Water Quality

Thiobencarb holiday monitoring schedule

Thiobencarb holiday monitoring schedule

Monitoring is underway for the thiobencarb use season. We start doubling up the monitoring this week in advance of the Memorial Day holiday weekend. The increase in the monitoring schedule will continue through the majority of the season.

The current weather forecast indicates rain possible the Memorial Day holiday weekend. The Sacramento River levels have been lower than previous years at the city drinking water intakes, even though the field sheets record higher flows in the drains.

Please reference the thiobencarb waterhold chart in communication about irrigation decisions. The Department of Pesticide Regulation provides waterholding information in the Rice Pesticides Water Management Requirements Summary.

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Thiobencarb Monitoring and Changes to REI

Thiobencarb Monitoring and Changes to REI

Monitoring for 2019

Thiobencarb monitoring starts at the Colusa Basin Drain 5 (CBD5) on Tuesday – the typical start date of water quality monitoring. The CBD5 site is off Highway 20 in Colusa County, and receives drainage from both Colusa and Glenn Counties. The Colusa County Agricultural Commissioner’s office announced receipt of the first thiobencarb notice of intent (NOI) with applications under way. Confirmation of intent to apply thiobencarb from the other rice counties will trigger the decision to add in the remaining monitoring sites. We estimate this will happen as early as May 7.

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