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- Mann Lake is the largest of the shallow playa lakes in the northern part of the Alvord Valley in Harney County in the U.S. state of Oregon. The lake is a remnant of a larger Pleistocene lake that covered much of the valley, east of Steens Mountain. Fields–Denio Road runs along the east side of the lake. Inflow to Mann Lake comes from small, intermittent streams, mainly from Steens Mountain. The lake, which has no outlet, but loses water by evaporation, is hypereutrophic. An influx of cattle waste from nearby rangelands adds to the lake's natural eutrophic state. Large concentrations of Cladophora algae are common. The Bureau of Land Management operates the Mann Lake Recreation Site, about 100 miles (160 km) southeast of Burns by highway and unpaved road. The site has vault restrooms and boat ramps, but no other amenities. Recreation at or near the site includes fishing, camping, hiking, wildlife viewing, and amateur geology. Mann Lake, stocked with Lahontan cutthroat trout, has been called "one of the premiere trout fisheries in southeast Oregon". Trout in the lake range in length from 12 to 20 inches (30 to 51 cm). Fishing is restricted to artificial flies and lures. A large population of goldfish, introduced illegally, have at times multiplied in Mann Lake and competed for food with the smaller trout. In 2010, the Oregon Department of Fish and Wildlife treated the lake with rotenone, a piscicide, killing around 200,000 goldfish and fathead minnows while sparing nearly all the trout. (en)
- マン湖（マンこ、Mann Lake）は、アメリカ合衆国オレゴン州ハーニー郡にある湖。スティーンズ山東部に連なる更新世の海外線変動によって内陸に取り残された湖の一つで、アルボードバレー北部のプラヤの中では最大の面積を有する。 マン湖へはスティーンズ山から小規模の河川流入があるが、流出河川は無く蒸発によって水分を失う。近隣の遊牧地からくる動物性廃棄物の流入もあり、マン湖は高腐食性かつ冨栄養状態である。 マン湖はの産地でもあるが、近年はキンギョの大量流入、繁殖により、稚魚や小動物の生態系に悪影響が及んだ。このため、2010年におよそ200,000匹のキンギョやファットヘッドミノーの駆除が行われている。 (ja)
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- 4963 (xsd:nonNegativeInteger)
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- Intermittent streams (en)
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- Location of Mann Lake in Oregon, USA. (en)
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- Natural, hypereutrophic (en)
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- 42.772222222222226 -118.44694444444444
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- マン湖（マンこ、Mann Lake）は、アメリカ合衆国オレゴン州ハーニー郡にある湖。スティーンズ山東部に連なる更新世の海外線変動によって内陸に取り残された湖の一つで、アルボードバレー北部のプラヤの中では最大の面積を有する。 マン湖へはスティーンズ山から小規模の河川流入があるが、流出河川は無く蒸発によって水分を失う。近隣の遊牧地からくる動物性廃棄物の流入もあり、マン湖は高腐食性かつ冨栄養状態である。 マン湖はの産地でもあるが、近年はキンギョの大量流入、繁殖により、稚魚や小動物の生態系に悪影響が及んだ。このため、2010年におよそ200,000匹のキンギョやファットヘッドミノーの駆除が行われている。 (ja)
- Mann Lake is the largest of the shallow playa lakes in the northern part of the Alvord Valley in Harney County in the U.S. state of Oregon. The lake is a remnant of a larger Pleistocene lake that covered much of the valley, east of Steens Mountain. Fields–Denio Road runs along the east side of the lake. Mann Lake, stocked with Lahontan cutthroat trout, has been called "one of the premiere trout fisheries in southeast Oregon". Trout in the lake range in length from 12 to 20 inches (30 to 51 cm). Fishing is restricted to artificial flies and lures. (en)
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