Groundwater percolates into aquifers underground, where it can be stored for long periods of time or flow into rivers, lakes, and oceans. Runoff typically flows into streams, rivers, lakes, and eventually reaches the ocean.
Into lakes,streams, and rivers
runoff
Run off
It will just accumulate more water in the river but, if the runoff water becomes toxic due to nearby factories or power plants then it can damage that ecosystem.
Runoff water
runoff
Runoff
Runoff
runoff
I believe that would be called RUNOFF water.
Runoff.