1 / 16

Zone 4 Line A Preliminary Suspended Sediment Load Estimates HY08

Item # 2b. Zone 4 Line A Preliminary Suspended Sediment Load Estimates HY08. Rand Eads RiverMetrics LLC www.rivermetrics.com rivermetrics@gmail.com 503-435-7516 Sources Pathways and Loadings Workgroup December 8, 2008. HY07 11/10/06 – 4/30/07 Rainfall 10.38 in. 21 storms Max Q 308 cfs

sofia
Download Presentation

Zone 4 Line A Preliminary Suspended Sediment Load Estimates HY08

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Item # 2b Zone 4 Line APreliminary Suspended Sediment Load Estimates HY08 Rand Eads RiverMetrics LLC www.rivermetrics.com rivermetrics@gmail.com 503-435-7516 Sources Pathways and Loadings Workgroup December 8, 2008

  2. HY07 11/10/06 – 4/30/07 Rainfall 10.38 in. 21 storms Max Q 308 cfs Total Q 33,400 cfs 84 SSC analyzed Max SSC 2,744 mg/L Max turbidity 1590 TU Est. load 139.6 MT HY08 1/31/08 – 6/11/08 Rainfall 2.11 in. 18 storms Max Q 241 cfs Total Q 22,900 cfs 66 SSC analyzed Max SSC 2,095 mg/L Max turbidity 892 TU Est. load 94.7MT Item # 2b Zone 4 Line A

  3. Item # 2b Changes in Data Collection Methods from HY07 to HY08 • Bed-mounted boom provided complete data record for season • Turbidity sensor and sampler intake at depth-proportional sampling position • Improved debris shedding • Possible increase in sand to fine ratio

  4. Item # 2b

  5. Item # 2b

  6. Item # 2b r2 = 0.90 r2 = 0.89 r2 = 0.89 r2 = 0.89

  7. Item # 2b

  8. Item # 2b 0.14”

  9. Item # 2b 0.12”

  10. Item # 2b 0.38”

  11. Item # 2b 0.12”

  12. Item # 2b Storms account for ~95% of the seasonal load

  13. Item # 2b

  14. Item # 2b

  15. 9 rising turbidity thresholds (50 - 970) 6 falling turbidity thresholds (925 – 100) Early season contaminate rising thresholds: 105, 319, 670, 970 Mid season contaminate rising thresholds: 72, 220, 462, 670 Item # 2b Zone 4 Sampling HY09

  16. Item # 2b

More Related