Great Lakes steel production dropped to 657,000 tons last week, down by 1.35 percent from 666,000 tons of output the previous week.
So far this year, U.S. steelmakers have produced 22.5 million tons of steel, about 4.1 percent more than they did during the same period in 2016. Steel mills have been running at a capacity of 73.2 percent so far this year, up from 71.3 percent through the same time last year.
Domestic steelmakers used about 71.4 percent of their steelmaking capacity in the week that ended April 1, down from 72.8 percent the previous week, according to the American Iron and Steel Institute.
It was also down from 72.1 percent during the same time period in 2016.
Overall U.S. steel output fell by 33,000 tons last week to 1.69 million tons, a 1.91 percent decrease, according to the American Iron and Steel Institute.
Output in the Southern District, the second largest steel-producing region, which spans mini-mills across the South, dropped to 579,000 tons last week, down from 594,000 tons the previous week.