GSL Slip Renters. This alert has 2 parts to it. PART 1 If you have a draft of over 4 feet you will now start experiencing problems getting in and out of the marina. PART 2 On days where we have a strong enough south breeze in either Tooele or Salt Lake Valley it is possible that the lake level in the marina will drop enough to trap vessels in the marina that have a 4' draft or less. Pay close attention to lake levels before departing the marina. If the lake level is 4193.7 or lower it is advised you do not try to go out. Dave Shearer Harbor Master Great Salt Lake State Marina Antelope Island State Marina 801-209-9142