As California enters its fourth year of drought, everyone is seeking new options for monitoring and usage of this precious resource. In September 2014, Governor Jerry Brown signed groundwater legislation, paving the way for new regulations on pumping in California and allowing local agencies to oversee extraction. Enter the San Francisco-based startup Tule, a new business formed with the strength of UC Davis research behind it. With a sensor and monitoring system installed above the crop canopy (and tapped into the irrigation line), the company can accurately tell growers how much water their plants are using and even when and how much to apply. Read more on the UC Davis website.