Ex-Army Corps consultant indicted in bribery case

Miranda, 50, of Spring, Texas, faces up to 15 years in prison and heavy fines at sentencing in October.

The investigation surrounding the Lake Cataouatche project has been the only case of criminal wrongdoing in levee work so far prosecuted by the Justice Department.

After Katrina hit the Louisiana and Mississippi coasts, flooded 80 percent of New Orleans and killed more than 1,600 people, Congress gave the corps billions of dollars to repair damaged levees and upgrade others.

The Lake Cataouatche levees protect an area of suburbs and small towns on the western side of the Mississippi River.