The cities annex feature class is intended to track city and town annexations in Maricopa County, Arizona.

This dataset contains the Maricopa County, Arizona City Council District boundaries for those cities with council districts. This includes Phoenix, Surprise, Buckeye, Peoria, Glendale and Mesa.

The Year 2000 Land Use coverage was created as a joint effort of MAG and MAG member agency staff. Land Use components were classified into 46 categories. The Year 2000 Land Use coverage is used for a variety of planning purposes including socioeconomic forecasting and air quality modeling.

REQUIRED: A brief narrative summary of the data set.

This is one of a series of earth fissure maps prepared by the Arizona Geological Survey ( AZGS ) in accordance with Ariz. Rev. Stat. 27-152.01(3). AZGS collected location information from previously conducted earth fissure studies, reviewed available remote-sensing aerial and satellite imagery, and conducted surface site investigations throughout the study area. A reasonable effort was made to identify all earth fissures in the study area. Nonetheless, some fissures may remain unmapped as a result of one or more of the following: 1) existing fissures may have been masked by construction or agricultural activities; 2) incipient fissures may lack clear surface expression; 3) the surface expression of fissures changes constantly as new earth fissures develop and old earth fissures fill in. A blank area on the map does not guarantee earth fissures are not present. However, blank areas within the study area boundary have been investigated, and no surface evidence of fissures was found as of the date of map publication. Determining the presence or absence of a fissure at any specific site may require additional mapping and/or geotechnical analysis.

The City of Tempe ZIP Codes feature class is from Maricopa County GIS Open Data and is intended to show the USPS ZIP Code boundaries within Tempe, Arizona.

The 1995 Land Use coverage was created as a joint effort of MAG (Maricopa Association of Governments) and MAG member agency staff. Land Use components were classified into 24 categories. The 1995 Land Use coverage is used for a variety of planning purposes including socioeconomic forecasting and air quality modeling.

The Painted Rock Mountains are about 15 miles west of the town of Gila Bend insouthwestern Maricopa County, Arizona (Fig. 1). The narrow north-south trending mountain range isapproximately 12 miles long and 2 to 4 miles wide. The range is easily accessible by use of thepaved Painted Rock Road which crosses the historic Butterfield Stage Route (once the Gila Trail andthe route followed by the Mormon Battalion in 1846), and extends northward to Painted Rock Dam.The study area encompasses parts of the following 1:24,000 scale U.S. Geological Surveytopographic maps: Citrus Valley West, Theba, Dendora Valley, and Sentinel NE. Bedrock consistsmostly of Miocene intermediate to felsic volcanic rock that has been intruded by a granitic pluton andis overlain by basalt (plate 1; Fig. 2).Field work during February and March, 1993, coincided with filling of the Painted RockReservoir to peak capacity and overflow of the spillway (the first time since the dam wasconstructed). The high water level is marked on Plate 1. The nomenclature for the rock descriptionswas adopted and modified from both the U.S. Army Corps of Engineers Painted Rock Dam 1987 RedBook report and U.S. Geological Survey Open-File Report 87-347.This project was jointly funded by the Arizona Geological Survey and the U.S. GeologicalSurvey COGEOMAP program, contract #1434-92-A-1061.

This is one of a series of earth fissure maps prepared by the Arizona Geological Survey ( AZGS ) in accordance with Ariz. Rev. Stat. 27-152.01(3). AZGS collected location information from previously conducted earth fissure studies, reviewed available remote-sensing aerial and satellite imagery, and conducted surface site investigations throughout the study area. A reasonable effort was made to identify all earth fissures in the study area. Nonetheless, some fissures may remain unmapped as a result of one or more of the following: 1) existing fissures may have been masked by construction or agricultural activities; 2) incipient fissures may lack clear surface expression; 3) the surface expression of fissures changes constantly as new earth fissures develop and old earth fissures fill in. A blank area on the map does not guarantee earth fissures are not present. However, blank areas within the study area boundary have been investigated, and no surface evidence of fissures was found as of the date of map publication. Determining the presence or absence of a fissure at any specific site may require additional mapping and/or geotechnical analysis.

This is the digitized version of a map of the Hohokam canal system in what is now the Phoenix metropolitan area. It is based on the thesis research by J. B. Howard (Howard, J. (1990). Paleohydraulics : techniques for modeling the operation and growth of prehistoric canal systems. Thesis (M.A.)--Arizona State University, 1990). The original paper map is based on previous archaeological data, overlayed onto USGS 7.5 minute quadrangle maps to recreate the canal pattern.

Cross sections as approved by the Federal Emergency management Agency (FEMA) for the Flood Insurance Rate Maps (FIRM)

The Cave Creek quadrangle is located along the northernmost fringe of the Phoenixmetropolitan area, and is bordered by the Paradise Valley to the south and high-standing mesas tothe north. Given its location, the Cave Creek area is becoming increasingly urbanized and isundergoing rapid population growth. Thus, the knowledge of the distribution and character ofbedrock and surficial deposits is important to make informed decisions concerning management ofthe land and its resources. Geologic mapping of the Cave Creek quadrangle is related to otherprevious and ongoing mapping projects of urban fringe areas located to the north and northeast ofthe Phoenix metropolitan area (figure 1).Access for most parts of the Cave Creek quadrangle is excellent (figure 2). Numerous pavedroads (e.g., Scottsdale Road, Cave Creek Road, Carefree Highway) and well-maintained dirtroads make much of the quadrangle highly accessible. Access within the Cave Creek Recreationarea is limited to the established trail system, unless permission from the park rangers is obtained.Building construction is active across the area, and several large, gated housing developmentsrestrict the access to previously accessible areas; permission is required to enter several of thesedevelopments (e.g., Desert Mountain).Geologic mapping of bedrock in the quadrangle was based on field mapping, whereas surficialmapping was based upon both field observations and interpretation of aerial photographs. A seriesof black-and-white, 1:48,000-scale aerial photographs (dated 9-17-92) and color, 1:24,000-scaleaerial photographs (dated 11-5-79 and 6-11-88) were obtained from the Tonto National Forestoffice in Phoenix. This study.is contiguous with geologic mapping recently completed in theWildcat Hill quadrangle to the east (Skotnicki and others, 1997).Geologic map of the Cave Creek Quadrangle, Maricopa County, Arizona.Report, one map sheet, scale1:24,000, and one sheet of cross-sections.

Water surface elevations of the base flood as approved by the Federal mergency management Agency (FEMA) for the Flood Insurance Rate Maps (FIRM). The base flood elevation, in feet, is in relation to the National Geodetic Vertical Datum of 1929. Profile baselines are for the Flood Insurance Rate Maps (FIRM). The cross section data are used for the production of Flood Insurance Rate Maps. The Flood Insurance Rate Maps (FIRMs) show different floodplains with different zone designations. These are primarily for insurance rating purposes, but the zone differentiation can be very helpful for other floodplain management purposes. The differentiated floodplain zones are used for the production of Flood Insurance Rate Maps. Maricopa County has been subdivided into FIRM panels for the publication and distribution of FIRMs. Profile baselines are for the Flood Insurance Rate Maps (FIRM).

Ground water conditions and water level trends. Maps, graphs, chemical analyses, drillers' logs. This resource is available online as a downloadable pdf, for more information see links provided.

Profile baselines as approved by the Federal Emergency Management Agency (FEMA) for the Flood Insurance Rate Maps (FIRM)

Floodplain zones as approved by the Federal Emergency Management Agency (FEMA) for the Flood Insurance Rate Maps (FIRM). Differentiated according to the FEMA letter coding scheme.

Face Mountain and Oatman Mountain are located approximately 25 miles northwest of thetown of Gila Bend and about 15 miles north of the town of Sentinel, in southwestern MaricopaCounty, Arizona. They are actually two large buttes which rise just over 1000 feet abovethe surrounding plain. The study area is within portions of the Yellow Medicine Butte Quadrangle(1:24,000), the Quail Spring Wash Quadrangle (1:24,000), the Oatman Mountain Quadrangle(1 :24,000) and the Dendora Valley Quadrangle (1:24,000). The bedrock of the two mountainsconsists almost entirely of basalt.Geologic map of Face Moutain and Oatman Mountain, south-central Gila Bend Mountains, Maricopa County, Arizona,Scale 1:50,000

The eastern Black Canyon City 7 ' Quadrangle and the western Squaw Creek Mesa 7 ' Quadrangle includes the Interstate 17 corridor where it passes through Black Canyon City and Rock Springs and continues north up the steep grade on the southwest slope of Black Mesa (Figure 1). The distribution of surfaces of different ages and sources in the Black Canyon City quadrangle is associated with the Agua Fria River and Quaternary landslides in the southern and northern halves of the quadrangle, respectively. The southern half of the quadrangle is dominated by the incised Agua Fria River and its tributaries (Little Squaw Creek and Moore Gulch). The Agua Fria River has incised up to 60 m into Paleoproterozoic bedrock (Xs) in the11southwestern quarter of the quadrangle. The Little Squaw Creek and Moore Gulch have incised up to 20 m into Chalk Canyon Formation (Tc, Tcl, Tcs) in the southern half of the quadrangle.The northern half of the quadrangle is dominated by Quaternary landslides (Figure 2, 3) ranging from relatively fresh Holocene landslides (Qylsd) to degraded Pleistocene landslides (Qlso). Several older landslide deposits contain younger landslides, indicating that younger mass-wasting events have occurred on older landslide deposits.

Surficial Geology of the Lower Agua Fria River, Lake Pleasant to Sun City, Maricopa County, Arizona. One report and two map sheets, scale 1:24,000.

Cumulation of the weekly release of COVID-19 data for Maricopa County by City. Includes PCR Test Percent Positivity as viewed on the Maricopa County School Reopening Dashboard map by week. For more information about the data, visit: https://www.maricopa.gov/5594/School-Metrics.