Malheur Reservoir - Ironside, OR

Lake Information

Fish Species: Rainbow Trout
Malheur Reservoir, located near Ironside in rural Eastern Oregon, is a vital irrigation impoundment providing significant coldwater and coolwater fishing opportunities within a remote, high-desert landscape. Meticulously managed by the Oregon Department of Fish and Wildlife (ODFW), it sustains a productive fishery, predominantly focused on rainbow trout.

The primary piscatorial objective is its robust rainbow trout population, rigorously stocked in spring and fall, ensuring consistent angler engagement. Supplementary populations of yellow perch and brown bullhead catfish also offer diversified opportunities. Angling techniques are varied: trout respond to static baits (PowerBait, worms), dynamic spin-casting with spinners or spoons, or effective boat trolling. Fly anglers find success with nymphs or small streamers. Optimal trout fishing occurs in spring and fall; perch are active year-round, including ice fishing. Access is generally good via a developed boat ramp and bank access, though water levels fluctuate. Anglers are unequivocally mandated to consult the latest ODFW regulations, ensuring absolute adherence to species-specific bag limits and gear restrictions for this secluded, productive Eastern Oregon fishery.




Latest Fish Plants

Plant DateSpeciesSourceTotal Pounds
5-06-2025Rainbow TroutODFW 
4-22-2019Rainbow TroutODFW 
4-30-2018Rainbow TroutODFW 


Latest Fish Reports

Date Report Author
4-8-2026 Conditions should be ideal
Sampling last fall showed there are some very... more »
OR Department of Fish & Wildlife Staff
11-25-2025 Sampling last month showed there are some very nice trout in Malheur Reservoir
Sampling last month showed there are some very... more »
OR Department of Fish & Wildlife Staff
11-5-2025 Sampling last month showed there are some very nice trout in Malheur Reservoir
Sampling last month showed there are some very... more »
OR Department of Fish & Wildlife Staff
10-15-2025 The reservoir still has plenty of water and boat ramp is usable
Sampling last week turned showed there are some... more »
OR Department of Fish & Wildlife Staff
8-6-2025 Some nice fish are still being caught
There are some very nice trout in Malheur... more »
OR Department of Fish & Wildlife Staff

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