In what year did the State Board amend Los Angeles' water rights licenses to Mono Lake?

The amendment of Los Angeles' water rights licenses to Mono Lake occurred in 1994. This year is significant because it marked a critical point in the evolving legal and environmental discourse surrounding water rights in California, particularly in relation to the management of water resources that impact ecosystems like Mono Lake.

The State Water Resources Control Board's decision was a response to long-standing environmental concerns regarding the depletion of Mono Lake due to water diversions by the City of Los Angeles. The 1994 amendment established important protections for the lake, recognizing the need for a balance between urban water needs and ecological preservation. As such, this decision set a precedent for future water rights discussions and highlighted the growing emphasis on sustainable water management in California.