Severe floods have battered Yellowstone NP and caused the shutdown of the Park. The damage seems most severe in the areas around the Northern (Gardiner) and North-East (Silver Gate) entrances.
Anecdotes on the impact to local businesses
Last time I was in Yellowstone NP, there was some ongoing road work, so the top loop was incomplete.
My own visits to the National Park have always use the Gardiner entrance and exited the South entrance.
My visits have been prior to the busy Summer season. I have no idea what this Summer will be like when some portion of the NP might reopen.
Mentioned near the end of article - flood impacts to Glacier NP.
Grabbed a different link
At least Glacier NP is still open currently.
Those are both beautiful National Parks to visit and enjoy - hope the parks and surrounding towns recover quickly.