Allegheny River being lowered Monday for work on Lock and Dam 9
The water level in the upper pool at Lock and Dam 9 on the Allegheny River will be lowered Monday while Northbrook Allegheny Hydro LLC replaces flashboards damaged by high water.
Pool 9 will be lowered to six-inches below the dam's crest, and the water level will drop about one foot below the pool's normal level, according to Corps spokesman Daniel Jones. The flashboards — used for increasing the depth of water behind a dam — will raise the water level in the pool by about six inches once installed.
“With this minimal rise and lowering of the pool, it shouldn't affect people's docks,” Jones said. “But we want people to know so they can check on them.”
Though unlikely with a fall and rise of only a foot, a drop in water could leave docks on dry land. When water levels rise, that could break the lines tying a dock to the shore, Jones said.
Chuck Ahlrich, president of Arizona-based Northbrook Energy, expects the work to be completed in a day if weather cooperates — something he said it hasn't done this year.
“It's scheduled to be done on Monday, provided we don't get a torrential downpour over the weekend,” Ahlrich said. “It's a little bit of a trial-and-error process this year. This has been a very unusual year, and river flows have been too high for us to get out there and do it.”
Northbrook is required to install the 2-foot by 15-foot timber and steel boards along the dam as part of its federal licensing agreement, Corps spokesman Jeff Hawk said.
Raising the water levels ensures pool 9 is high enough to accommodate boaters and keeps the levels like they were before hyrdroelectric stations went in in the 1980s, he said. The company removes the flashboards when boating season ends in October.
Julie E. Martin is a staff writer for Trib Total Media. She can be reached at 724-543-1303, ext. 1315 or firstname.lastname@example.org.
Show commenting policy
TribLive commenting policy
You are solely responsible for your comments and by using TribLive.com you agree to our Terms of Service.
We moderate comments. Our goal is to provide substantive commentary for a general readership. By screening submissions, we provide a space where readers can share intelligent and informed commentary that enhances the quality of our news and information.
While most comments will be posted if they are on-topic and not abusive, moderating decisions are subjective. We will make them as carefully and consistently as we can. Because of the volume of reader comments, we cannot review individual moderation decisions with readers.
We value thoughtful comments representing a range of views that make their point quickly and politely. We make an effort to protect discussions from repeated comments either by the same reader or different readers.
We follow the same standards for taste as the daily newspaper. A few things we won't tolerate: personal attacks, obscenity, vulgarity, profanity (including expletives and letters followed by dashes), commercial promotion, impersonations, incoherence, proselytizing and SHOUTING. Don't include URLs to Web sites.
We do not edit comments. They are either approved or deleted. We reserve the right to edit a comment that is quoted or excerpted in an article. In this case, we may fix spelling and punctuation.
We welcome strong opinions and criticism of our work, but we don't want comments to become bogged down with discussions of our policies and we will moderate accordingly.
We appreciate it when readers and people quoted in articles or blog posts point out errors of fact or emphasis and will investigate all assertions. But these suggestions should be sent via e-mail. To avoid distracting other readers, we won't publish comments that suggest a correction. Instead, corrections will be made in a blog post or in an article.
- Ford City takes step toward hiring third full-time police officer
- Armstrong students slow to apply for scholarships
- West Kittanning church fights through frozen pipe problems
- Kiskiminetas Democrat enters controller race
- DEP seeks origin of toxic chemicals left on road in Kittanning Twp.
- Bower won’t seek second term as Armstrong County commissioner
- Record lows put freeze on many in Armstrong County
- Rayburn considers tax break for business renovations
- Pizza, other sweet treats offered at new Worthington restaurant
- Armstrong school merger will result in job cuts
- Snow sculptures brighten family’s West Kittanning yard