Well I don't know about a week ago, but I was there the first weekend of April and then this past weekend and it is down significantly.
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That was a mis-type! I've done that twice now in the past couple of weeks!! I refer to the right side as upstream and the left side as downstream. As for the flow, I have been in there once when the flow reversed and was actually syphoning downstream, but from what I understand, that is a very rare occurrence. Usually both sides are flowing out into the pond.