Just got this email:
March 27, 2019
Hello,
Lower and North Pines will be opening on Monday, April 1.
The comfort station that serves sites 55-71 in Lower Pines is inoperable due to extensive damage. Portable toilets and hand-washing stations will be available instead.
Sites in both Lower and North Pines that were appearing as walk up between April 1 and May 21 will be released for advanced reservations on Saturday, March 30 at 7:00 a.m. Pacific time.
Reservations may be made at www.recreation.gov or by calling 877-444-6777.
Sincerely,
Eric Bissmeyer
Campground Manager
Yosemite National Park