官员周日宣布，在该国最大的水库米德湖再次发现人类遗骸，该水库在数十年的干旱中持续萎缩。

根据国家公园管理局的说法，周六上午11点15分左右，有人在内华达州一侧米德湖国家娱乐区的公园游泳海滩发现了这一现象。这是自五月以来第四次发现人类遗骸在米德湖被发现那里的水位继续下降到历史水平。

NPS说，在拉斯维加斯警察局潜水队的帮助下，公园管理员做出了反应，并建立了一个周界来取回遗体。

官员们表示，水库的水位非常低，可能会达到“死池”状态，这意味着水位太低，无法流向下游。

根据美国开垦局的数据，胡佛大坝发电所需的最低水面高度为1050英尺。根据联邦机构的说法，任何低于这一水平的都被认为是“不活跃的水池”，当水位达到895英尺时，“死水池”就存在了。

美国宇航局上个月发布的卫星图像显示并排比较一张拍摄于2000年7月6日，另一张拍摄于20多年后的今年7月6日。

水位下降的一个结果是尸体和人体部分不断出现。

根据国家公园管理局的说法，5月7日，在该湖的卡勒维尔湾附近发现了人类骨骼遗骸。据LVMPD报道，一周前，一名男子的腐烂尸体被发现塞在距离卡勒维尔湾20多英里的水库赫门威捕鱼码头附近的一个钢桶中。

7月25日，在泳滩也发现了人类遗骸。

官员们周六对最近的发现展开了调查，并联系了克拉克县法医以确定死因。

4th set of human remains found in Lake Mead

Human remains were again found in Lake Mead, the country's largest reservoir that continues to shrink amid a decades-long drought, officials announced Sunday.

According to the National Park Service, someone made the discovery at the park's Swim Beach in Lake Mead National Recreation Area, on the Nevada side, around 11:15 a.m. Saturday. This marks the fourth time since May that human remainswere found in Lake Mead, where water levels continue to recede at historic levels.

With the help of the Las Vegas Metropolitan Police Department's dive team, park rangers responded and set up a perimeter to retrieve the remains, the NPS said.

Officials have said the reservoir's water levels are so low they could hit "dead pool" status, which means that the water is too low to flow downstream.

The minimum water surface level needed to generate power at the 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 hits 895 feet, according to the federal agency.

Satellite images released last month by NASA showside-by-side comparisonsof Lake Mead, one taken on July 6, 2000, and the other more than two decades later on July 6 of this year.

A result of the diminishing water level is that bodies and human parts have been emerging.

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 the decayed body of a man was found stuffed in a steel barrel near the reservoir's Hemenway Fishing Pier, more than 20 miles from Callville Bay, according to the LVMPD.

On July 25, human remains were also found at Swim Beach.

Officials launched an investigation into the most recent discovery on Saturday, and the Clark County Medical Examiner has been contacted to determine the cause of death.