California water management faces land subsidence and policy disputes

California is facing critical water and land stability challenges in the Sacramento Valley and Delta regions. Satellite data reveals that parts of the Sacramento Valley floor subsided by as much as 1.5 feet in a single year during the 2020-2022 drought. Researchers warn that heavy groundwater pumping to sustain crops has caused permanent compaction of underground sediments, meaning some aquifers may never recover their former water-storage capacity even during wetter years.

Simultaneously, the State Water Resources Control Board has released a draft update to the Bay-Delta Plan to manage water across the Sacramento-San Joaquin Delta. The proposal aims to balance the needs of nearly 30 million people and 4 million acres of farmland with protections for fish, wildlife, and tribal communities. The plan includes specific unimpaired-flow targets for the Sacramento River and its tributaries.

However, the management strategy has met resistance. Environmental and fishing advocates, including Friends of the River, have criticized the approach, arguing that voluntary agreements are insufficient to reverse declining river flows and fish populations. Critics warn the current plan may be ‘doomed to fail’ in securing long-term water supplies and protecting ecosystems.