Small note about meanders and a Mars example
The reason why water starts to meander is due to water rotating in the river. Why it does this is not certain but it may have to do with the corellas effect. The water rotates from top to bottom of the river. This cause the river to apply more force on certain parts of the bank than others. This cause uneven cutting along a straight section o the river, which starts a meander. Once a meander starts to form, the outside of the meander gets more of the water’s force because the water flows faster there. This caused more cutting to occur in the bank and the meander grows. On the inside of the meander the water slows, dumping it’s sediments.
The slope also effects the way a river meanders.
Meander in Hale Crater