Havasu National Wildlife Refuge Havasu National Wildlife RefugeStation reference point Havasu Wilderness - AZ (Special regs)13,395 acres Havasu Wilderness - CA (Special regs)1,626 acres Lake Havasu - AZ (Special regs)2,466 acres Lake Havasu - CA (Special regs)1,404 acres Pintail Slough (Special regs)443 acres Topock Gorge - AZ (Special regs)3,134 acres Topock Gorge - CA (Special regs)2,957 acres Topock Marsh East - AZ (Special regs)7,240 acres Topock Marsh West (Special regs)6,065 acres Headquarters (Closed)9.9 acres Mesquite Bay (Closed)232 acres