7423

• UCREFRP Catalog Number: 7423
• Author: U.S. Bureau of Reclamation.
• Title: Glen Canyon Environmental Studies Draft Report, September 1987.
• USFW Year: 1987.
• USFW - Doc Type: Washington, D.C.
• Copyright Material: NO

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LIST OF FIGURES

Figure A-I. Reaches within the study area . . . . A-6

Figure A-2. Sand deposits and sediment-dependent
resources in the vicinity of a typical
recirculation zone . . . . . . . . . A-7

Figure A-3. Flow patterns at a relatively high
discharge in a typical recirculation
zone are composed of primary and
secondary eddies . . . . . . . . . . A-8

Figure A-4. Separation deposits downstream from
Badger Creek Rapid (River Mile 7.9) . A-I0

Figure A-50 Downstream view at Eminence Break
Camp (River Mile 44.2) at a discharge
of 5,000 cfs (October 1985) . . . . . A-II

Figure A-6. Hydraulic map of House Rock Rapid . . A-12

Figure A-7. Flows during the study period (June
1983 to January 1986) . . . . . . . . A-27

Figure A-8. A single debris flow event down a
steep tributary valley may be composed
of several pulses of debris and hyper-
concentrated flow within a short
period of time . . . . . . . . . . . A-29

Figure A-9. Bed elevation at the USGS gaging
station near Grand Canyon (River
Mile 87) . . . . . . . . . . . . A-31

Figure A-I0. A debris flow in December 1966 greatly
increased the constriction of the
channel at Crystal Creek
(River Mile 98.1) . . . . . . . . . . A-39

Figure A-II. Channel constrictions caused by debris
flows are modified and widened by main
channel flows . . . . . . . . . . . . A-40

Figure A-12. Topographic changes along a single
profile line bisecting a separation
deposit at Eighteen Mile Wash (River
Mile 18) from 1975 to 1986 . . . . . A-46

Figure A-13. Response of main channel and recircul-
ation zone bed to fluctuating flows . A-48