Acquisition of this property in northeastern Pima County will prevent development of this property, conserve an important tributary to the San Pedro River, conserve riparian habitat associated with an intermittent stream and springs, and further goals of the Sonoran Desert Conservation Plan and Multi-Species Habitat Conservation Plan. The acquisition is ideally located to expand the emerging reserve system in the San Pedro watershed, which is anchored by the County's A7 Ranch, and complemented by the existing Buehman Canyon Preserve. This report provides preliminary biological and cultural information on this acquisition. Additional biological and cultural resource information will be available after County staff and consultants complete surveys of the property.

The continued growth of the human-built environment in Pima County, Arizona will result in the “incidental take” of species that are listed under the Endangered Species Act. To avoid, minimize, and mitigate impacts to both listed and unlisted species and their habitats, Pima County is submitting this Multi-species Conservation Plan for 44 species that may be impacted as a result of the otherwise lawful activities of Pima County and its development community. The Incidental Take Permit, also called a Section 10 permit, will be for 30 years. This MSCP is part of the required documentation needed to receive an Incidental Take Permit under Section 10(a)(1)(B) of the ESA.

Provides an overview of the issues related to monitoring the 36 species proposed for coverage under the forthcoming Section 10 permit to the United States Fish and Wildlife Service. By integrating the requirements for MSCP compliance and effectiveness monitoring with the challenges inherent in single-species monitoring, this document seeks a balance between species-specific monitoring and other habitat, ecosystem and threats-based measures (parameters). By designing such a program, Pima County will be in a better position to anticipate and adjust management actions for the conservation of covered species and the ecosystems that support them.

The Multiple Species Conservation Plan will complete the land use planning process in a conflict between competing interests on the question of growth. A path of balance was chosen by advancing the Sonoran Desert Conservation Plan. This second draft will be posted on the website and distributed to interested community and committee members. A public process will be conducted so that during 200t the document can be finalized and submitted to the U.S. Fish and Wildlife Service as part of the application for a federal endangered species permit.

Pima Association of Governments has worked with County staff for over two years on a series of riparian and water resource studies related to the SDCP and Comprehensive Land Use Plan. The three studies found within this document represent the final versions of (1) Water Quality in Pima County; (2) Water Quality of Priority Streams in Pima County; and (3) Water Quality Requirements of Native Aquatic Species in Pima County.

Report is a review and compilation of existing data on water quality requirements of eight aquatic species. By identifying the water quality requirements of priority vulnerable species of concern, and assessing the quality of water that serves or might serve as potential habitat, we begin to understand which sources will support priority aquatic species identified by the SDCP.