MAMMOTH SPRING -- Cheryl Walsh and her family live near Spring River Oaks between Hardy and Mammoth Spring. Their home is located in a dip near the railroad tracks and it is not uncommon for them from time to time to hear and feel the rumble of a train.

"I was standing on my front porch early Saturday morning and I felt something. If I did feel it, I probably thought it was a train, but it could have been a earthquake," Walsh said.

The U.S. Geological Survey reported a small earthquake near Hardy and Mammoth Spring Aug. 23.

The Geological Survey said the 2.6-magnitude quake occurred at 7:06 a.m., about six miles from Hardy and nine miles from Mammoth Spring.

The New Madrid fault runs from southern Illinois to northeastern Arkansas, and produces hundreds of small quakes a year, most too weak to be noticed without scientific equipment.

No damage and no injuries were reported.