Braided channels
Braiding = river is forced to split into several channels separated by islands.
Rivers - supplied with large loads of sand + gravel.
Occur - river has variable discharges.
The banks = formed from sand + gravel = unstable +easily eroded= channel becomes very wide in relation to its depth. The river = choked- several sandbars + channels- constantly changing their locations.
Braiding also occurs in environments - rapidly fluctuating discharges:
1. Semi arid areas - low relief that receive rivers from mountainous area
2. Glacial streams - variable annual discharge. In spring, meltwater = river discharge + competence = increase= transports more particles= temperature drops + the river level falls= load is deposited as islands of deposition in the channel.
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