“Where’s the shoe department at?”
“Did she tell you where the meeting is at?”
“How can I find where my evaluation is at?”
When you use “where” in a sentence, you are referring to location. Therefore, sticking an “at” into the sentence is redundant. All you need is:
“Where is the shoe department?”
“Did she tell you where the meeting is?”
“Where can I find my evaluation?”
I’m wishing for just one day when I hear the “at” tag fewer than 10 times. Is that asking too much?