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<br />METHODS <br />During 1988, we conducted four trips to survey the <br />ichthyofauna of the San Juan River in New Mexico. On three of <br />these trips (20-27 March, 28 April-5 May, and 23-27 October) <br />electrofishing was the primary means of sampling. The March trip <br />was included mainly to survey for razorback suckers, which may <br />have migrated upstream to spawn. A seining survey was conducted <br />between 28 July and 1 August. During the first two trips (March <br />and April-May), we surveyed from the Hogback (River Mile 179) to <br />Four Corners (River Mile 138), while the last two trips <br />originated at Shiprock (River Mile 167) and terminated at Four <br />Corners (River Mile 138). The designated five mile study reaches <br />used in 1987 were retained. However, we were given more freedom <br />to select which areas were to be sampled within those reaches in <br />1988. <br />As in 1987, inflatable rafts were used in 1988 to transport <br />personnel and equipment downstream. A 5.5 m raft was equipped <br />with electrofishing gear, a live well, and a 10-horsepower <br />outboard motor. We had hoped that the motor would give us the <br />flexibility to move upstream and in-and-out of embayments and <br />side channels. However, during our first 1988 trip, we <br />discovered that this was not possible and resumed using oars to <br />control the rafts. There were a few minor modifications made in <br />1988 over our 1987 electrofishing design, primarily fine-tuning <br />to increase efficiency of current output. <br />6