No allocation at this time The Colusa Groundwater Authority (CGA) does not currently implement groundwater volume allocations, instead operating under a fee-based assessment system with rates varying by land use type: Non-Irrigable parcels at $0.53/acre, Groundwater Only parcels at $11.19/acre, Conjunctive Use parcels at $7.42/acre, and Surface Water parcels at $2.66/acre. The CGA's approach focuses on monitoring groundwater conditions and maintaining sustainability through adaptive management rather than direct pumping restrictions. However, the revised Groundwater Sustainability Plan approved in February 2025 includes provisions for implementing "board-approved demand management policies when necessary to prevent or respond to minimum threshold exceedances," meaning allocation systems could be triggered if groundwater levels, subsidence, or other sustainability indicators reach critical thresholds.
