We successfully negotiated Knapps on Saturday the 12th and Monday the 15th. Both were at mid-tide. Our draft is 5 and we didn't get any reading below 6' anywhere. The channel under the drawbridge was about 9-10 ft as I recall. The approaches are the tricky part. On the Bay side keep off the green and stay close to the reds. On the Choptank side stay off the red and far away (40-50') from the greens. After going into the Choptank you also need to continue away from the marks before turning.