Physical System Dynamics and White Phosphorus Fate and Transport, 1994, Eagle River Flats, Fort Richardson, Alaska
Figure 2. General distribution of ponds and the primary drainage system
BACKGROUND AND PREVIOUS STUDIES
Figure 4. 1994 aerial photographs of ERF
Table 1. Summer erosional processes
Table 6. Winter depositional processes
Figure 5. Aerial photographs of ERF
Figure 5. Continued - CR96_090018
Figure 5. Continued - CR96_090019
Expanding the above discussion
STUDY OBJECTIVES
Figure 7. Transect locations
Figure 9. Paint layer depth within block of sediment is measured to define sedimentation rates
Figure 10. Pond sedimentation stations
Gully erosion and recession - CR96_090025
Figure 14. Examples of gully erosion sites. Line stakes are established along a line approximately parallel to the gully scarp
Water quality parameters - CR96_090027
Table 8. Specifications of sensors used in water quality parameter measurements
Figure 17. Active hydrostations during the 1994 season
Figure 18. Schematic of hydrostation showing layout
WP transport sampling
TIDAL HYDROLOGY AND INUNDATION
Table 9. Extent of data record for various measurement parameters
Figure 22. Typical high-tide curve showing period of sedimentation
Figure 28. Peak water elevation vs. runoff time at Bread Truck Gully, June-November 1994
Figure 30. Delay in peak high tide from Anchorage to ERF sites, June through November
WATER QUALITY PARAMETERS AND TIDAL FLATS HYDROLOGY - CR96_090037
Source waters
Central sites
Figure 33. Hydrostation record at Spring Gully
SEDIMENT TRANSPORT AND SEDIMENT SOURCES - CR96_090041
Figure 40. Coastal vs. river TSS measurements
SEDIMENTATION - CR96_090043
Figure 43. Net seasonal sedimentation rates at sites sprayed with paint in August 1993
Table 13. Comparison of predicted and measured number of flooding events reaching critical heights during summer and fall 1994
EROSION DYNAMICS
Driving mechanism and system response
Table 14. Summary of gully and river erosion monitoring
Figure 50. Gully scarp locations for measuring erosion rates
Figure 50. Continued - CR96_090050
Figure 50. Continued - CR96_090051
Figure 51. River bank erosion at the River Section-North
Table 15. Preliminary estimates of delay before natural pond drainage
Figure 55. Sites of observed or suspected riverbank erosion
Implications for remediation methods
GULLY HYDRAULICS AND DISCHARGE
Gully discharge
Figure 60. Comparison of peak velocities at the Spring, Bread Truck and Parachute gullies
WHITE PHOSPHORUS EROSION AND TRANSPORT
Figure 62. Location maps for WP
Figure 63. Examples of freeze-on to pond ice at ERF
Figure 64. Stranded ice blocks on the southern edge of In-between Gully
BATHYMETRIC MONITORING AND WHITE PHOSPHORUS DEPOSITION
GROUND WATER INFORMATION
Figure 67. Bathymetric profiles. Refer to Figure 20 for profile locations
Figure 69. Plots of piezometer cluster data
CONCLUSIONS: SYSTEM DYNAMICS AND REMEDIATION
LITERATURE CITED - CR96_090068
LITERATURE CITED-continue - CR96_090069
APPENDIX A: TSS ANALYSES
APPENDIX B: SEASONAL SUMMARY OF EROSION RATES
APPENDIX C: TIDAL INUNDATION DATA FOR BREAD TRUCK, PARACHUTE AND SPRING GULLIES
APPENDIX D: PRELIMINARY ESTIMATES OF GULLY WATER DISCHARGE AND SEDIMENT FLUX
Report Documentation Page - CR96_090074
CR96_09
Figure 2. General distribution of ponds and the primary drainage system
BACKGROUND AND PREVIOUS STUDIES
Figure 4. 1994 aerial photographs of ERF
Table 1. Summer erosional processes
Table 6. Winter depositional processes
Figure 5. Aerial photographs of ERF
Figure 5. Continued - CR96_090018
Figure 5. Continued - CR96_090019
Expanding the above discussion
STUDY OBJECTIVES
Figure 7. Transect locations
Figure 9. Paint layer depth within block of sediment is measured to define sedimentation rates
Figure 10. Pond sedimentation stations
Gully erosion and recession - CR96_090025
Figure 14. Examples of gully erosion sites. Line stakes are established along a line approximately parallel to the gully scarp
Water quality parameters - CR96_090027
Table 8. Specifications of sensors used in water quality parameter measurements
Figure 17. Active hydrostations during the 1994 season
Figure 18. Schematic of hydrostation showing layout
WP transport sampling
TIDAL HYDROLOGY AND INUNDATION
Table 9. Extent of data record for various measurement parameters
Figure 22. Typical high-tide curve showing period of sedimentation
Figure 28. Peak water elevation vs. runoff time at Bread Truck Gully, June-November 1994
Figure 30. Delay in peak high tide from Anchorage to ERF sites, June through November
WATER QUALITY PARAMETERS AND TIDAL FLATS HYDROLOGY - CR96_090037
Source waters
Central sites
Figure 33. Hydrostation record at Spring Gully
SEDIMENT TRANSPORT AND SEDIMENT SOURCES - CR96_090041
Figure 40. Coastal vs. river TSS measurements
SEDIMENTATION - CR96_090043
Figure 43. Net seasonal sedimentation rates at sites sprayed with paint in August 1993
Table 13. Comparison of predicted and measured number of flooding events reaching critical heights during summer and fall 1994
EROSION DYNAMICS
Driving mechanism and system response
Table 14. Summary of gully and river erosion monitoring
Figure 50. Gully scarp locations for measuring erosion rates
Figure 50. Continued - CR96_090050
Figure 50. Continued - CR96_090051
Figure 51. River bank erosion at the River Section-North
Table 15. Preliminary estimates of delay before natural pond drainage
Figure 55. Sites of observed or suspected riverbank erosion
Implications for remediation methods
GULLY HYDRAULICS AND DISCHARGE
Gully discharge
Figure 60. Comparison of peak velocities at the Spring, Bread Truck and Parachute gullies
WHITE PHOSPHORUS EROSION AND TRANSPORT
Figure 62. Location maps for WP
Figure 63. Examples of freeze-on to pond ice at ERF
Figure 64. Stranded ice blocks on the southern edge of In-between Gully
BATHYMETRIC MONITORING AND WHITE PHOSPHORUS DEPOSITION
GROUND WATER INFORMATION
Figure 67. Bathymetric profiles. Refer to Figure 20 for profile locations
Figure 69. Plots of piezometer cluster data
CONCLUSIONS: SYSTEM DYNAMICS AND REMEDIATION
LITERATURE CITED - CR96_090068
LITERATURE CITED-continue - CR96_090069
APPENDIX A: TSS ANALYSES
APPENDIX B: SEASONAL SUMMARY OF EROSION RATES
APPENDIX C: TIDAL INUNDATION DATA FOR BREAD TRUCK, PARACHUTE AND SPRING GULLIES
APPENDIX D: PRELIMINARY ESTIMATES OF GULLY WATER DISCHARGE AND SEDIMENT FLUX
Report Documentation Page - CR96_090074
CR96_09
