By establishing the District, the Arizona State Legislature created an entity charged with keeping county residents safe from flood hazards and established an independent funding source for essential projects. The District is a municipal corporation and political subdivision of the State of Arizona. The Maricopa County Board of Supervisors doubles as the District's Board of Directors and receives counsel from the Flood Control Advisory Board comprised of county citizens.

The 2009 Comprehensive Floodplain Management Plan and Program is intended to be used as a general guide for future decision-making in District activities. The Plan aims to present adequate background information to aid District staff in prioritizing areas for future studies and projects. The Plan identifies historic flooding events, reviews the District's efforts to solve flooding problems, and formulates five-year plans to reduce flooding through flood control project construction, floodplain identification, and planning programs throughout the county.

For the 2008 AARIN study, 2,105 Maricopa County (AZ) arrestees volunteered to complete the survey instrument and to provide a valid urine specimen for testing. In addition, the arrestees responded to a series of questions related to methamphetamine use, including patterns of use, treatment, drug transactions, sales and manufacturing, and awareness of the Arizona Meth Project. Among those participants, 435 (20.7%) admitted to having used methamphetamine in the 30 days prior to arrest.

In early 2009, an Exploratory Committee was formed to investigate the potential creation of a Veterans Court in Maricopa County, Arizona. The Committee’s initial efforts have focused on examining existing Veterans Courts and determining the size and scope of the problem (i.e., the number of veterans in the county jail). This report provides an overview of information on veterans in the Maricopa County Jail System, drawing on data collected by the Arizona Arrestee Reporting Information Network (AARIN). This report is intended to assist the work of the Veterans Court Exploratory Committee.

This report seeks to address the knowledge gap in understanding the relationship between combat-related conditions such as PTSD and TBI and involvement in the criminal justice system, through an examination of 1,370 recently booked arrestees in Maricopa County, Arizona. Using interview data from the Arizona Arrestee Reporting Information Network (AARIN), the report characterizes the problems and prior experiences of military veterans, and compares veteran and nonveteran arrestees along a range of demographic, background and criminal behavior measures. The overall objectives of the report are to provide an ongoing estimate of the prevalence of military veterans in the Maricopa County arrestee population and to assess the extent to which the arrested veterans differ from the larger arrestee population.

As part of the Bureau of Justice Assistance’s Smart Policing Initiative, the Glendale Police Department and the Center for Violence Prevention and Community Safety at Arizona State University found that convenience stores -- particularly Circle K's -- disproportionately contributed to crime and disorder in the city of Glendale. The Center reached out to other law enforcement agencies in the Phoenix metropolitan area, and in June 2011, they authored a report based on 2010 data from four cities: Glendale, Mesa, Phoenix, and Tempe. The 2010 report revealed that, when compared to other convenience stores Circle K’s, were disproportionately responsible for crime and disorder, regardless of their neighborhood or city.