Figure 4. Examples of debris fan morphology recognized in this study. Surficial map units are as follows: Hch = Late Holocene channel alluvium, Hf = historic fan deposits (at grade), Qf = Quaternary fan deposits (at grade), Qf1 = Quaternary fan-terrace deposits (2-5 m surface), Qf2 = Quaternary fan-terrace (4-6 m), Qf3 = Quaternary fan-terrace (6-8 m), Qf4 = Quaternary fan-terrace (8-10 m), Qf5 = Quaternary fan-terrace (>10 - 15 m). Areas are listed in sq. km. Other codes include: F = Fernow, NF = North Fork, LR = Little River; Trib. Jct. Type = tributary junction according to Strahler stream order (e.g., 1-3 = 1st order-3rd order tributary junction).
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