Since you are continuing to let it suffer in the slow inadequate trap (and obviously enjoying it's suffering)....I suggest you immediately shoot it in the head or smash it with a shovel. Put the thing out of it's misery that you caused it.
Animal control came out to the house this afternoon and took it. They said they will take it to a vet for a check up and determine if it is a protected species of rodent. Apparantly the trap did not hurt it and the fact that I gave it food and water - and did not shoot it - means they will not press charges against me if it does turn out to be protected.
Whew, was that good news to hear.