In this case, it would threaten the aux/emergency Weir and not the main dam. Which is still a very bad thing, because while the dam would survive, losing the weir would result in a washout of a good amount of ground that would bring a lot of water down at one time.
I don't think that the water dribbling out of the 2 foot pipe is necessarily a bad thing. The area has had a lot of rain and the ground is saturated. This could easily be just excess water that has soaked into the area soil. Depends on where the drain goes.
https://mobile.twitter.com/MyAmerica120/status/832963324031619074?p=v
Check out picture of road washout from this morning
dam ping