Mann Lake
Lake Information
| Surface Area: | 276 acres |
| Shoreline: | 2.5 miles |
| Maximum Depth: | 14 ft. |
| Elevation: | 4173 ft. |
| Fish Species: | Cutthroat Trout |
Mann Lake, located below Steens Mountain in southeastern Oregon, is a renowned and unique high desert fishery. This remote and often windswept lake is exclusively celebrated for its exceptional population of native Lahontan cutthroat trout. These supremely adapted trout are the sole game fish species here, offering a challenging yet highly rewarding pursuit for anglers seeking a truly wild trophy experience.
Fishing conditions are influenced by the high desert environment, with optimal success typically found in spring and fall when water temperatures are cooler. The lake is open year-round, but access can be challenging due to rough roads and frequent high winds. Fly fishing is the predominant and most effective method, demanding technical skill. Anglers successfully employ subsurface patterns like nymphs and streamers, mimicking the trout's natural forage.
Access to Mann Lake involves navigating unpaved, often rugged roads. Anglers typically fish from float tubes or pontoon boats to effectively cover the expansive water. Conservation is absolutely paramount for Mann Lake's Lahontan cutthroat trout, which are considered a sensitive species. Strict catch-and-release is often mandated, and adherence to all Oregon Department of Fish & Wildlife (ODFW) regulations is crucial to preserve this unique wild population. Mann Lake offers a singular angling adventure, inviting dedicated enthusiasts to connect with wild, native trout in a magnificent and untamed landscape.
Fishing conditions are influenced by the high desert environment, with optimal success typically found in spring and fall when water temperatures are cooler. The lake is open year-round, but access can be challenging due to rough roads and frequent high winds. Fly fishing is the predominant and most effective method, demanding technical skill. Anglers successfully employ subsurface patterns like nymphs and streamers, mimicking the trout's natural forage.
Access to Mann Lake involves navigating unpaved, often rugged roads. Anglers typically fish from float tubes or pontoon boats to effectively cover the expansive water. Conservation is absolutely paramount for Mann Lake's Lahontan cutthroat trout, which are considered a sensitive species. Strict catch-and-release is often mandated, and adherence to all Oregon Department of Fish & Wildlife (ODFW) regulations is crucial to preserve this unique wild population. Mann Lake offers a singular angling adventure, inviting dedicated enthusiasts to connect with wild, native trout in a magnificent and untamed landscape.
Latest Fish Reports
| Date | Report | Author |
| 11-25-2025 | Mann Lake was stocked with fingerling Lahontan Cutthroat last month Mann Lake was stocked with fingerling Lahontan Cutthroat... more » |
OR Department of Fish & Wildlife Staff |
| 10-15-2025 | Mann Lake was stocked with fingerling Lahontan Cutthroat this week Mann Lake was stocked with fingerling Lahontan Cutthroat... more » |
OR Department of Fish & Wildlife Staff |
| 7-1-2025 | Currently fishless Mann Lake is currently fishless we plan to... more » |
OR Department of Fish & Wildlife Staff |
| 6-5-2025 | Mann Lake is currently fishless Mann Lake is currently fishless. We plan to... more » |
OR Department of Fish & Wildlife Staff |
| 5-13-2025 | Mann Lake is currently fishless Mann Lake is currently fishless and may be... more » |
OR Department of Fish & Wildlife Staff |
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