According to the National Park Service, someone made the discovery at the park’s Swim Beach at Lake Mead National Recreation Area on the Nevada side around 11:15 a.m. Saturday. This is the fourth time since May that human remains have been found in Lake Mead, where water levels continue to recede to historic levels. With the help of the Las Vegas Metropolitan Police Department’s dive team, rangers responded and set up a perimeter to retrieve the remains, the NPS said. Officials said the reservoir’s water level is so low it could reach “dead pool” status, meaning the water is too low to flow downstream. The minimum water surface level required to generate power at Hoover Dam is 1,050 feet, according to the U.S. Bureau of Reclamation. Anything below that is considered an “inactive pool” and a “dead pool” exists when the water level reaches 895 feet, according to the federal agency. Satellite images released last month by NASA show side-by-side comparisons of Lake Mead, one taken on July 6, 2000, and the other more than two decades later, on July 6 of this year. Images released by NASA show the loss of water in Lake Mead, Nevada on July 3, 2022 since July 6, 2000. NASA As a result of the receding water level, bodies and human parts have surfaced. On May 7, human skeletal remains were found near the lake’s Callville Bay, according to the National Park Service. The discovery came a week after a man’s decomposing body was found stuffed in a steel barrel near the reservoir’s Hemenway Fishing Pier, more than 20 miles from Callville Bay, according to LVMPD. On July 25, human remains were also found at Swim Beach. Officials began an investigation into the latest discovery Saturday, and the Clark County Medical Examiner has been contacted to determine the cause of death. ABC News’ Julia Jacobo contributed to this report.