The Imperial Irrigation District water department is sending letters to all Imperial Valley growers warning that water orders may be refused if tailwater structures fail to meet IID standards once a 45-day warning period is issued.
Tailwater boxes are used to measure drainage water discharge. Properly functioning structures also help to reduce the amount of silt that flows into agricultural drains as is required by state regulations.
IID Water department manager Mike King said, "With the state's total daily maximum load requirements, the district's ability to maintain the agricultural drains would be thrown into jeopardy without strict enforcement of the tailwater box regulations. This action is really intended to protect the way growers farm in the Imperial Valley."
The state Regional Water Quality Control Board last year implemented a TMDL requirement to reduce silt in the drain as a way of cleaning water that flows from farm fields into the New and Alamo rivers and the Salton Sea.