Pájaro River Watershed Flood Protection Plan - The Pajaro River ...

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APPENDIX 6: Topographic detail for a Cross Section in Appendix 5 Historical Change area Detailed topography of a section of lower San Benito River near Highway 101 Appendix 6. A cross-section based on the December, 2000 aerial survey. Lower San Benito River just upstream from San Juan Road near Highway 101. Tilled bench at the lower left is 160 ft. elevation. Orchard is 142 ft elevation on old floodplain. Berm rises to between 154 and 170 ft elevation. Thalweg of channel is at 130 ft elevation. Channel right bank is at 160 ft elevation. DRAFT 7/22/03 56 Pájaro Watershed Flood Management
Figure 16 – San Benito River channel at Mitchell Road about one-half mile downstream (west) from the “new” Highway 156 bridge. The active channel is 1.0 km wide here. The banks here against the old floodplain are only 6-8 ft above the riverbed but that floodplain is now abandoned because the overwide channel accommodates all flow. Remnant floodplain is seen in the upper northeast and northwest corners and a small portion of the left bank at the bottom of the photo. Active bank cutting is toppling buildings along the right bank. Figs 8-10 (following) show how distinct floodplain and Lake San Benito terrace levels are at this point on the right bank. DRAFT 7/22/03 57 Pájaro Watershed Flood Management
Page 1 and 2:
California State University Robert
Page 3 and 4:
Table of Contents Executive Summary
Page 5 and 6:
Pájaro River Watershed Flood Manag
Page 7 and 8: that today bears the name Pájaro.
Page 9 and 10: Map B. 1908 Parcel Map of a portion
Page 11 and 12: Map A 1875 based on 1854 land surve
Page 13 and 14: Upper Watershed, San Benito and San
Page 15 and 16: Himalaya and Alaska are there possi
Page 17 and 18: DRAFT 7/22/03 17 Pájaro Watershed
Page 19 and 20: The current project attempts to rec
Page 21 and 22: California State University Robert
Page 23 and 24: where: g adj is the adjusted skew g
Page 25 and 26: 70000 Hollister upper confidence in
Page 27 and 28: value for the maximum possible 100-
Page 29 and 30: Regional Analysis The trend in perc
Page 31 and 32: Interestingly, the maximum consecut
Page 35 and 36: We also find that on the order of 6
Page 37 and 38: Figure11 Cartoon showing how incisi
Page 39 and 40: Although Hospital Road shows some a
Page 41 and 42: clearly attenuate (reduce) flood pe
Page 43 and 44: average 8-foot depth of water that
Page 45 and 46: culverts and fill. Other parts of t
Page 47 and 48: Our modeling of enhanced flood stor
Page 49 and 50: APPENDICES & Figures APPENDIX 1: No
Page 51 and 52: APPENDIX 5 Example of Historical Ch
Page 53 and 54: APPENDIX 2: 1995 and 1998 Storm Com
Page 55 and 56: http://12.45.109.6/pls/portal30/get
Page 57: 50 Corralitos Creek Hydrograph & Co
Page 61 and 62: Fig 15 Stream Barb Structures DRAFT
Page 63 and 64: Corps’ Data presented Alternative
Page 67 and 68: . illustrations, on an interim repo
Page 69 and 70: APPENDIX 3 Streambank Property Owne
Page 71: Historical Change in San Benito Riv
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Pájaro River Watershed Flood Protection Plan - The Pajaro River ...

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