Table 7. Expected percentages of stream segments supporting high, marginal, and low quality thermal habitat (defined in Fig. 8) for 30- vs. 15-m average forested riparian buffer widths. The distribution of these streams across the trout stream network is shown in Fig. 11. Thermal habitat quality 30-m average riparian buffer width 15-m average riparian buffer width High 18.8% 0.7% Marginal 44.4% 8.1% Low 36.8% 91.2%