The waters of Lake Mead, the country’s largest reservoir, in the Lake Mead National Recreation Area in Nevada, are receding due to the drought this summer in the Western US states.

Lake Mead sits between Nevada and Arizona. 

The National Park Service had to get rangers to set up a perimeter in the Swim Beach area of the park, again, due to the findings of human remains, in order to conduct a criminal investigation.  

The latest skeletal find was discovered on Monday. It was the third to be found at the lake’s Swim Beach area.

The three findings at the lake are part of five times since May that remains have been found in the larger area. 

The investigation is being conducted by the Las Vegas Metropolitan Police Department. Their dive team assisted and the Clark County medical examiner’s office is participating. 

Human remains were last discovered earlier this month at Swim Beach. 

Details are sketchy, but investigators believe two of the skeleton remains may be linked. 

“At this time, the investigation into these remains includes working to determine whether the two sets of remains are from the same person or not,” the coroner’s office told the Las Vegas Review-Journal.

The first set of remains was found at the beginning of May, inside a barrel. Police believe the body was probably dumped in the lake about 40 years ago, and that the deceased had died of a gunshot wound. 

In mid-May, human bones were found of another man at Calville Bay. 

Police believe that the lake may have served as a popular dumping ground for killers and more remains may be discovered as the lake waters continue to recede.

Images from NASA show the lake’s quick shrinking since 2000. 1999 was the last time the lake had full capacity. 

The drought has also caused the lake to reveal dozens of sunken boats, trash, and baby strollers. In July, a sunken World War II boat was found. 

The drought is affecting the Colorado River, the Hoover Dam, and as a result, the connected Lake Mead Reservoir.