FP_DFIRM shows areas in Pima County prone to 100-year and shallow 100-year flood events. ZONES A, AE, AH, AO # and AO - ALLUVIAL FAN # comprise the extent of the 100-year floodplain. The tailing numbers in the ZONE AO strings indicate flood depth in feet.ZONE D shows areas that have not been mapped by FEMA (primarily federal and tribal lands). Zone X shows areas that have been mapped but are outside of the 500-year floodplain.ZONE X -SHALLOW 100-YEAR shows the extent of the shallow 100-year floodplain, the 500 year floodplain and Areas protected by levee. The layer FP_ZONEX provides subclassifications for these areas.Note, FP_LOMX can be used to augment FP_DFIRM for large-scale mapping.Also note, FP_DFIRM should be used in conjunction with FP_SS for the floodprone land brochure mailings sent out by PCRFCD on an annual basis.For general FIRM information: See more information.This layer is maintained by Pima County. Click here to visit Pima County's Open Data site. Click here to visit Pima County's GIS Library metadata. PurposeThis layer was developed to show Flood Hazard Zones in Pima County, Arizona.Dataset ClassificationLevel 0 - OpenKnown UsesThis layer is not in any known applications.Known Errors A composite of FEMA maps with different scales and years.ContactPima County - GISdata@pima.govUpdate FrequencyAs Needed

EXERCISE ONLYThis web map serves as the Public Information Map for Flood Hazards in Pima County, Arizona. It is compiled of three main layers:Enriched Special Flood Hazard Area layer from FEMA (http://landscape1.arcgis.com/arcgis/rest/services/USA_Flood_Risk/MapServer)Current Weather Conditions feed from ESRI (https://livefeeds.arcgis.com/arcgis/rest/services/LiveFeeds/NOAA_METAR_current_wind_speed_direction/MapServer)World Traffic from ESRI (https://traffic.arcgis.com/arcgis/rest/services/World/Traffic/MapServer)These layers allow for the public to have an understanding of both the flooding hazards, but also the traffic conditions associated with severe weather and flash flooding.

This data contains City of Tucson mapped flood hazard areas. Related feature class: dsdFHZstudy2007CrossSections.Supplemental Information: 8/31/2010 - loaded shapefile into EDITSDE geodatabase from Stormwater shapes folder. Circa 2007 - Shapefile created by consultant JE Fuller who was hired by the City to map non-FEMA flood hazards. It is a composite of the city's old Flood Hazard Zones and the new Flood Hazard Zones. Cross sections (feature class: dsdFHZStudy2007CrossSections) are used to determine depth of water. Began by TDOT in the 70's and 80's, added to by Frank (some from JE Fuller study) to display areas that could flood but are too small to be looked at by FEMAPurposeLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.Dataset ClassificationLevel 0 – OpenKnown UsesLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.Known ErrorsLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.ContactLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.Update FrequencyLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.

fp_lomxb displays area boundaries in which the floodplain data has been revised by Letter Of Map Revision (LOMR).This layer is maintained by Pima County. Click here to visit Pima County's Open Data site. Click here to visit Pima County's GIS Library metadata. PurposeThis layer was developed to show Floodplain Areas of Revision in Pima County, Arizona.Dataset ClassificationLevel 0 - OpenKnown UsesThis layer is not in any known applications.Known Errors Many of the revision area boundaries were digitized from paper copies or screen digitized using the FIRM panel as a reference.12/2013: While this layer is maintained as a Shapefile, the coverage format is still required for certain nightly processing. See Steve Whitney. - FEMA floodplain data extraction processContactPima County - GISdata@pima.govUpdate FrequencyAs Needed

The dataset includes approximate flood-hazard boundary areas prepared by both detailed and approximate methods. Study limits were defined using the highlighted drainage-problem areas shown on the city's zoning base maps as a guide. Floodplain studies completed and sealed in 2007 and 2008 . Shape files created April 2011. Shape files exported from Autodesk Map 3D 2006 and projected using ArcMap 10.Maintenance and frequency to be determined by City of Tucson, Planning and Development ServicesUsage: This layer is intended to be used in the City of Tucson's Open Data portal and not for regular use in ArcGIS Online, ArcGIS Enterprise or other web applications.Link to Open Data item: https://gisdata.tucsonaz.gov/datasets/channel-center-lines-open-data

The dataset includes approximate flood-hazard boundary areas prepared by both detailed and approximate methods. Study limits were defined using the highlighted drainage-problem areas shown on the city's zoning base maps as a guide. Floodplain studies completed and sealed in 2007 and 2008 . Shape files created April 2011. Shape files exported from Autodesk Map 3D 2006 and projected using ArcMap 10.PurposeThis layer is intended to be used in the Open Data portal and not for regular use in ArcGIS Online and ArcGIS Enterprise.Dataset ClassificationLevel 0 - OpenKnown UsesLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.Known ErrorsLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.Data ContactLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.Update FrequencyMaintenance and frequency to be determined by City of Tucson, Planning and Development Services.

A copy of located in editsde for backup purposes. The dataset includes approximate flood-hazard boundary areas prepared by both detailed and approximate methods. Study limits were defined using the highlighted drainage-problem areas shown on the city's zoning base maps as a guide. Floodplain studies completed and sealed in 2007 and 2008 . Shape files created April 2011. Shape files exported from Autodesk Map 3D 2006 and projected using ArcMap 10. Maintenance and frequency to be determined by City of Tucson, Planning and Development ServicesReplace feature class "dsdFHZStudy2007CrossSections" See feature class "cotFloodHazardsPurposeLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.Dataset ClassificationLevel 0 - OpenKnown UsesThis layer is intended to be used in the Open Data portal and not for regular use in ArcGIS Online and ArcGIS Enterprise.Known ErrorsLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.Data ContactLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.Update FrequencyLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.

This layer represents watershed boundaries in the Tucson area, including areas designated as Critical or Balanced based on stormwater detention-retention requirements outlined by Tucson City Code, Part II, Chapter 26. These designations guide stormwater management practices to prevent flooding and manage runoff effectively in compliance with local regulations. For more detailed information, you can refer to the official code here.Examples of features mapped in this layer include:Balanced WatershedsCritical WatershedsRegulatory layer. See Development Standards 10-02 (COT Drainage Manual can be found on TDOT's map and records page under downloads as of July 2012: https://www.tucsonaz.gov/tdot/maps-and-records) and COT's Floodplain, Stormwater, and Erosion Hazard Management regulations in the Tucson City Code, Part II, Chapter 26 PurposeThis dataset helps identify watershed regions for planning, water resource management, and flood mitigation efforts.Dataset ClassificationLevel 0 – OpenKnown Uses--Known ErrorsData may have inconsistencies due to natural changes in the landscape.Data ContactPlanning and Development Services DepartmentMatthew Berubematthew.berube@tucsonaz.govUpdate FrequencyPeriodic updates based on hydrological assessments or urban developments.

This data contains City of Tucson mapped flood hazard areas. Circa 2007 - Shapefile created by consultant JE Fuller who was hired by the City to map non-FEMA flood hazards. It is a composite of the city's old Flood Hazard Zones and the new Flood Hazard Zones. Began by TDOT in the 70's and 80's, added to by Frank (some from JE Fuller study) to display areas that could flood but are too small to be looked at by FEMA.PurposeLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.Dataset ClassificationLevel 0 - OpenKnown UsesThis layer is intended to be used in the City of Tucson's Open Data portal and not for regular use in ArcGIS Online, ArcGIS Enterprise or other web applications.Known ErrorsLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.Data ContactLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.Update FrequencyLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.

This report and maps describe the geology, geomorphology, and geologic hazards inthe Three Points quadrangle, on the southwestern fringe of the Tucson metropolitan areain unincorporated Pima County (Figure 1). The map area is located in the transitionbetween the upland, moderately dissected Altar Valley to the south and the broad,undissected basin called Avra Valley to the north. The community of Three Points (alsocalled Robles Junction) lies on the approximate boundary between these two geographicareas. The map includes a nine-mile-long reach of Brawley Wash, which cuts through themap area from southwest to northeast. Brawley Wash heads just south of the U.S. Mexico border and drains all of Altar and Avra valleys before joining the Santa CruzRiver northwest of Tucson. About 60 percent of the Three Points quadrangle consists ofthe northwestern piedmont of the Sierrita Mountains. The quadrangle also includes asmall part of the northwestern piedmont of the Coyote Mountains and the southern fringeof the Roskruge Mountains. The quadrangle is generally undeveloped, and is currentlyused primarily for grazing. Some low-density suburban development has occurred aroundthe community of Three Points and on the Sierrita and piedmont to the south. Much ofthe floodplain and terraces of Brawley Wash has been developed for agriculture. TheThree Points quadrangle will likely experience much more urban/suburban developmentin the next few decades. This map and report may be of use in avoiding or mitigatinggeologic hazards in this area. (21 pages)