Are slow dam releases to blame for Western flooding?

Jun 3 2011 - 4:35pm

Images

The Missouri River is seen from the south and running between South Sioux City, Neb., left, and Sioux City, Iowa, right, as it continues to rise overflowing its banks as the Corp of Engineers continues to increase the flow of water through dams north of the Siouxland area, in North Sioux City, S.D., as the Missouri River is still rising and overflowing its banks, Friday, June 3, 2011. The Corp of Engineers continues to increase the flow of water through dams north of the Siouxland area. The Missouri River dams were built to control periodic spring flooding and provide hydropower, irrigation and other benefits after Congress passed the Flood Control Act of 1944. (AP Photo/Mercy Air Care-Sioux City, Jerry Mennenga)
Flood waters cover the Wynstone residential area in North Sioux City, S.D., as the Missouri River is still rising and overflowing its banks, Friday, June 3, 2011. The Corp of Engineers continues to increase the flow of water through dams north of the Siouxland area. The Missouri River dams were built to control periodic spring flooding and provide hydropower, irrigation and other benefits after Congress passed the Flood Control Act of 1944. (AP Photo/Mercy Air Care-Sioux City, Jerry Mennenga)
In this June 2, 2011 photo, a sign outside of an evacuated home expresses displeasure with the U.S. Army Corps of Engineers in Ft. Pierre, S.D. (AP Photo/Doug Dreyer)
Water pools in the street in front of sandbagged homes Thursday, June 2, 2011 in Ft. Pierre, S.D. South Dakota's governor has urged some residents to evacuate from three cities considered early trouble spots as officials brace for a prolonged period of Missouri River flooding. (AP Photo/Doug Dreyer)
Members of the South Dakota Army National Guard wait for more sand bags to be delivered as they work on a levee to protect Dakota Dunes, S.D., Friday, June 3, 2011. The southeast South Dakota city is threatened by Missouri River flooding, following record rainfall across the northern Plains, and South Dakota Gov. Dennis Daugaard wants all residents of the Country Club area of Dakota Dunes to be out of their homes before midnight Friday. He says homeowners might not be able to return for two months. (AP Photo/Nati Harnik)
Crews build a levee to surround Dakota Dunes, S.D., against the rising waters of the Missouri River, Friday, June 3, 2011. The southeast South Dakota city is threatened by Missouri River flooding, following record rainfall across the northern Plains, and South Dakota Gov. Dennis Daugaard wants all residents of the Country Club area of Dakota Dunes to be out of their homes before midnight Friday. He says homeowners might not be able to return for two months. (AP Photo/Nati Harnik)
The Missouri River is seen from the south and running between South Sioux City, Neb., left, and Sioux City, Iowa, right, as it continues to rise overflowing its banks as the Corp of Engineers continues to increase the flow of water through dams north of the Siouxland area, in North Sioux City, S.D., as the Missouri River is still rising and overflowing its banks, Friday, June 3, 2011. The Corp of Engineers continues to increase the flow of water through dams north of the Siouxland area. The Missouri River dams were built to control periodic spring flooding and provide hydropower, irrigation and other benefits after Congress passed the Flood Control Act of 1944. (AP Photo/Mercy Air Care-Sioux City, Jerry Mennenga)
Flood waters cover the Wynstone residential area in North Sioux City, S.D., as the Missouri River is still rising and overflowing its banks, Friday, June 3, 2011. The Corp of Engineers continues to increase the flow of water through dams north of the Siouxland area. The Missouri River dams were built to control periodic spring flooding and provide hydropower, irrigation and other benefits after Congress passed the Flood Control Act of 1944. (AP Photo/Mercy Air Care-Sioux City, Jerry Mennenga)
In this June 2, 2011 photo, a sign outside of an evacuated home expresses displeasure with the U.S. Army Corps of Engineers in Ft. Pierre, S.D. (AP Photo/Doug Dreyer)
Water pools in the street in front of sandbagged homes Thursday, June 2, 2011 in Ft. Pierre, S.D. South Dakota's governor has urged some residents to evacuate from three cities considered early trouble spots as officials brace for a prolonged period of Missouri River flooding. (AP Photo/Doug Dreyer)
Members of the South Dakota Army National Guard wait for more sand bags to be delivered as they work on a levee to protect Dakota Dunes, S.D., Friday, June 3, 2011. The southeast South Dakota city is threatened by Missouri River flooding, following record rainfall across the northern Plains, and South Dakota Gov. Dennis Daugaard wants all residents of the Country Club area of Dakota Dunes to be out of their homes before midnight Friday. He says homeowners might not be able to return for two months. (AP Photo/Nati Harnik)
Crews build a levee to surround Dakota Dunes, S.D., against the rising waters of the Missouri River, Friday, June 3, 2011. The southeast South Dakota city is threatened by Missouri River flooding, following record rainfall across the northern Plains, and South Dakota Gov. Dennis Daugaard wants all residents of the Country Club area of Dakota Dunes to be out of their homes before midnight Friday. He says homeowners might not be able to return for two months. (AP Photo/Nati Harnik)

FORT PIERRE, S.D. (AP) -- Sitting atop a 6-foot wall of white sandbags hastily stacked to protect his home from the rising Missouri River, 82-year-old Helmet Reuer doesn't buy the official explanation that heavy rains caused a sudden flood threat.

Along with his neighbors in an upscale section of Fort Pierre, Reuer thinks the U.S. Army Corps of Engineers blew it, waiting until too late to begin releasing water through the Missouri's six dams to give itself a cushion against potential flooding.

"It's human error," Reuer said as rising water neared his trim gray house.

Corps officials insist otherwise. They say they were in good shape to handle spring rain and melt from a massive Rocky Mountain snowpack until unexpectedly heavy rains of 8 inches or more fell last month in eastern Montana and Wyoming and western North Dakota and South Dakota.

"This is just a massive rain that fell in the exact wrong place at the exact wrong time," said Eric Stasch, operations manager at Oahe Dam, the huge structure that controls the Missouri's flow just above Fort Pierre and nearby Pierre, South Dakota's capital.

Crews have worked urgently all week to build up levee protections for the two cities, and say they expect to have 2 feet to spare. But Gov. Dennis Daugaard advised people in neighborhoods nearest the river to leave voluntarily in case levees don't hold, and hundreds have done so after a hectic week of moving possessions and adding sandbags around their houses.

They face weeks out of their homes until the river begins cresting in mid-June, with high water expected to linger for up to two months. The small town of Dakota Dunes, S.D., in the southeastern tip of the state, has also erected levees, as has Bismarck, N.D., though the situation is less serious there.

"I think they screwed up royally," former Gov. Mike Rounds said of the Corps, as he moved some possessions from the riverbank house he and his wife built and moved into after he left office in January. "I think they forgot their No. 1 mission, and that's flood protection."

People here were prepared for some higher flows, but many were startled when the Corps announced May 26 it needed to release water much faster than expected from the dams in Montana and the Dakotas.

Jody Farhat, chief of Missouri River Basin water management in the corps' Omaha District, said the agency made no mistakes and has managed releases in accordance with its manual. She said conditions on May 1 indicated peak releases at only a third of what they're now projected, and the reservoir system had full capacity to deal with flood control at the start of the runoff season. All that changed with the record rainfall in the upper basin and additional snow in the mountains, she said.

Farhat said heavy runoff from last year was released before the start of this year's runoff season, and discharges this spring were above normal even before the heavy rainfall upstream.

Corps officials declined a request for a one-one-one interview and provided some information by email, but in a teleconference Thursday, Farhat said the reservoirs had reached the desired levels before snowmelt was to begin.

"And what happened was we had this incredible rainfall event," Farhat said. "That was a rainfall event in May, and that was the game-changer in terms of system operations."

People who live in the flood-threatened areas say this wasn't supposed to happen.

The Missouri River dams were built to control periodic spring flooding and provide hydropower, irrigation and other benefits after Congress passed the Flood Control Act of 1944. Fort Peck Dam, in northeastern Montana, was already operating in 1940 and Oahe, a massive reservoir that runs from North Dakota to the dam near Pierre in central South Dakota, was completed in 1962. Big Bend, about 60 miles downstream from Oahe, was the last dam finished, in 1964.

This is not the first fight over Missouri River water management, but the dispute has more often been about too little water. A series of lawsuits was filed during a prolonged drought that started about a decade ago. Upstream states wanted more water left in the reservoirs to support a growing sport fishing industry, while states downstream wanted more water to support barge traffic on the free-flowing stretch from Sioux City, Iowa, to St. Louis.

The U.S. Supreme Court declined to consider the legal fight in 2006, leaving intact a federal appeals court ruling that said navigation trumps upstream recreation and other interests when the Corps of Engineers manages the river.

In Montana, officials in downstream communities said some people faulted the Corps for not releasing water earlier from Fort Peck Dam, the first in the series of water-control structures on the river.

But Roosevelt County Commissioner Gary MacDonald said he was reluctant to blame the federal agency.

"That's the sentiment here of why did they wait," MacDonald said. "There's no better person for the average John Doe to blame out there than the Corps. They're taking the brunt of it because they're controlling the flow."

Back in South Dakota, Daugaard also declined to criticize the Corps, saying he had seen "no evidence that they're working other than in good faith" to deal with the situation.

At Oahe Dam, the quickening pace of the water releases through rarely used gates -- more than 100,000 cubic feet per second and building -- makes for a foaming, thundering spray that brought spectators by the carload before it was closed for safety reasons. But many here have no time to appreciate the river's power.

"I'm tired and I'm sick," Mike Richardson said as he loaded household items into a trailer to move them from his Fort Pierre house to higher ground. "I'm better off than a lot of people, I know, but I still can't help but feel sorry for myself. ... Somebody really dropped the ball on this deal."

 

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