Monthly solid waste tonnages for the city of Ann Arbor, including commercial and residential sources.
All of the city's PFAS water sampling data. This data is also available for interactive analysis via the city's PFAS Monitoring Dashboard.
Hourly air quality data collected by the city. The dataset begins in 2022 with data from a few stations that used AQMesh-brand sensors. Then it switches over to a few Clarity-brand sensors, and finally expands to ten Clarity stations. We have combined the two datasets into a single one here. You can use the "vendor" column to differentiate. The city's Air Quality Dashboard visualizes this data; we are also making it available here for further exploration.
The City of Ann Arbor operates and maintains five tipping​ bucket rain gauges​ (5-min resolution) which are located at Barton Dam, South Industrial Hwy, Jackson Ave​/Parklake Ave, University of Michigan North Campus Area and City Hall​​​. This file contains the data from those gauges in 15-minute increments. Rainfall is visualized on our public-facing dashboards; we also offer the raw data here. The city populates a record of 0.00 inches for the interval 11:45pm-midnight every day for each gauge, unless rainfall occurred during that time in which case the value is preserved. We also temporarily populate a record of 0.00 for the latest timestamp that each gauge has reported data from, to make it clear when the gauge last called in. Since we began collecting this data in 2013, individual gauges have intermittently gone offline and/or reported invalid rain totals (either too high or too low). We have expunged some invalid rain total values for this .csv but these limitations of data incompleteness still affect this dataset.
Polygon preserved under the Open Space and Parkland Preservation Millage of 2003, and beyond.
Properties in the greenbelt area with designation includes detial about the listing.
Graphically defines the current Zoning classifications for the City. Updates are made after approval from City Council. Polygon boundaries of the City of Ann Arbor Zoning Districts.
Zipcode feature shapes as defined in the TIGER census
Polygons of the City of Ann Arbor Voting Precincts. Edited as requested by the City Clerk.
City of Ann Arbor (University and College Owned Parcels)
Locations of City and DTE owned streetlights throughout Ann Arbor
Identify Ann Arbor Public School (AAPS) parcel properties within and around the City of Ann Arbor. Polygon parcels of Ann Arbor Public School (K-12) properties throughout and around the City of Ann Arbor. Updated from City Assessing ownership data.
Each segment of road in Ann Arbor and the surrounding area. Includes the address range, material, road class, speed limit, direction, lane count, travel minutes, and more on each segment.
The location of all the City of Ann Arbor Polling locations (per City Clerk).
Parkland property for conservation, land development planning, park and recreational planning.
Identify open space within close proximity or within The City of Ann Arbor, not managed by a city department
Display current Land Use within the City of Ann Arbor. Updates are made via construction and demolition activities.
Locations of all public, private, and University owned fire hydrants within the City of Ann Arbor or otherwise connected to the City's drinking water network
Hotels in Ann Arbor updated by saftey services records
Polygons defining the boundaries of all registered City of Ann Arbor Historical Districts.
To delineate the polygon boundary of the City of Ann Arbor Downtown Development Area (DDA). Polygon comes from the original legal description adopted by City Council. It can and will be adjusted as the City Council makes any changes to the legal description via resolution.
Polygon parcels of land owned by the City of Ann Arbor near or in the City Boundary.To delineate the parcels of land owned by the City of Ann Arbor.
To distinguish property within the legal City limits of the City of Ann Arbor from that of the surrounding and nested townships. Polygon defining the boundary of The City of Ann Arbor. Updated as land is annexed.
Locations of public, private, County Drain Commission, and University owned catch basins/inlets as part of the City's greater storm water network.
The building outline dataset for the City of Ann Arbor. Includes the average height of the structure. Woolpert completed a semi-automated method for building generation utilizing new countywide 2009 LiDAR data and existing 2005-2008 orthoimagery. Buildings over 100 square feet were generated and run through a QC process. The final building polygons were developed for the entire ±709-square mile county area. The dataset has had all but those footprints near or within the City of Ann Arbor and contains an average building height. Updates are currently done with new construction plans and then verified using the newest aerial imagery.
Representation of PIN and address information tied to each basic land ownership unit or sub-unit within the jurisdiction of the City of Ann Arbor. Included also are other properties which are subject to possible annexation and/or provided with City services requiring payment or regulation. Points were originally generated from parcel centroids combined with PIN and address attributes and supplemented by manual addition of condominium and apartment addresses from the Address Table, Community Services staff maintains the graphic and attribute information for accuracy and consistency to use with other City mapping applications. Points are spatially adjusted as needed.
Use this interactive zoning map to learn how a parcel is zoned, and access other planning process overlays such as DDA, Historic Districts, Residental Groups, Street Frontage type, Condominium Association detail, property information, and more!
Downtown Development Authority (DDA) Bikeway Counters
Downtown Ann Arbor features the City’s first two-way protected facility, the William Street Bikeway, installed in 2019. Three others have since been added: on First Street, Division Street, and Miller-Catherine. Counters have been installed that count bikes in the bikeway and pedestrians on the adjacent sidewalk. *Note: 2023 data doesn't reflect a full year of bike and ped activity. The first counters were installed in Aug & Sept 2023. Sept 2023 contains a full month of data for the Division and William counters. Data for the Miller/Catherine counter begins on 9/5/23 in the afternoon. A fourth counter, located on First St., was installed on 10/2/24. *Bike count data does not include scooters.*
Amber Fellows, Capital Projects and Planning Manager
The Home Energy Rating Disclosure​ (HERD) Ordinance provides consumer protections by requiring that a Home Energy Score (HES) assessment be conducted before a home lists for sale. The HES Assessment produces a score and a report that will provide home buyers information on a home's potential energy use and costs. HERD makes a home's energy use easy to understand, like a miles-per-gallon/charge rating for a vehicle. Learn more on [the city's HERD webpage](https://www.a2gov.org/sustainability-innovations-home/sustainability-me/home-energy-rating-disclosure/). The City of Ann Arbor Home Energy Score Locator is an interactive map where potential home buyers can locate Home Energy Score Reports by searching by address, square footage or score.
Interactive view of Ann Arbor's floodplain. Review Elevation Certificates, Letters of Map Change (LOMCs), and cross-sections from FEMA.
Ann Arbor's Champion Tree program identifies and catalogs the largest tree of each specie​s within the city. This map has details about each champion specimen and shows where they are located.
Planning and Community Services Area permits are shown on a map. Applications to STREAM are plotted and can be filtered by year and type/category of permit. To explore permits in more detail, visit [the STREAM website](https://stream.a2gov.org/EnerGov_Prod/selfservice#/home).
This dashboard shows year-to-date crime statistics for the City of Ann Arbor, comparing values against the same time period in the preceding year. Users can analyze incidents by geographic region and/or NIBRS category (type of incident). Updated weekly, information subject to change based on investigations.
Web map application depicting organizations and businesses that are considered participants in the Ann Arbor area circular economy.
Take a tour through along the original path of Allen Creek through this map and see historic photos from various points. You can learn more about the history of Allen Creek [here](https://www.a2gov.org/systems-planning/water-resources/stormwater/historic-allen-creek/).
Analysis of crash types and frequencies. See also the "Traffic Crash Map" listed in this open data portal and context about both resources at [https://www.a2gov.org/crashreporting](https://www.a2gov.org/crashreporting).
Map of all street trees, with charts showing breakdown by species and size, as well as annual pruning and planting activities in relation to annual goals.
Map that shows location, current actions, and overall progress of city snowplows in real-time via automated vehicle tracking.
The city has deployed a network of air quality sensors. The vendor, Clarity Movement, maintains a map that shows real-time air quality using this data. Type in an address, scroll, or share your device's location to see your area. Then click on any of the colored circles to browse other data locations. You can "follow" a location to sign up for email alerts that will notify you when air quality hits a certain threshold. The city operates its own dashboard for exploring historical air quality data in more depth; search this catalog for "Air Quality" to find it.
The Natural Area Preservation (NAP) Photo Monitoring Project began in the mid-1990s as a way to monitor ecological changes throughout Ann Arbor's beautiful natural areas over time. The effects of invasive species removals, prescribed fire, erosion, and natural vegetation cycles are all evident in these photos. Thanks to the efforts of our incredible staff and volunteers, each point on this map has precisely-taken photos that show how the vegetation and landscape changes from year to year in the exact same spot.
Pavement Condition and Planned Road Improvements
This Story Map contains a series of maps and charts that display pavement condition in relation to the city's goals, as well as current and future year street and utility projects that will improve pavement conditions.
​Explore an interactive dashboard showing progress on the [A2ZERO Plan](https://www.a2gov.org/sustainability-innovations-home/carbon-neutrality-home/). The dashboard includes data on emissions in Ann Arbor and progress on actions to address them. Information on the dashboard covers: - Greenhouse Gas Inventory - A2ZERO Strategy 1: Renewable Energy - A2ZERO Strategy 2: Electrifying Vehicles and Appliances - A2ZERO Strategy 3: Energy Efficiency - A2ZERO Strategy 4: Transportation - A2ZERO Strategy 5: Circular Economy - A2ZERO Strategy 6: Community Resilience - Community Engagement The dashboard is best viewed on a computer.
Sidewalk Gaps Prioritization and Progress
Map and charts showing the gaps in Ann Arbor's sidewalk network, progress toward filling these gaps, and prioritization of remaining gaps. For more information on new sidewalk construction, visit the city's [new sidewalks FAQ page](https://www.a2gov.org/engineering/new-sidewalks-faq/).
Explore this map tour of public art installations throughout Ann Arbor.
Find Public Seating in downtown Ann Arbor
Map of constructed, in progress, and previously petitioned traffic calming streets. For more information see the [traffic calming webpage](https://www.a2gov.org/trafficcalming).
The City of Ann Arbor conducts annual fire hydrant flushing beginning every spring and continuing on a weekly basis through the fall. This preventative maintenance and inspection ensures the proper functioning of the water system. This map shows progress through the different districts of Ann Arbor.
This dashboard & map track the inventory of water service line materials and the city's progress toward replacing galvanized water lines, as part of [its compliance efforts under Michigan's Lead and Copper Rule (LCR)](https://www.a2gov.org/public-works/lead-and-copper-rule/).
Monitor the city's progress toward its annual goals of inspecting its sanitary pipes. Some of these inspections are done with cameras (CCTV), others are done acoustically. Change which fiscal year's progress is shown using the selector in the top-right corner.
Monitor the city's progress toward its annual goals of cleaning catch basins. Also includes a map of which catch basins have been cleaned this cycle. Change which fiscal year's progress is shown using the selector in the top-right corner.
Map of street tree pruning areas and pruning cycle years.
Graphs of the solid waste tonnages and percentages, broken out into organics, recycling, and trash. This aims to provide a picture of all residential and commercial waste generation in the city and includes material hauled by the city's trash, recycle, and compost trucks, commercial trash hauled by a contractor (Waste Management), and recycling hauled by Recycle Ann Arbor. The compete monthly dataset is available for download elsewhere in this data portal.
Jenny Petoskey, Solid Waste Program & Outreach Specialist
View Small Cell Wireless Facility Locations
Monitor the city's progress toward its annual goals performing CCTV inspections on its stormwater pipes. These include collectors, inlet leads, and culverts. View activity by fiscal year by using the selector in the top-right corner.
Learn More about the Ann Arbor Housing Commission
Search and Print Historic Plat Maps in the City of Ann Arbor
Ann Arbor Greenbelt Boundary Map, includes city council approved project, preservation lands and more.
Active City Construction - Road and Utility Projects
See what roads are planned to be treated in the current construction season, among other City capital projects. See the city's [construction webpage](https://www.a2gov.org/engineering/construction-projects/) for more information.
Geospatial analysis of traffic crash density and locations of certain crash types and severities for the previous five years of data. See also the Traffic Crashes Dashboard on the Open Data Portal and context about both resources at the [Crash Reporting webpage](https://www.a2gov.org/crashreporting).
Stormwater Impervious Surfaces and Credits
This map shows the amount of impervious area by parcel that is used to determine stormwater utility fees, as well as what stormwater rate credits a particular site currently qualifies for. Click on a polygon information to see more information. *If this map loads slowly or not at all, try zooming in.*
A comprehensive transportation map including information on streets and street-related assets and non-motorized/pedestrian facilities throughout the city. For more on current efforts and programs, see the [city's transportation webpage](https://www.a2gov.org/transportation).
Map displaying what streets are currently under a street-cut moratorium, streets that will be added to the list in the current construction season, and when the moratorium will be lifted.
Drinking Water Quality Measures Dashboard
Ann Arbor Water publishes sample results about the composition of the city's award-winning drinking water. See the mineral content of the water in nearly real-time.
Becky Lahr, Drinking Water Quality Manager
Drinking Water and Source Water 1,4-Dioxane Monitoring Dashboard
City drinking water comes from the Huron River and groundwater wells that are monitored regularly before and after treatment to ensure the drinking water remains safe from 1,4-dioxane and other contaminants. This dashboard shows the results of this monitoring and includes context and links for why this monitoring is necessary. You can also download the raw sample data from the dashboard.
Major Street Mid-Block Crosswalk Streetlight Needs
This map-based dashboard the status of streetlighting at major street mid-block crosswalks throughout the city. See lighting upgrades by year and prioritization of remaining crosswalks.
The city operates a network of air quality sensors. The vendor, Clarity Movement, hosts a [real-time map showing live air quality](https://map.clarity.io/a2aq/) and offers the ability to sign up for alerts. That map only shows thirty days of data and makes it hard to compare across stations. This historic dashboard shows *all* of the city's historic air quality data and offers a greater variety of visualizations.
The City of Ann Arbor's Police Department has developed a [comprehensive enforcement strategy plan](https://a2gov.legistar.com/View.ashx?M=F&ID=14048040&GUID=5134FC73-1E5D-4B93-81E9-4D3D3DB93298) to improve the safety and accessibility of bike lanes by addressing parking, driving, and object placement violations, with efforts spanning public outreach, enforcement, and education. This initiative includes a data visualization platform that displays time data on police dispatch calls, citations for bike lane obstructions, and A2 Fix It requests related to vehicles and curb carts in bike lanes, with an interactive heatmap available under the ‘spatial’ tab to identify hotspots. The data is refreshed during the first week of the month, providing valuable insights to support ongoing efforts to foster a safer environment for cyclists, pedestrians, and drivers.
An interactive way to visualize rainfall data collected from the city's five tipping-bucket rain gauges, going back to 2013. The raw data behind this dashboard is also available to download as a dataset elsewhere on the city's open data portal. For a simpler, more mobile-friendly version of the dashboard, see [https://analytics.a2gov.org/superset/dashboard/rain-gauges-basic/?standalone=2](https://analytics.a2gov.org/superset/dashboard/rain-gauges-basic/?standalone=2).
Map showing permitted marijuana businesses, including type of business and 600 ft buffer zone.
Map showing where ADUs have been constructed along with a zoning layer showing where they are permitted.
Locate all the memorials and dedications in city parks
Map showing progress of city street sweeping: what has recently been completed, what's in-progress, and what's next.
During a snow emergency, the city can call [a ban on on-street parking for the purpose of expediting snow removal](https://www.a2gov.org/public-works/street-maintenance/on-street-snow-parking-ban/). This map indicates the streets on which the ban will be enforced.
By default, snow removal from sidewalks is the responsibility of the adjacent property owner. This map indicating the sections of sidewalk on which snow removal is the responsibility of the City of Ann Arbor.
Natural Features Inventory Interactive Map
This is an interactive display of the city natural environment including open space, natural areas, contours, floodplain, wetlands, forest fragments, street trees, and the urban forest canopy. Includes the ability to measure and print.
Interactive dashboard of the city's six-year capital improvements plan (CIP), including project locations, projected budgets, and scheduling. For more information on the CIP see the [full CIP webpage](https://www.a2gov.org/systems-planning/capital-planning/).
The City of Ann Arbor aims to fill potholes within 72 hours of receiving the request. This dashboard shows the number of pothole filling service requests received, average time to complete, and on-time percentage. You can see data from prior years by clicking "select a date" in the upper right.
Barton Dam flood inundation map that includes a tool to determine whether your address is in the inundation zone.
"Regulatory Floodway" means the channel of a river or other watercourse and the adjacent land areas that must be reserved in order to discharge the base flood without cumulatively increasing the water surface elevation more than a designated height. Communities must regulate development in these floodways to ensure that there are no increases in upstream flood elevations. For streams and other watercourses where FEMA has provided Base Flood Elevations (BFEs), but no floodway has been designated, the community must review floodplain development on a case-by-case basis to ensure that increases in water surface elevations do not occur, or identify the need to adopt a floodway if adequate information is available. Created by Systems Planning based off of FEMA floodplain info. In the process of being updated based on newest FEMA data.
That portion of the river valley, adjacent to the channel, which is built of sediments deposited during the present geological / climatic regime. Based on statistically derived hydrologic recurrence intervals, a portion of the land adjacent to the watercourse experiences bank full overflow during flood stage episodes. Source is FEMA FIRM Mapping.
Browse a map of the city's 162 parks, clicking on them to see amenity details and parking options. Or search for a park by name, or by amenity (say, "grill").
A2OpenBook is an online tool designed to disclose all City of Ann Arbor expenses in a transparent, simple and easy to use format. This includes expenses, revenues, vendor payments, and purchase card ("P-Card") transactions.
Neighborhoods of Ann Arbor, built from the public safety program.
To assist City of Ann Arbor Planners and staff guide future Land Use development towards a pre-determined goal. Polygon boundaries of the future Land Use designations as defined by the 4 City Area plans (one per Planning Area).
Locations of the Ann Arbor Area Transportation Authority Bus Stops within the AAATA Service Area as provided to the City of Ann Arbor GIS. For the most recent bus stop information, please use the [Contact Us" section of TheRide's website](https://www.theride.org/about/contact-us).
Browse the map or search by address, owner, or PIN (parcel identification number). Click on a parcel to learn more about it, then see the links to further details in the BS&A Assessing platform.
The City of Ann Arbor was awarded $24.2 million in funds under the American Rescue Plan Act (ARPA). This page reports on the budgeting of those funds and provides monitoring of their expenditure.​ The city has created a dashboard that provides an overview of how ARPA funds have been budgeted. It includes high-level information about each project and its expenditures to date.
The city has long tested for Per- and polyfluoroalkyl substances (PFAS) in its water supply, both in the river and well sources and the finished drinking water. This dashboard shares all of our sampling data in both tabular and graph form.
Document describing the nature of this dataset and what each field consists of.