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.

Water quality is an important issue in the alternatives analysis of the SDCP and as a component of the Environmental Planning Element of the Comprehensive Plan that requires analysis, policies and strategies to address anticipated effects of plan elements on air quality, water quality and natural resources associated with proposed development under the Plan.

Argues that the canons of evidence that apply to artifactual evidence of prehistoric behavior patterns are sometimes distinct from those that apply to non-artifactual evidence, and the logic and archaeological value of the latter is not less simply because it is different. The essay is intended to instruct and sensitise archaeologists to this issue as much as it is to allay concern that the pollen evidence for Archaic maize cultivation at the Koster site may not be credible. 49 p. Also see Schoenwetter 1994