atx_californian t1_j6uni81 wrote
Reply to comment by Popuppete in Rivers of the World! coloured according to the major hydrological basins they are part of. [OC] by symmy546
There is a gigantic bedrock bowl beneath the great lakes that traps anything that falls on it. There isn't really anywhere for the water to go other than towards Niagara falls. Other basins probably have more groundwater absorption by comparison
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