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| Street View, Feb 2024 |
"The Ozark-Jetta Taylor Lock and Dam is approximately 2,500 feet (762 m) long, 42 feet (13 m) high and has a structural volume of 120,000 cubic yards (91,747 cubic metres). The reservoir has a normal storage capacity of 129,000 acre-ft (159,119 Ml) and maximum capacity of 148,400 acre-ft (183,048 Ml). The dam has a 750 feet (229 m) wide controlled spillway with a maximum discharge capacity of 570000 cubic feet per second (16141 cubic metres per second)." [DamsOfTheWorld]
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| USACE_photo, Tomas Rofkahr "Headed down the Arkansas, a barge locks through at the Ozark-Jetta Taylor Lock and Dam. Located at mile 308 of the river, the Ozark lock and dam is just one unit of the McClellan-Kerr Arkansas River Navigation System (MKARNS) that originates at the Port of Catoosa in Tulsa, Oklahoma. Running southeast through Oklahoma and Arkansas to the Mississippi River, the MKARNS ensures a 9-foot navigable channel for commercial barge traffic. The MKARNS is a 'high-use' waterway system that routinely sees more than 10 million tons of traffic a year." [I wonder why the towboat is pushing on a side barge instead of the center barge.] |
The photo above shows that the locks have the standard width of 110', but it must be longer than 600' to take 9 barges and a towboat. I include the scale in this satellite image because it implies the lock is 800' long.
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| Satellite |
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| dvids "Ozark Lake covers 10,600 acres of water area at Mean Sea Level (MSL) elevation 372.0 feet. A land area of 6,349 acres surrounds the lake and extends around the shoreline for a distance of 173 miles." |
The power plant was built with five 20mw slant-axis turbines. A slant-axis turbine is a recent design that "allows more generation to be packed into a smaller area." But they have proven to be a maintenance nightmare. Rehab work started in 2005 and several problems were encountered which stretched out the rehab work to 2021. One of the problems was construction---the 26' (8m) water passages were not "centered." "The solution, in this case, was to develop a massive reverse lathe/boring bar to go through the slow and exacting work of scraping out and milling the water passage. It was a huge task – and one that they found themselves having to do five more times." [issuu, unfortunately, the links for the three photos are broken.]
May 2025 Flood
Note the hydraulic jump.
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