From 2 July through 24 August 1993, the chinook (Oncorhynchus tshawytscha) and coho salmon (Oncorhynchus kisutch) recreational fisheries on the Alagnak River, Alaska, were surveyed using a self-weighted study design. Anglers were interviewed for catch and harvest information, and catch and harvest characteristics related to gear use, and use of guide services. Age, length, weight, and species data were collected from fish harvested by anglers. A total of 2,204 interviews (1,270 from completed angler trips) were conducted during the study. Of the 936 completed-trip interviews conducted during the 2 July through 3 August chinook salmon fishery, 63% (SE = 2) of the anglers caught and 41% (SE = 2) harvested one or more chinook salmon. Seventy-six percent (SE = 1) of the total chinook salmon harvested were the first fish harvested by anglers. Seventy-three percent (SE = 1) of anglers used spin gear only. These anglers accounted for the majority of the catch and harvest of chinook salmon (89%, SE = 1; and 91%, SE = 1, respectively). During the 25 July through 24 August coho salmon fishery, 524 completed-trip interviews were conducted; 54% of anglers (SE = 2) caught and 31% (SE = 2) harvested one or more coho salmon. Twenty-nine percent (SE = 3) of anglers harvested one or two coho salmon. Fifty-nine percent (SE = 3) of all coho salmon harvested were the first fish among anglers' harvests. In the coho salmon fishery, spin gear was used in 47% (SE = 1) of the catch and 58% (SE = 3) of the harvest. Most anglers were guided in both fisheries. Age, weight and length data were collected from 319 chinook salmon and 164 coho salmon. Estimated mean length of harvested chinook salmon was 865 millimeters (SE = 8), mean weight was 12.2 kilograms (SE = 0.3); 51% (SE = 3) were age-1.4, and 65% (SE = 3) were males. Estimated mean length of coho salmon harvested in the fishery was 585 millimeters (SE = 3), mean weight was 3.6 kilograms (SE = 0.1); 75% (SE = 5) were age-2.1, and 74% (SE = 4) were males.