal boundaries are set by Montana fish & wildlife agency.Official Montana regulations guidebook →
- •Ethical Conservation: Use barbless hooks and keep fish submerged in water during unhooking.
Recommended Tackle & Presentations
Techniques tailored to the species stocked in Groh Reservoir:
Bass & Panfish Approach
Target visible structure such as docks, weed lines, and fallen trees. Small 1/32 to 1/16 oz jig heads with soft plastic grubs or live worms under a float work well for crappie and bluegill; soft plastic worms or spinnerbaits work well for bass.
Bluegill Profile Tips
A staple of family and youth fishing programs; readily takes worms, small jigs, and flies.
Largemouth Bass Profile Tips
The centerpiece of American bass fishing culture, taken on everything from topwater lures to soft plastics and live bait.
Recommended Tackle for Groh Reservoir
Field-tested tackle and presentations matched to the species stocked here.
Gary Yamamoto 5-inch Custom Senko Stickbaits
The heavy salt-impregnated plastic produces a unique horizontal shimmy on the fall around weed beds, docks, and submerged timber.
Bobby Garland Baby Shad Crappie Jig & Plastic Kit
Micro-jig heads paired with soft swimbaits mimic tiny baitfish and insects for schooling crappie and bluegill.
Aluminum Fishing Pliers with Braid Cutters
Safely removes hooks, pinches split-shot sinkers, and cleanly snips braided, mono, and fluorocarbon lines.
Plano Waterproof Utility Tackle Box Tray (3600)
Keeps terminal tackle, weights, and spinners dry and corrosion-free with customizable compartments.
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Nearby stocked waters
Other stocked waters near Groh Reservoir, freshest activity first.
Dreyer Reservoir
11 mi2 species · 16 records
Last stocked May 1992
Quick Reservoir
14 mi5 species · 11 records
Last stocked May 1982
Pawlowski Dam
4 mi4 species · 12 records
Last stocked July 1971
Wendell Dam
5 mi1 species · 2 records
Last stocked July 1960
Mamle Reservoir
5 mi2 species · 2 records
Last stocked October 1957
Eissinger Dam
7 mi2 species · 2 records
Last stocked September 1955
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| September 20, 1961 | Bluegill | 3,000 | 1" | Montana fish & wildlife agency |
| July 29, 1960 | Largemouth Bass | 700 | 2" | Montana fish & wildlife agency |
| July 29, 1960 | Largemouth Bass | 600 | 2" | Montana fish & wildlife agency |
Frequently asked
When was Groh Reservoir last stocked?
According to Montana fish & wildlife agency, Groh Reservoir was last stocked September 20, 1961 with Bluegill.
What fish species are stocked in Groh Reservoir?
Groh Reservoir is stocked with Bluegill and Largemouth Bass.
How often is Groh Reservoir stocked?
Groh Reservoir has been stocked about 2 times a year — 3 recorded stockings between 1960 and 1961.
How many fish have been stocked in Groh Reservoir?
About 4,300 fish have been stocked in Groh Reservoir across 3 recorded events since 1960, per Montana fish & wildlife agency.
What size are the fish stocked in Groh Reservoir?
Fish stocked in Groh Reservoir average about 1.7 inches, based on the sizes the agency reported.
Do you need a fishing license to fish Groh Reservoir?
Yes, all anglers age 16 and older generally need a valid Montana freshwater fishing license. Always review current regulations from Montana fish & wildlife agency for site-specific rules, bag limits, or stamps.