During Mark McBroom’s 40 years of farming in the Imperial Valley, he’s had to adapt to changing climate conditions and water availability. After California, Arizona and Nevada came to an agreement in May to reduce their Colorado River water usage, McBroom may soon have to adapt again. Imperial County is the driest in California, only getting 2 to 3 inches of rainfall every year. So, farmers in the region get the vast majority of their water from the Colorado River.