Initial Analyses of Eagle River Flats Hydrology and Sedimentology, Fort Richardson, Alaska
GENERAL ENVIRONMENTAL CONDITIONS
PREVIOUS STUDIES
STUDY AREA AND METHODS
Sedimentation and erosion
Figure 7. Sedimentation station in a pond site
Gully erosion and recession - CR95_050015
Figure 10. Location of surveyed longitudinal cross sections of gullies
Water quality parameters - CR95_050017
PROCESS OBSERVATIONS
PROCESS OBSERVATIONS-continue
Figure 13. Aerial photographs of ERF
Figure 13. Continued - CR95_050021
Figure 13. Continued - CR95_050022
Figure 14. Drainage pattern analysis of 1993 aerial photograph in the study area east of Eagle River
GLACIER RUNOFF AND SEDIMENT YIELD
Table 3. Summer depositional processes
Figure 17. Water elevations at three sites during a period of flooding cycles
WATER QUALITY PARAMETERS AND TIDAL FLATS HYDROLOGY - CR95_050027
Figure 19. Variation of water quality parameters, Bread Truck drainage site, 18 August
Figure 20. Variation of water quality parameters, 2021 August
Figure 21. Variation of water quality parameters, 1819 September
Table 4. Temperature and salinity of Eagle River and Knik Arm
Figure 22. Total suspended sediment (TSS) concentrations measured at gully sites during August and September flooding cycles
SEDIMENT TRANSPORT
Figure 24. Optical backscatter (OBS) measurements at gully sites during August and September flooding cycles
Figure 25. Comparison of OBS and TSS measurements at Parachute Pond
SEDIMENT SOURCES
Figure 28. Places where gully cross sections and peak flow were established
EROSION AND RECESSION RATES
Table 6. Headwall recession rates in 1992 and 1993
SEDIMENTATION RATES
Table 7. Gross sedimentation rates in 1992 and 1993
SYSTEM DYNAMICS AND REMEDIATION
LITERATURE CITED-continue - CR95_050043
LITERATURE CITED-continue - CR95_050044
APPENDIX A: RECESSION RATE SUMMARY
APPENDIX A: RECESSION RATE SUMMARY-continue
Report Documentation Page - CR95_050047
CR95_05
GENERAL ENVIRONMENTAL CONDITIONS
PREVIOUS STUDIES
STUDY AREA AND METHODS
Sedimentation and erosion
Figure 7. Sedimentation station in a pond site
Gully erosion and recession - CR95_050015
Figure 10. Location of surveyed longitudinal cross sections of gullies
Water quality parameters - CR95_050017
PROCESS OBSERVATIONS
PROCESS OBSERVATIONS-continue
Figure 13. Aerial photographs of ERF
Figure 13. Continued - CR95_050021
Figure 13. Continued - CR95_050022
Figure 14. Drainage pattern analysis of 1993 aerial photograph in the study area east of Eagle River
GLACIER RUNOFF AND SEDIMENT YIELD
Table 3. Summer depositional processes
Figure 17. Water elevations at three sites during a period of flooding cycles
WATER QUALITY PARAMETERS AND TIDAL FLATS HYDROLOGY - CR95_050027
Figure 19. Variation of water quality parameters, Bread Truck drainage site, 18 August
Figure 20. Variation of water quality parameters, 2021 August
Figure 21. Variation of water quality parameters, 1819 September
Table 4. Temperature and salinity of Eagle River and Knik Arm
Figure 22. Total suspended sediment (TSS) concentrations measured at gully sites during August and September flooding cycles
SEDIMENT TRANSPORT
Figure 24. Optical backscatter (OBS) measurements at gully sites during August and September flooding cycles
Figure 25. Comparison of OBS and TSS measurements at Parachute Pond
SEDIMENT SOURCES
Figure 28. Places where gully cross sections and peak flow were established
EROSION AND RECESSION RATES
Table 6. Headwall recession rates in 1992 and 1993
SEDIMENTATION RATES
Table 7. Gross sedimentation rates in 1992 and 1993
SYSTEM DYNAMICS AND REMEDIATION
LITERATURE CITED-continue - CR95_050043
LITERATURE CITED-continue - CR95_050044
APPENDIX A: RECESSION RATE SUMMARY
APPENDIX A: RECESSION RATE SUMMARY-continue
Report Documentation Page - CR95_050047
CR95_05
