BNSF Railway Co. reported a 3.1% decline in coal revenue in the second quarter to $883 million from $911 million in the year-ago period.

In the first half, the company generated $1.75 billion in coal revenue, a decrease from $1.86 billion in the first half of 2018, according to a Form 10-Q. The railroad was one of the most affected by flooding earlier this year, which damaged infrastructure and delayed trains in the Midwest.

The railroad reported a 5% decrease in overall unit volume during the first half due to severe winter weather and flooding, which also caused coal volumes to decrease.

BNSF reported second-quarter net income of $1.34 billion, an increase from $1.31 billion in the year-ago period.