Protecting Species under Groundwater Management

Dear Groundwater Colleagues,

The Nature Conservancy is pleased to announce the release of the Critical Species LookBook (the LookBook) which may be found on the Groundwater Resource Hub. The LookBook is a compendium of 84 state and federally listed species likely to be affected by groundwater management and merit consideration by Groundwater Sustainability Agencies (GSAs) under the Sustainable Groundwater Management Act (SGMA). Consistent with SGMA’s emphasis on local control, the LookBook is designed to inform local planning and decision-making.

The goal of the LookBook is to synthesize the best available groundwater-relevant information for each species to ensure that their water needs are adequately considered when developing Groundwater Sustainability Plans (GSPs). The LookBook was developed with expert opinion and review from more than 90 professionals at federal and state agencies, academia, technical consultancy firms, NGOs, and local water agencies with either an expertise in a particular species or in water management.

Please download the PDF version of the LookBook. Should you have any questions regarding information in the LookBook, please contact Ruthie Redmond (

TNC wishes to thank the California Department of Fish and Wildlife, UC Davis, the National Marine Fisheries Service, and Audubon for their invaluable contributions to the LookBook.

Thank you,

Sandi Matsumoto

Associate Director

California Water Program