City of Ann Arbor has closed the courses at Bandemer and Mary Beth Doyle until Apr 13th.
Form the city's website
Seems the Metroparks are still open.
Looks like Rolling Hills and Indy Lake are still open...
From Wastenaw County's site Washtenaw County's page
It specifically says "for access to the trails." They call out any specific outdoor activities/facilities that say are closed.
I see you updated both courses on Disc Golf Scene as well. Thanks Bogey.