Cause of the Donna Creek Slope Failure - A Technical Opinion


Author or Ministry Contact: James Schwab
Published: August, 1997.


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Main document (PDF 2491KB)

Appendix 1 Stratigraphy, and Texture (PDF 2590KB)

Appendix 2 Photographs (PDF 3306KB)

Appendix 3 Air Photographs (PDF 8819KB)

Appendix 4 Infiltration (PDF 778KB)

Appendix 5 Integrated Mapping Technologies, Topographic Maps

  • Map 1 - Year of Photography 1971 - scale 1:3500 (PDF 2758KB)

  • Map 2 - Year of Photography 1989 - scale 1:3500 (PDF 2732KB)

  • Map 3 - Year of Photography 1994 - scale 1:3500 (PDF 3016KB)

Appendix 6 Integrated Mapping Technologies, Photo Mosaic

  • Map 1 - Year of Photography 1971 - scale 1:3500 (PDF 5002KB)

  • Map 2 - Year of Photography 1989 - scale 1:3500 (PDF 4869KB)

  • Map 3 - Year of Photography 1994 - scale 1:3500 (PDF 4474KB)

Appendix 7 Drawings, Ministry of Forests, Prince George

  • Map 1 - Plan of Road Network Above Donna Creek Slide - Cassiar L.D. - scale 1:2000 - Plot date 20/06/1995 (PDF 2249KB)

  • Map 2 - Profile of Road Network Above Donna Creek Slide - Cassiar L.D. - scale Hor. 1:2500, Vert. 1:250 - Plot date 23/06/1992 (PDF 1580KB)

  • Map 3 - Profile of Road Network Above Donna Creek Slide - Cassiar L.D. - scale Hor. 1:5000, Vert. 1:500 - Plot date 23/06/1992 (PDF 2336KB)

Appendix 8

  • Map 1 - Donna Creek - Drainage Basins Pre Road Development - scale 1:3500 (PDF  3061KB)

Appendix 9 (empty)

Appendix 10

  • Map 1 - Donna Creek - Donna Creek 1992 Slope Failure - scale 1:3500 (PDF 3352KB)

Appendix 11 Field Notes, Office Notes and Calculations (PDF 4195KB)

Appendix 12 Hydrology Analysis, P. Beaudry 1992 (PDF 792KB)

Appendix 13 Flow Calculation, Jamieson 1992 (PDF 388KB)

Appendix 14 Slope Failure, Volume Calculations (PDF 55KB)

Appendix 15 Integrated Mapping Technologies, Report (PDF 1053KB)

Appendix 16 Digital Map Files (PDF 207KB)

Updated March 2007