The Decision Center for a Desert City at Arizona State University—funded by the National Science Foundation since 2004—conducts research relevant to water resources and urban climate dynamics under multiple uncertainties. This report summarizes and synthesizes research findings and achievements of DCDC after almost a decade of research and science-policy interactions. Water resource decision-making is complicated by climate change and variability, population growth and economic development, diverse stakeholder interests and fragmented governance. While these factors generate various uncertainties and complexities for decision-makers, DCDC pursues research to create a more sustainable future. The DCDC contributes to water management and urban sustainability by conducting basic science and collaborating with policymakers and stakeholders to solve real-world problems. As detailed herein, DCDC research, education, and community outreach have made substantial contributions to improving water-resource governance and climate adaptation.

The purpose of this study was to conduct an evaluation of the Maryvale Weed and Seed Coalition. First, a process evaluation was conducted to examine the implementation of policies, goals, and planned activities by Maryvale Weed and Seed. Afterwards, an impact evaluation was conducted to assess the efficacy of Maryvale Weed and Seed in combating crime and disorder in the designated program area. The sections below outline both the characteristics of the affected site and the methodology used to conduct the process and impact evaluations.

The purpose of the present study was to conduct an evaluation of the Canyon Corridor Weed and Seed, using both qualitative and quantitative data to conduct process and impact evaluations. The process evaluation relied on official documents detailing site activities and interviews with key stakeholders. The impact evaluation relied on Uniform Crime Report (UCR) and call for service (CFS) data from the Phoenix Police Department (PPD) from 2002 through 2007, divided into two categories represented by a four-year “pre-test” and two-year “post-test”. The results of the process evaluation indicated that the Canyon Corridor Weed and Seed was actively engaged in activities pursuant of their original site goals, and adapting them as the site developed. The impact evaluation indicated that the crime rates in the Canyon Corridor Weed and Seed area experienced mixed declines and increases during the past two years of official programmatic activities when compared to the four years prior for crimes related to violent, property, drugs, and total crimes.

Prior to developing and approving new ordinances that would further regulate sex- offender distance restrictions and clustering, the Phoenix City Council approved a study to examine the nature and impact of sex-offender clustering. Their overall goal was to use the study to fill in some important knowledge gaps about the issue of sex-offender residential clustering in order to inform the development of effective policy. To examine this issue on behalf of the city council, we relied on a multi-methodological research design. We wanted to incorporate information from several different points of view, giving policy makers a more comprehensive perspective from which to inform their decision making. For this study, we relied on four resources: official police data, offender interview data, citizen survey data, and key stakeholder interview data.

The South Mountain neighborhood is located in the southern part of the City of Phoenix in Maricopa County. The three zip codes of 85040, 85041 and 85042 comprise the bulk of the neighborhood and serve as the target area boundary for this report. South Mountain is a distressed community, with significant need and limited resources. It is an area that differs from most of the city, with a pre- dominantly economically disadvantaged Latino and African-American population. As part of Maricopa County’s efforts to identify the needs, the gaps in services and resources, and to use data to inform the County about making effective and meaningful policy changes, this report uses data collected as part of the ongoing AARIN project and economic measures derived from U.S. Census data to help examine and potentially guide restoration efforts in South Mountain.

The primary purpose of this paper is to examine the educational achievement and attainment of Latinos living in Arizona. In short, the educational performance and attainment of Hispanics lags considerably behind that of the state’s non-Hispanic white residents. Moreover, the growth in the number of Hispanics, especially children, has far outpaced that of the non-Hispanic white population, raising the importance of this educational gap. This issue was highlighted in the 2001 Morrison Institute report Five Shoes Waiting to Drop on Arizona’s Future.

The specific goal of this report is to assess the future of Hispanic educational performance and attainment in Arizona, but this outlook is dependent to a very sizable extent on the characteristics of the Hispanics living in Arizona. In particular, the educational achievement and attainment of Hispanic immigrants has been substantially less than that of Hispanics born in the United States. Forecasting Hispanic immigration specifically and the characteristics of the Hispanic population generally is extremely difficult for two reasons: severe data limitations, and recent legal and policy changes related to immigration.

Throughout the southwestern United States, vegetation in what historically was grassland has changed to a mixture of trees and shrubs; exotic grass species and undesirable shrubs have also invaded the grasslands at the expense of native grasses. The availability and amount of soil nutrients influence the relative success of plants, but few studies have examined fire effects on soil characteristics in a temporal, spatial, and species group-specific fashion. Likewise, few studies have tied fire effects and ecological aspects to the underlying geology. Our research investigates the effects of fire events on selected soil characteristics pH, nitrate (NO3-), plant-available phosphorus (PO4-3), and total organic carbon (TOC) on native grass-, exotic grass-, and mixed grass-dominated plots distributed on four different geological surfaces. Treated and control plots were sampled prior to burn treatment and at intervals after the burns. In addition to new geologic mapping of the study areas, results indicate the geologic substrate is the most important variable for explaining pH, NO3- and PO4-3 values in the soils. Dominant grass type – native, non-native, or mixed – had little effect on the response of soil geochemistry to fire events: post-burn results indicate vegetation was a significant factor only for TOC. Recovery to pre-burn levels varies with characteristic: there were no significant initial differences between vegetation types, but significant differences in NO3-, PO4-3, and TOC amounts occur as a result of fire events, geological characteristics, and time. The research helps identify the soil response to fire and the recovery times of soil characteristics, further defines which fire frequency is optimal as a management strategy to maximize soil macronutrient contents, and illustrates the important role geology plays in grassland ecosystems.

This summary report overviews a State of Arizona and U. S. Department of Energy funded drilling project to determine if near-term hot dry rock (HDR) geothermal potential exists in the eastern portion of the White Mountains region of Arizona. A 4,505 feet deep slim-hole exploratory well, Alpine1/Federal, was drilled within the Apache-Sitgreaves National Forest at Alpine Divide near the Alpine Divide camp ground about 5 miles north of Alpine, Arizona in Apache County (Figure 1). A comprehensive technical report, in two parts, details the results of the project. Part 1, Alpine1/Federal, Drilling Report, discusses the drilling operations,
logging program, permitting and site selection for the hole. Part 2, Temperature Gradients, Geothermal Potential, and Geology, summarizes the temperature gradients, heat flow, geothermal potential, and subsurface geology.

The study reported here was designed to examine the impact of background meteorological conditions on the propagation of noise from urban freeways in the Phoenix area. The aim was to understand and predict how sound waves emanating from highways respond to the vertical profiles of atmospheric temperature gradients and velocity shear, so that sound measurements can be interpreted with regard to the environmental variability.