You can only store so much water behind a dam. If the flood crest is still upstream and the lake unable to absorb the inflow then releases are necessary. What they are trying to do is attenuate the flood, by absorbing what they can and adding to the lake capacity by spilling. It is a carefully calculated process to release on the tail end of downstream flooding. However, if they don't discharge, even worse can happen.
That's what I thought .. thanks for the info
http://www.nbc4i.com/weather/4078959/detail.html
Water Released From Local Dams
Delaware Dam Release Ongoing
COLUMBUS, Ohio -- Water was released from several area dams as officials prepare for more rain throughout the day.
The U.S. Army Corps of Engineers conducted controlled water releases from the Alum Creek and Delaware dams. About 8.5 feet of water is gradually being released from the Delaware Dam, which will raise the water level of the Olentangy River.
Officials said the release was not expected to cause flooding above and beyond the levels experienced during the past two weeks. Central Ohio is expected to receive about 1 inch of additional rainfall Thursday. If more falls, increased flooding could occur, officials said.
"The reservoir behind the dam is currently at a high level," said Larry Fisher, of the Delaware County EMA. "It is at 944.4 feet. The critical stage level is 947 feet."
Dams Near Capacity
The Corps of Engineers said the Olentangy might rise above its banks starting Saturday if more heavy rain falls in the area. Residents in low-lying areas near the Olentangy and nearby tributaries in Delaware County are asked to be prepared to move to higher ground.
Most of the area where flooding might occur is within one-half mile of the Olentangy.
The water level in local dams is being monitored, officials said, and more water could be released if deemed necessary.
In Columbus, flood walls are back up in a couple of areas along the Scioto River to prevent further flooding.
Ohio State Makes Plans
The Ohio State University is making contingency plans in case of flooding along the Olentangy River due to the controlled release at the Delaware Dam.
"Those working in buildings in closest proximity to the river are being encouraged to take steps to protect equipment and data in the unlikely event the river does overflow," said William Shkurti, senior vice president for business and finance. "Student Affairs officials also are working to determine the appropriate course of action should students in Morrill and Lincoln towers be affected.
The university said Thursday night that classes will be held Friday as normal after receiving information from EMA officials.
Flood Aid
There are several agencies Central Ohioans can contact to apply for flood aid.
Low-income victims in Franklin County can contact the Department of Job and Family Services at (614) 462-4905. The American Red Cross can be reached at (614) 251-1443. The Ohio Emergency Management Association can be found at (614) 794-0213.
To apply for flooding assistance from the state, visit the EMA Web site or the Job and Family Services Web site.
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