I understand (I think) why Canals have them, but why rivers
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I keep seeing the word ‘dam’ and feel it should be Weir.
A dam stops the water flowing, a Weir is a way to keep the water level high, by letting the excess flow over the top.
I keep seeing the word ‘dam’ and feel it should be Weir.
A dam stops the water flowing, a Weir is a way to keep the water level high, by letting the excess flow over the top.
They are there to allow boats to travel up and down the river. The river flows downhill, and if it’s too steep, the water flows in such a way that the water level will be too low in that fast moving section for boats to travel. The lock usually accompanies a dam or weir to raise the water level upstream, but the boat needs to use the lock to make that height transition. The only difference when a canal uses them is that it was planned out in advance, along with the rest of the canal, where as in a river we have to do some modifications.
Source: I live near a lot of locks
They are there to allow boats to travel up and down the river. The river flows downhill, and if it’s too steep, the water flows in such a way that the water level will be too low in that fast moving section for boats to travel. The lock usually accompanies a dam or weir to raise the water level upstream, but the boat needs to use the lock to make that height transition. The only difference when a canal uses them is that it was planned out in advance, along with the rest of the canal, where as in a river we have to do some modifications.
Source: I live near a lot of locks
They are there to allow boats to travel up and down the river. The river flows downhill, and if it’s too steep, the water flows in such a way that the water level will be too low in that fast moving section for boats to travel. The lock usually accompanies a dam or weir to raise the water level upstream, but the boat needs to use the lock to make that height transition. The only difference when a canal uses them is that it was planned out in advance, along with the rest of the canal, where as in a river we have to do some modifications.
Source: I live near a lot of locks
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