# Endangered and Threatened Wildlife and Plants; Final Rule to List the Riparian Brush Rabbit and the Riparian, or San Joaquin Valley, Woodrat as Endangered
> **US Fish and Wildlife Service** · Final rule. · Published 2000-02-23 · Effective 2000-03-24 · 65 FR 8881
## Document
- **Document number:** 00-4207
- **Category:** endangered-species
- **Sub-agency:** US Fish and Wildlife Service
- **Federal Register citation:** 65 FR 8881
- **CFR reference:** 50 CFR 17
- **Publication date:** 2000-02-23
- **Effective date:** 2000-03-24
## Abstract

We, the U.S. Fish and Wildlife Service (Service), determine endangered status pursuant to the Endangered Species Act of 1973, as amended (Act), for the riparian brush rabbit (Sylvilagus bachmani riparius) and the riparian or San Joaquin Valley woodrat (Neotoma fuscipes riparia). Only a single population of each subspecies has been confirmed, in Caswell Memorial State Park (Park), San Joaquin County, California. These two subspecies are threatened primarily by flooding, wildfire, disease, predation, competition, clearing of riparian vegetation, use of rodenticide, and loss of genetic variability. Naturally occurring random events increase the risk to the single, small population of each subspecies. This rule implements the Federal protection and recovery provisions afforded by the Act for these two subspecies.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2000/02/23/00-4207/endangered-and-threatened-wildlife-and-plants-final-rule-to-list-the-riparian-brush-rabbit-and-the)
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