Erosion in its spillways threatened cities that are miles downstream, with possible flash flooding.

溢洪道的侵蚀威胁着下游数英里的城市，可能引发山洪暴发。

It has two spillways, passageways where extra water can flow out of the reservoir.

它有两溢洪道，额外的水可以从水库流出的通道。

The reservoir also has an emergency spillway.

水库还设有应急溢洪道。

Their report listed seven concerns,   the most significant of which was that the dam didn't have enough spillway capacity.

他们的报告列出了七问题，其中最严重的是大坝的溢洪道容量不足。

At 3: 30 PM, all six gates (three at each  spillway) were fully opened.

下午3点30分，所有六闸门（每溢洪道三）全部打开。

CNN's Paul Vercammen spent Sunday night reporting on how workers planned to reinforce the emergency spillway.

CNN 的保罗·佛卡门 (Paul Vercammen) 在周日晚上报道了工人们计划如何加固紧急溢洪道。

It was an earthfill embankment dam  with two spillways and a powerhouse.

它是一座设有两溢洪道和一座发电厂的土石坝。

Operators noticed  severe erosion from the quickly flowing water in the reservoir near the east spillway along  the embankment.

作员注意到靠近东溢洪道沿岸堤的水库中快速流动的水造了严重的侵蚀。

By 7 AM, operators at the dam had started opening gates on  both spillways to release some of the floodwaters downstream.

早上7点，大坝的作员开始打开两溢洪道的闸门，以释放部分下游的洪水。

Although the spillway for the dam was undersized per state regulations, this storm  event didn't completely overwhelm the structure.

尽管大坝的溢洪道尺寸小于州规定的标准，这场暴风雨并没有完全压垮该结构。

In the main spillway, erosion has opened a hole almost the size of a football field and it's at least 40 feet deep.

在主溢洪道中，侵蚀造了一几乎有一足球场那么大的洞， 而且至少有 40 英尺深。

It consisted of an  earthen embankment, a gated spillway, an emergency spillway, and a powerhouse for the turbines,   generators, and other hydroelectric equipment.

它由土石坝、带闸溢洪道、紧急溢洪道以及容纳涡轮机、发电机和其他水力发电设备的厂房组。

Acting as a spillway for the Mississippi River, over a million acres of  balmy lowlands make up the Atchafalaya Swamp, the largest wetland in the country.

作为密西西比河的溢洪道，超过一百万英亩的温暖低地组了阿查法拉亚沼泽，这是该国最大的湿地。

The problem, on Sunday, inspectors found that the emergency spillway was also eroding and if it fails, it could cause flash flooding all the way to Sacramento, 75 miles away.

问题是，周日，检查人员发现紧急溢洪道也在受到侵蚀， 如果发故障，可能会导致山洪暴发， 一直到 75 英里外的萨克拉门托。

The heavy lifting with heavy equipment, they are breaking up rocks, putting these rocks in bags and they intend to put these rocks in the breach, in the backup spillway.

他们用重型设备进行繁重的搬运工作， 他们正在打碎岩石，将这些岩石装在袋子里， 他们打算将这些岩石放在备用溢洪道的破口处。

Eventually it became clear to operators that  they would have to pick a lesser evil: Increase discharges and flood the powerhouse or let the  reservoir rise above the emergency spillway.

最终，作人员清楚地意识到，他们必须选择一较小的害处：增加流量并淹没发电站， 或者让水库高于紧急溢洪道。

After losing the license to generate hydropower, jurisdiction over the dam fell to the  State of Michigan, where disagreements about its structural condition, spillway capacity,   and water levels in Wixom Lake continued.

在失去水力发电许可后，对该大坝的管辖权移交给了密歇根州，关于其结构状况、溢洪道容量以及Wixom湖水位的争议仍在继续。