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  2. Columbia River - Wikipedia

    en.wikipedia.org/wiki/Columbia_River

    However, improper construction of fish ladders can result in salmon populations exerting significantly more energy when breeding, which results in higher levels of fallback. [136] Chief Joseph Dam has no fish ladders and completely blocks fish migration to the upper half of the Columbia River system. [137]

  3. Bonneville Dam - Wikipedia

    en.wikipedia.org/wiki/Bonneville_Dam

    Bonneville Lock and Dam / ˈbɒnəvɪl / consists of several run-of-the-river dam structures that together complete a span of the Columbia River between the U.S. states of Oregon and Washington at River Mile 146.1. [ 6 ] The dam is located 40 miles (64 km) east of Portland, Oregon, in the Columbia River Gorge.

  4. John Day Dam - Wikipedia

    en.wikipedia.org/wiki/John_Day_Dam

    The John Day Dam is a concrete gravity run-of-the-river dam spanning the Columbia River in the northwestern United States. [3] The dam features a navigation lock plus fish ladders on both sides. The John Day Lock has the highest lift (at 110 feet or 34 meters) of any U.S. lock. [4] The reservoir impounded by the dam is Lake Umatilla, [5] and it ...

  5. Fish ladder - Wikipedia

    en.wikipedia.org/wiki/Fish_ladder

    Pool-and-weir fish ladder at Bonneville Dam on the Columbia River Drone video of a fish way in Estonia, on the river Jägala FERC Fish Ladder Safety Sign. A fish ladder, also known as a fishway, fish pass, fish steps, or fish cannon, is a structure on or around artificial and natural barriers (such as dams, locks and waterfalls) to facilitate diadromous fishes' natural migration as well as ...

  6. Chief Joseph Dam - Wikipedia

    en.wikipedia.org/wiki/Chief_Joseph_Dam

    The River and Harbor Act of 1948 renamed the project Chief Joseph Dam in honor of the Nez Perce chief who spent his last years in exile on the Colville Indian Reservation. Because of its lack of fish ladders, Chief Joseph Dam completely blocks salmon migration to the upper Columbia River system.

  7. McNary Dam - Wikipedia

    en.wikipedia.org/wiki/McNary_Dam

    5,170 GWh [1][2] McNary Dam is a 1.4-mile (2.2-km) long concrete gravity run-of-the-river dam which spans the Columbia River. It joins Umatilla County, Oregon with Benton County, Washington, 292 miles (470 km) upriver from the mouth of the Columbia. [3] It is operated by the U.S. Army Corps of Engineers ' McNary Lock and Dam office.

  8. How are RI's fish ladders working? Scientists await word from ...

    www.aol.com/ris-fish-ladders-working-scientists...

    But about a mile upstream at a second fish ladder, and then several miles farther up still at a third fish passage where the river’s natal headwaters spill out of Indian Lake, state fisheries ...

  9. Rocky Reach Dam - Wikipedia

    en.wikipedia.org/wiki/Rocky_Reach_Dam

    Rocky Reach Dam. Rocky Reach Dam is a run-of-the-river hydroelectric dam in the U.S. state of Washington owned and operated by Chelan County Public Utility District. It has 11 generators rated in total 1300 MW. The project is on the Columbia River in north central Washington state about seven miles (11 km) upstream from the city of Wenatchee.

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