The Sustainable Groundwater Management Act (SGMA) requires periodic evaluation of approved Groundwater Sustainability Plans (GSPs) at least every 5 years. The periodic evaluation represents the Groundwater Sustainability Agencies’ (GSAs’) written assessment of GSP implementation and adaptive management. The Paso Basin GSAs are required to submit the 5-Year Plan Evaluation to the California Department of Water Resources for review by January 30, 2025.​​