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<br />24. Graph comparing the pre-dam flow-duration curve computed from instantaneous discharges
<br />with the pre-dam flow-duration curve computed from daily mean discharges"".""""""""".",,,,,,,,,,,,,,,,, 45
<br />25, 26, Graphs showing:
<br />25, The exceedance curves of the daily range in the discharge of the Colorado River at
<br />
<br />Lees Ferry, "....,."...,,,,,. """'" ""., ".,,, "'" "",," """." "". ""'..",,,..,,, ".,'"..,'"...""...."...",..".... ".,.............. 46
<br />26, The pre-dam monthly median, minimum, and maximum daily ranges in the discharge
<br />of the Colorado River at Lees Ferry ""."''''''"."''''''''''".""."""."""."..."""""""..."""""".""",,,,,"".. 47
<br />27, Probability graph showing the pre-dam daily range in the discharge of the Colorado River at
<br />
<br />Lees Ferry ...."....."......,......"......,......,..",,,....,,,....,."...."....."..,,,,,....,,,..,,,,,,,,,,,,.,,,,,..,,,,,...,,,....".................".. 47
<br />28-30. Graphs showing:
<br />28. An example of large dam-induced daily fluctuations in the discharge of the Colorado
<br />
<br />River at Lees Ferry.",...."'....."'...."'...."....."'.....".....".....,.....,.. "...... "..... ". ""'" ",..."'",."",...."....."..... 48
<br />29, Flow-duration curves for the Colorado River at Lees Ferry from cach of the four post-dam
<br />decades and the entire pre-dam period".".....".."".."."..".".."""""""."""""""""..""",,,,,,,..,,,,,,,,""" 48
<br />30, The effects of dam operations on the monthly median, minimum, and maximum discharges
<br />of the Colorado River at Lees Ferry .""".""".""".""".""""""..,,,,,,,,,,,,,,,,,,.,,,,,,..,,,,,,,,,,,,..,,,,..,,,,,,,,,,,, 49
<br />3 I, Graph comparing the post-dam flow-duration CUlve computed from instantaneous discharges
<br />with the post-dam flow-duration curve computed ti'Om daily mean discharges """""."""""",.."",,,.,,..,,. 50
<br />32, 33. Graphs showing:
<br />32. The exceedance curves of the daily range in the discharge of the Colorado River at
<br />Lees Ferry for the four post-dam decades and the entire pre-dam period ofrecord"""""""""""..." 50
<br />33. The effects of dam operations on the montWy median, minimum, and maximum daily
<br />ranges in the discharge ofthe Colorado River at Lees Ferry "..""""..".""..".."".""""""."""..."".",, 5 I
<br />34. Probability graph showing the daily range in the discharge of the Colorado River at Lees Ferry
<br />during the pre- and post-dam periods of record ".."....."".."""..".""..""".""""""""""""""..""""".."."",, 5 I
<br />35-38. Graphs showing:
<br />35, The minimum and maximum discharges of the Colorado River at Lees Ferry each
<br />month from May 1921 through September 2000 """".""""""",,,.,,,,,,,.,...,,,,...,,,,...,,,,,,,,,,,,,,,,,,,,,,.,,,,. 52
<br />36. The partial-duration and annual !lood-frequency analyses for the pre-dam Colorado
<br />
<br />River at Lees Ferry""" .."... ..".""".", "."".,.",' ""."...,'"....",..,.",....",..,."....."......,........" ". "". ""."",,,,, 53
<br />37, The effect of dam operations on flood frequency on the Colorado River at Lees Ferry "..".""".".." 55
<br />38. The duration of periods of sustained discharge over 18,500 cubic feet per second """"""""""""". 56
<br />Bl-B7, Photographs showing:
<br />BI. The repairs to the Upper Cableway and the high-water marks from the 1921 !lood """",,,,,.,..""..,, 69
<br />B2. The Dugway Gage and the high-water mark from the 1921 !lood"""."""""".".."""""."""."""""" 72
<br />B3. The Number 4 Gage and the high-water marks from the 1921 !lood """"""""'''''''''''''''".",,,.,,,,,,,,, 74
<br />
<br />B4. The Number I Gage".."",,,.,,,,,..,,,,,,.,,,,,,...,,,,...,,,,....,,,.....,.......,"".,.""..".",,,,,,,..,,,,,,..,,,,.,.,,,,...,.,...,.". 77
<br />B5. The right- to left-bank view of the Upper Cableway and the Cable Gage on the
<br />
<br />left bank ,,,. "."""., ,,,,,.,.. """,,, "',..""',.".",.."",...""...""...."....."....",....",....".....,,. "".... "",,,'.., ".""."", 78
<br />B6, The March 1933 downstream view of the Lees Ferry Gage and the high level of the rock
<br />fill placed behind the gage in 1929-30 "..""""."""""""."""."""",,,.,,,,,,,,,,,,,.,,,,,,,,..,,,,,,,,,,.,,,,,,.,,,,,,,, 80
<br />B7. The November 13, 2000, downstream view of the remnants of the Lower Staff Gage"""".."."""" 82
<br />Fl, GI. Graphs showing:
<br />Fl. The monthly !low-duration curves for the pre- and post-dam periods of record for
<br />the Colorado River at Lees Ferry ". ",,"',,"" ",,"'"'' ".,,, " " " ". " " ". ".. " " " " ". " " " " " " " ''''''',,'' ".. ". " ..,,".. I I I
<br />G I, The monthly exceedance curves of the daily range in the discharge of the Colorado
<br />River at Lees Ferry for the pre- and post-dam periods""""".""..""""""",,,,,,,,,.,,,,,,,,,,..,,,,,,,,,,,,,,,,,,,, 1 17
<br />
<br />Contents V
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<br />
<br />02252
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