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Historic stream surveys
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Dams
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421. [Image] Small storage dam
Small storage dam on the Tualatin River, located 3 miles above the mouth It is 3 feet high but the downstream apron makes passage difficult; 1937-06-24Citation -
422. [Image] Fish ladder near Carlton, Oregon
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423. [Image] Dam on Milk Creek
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424. [Image] Mill dam in Long Tom River
Mill dam in Long Tom River above Noti, Oregon Impassable at present water;1938Citation -
425. [Image] Union water supply reservoir
Lower dam in Union, Oregon, water supply reservoir. At low water it is a barrier to fishCitation -
426. [Image] East fish trap at Rock Island Dam
East fish trap and upper part of fish ladder at the Rock Island DamCitation -
427. [Image] Headgate in Rosa irrigation diversion
Downstream view of the rotary gate at the head of the Rosa irrigation ditch at the Rosa DamCitation -
429. [Image] Rock Island Dam
Rock Island Dam on the Columbia RiverCitation -
430. [Image] Chinooks jumping over middle rocks
Rock Island DamCitation