Lowermost Pajaro left-bank bench vegetation just downstream from Thurwatcher Bridge - PowerPoint PPT Presentation

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Lowermost Pajaro left-bank bench vegetation just downstream from Thurwatcher Bridge

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Lowermost Pajaro left-bank bench vegetation just downstream from Thurwatcher Bridge
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Lowermost Pajaro left-bank bench vegetation just downstream from Thurwatcher Bridge

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  1. Lowermost Pajaro left-bank bench vegetation just downstream from Thurwatcher Bridge

  2. Corralitos Creek above Salsipuedes ~ 1910?

  3. Salsipuedes & Corralitos Junction

  4. Murphy’s Crossing: view downriver

  5. View upstream – “big bend” just west of AromasImportant flood storage area

  6. Probably near Aromas ~1915 view upstream

  7. View downstream at Aromas - quarry product spills from railroad r-o-w?

  8. View Downstream over Chittenden - Soda Lake Meander Scars

  9. Future site of Graniterock Wilson Quarry (left) - view downstream

  10. Railroad Bridge at Chittenden with 1906 faulting repairsUSGS photo

  11. Upper Pajaro River joining lower San Benito River - view east

  12. Upper Pajaro River (right) joining San Benito River (foreground)View west (downstream)

  13. July 1952

  14. Lower San Benito - pre-mining June, 1939

  15. Hillsdale sand and gravel.   View upriver

  16. Bench height 142; river bed 132; berm height 157-170December 2000

  17. View upstream Hillsdale quarry.     February, 2004

  18. View downstream Hillsdale Quarry

  19. Crossing berm was 13+ ft high in December, 2000

  20. Haul Road berm ~4-10 feet high - view south to San Juan Bautista

  21. Channel isolated in old spoils disposal and mining area

  22. Overview Dec 2000     (A = Abandoned flood plain segments) Hillsdale Quarry site - San Benito River

  23. Gravel skimming and stream-bed mining   -  view south

  24. Past stream-bed mining site, and present mountain-top removal site for Hillsdale plant.View northwest. Banks 10ft and stable.

  25. View southwest (downstream) moving up into bank cutting areas

  26. Lower Lucy Brown Lane reach. Bed of river here mined about 10-15 ft below grade. Left bank erodes in floods (~15 ft high)

  27. Lucy Brown lower reach � view of right bank 15-40 ft high

  28. Lower Lucy Brown reach - left bank active bank cutting 20 ft high

  29. Bank cutting and slumping just downstream from Lucy Brown Ln - View downstream

  30. Bank cutting and slumping just downstream from Lucy Brown

  31. Slump along right bank - lower Lucy Brown stream bed mining reach

  32. Upper Lucy Brown Ln reach - operator shut down in 2002View southwest of left bank 25 ft high

  33. Narrowest point on lower San Benito River - excavated channel

  34. Low berms do not protect closed plant site

  35. Sod Farm site - view west.Floodplains being abandoned but carried floodwater in 1995 and 1998

  36. Small berm “protects” sod farm from 1-10 yr events - view west