Pahranagat National Wildlife Refuge Pahranagat National Wildlife RefugeStation reference point Lower Lake Unit (Special regs)720 acres Maynard Lake Unit (Special regs)987 acres Middle Marsh Unit (Special regs)1,020 acres Closed to Hunting (Closed)546 acres Headquarters Unit (Closed)438 acres North Marsh Unit (Closed)348 acres Upper Lake Unit (Closed)590 acres