Date post: | 27-Mar-2015 |
Category: |
Documents |
Upload: | sierra-kent |
View: | 215 times |
Download: | 0 times |
Mik LewickiSan Francisco Estuary Institute
SPLWG December 12, 2007
Watershed Specific SuspendedSediment Loads Modeling
Introduction • Suspended sediment loads are influenced by climate, geology and
tectonics, soils, basin size and slope, land use and management.
Suspended Sediment Loads Vs. Discharge
Alameda Ck. At Niles
Arroyo De La Laguna
Near Pleasanton
Alamewda Ck. Below Welch Ck. Near Sunol
Arroyo Valle Near
Livermore
Arroyo Valle Below Lang Canyon Near
Livermore
Cull Ck. Above Cull
Ck. Reservoir Near Castro
Valley
Cull Ck. Below Cull Creek Dam Near Castro
Valley
San Lorenzo Ck. Above Don Castro Reservoir
Near Castro Valley
Water Year
11179000 11177000 11173575 11176500 11176400 11180960 11180965 11180825
1960 14,674 1961 9 1962 36,784 1963 163,405 52,293 1964 6,431 1965 99,569 15,592 1966 5,745 485 1967 260,780 133,938 1968 8,344 1969 146,757 1970 79,417 1971 24,999 1972 2,766 1973 209,652 1974 8,037 1975 10,752 1976 6 1977 2 1978 65356? 1979 2,641 8,475 337 1980 43,038 1981 1,282 5481982 93,217 66,8281983 87,180 80,4691984 19,508 10,7141985 4,186 3,0341986 48,908 47,2431987 2,359 3,2261988 98 1,0401989 280 4531990 1991 1992 1,328 4,8521993 1994 5891995 15,826 1996 12,560
1997 35,701
1998 45,291 151,514
1999 7,081 21,328
2000 35,412 43,355 13,887 8,116 27,032
2001 5,462 7,145 109 132 279
2002 8,099 16,764 1,441 1,496 3,738
2003 394,341 207,295 8,230 10,216 79,756
2004 89,675
2005 41,933
2006 150,401
ResultsInformation from these studies will be combined with information from other studies mainly through mass budgets to provide a more complete picture of temporal trends and spatial patterns in contaminant loads in the Bay
We hope to learn where it might be the most appropriate to apply limited resources to achieve mass loading target, loads avoided target, or a sediment concentration target.