I have a drain in my basement that I think is a drain but it has a 2 lip on it above floor level. I have been draining my dehumidifier into it for about a year now. Over the last few weeks we have had a lot of rain and now it is just about full of water. Can someone tell me what kind of drain this is? I have looked at drain pics online and I cant seem to find one that matches this. Also is it okay to drain the dehumidifier into it? Thank you.