Choose a Hydrograph . . . Snake River (at Flagg Ranch) Snake River (Below Jackson Lake Reservoir) Buffalo Fork (at Moran) Pacific Creek Snake River (at Moose) Snake River (near Jackson) Snake River (near Alpine) Salt River (near Etna) Teton River (near Driggs) Green River (at Warren Bridge) Yellowstone River (at Fishing Bridge) Lamer River (near Tower Falls) Madison River (near West Yellowstone) Gardner River (near Mammoth) Gibbon River (at Madison Junction) Hebgen Reservoir Henry's Fork River (near Lake) Henry's Fork River (near Island Park)