L 1ST OF FIGURES 



Number Page 



1 Location of the 25 gravel removal study 



sites in Alaska 13 



2 Typical Seward Peninsula terrain 37 



3 Arctic Coastal Plain wetlands 43 



4 Northern portion of the Arctic Foothills ...... 44 



5 Typical view of the White Hills section 



of the Arctic Foothi I Is 44 



6 M. F. Koyukuk River valley looking upstream .... 52 



7 Typical terrain of the Kokr i ne-Hodzana Highlands . . 53 



8 Typical terrain in the Yukon-Tanana Upland Section . 59 



9 G I ac i of I uv i a I deposits in Dry Creek floodplain ... 60 



10 Typical view of Alaska Range section 61 



11 Aerial photograph showing the two gravel 

 removal locations at Sinuk River considered 



separately in the hydrology/hydraulics analysis . . 75 



12 Aerial photograph of Washington Creek showing 



the upper and lower gravel removal areas 77 



13 Aerial photograph of Oregon Creek showing 



the upper and lower gravel removal areas 78 



14 Aerial photograph of Aufeis Creek showing 



upper and lower gravel removal areas 79 



15 Aerial photograph of Middle Fork Koyukuk River- 

 Upstream showing upper and lower gravel removal 



areas 80 



16 Schematic diagram of the plan view and cross 



section of a typical braided river 83 



17 Maximum depths and corresponding top widths of 

 undisturbed major, side, and high-water chan- 

 nels at four braided study sites 84 



