Fig. 4. Percentage urban land cover (A) and mean vegetated buffer width (B) in each of the four watersheds in this study. Student t-tests were performed on pooled data from each typology, i.e., sites 3.1 and 3.4 together vs. sites 3.7 and 4.2 together, to test H₀ of no difference between typological means. The dark bars indicate that typological differences between watersheds with small-town typologies and those with suburban typologies were significant.