Fish ladder
Videos
A fish ladder, also known as a fishway, fish pass, fish steps or fish cannon, is a waterway structure on or around artificial and natural barriers that provides aquatic animals a "detour" to facilitat
Pool-and-weir fish ladder at Bonneville Dam on the Columbia River
Salmon climbing a ladder on Issaquah Creek, Washington
Cameras or other types of devices can be used to count fish as they pass through the ladder.
Denil Fishway on Salmon Creek, Montana
Dam
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A dam is a structure that impounds water or restricts its flow. Dams are classified into four basic types: gravity dams are massive structures made of concrete or masonry that rely on their weight to
Fish ladder
…ladder, also known as a fishway, fish pass, fish steps or fish cannon, is a waterway structure on or around artificial and natural barriers (such as dams, locks and waterfalls) that provides aquatic animals (particularly fish) a "detour" to facilitate natural movements and migrations of diadromous and…
Misogawa Dam in Japan is an embankment dam.
Grande Dixence Dam in Switzerland is one of the world's tallest gravity dams. The people atop the dam's crest illustrate its size.
About 20 buttresses are visible in this photo of Latyan buttress dam in Iran.
This arch dam in Tasmania is curved in both the vertical and horizontal directions.