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18

Once a dam has been constructed in a river, the natural flow of water will be disrupted. You correctly state that initially there will be a period required for the dam to fill. Until then, little of no water will flow beyond the dam. Dams are created for one or more of three reasons: To supply potable water to a population of humans for domestic or ...


14

You're correct that simply putting a dam in place, once its lake is filled, doesn't change the average flow downstream by more than a few percent (those few percent can be lost to increased evaporation). However, Many dam systems are used to abstract water from the river for irrigation and other uses, sometimes on a very large scale. This does reduce the ...


6

It is unlikely just from erosion. There are a couple reasons for this but because of the time scale over which this process would occur, other phenomenons might change the geologic picture completely. The reason the canyon formed in the first place is because of tectonics that uplifted the rocks. From this page: Uplift of the Colorado Plateau was a key ...


5

The carvings are submarine canyons, a part of the continental slope leading from the continental shelf to the continental rise and ultimately the Abyssal plains. They are a product of : erosion through currents and slumping of the continental shelf Like other erosive or slumping effects, they can be self-reinforcing, leading to canyon-like structures. The ...


2

It would be unlikely for the Grand Canyon/Colorado, simply because the mouth of the river is too far from the ocean, and the outlet is in the relatively shallow end of the Sea of Cortez: https://en.wikipedia.org/wiki/Gulf_of_California That means that sediments will be deposited to form a delta https://en.wikipedia.org/wiki/Colorado_River_Delta and as the ...


2

I'm not aware of any classification of rivers by width, per se. But something that you might find of interest is the classification of European inland waterways, as per Wikipedia or this map: https://www.unece.org/fileadmin/DAM/trans/main/sc3/European_inland_waterways_-_2012.pdf (beware large PDF map, don't try to open on a cellphone) There are a range ...


1

The Citarum River, originates in Situ Cisanti located at the foot of Mount Wayang, which lies to the south of the city of Bandung, and travels to the north until it empties into the Java Sea. Situ Cisanti is a artificial lake, about 5 to 10 ha in size, depending on which sources one reads. It is fed by seven springs: Citarum, Cikoleberes, Cikahuripan, ...


1

It all depends where you are and how carefully you choose your water sources. In the Malaysian jungle (peninsular Malaya and Sarawak), I used natural water sources all the time for years on end without ill consequences. There are numerous springs and small streams where the water is always good, but we never used a main river where there was habitation ...


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