9389

• UCREFRP Catalog Number: 9389
• Author: Birchell, G. J., K. Chrisopherson, C. Crosby, T. Crowl, J. Gourley, M. Townsend, S. Goeking, T. Modde, M. Fuller and P. Nelson.
• Title: The Levee Removal Project
• USFW Year: 2002.
• USFW - Doc Type: Assessment of Floodplain Habitat Restoration in the Middle Green River.
• Copyright Material: NO

Figure 3.1. Mean daily discharge (cfs) for 1999 as recorded at Jensen gauging
station, Green River, Utah. Note the period of connection between the
river and floodplain depressions .............................3.18
Figure 3.2. Mean water column light availability in the river .................3.19
Figure 3.3. Photic zone (1 % surface light intensity) versus mean depth in the river
during the study period .....................................3.20
Figure 3.4. Dissolved nitrogen and phosphorus in the river for the sampling interval,
1999 ...................................................3.21
Figure 3.5. Nutrient bioassay results by light treatment for April, May, and June, 1999.
Error bars indicate standard errors for average chlorophyll a
concentrations (n=3) . .....................................3.22
Figure 3.6. Mean chlorophyll a results for day 4 from April, May, and June for the
high, medium, and low light treatments .. ......................3.23
Figure 3.7. Vertical profiles of NPP in the river pre-, during, and post-flood. Average
river depth for each flood period is equal to the Y-axis... .........3.24
Figure 4.1. Temperature in the river and floodplain habitats over the sampling
period .................................................4.22
Figure 4.2. Mean water column light availability in the floodplain and river. .....4.23
Figure 4.3. Photic zone (1 % surface light intensity} versus mean depth in the main
channel (bottom) and floodplain depressions (top) . ..............4.24
Figure 4.4. Dissolved nitrogen and phosphorous in the river and floodplain
depressions for the sampling interval, 1999 ....................4.25
Figure 4.5. Chlorophyll a concentrations in the river (bottom) and floodplain (top)
habitats over the sampling interval ............................4.26
Figure 4.6. Net Primary Productivity in the river and floodplain habitats over the
sampling interval .........................................4.27
Figure 4.7. A comparison of Net Primary Productivity expanded to surface area in the
river and floodplain depressions . ............................4.28
Figure 4.8. Chlorophyll a transport in the river in comparison to chlorophyll a transport
in between the floodplain depressions and the river ............... 4.29
xxiii