U.S. Dept Commerce/NOAA/NMFS/NWFSC/Publications
Figure 16
Figure 16. Total releases of hatchery steelhead into rivers occupied by steelhead ESU 13-Middle Columbia River and 14-Upper Columbia River, for the period 1980-94. Size of circles represents the magnitude of releases; shading indicates proportion of releases comprised of non-native stocks (Howell et al. 1985, Shelldrake 1993, ODFW 1994c, WDFW 1994a).
Figure 17
Figure 17. Total releases of hatchery steelhead into rivers occupied by steelhead ESUs 15- Snake River Basin, for the period 1980-94. Size of circles represents the magnitude of releases; shading indicates proportion of releases comprised of non-native stocks (Howell et al. 1985, Hutchison 1993, Shelldrake 1993, ODFW 1994c, WDFW 1994a). All data are for summer steelhead.
Figure 31
Figure 31. Recent total escapement for populations in steelhead ESUs 13-Middle Columbia River, 14-Upper Columbia River, and 15- Snake River Basin. Where no total estimate is available, natural escapement is used. All data are for summer steelhead (see Appendix E for details).
Figure 32
Figure 32. Trends (percent annual change) in total escapement for populations in steelhead ESUs 13-Middle Columbia River, 14-Upper Columbia River, and 15- Snake River Basin. All data are for summer steelhead (see Appendix E for details).