休斯顿地区的降雨已经释放，但由于水的无处可去，洪水预计将持续存在。河流尚未到达洪水阶段，工程师和州当局军团正试图管理湖泊和水库，以防止进一步的违规行为。

这Brazos River levee at Columbia Lakes, south of Houston, breached on Aug. 29, causing the county to alert its residents via Twitter to “Get out now.” The levee has since been fortified with materials such as concrete sacks, Brazoria County Judge Matt Sebesta told PBS Newshour on Aug. 29.

塞贝斯塔说，与2016年6月的洪水相比，这种情况大不相同。“当[Brazos River]将其河岸溢出时，它洒到了干燥的土地上，进入了一条非常普通的牡蛎溪。[Now,] Oyster Creek is full, all low lying areas are full, roadside ditches are full, the soil is fully saturated from the rains that we’ve had over the last three days ranging from 10-15 in in some areas, over 30 in in others,” he said. “This river flooding event will be very different from last year.”

Fort Bend County Judge Robert Hebert released a video statement on Aug. 30, noting the National Weather Service has lowered the forecasted crest of the Brazos River to 56 ft from 57.5 ft, expected to occur sometime early Friday morning. “That’s the good news,” Hebert says. “56 ft is the 100 year flood event for Fort Bend County [which] is what our levees are designed to defend against, ... I have no indication that any levee is having difficulty keeping the river out.” Mandatory evacuation orders remain in place for many parts of Fort Bend County, southwest of Houston, as the flooding is still at historical highs. “It is still a major flood in Fort Bend County, and 56 ft far exceeds the current record, which was set during the Memorial Day floods of 2016,” Hebert says.

North of Houston, the San Jacinto River Authority (SJRA) reported late on Aug. 29 that Lake Conroe’s water level is starting to slowly decline, with the current level at 203.7 ft above mean sea level (MSL), just 2.7 ft over the normal pool elevation of 201 ft MSL. The controlled release rate from the Lake Conroe Dam has subsequently been reduced to 22,172 cubic feet per second (cfs) from its peak of 79,100 cfs.

Water levels in the river downstream of the dam are beginning to decrease as well, according to SJRA. inflow to the lake has been a major problem, according to SJRA, with peak inflow coming in at approximately 130,000 cfs, while the peak release rate from Lake Conroe was 79,100 cfs.

军团水库释放更多水

这U.S. Army Corps of Engineers Galveston District(USACE)继续在一个版本控制ddicks and Barker Dams on Aug. 30, increasing the discharge rates to approximately 7,000 cubic feet per second and 6,000 cfs, respectively, for a combined total discharge of 13,000 cfs.

这Harris County Flood Control District (HCFCD) noted on Aug. 29 that the additional releases have added to the out-of-banks flooding in neighborhoods along Buffalo Bayou, and that the higher-than-normal controlled releases will continue to minimize the risk of flooding both above and below the dams. The Corps is targeting eventual releases of 8,000 cfs for both dams.

According to HCFCD, the outlet gates at both Addicks and Barker were closed on Aug. 25, but with the reservoir pools reaching record levels, the controlled stormwater releases have had to be significantly larger than normal. HCFCD further reported that releases at varying levels will continue until the reservoirs are empty, which could take several months.

根据USACE的说法

但是，在2009年，基于关于大坝安全性的技术问题，这两个结构都将两种结构指定为极高的风险，以及如果出口结构失败，则对城市的潜在后果。结构上确定的兵团包括大坝中的结构或门，这些结构或门可以流入Bayou和大坝的末端。

为了修改，2015年，USACE Galveston区向Granite Construction Co.授予了7200万美元的合同，用于在Addicks和Barker Dams建造新的出口结构。建设始于2016年，预计将花费大约五年。