Collections were made by means of: (1) a four-foot net of nylon screen;
(2) a 10x4-foot "common-sense" woven seine with 1/4-inch mesh; (3) a
15x4-foot knotted mesh seine; (4) a 20x5-foot 1/4-inch mesh seine; (5)
pole and line (natural and artificial baits). At most stations the
four-foot, ten-foot, and twenty-foot seines were used; however, the
equipment that was used varied according to the size of pool, number of
obstructions, nature of bottom, amount of flow, and type of streambank.
Usually several hours were spent at each station and several stations
were revisited from time to time. Percentages noted in the List of
Species represent the relative number taken in the first five
seine-hauls at each station.