>>5005349 (OP) >creates stagnant water that causes more dangerous bacteria to flourish, which will be unleashed into the rest of the ecosystem and wreak havoc when the dam takes any damage
>>5005349 (OP) it's not "dirty water" that's just water with loads of minerals, mud and materials from heavy rains, if there was no dam, by the next day all that would have been washed away and everything would look like the clear water on the right.