Endangered and Threatened Wildlife and Plants; 12-Month Finding for the San Francisco Estuary Distinct Population Segment of White Sturgeon
Key claim: The U.S. Fish and Wildlife Service finds that listing the San Francisco Estuary distinct population segment of white sturgeon as endangered or threatened is warranted but precluded by higher-priority listing actions.
Abstract
(Proposed Rule · Interior Department, Fish and Wildlife Service) We, the U.S. Fish and Wildlife Service (Service), announce a 12-month finding on a petition to list the San Francisco Estuary (SFE) distinct population segment (DPS) of white sturgeon (Acipenser transmontanus; San Francisco Estuary white sturgeon) as a threatened species under the Endangered Species Act of 1973, as amended (Act). After a thorough review of the best available scientific and commercial information, we find that listing the SFE DPS of white sturgeon as an endangered or threatened species is warranted but precluded by higher priority actions to amend the Lists of Endangered and Threatened Wildlife and Plants. We will develop a proposed rule to list the SFE DPS white sturgeon as our priorities allow. However, we ask the public to submit to us any new information relevant to the status of the species or its habitat at any time.
Why this matters
A warranted-but-precluded finding places the SFE white sturgeon DPS on the ESA candidate list, signaling elevated federal concern without triggering immediate Section 7 consultation or take prohibitions. The determination is likely to shape California water operations, Delta flow requirements, and fisheries management debates by adding another imperiled estuarine species alongside longfin smelt and salmonids, while deferring the regulatory costs and permitting consequences of a formal listing.