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Jenkins (1982) calculated the regression equation using mean. depth (m), rather than outlet depth: Loglo harvest = 3.918 - 0.017 (growing season) - 1.425 (Loglo mean,, depth} N=35 R2 = 0.53 These regression equations are based on reservoirs with growing seasons > 100 days and outlets between 0.3 m (surface) and 42.7 m deep (Aggus, unpubl. data) and should not be applied to reservoirs that do not met these criteria. It -should also be noted that northern pike populations in many of these reservoirs were supported by stocking, so reproductive requirements may not be accounted for in the above equations. REFERENCES Adelman, I. R., and L. L. Smith. 1970a. Effect of hydrogen sulfide on northern pike eggs and sac fry. Trans. Am. Fish. Soc. 99:501-509. Adelman, I. R., and L. L. Smith. 1970b. Effect of oxygen on growth and food conversion efficiency of northern pike. Prog. Fish-Cult. 32:93-96. Aggus, L. R. Unpublished data. U.S.D.I. Fish Wildl. Serv., National Reservoir ® Research Frogram, Fayetteville, AR. Aggus, L. R., and W. M. Bivin. (in press). Habitat suitability index models: regression models based on harvest of coolwater and Coldwater fishes in reservoirs. U.S. Dept. Int., Fish Wildl. Serv. FWS/OBS-82/10.25. Alt, K. T. 1968. Sport fish investigations of Alaska: sheefish and pike investigations of the upper Yukon and Kuskokwim drainages with emphasis on Minto Flats drainages, 1967-1968. Dingell-Johnson Proj. F-S-R-9 Prog. Rep. 17-B. Alaska Dept. Fish Game. 16 pp. Alt, K. T. 1969. Sport fish investigations of Alaska: sheefish and pike investigations of the Upper Yukon and Kuskokwim drainages with emphasis on Minto Flats drainages. Dingell-Johnson Proj. F-9-1 Rep. 17-B. Alaska Dept. Fish Game. 16 pp. Ash, G. R., N. R. Chymko, and D. N. Gallup. 1974. Fish kill due to "cold shock" in Lake Wabamun, Alberta. J. Fish. Res. Board Can. 31:1822-1824. Barica, J. 1975. Summerkill risk in prairie ponds and possibilities of its prediction. J. Fish. Res. Board Can. 32:1283-1288. 29