# Endangered and Threatened Wildlife and Plants; Revised Designation of Critical Habitat for the Sonoma County Distinct Population Segment of California Tiger Salamander
> **US Fish and Wildlife Service** · Final rule. · Published 2011-08-31 · Effective 2011-09-30 · 76 FR 54346
## Document
- **Document number:** 2011-21945
- **Category:** endangered-species
- **Sub-agency:** US Fish and Wildlife Service
- **State:** CA
- **Federal Register citation:** 76 FR 54346
- **CFR reference:** 50 CFR 17
- **Publication date:** 2011-08-31
- **Effective date:** 2011-09-30
- **Interior docket:** Docket No. FWS-R8-ES-2009-0044
## Abstract

We, the U.S. Fish and Wildlife Service (Service), designate revised critical habitat for the Sonoma County distinct population segment of the California tiger salamander (Ambystoma californiense) (Sonoma California tiger salamander) under the Endangered Species Act of 1973, as amended (Act). In total, approximately 47,383 acres (19,175 hectares) of land are being designated as revised critical habitat for the Sonoma California tiger salamander.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2011/08/31/2011-21945/endangered-and-threatened-wildlife-and-plants-revised-designation-of-critical-habitat-for-the-sonoma)
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