Mystique theme – sidebar problem

your site has some validation errors, which could be the cause of the ‘dropped’ sidebar:
http://validator.w3.org/check?uri=http%3A%2F%2Fwww.lastormwater.info%2Fblog&charset=%28detect+automatically%29&doctype=Inline&group=0

try and fix them if you have time.

the sidebar drop, however, seems to be caused by a missing </div>
probably just after <!-- /primary content --> , before the call of the sidebar.

try to add this </div> to the right spot in index.php (?) and see if that helps.