Rivers and floodplains wouldn't be effected by the rising sea level. River systems get their water from precipitation not the sea. The only effect a sea level r

Rivers and floodplains wouldn't be effected by the rising sea level. River systems get their water from precipitation not the sea. The only effect a sea level rise would have on a river system is the delta of the river would move further inland with the coast line. However, one could argue there would be an increase in precipitation as less water is trapped in ice but that doesn't seem to be what many people are predicting. I say all this with the caveat that I am not very well read up on the science of all of this, I'm just going by what I have read in articles and what not.