Earthquake shakes the small town of Isleton, raises concerns about levees protecting town

A town that was built under the level of the Sacramento River got a wake-up call from Mother Nature Wednesday morning when a moderate, but highly noticeable earthquake struck right after stores opened.  Residents of Isleton, a small town with 800 residents about 60 miles northeast of Oakland, were struck hardest. Reports for Isleton, which sits below a levee on the Sacramento River, originally identified the quake as a magnitude 5.7, but it was quickly revised down to a 4.1, according to the United States Geological Survey.