8254 - Laserfiche WebLink

Home Browse Search

~_ L i LIST OF FIGURES Figure 1. Location map of the study area ................. • • • . • • • • • • • • • • • • • 8 Figure 2. Graph showing the longitudinal profile of Duchesne River........... 10 Figure 3. Graphs showing the hydrology of the Duchesne River at two U.S. Geological Survey's gaging station .............................. 14 Figure 4. Graphs showing the annual flood series recurrence data of the Duchesne River ............................................ 15 Figure 5. Representation of an 1882 platt map from the General Land Office Survey, showing a reach of the Duchesne River upstream from Myton ............................................... 18 Figure 6. Diagram showing the method used in converting historic Platt map channel widths to widths perpendicular to the channel...... 20 Figure 7. Representation of a cross section of the Duchesne River identifying the geomorphic surfaces measured in 1995 field width measurements .................................... 20 Figure 8. Topographic maps of the study area showing a comparison of channel planform change of the Duchesne River from the topographic base maps of the 1960s with the Platt maps of 1875 to 1903 and 1936 aerial photographs ..................... 26 Figure 9. Aerial photographs of the Duchesne River in 1936 at a discharge of 9.2 m3/s ....................................... 31 Figure 10. Graphs comparing channel width measurements of four geomorphic surfaces of the Duchesne River in 1995 to historic widths from 1875 to 1903 ............................ 32 Figure 11. Graphs showing the longitudinal profile of the four geomorphic surfaces from 1995 field surveys at two U.S.G.S. gaging stations on the Duchesne River ................................ 34 Figure 12. Graphs showing channel change of the Duchesne River at Myton at the cableway ............................................. 36 Figure 13. Graphs showing channel morphology changes of the Duchesne River at Myton at a discharge less than 11 m3/s .................. 38 Figure 14. Graph showing channel width change of the Duchesne River near Randlett since 1942, at a discharge from 70 to 100 m3/s...... 39