The National Park Service has reopened the boat launch ramp, campground and trailer village at Callville Bay, but the marina remains closed following Monday's flash flood.
Power has been restored to the area.
However, the damaged marina complex remains off-limits to the public, including those who rent slips there for their boats.
The Callville Bay store and lounge will be back to normal operating hours on Saturday, according to the park service.
Monday's flood sent a 10-foot-high wall of mud and water down Callville Wash and into the boat rental dock and buildings at the privately operated marina.
Damage has been estimated at more than $1 million.
The park service is still assessing the damage throughout the 1.5 million-acre Lake Mead National Recreation Area in the wake of Monday's powerful storm system.
Damage to back-country roads and trails has been discovered, including buckling and washed-out pavement on the River Mountain Loop Trail.
Contact reporter Henry Brean at email@example.com or 702-383-0350.