Analysis of Pesticides in Surface Water and Sediment from Yolo Bypass, California, 2004–2005
By Kelly L. Smalling, James L. Orlando, and Kathryn M. Kuivila
Scientific Investigations Report 2005-5220, published 2005.
Table 1
2003 Pesticide application amounts for the five source watersheds to the Yolo Bypass, California.
[For the Yolo Bypass high-flow watershed, the total application amounts equal the sum of the watersheds listed below for the entire Bypass. Values are in pounds per year. Pesticide application amounts are in pounds per year active ingredient. KL, Knights Landing]
  Watersheds
Pesticide Cache Creek Putah Creek KL Ridge Cut Willow Slough Sacramento and Feather Rivers
Bifenthrin 43 0 670 25 600
Carbaryl 630 62 1100 170 4200
Chlorpyrifos 5340 2400 25000 5500 92000
DCPA 0 0 440 0 400
Diazinon 1540 1100 8200 1700 52000
EPTC 1300 0 3800 0 4300
Hexazinone 1270 1300 7700 5400 27000
Methidathion 0 0 1200 0 6400
Metolachlor 2600 1800 11000 5900 3200
Molinate 0 1100 150000 7000 370000
Napropamide 580 250 3100 370 4800
Oxyfluorfen 3600 1100 15000 1700 12000
Pendimethalin 360 210 5900 240 6000
Simazine 1820 650 2500 210 19000
Tau-fluvalinate 0 0 36 0 36
Thiobencarb 2000 0 250000 14000 280000
Trifluralin 5100 3400 27000 15000 12000