Hydrologist warns outdated data undermines water availability conclusions for cannabis project

During the City of Clearlake City Council meeting on January 20, 2022, significant concerns were raised regarding the environmental impact of a proposed cannabis cultivation project, particularly its implications for local water resources. A technical memorandum from a hydrologist highlighted the lack of current data, indicating that outdated assessments could lead to misleading conclusions about water availability for the project.

The environmental checklist for the project rated its hydrology and water quality impact as a category B, the second highest level of concern. Critics pointed out that the assessment relied on a 2006 report, which does not accurately reflect the current state of local wells or the aquifer's capacity. The report suggested that there is adequate water for the project, but it failed to consider the cumulative effects on existing domestic wells, which are primarily located in the upper part of the aquifer.

The council discussed the potential for the project to extract significant amounts of water—up to 82 acre-feet annually, equivalent to over 26 million gallons. This raised alarms about the project's actual water consumption, which could exceed half a million gallons per year, contradicting claims that it would only represent a minor fraction of the aquifer's total capacity.

Further complicating matters, the Department of Cannabis Control (DCC) emphasized the need for substantial evidence to support the project's environmental assessments, particularly regarding cumulative impacts on groundwater. The city’s response, referencing the general plan's environmental impact statement, was deemed insufficient by the DCC, which noted that the plan was developed before cannabis legalization and did not address current regulatory requirements.

As the council navigates these complex issues, the implications for local water resources and community stakeholders remain a pressing concern. The discussions underscore the need for updated data and thorough evaluations to ensure that the project does not adversely affect the water supply for existing residents. The council's next steps will be crucial in determining how these environmental concerns will be addressed moving forward.