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Air Quality Sensor Data
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-... -
Rainfall at City-Operated Rain Gauges
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... -
Rain Gauges Dashboard
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... -
A2ZERO Dashboard
Explore an interactive dashboard showing progress on the A2ZERO Plan. The dashboard includes data on emissions in Ann Arbor and progress on actions to address them. Information... -
Catch Basins
Locations of public, private, County Drain Commission, and University owned catch basins/inlets as part of the City's greater storm water network. -
Parks
Parkland property for conservation, land development planning, park and recreational planning. -
Greenbelt Properties
Polygon properties preserved under the Open Space and Parkland Preservation Millage of 2003, and beyond -
Street Trees
Location of City Street Trees -
Non City Open Spaces
Identify open space within close proximity or within The City of Ann Arbor, not managed by a city department -
Greenbelt Boundary
Boundary of The City of Ann Arbor Greenbelt as part of the Open Space and Parkland Preservation Millage of 2004. Updated as requested by the Greenbelt Advisory Commission.... -
Floodplain
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... -
Floodway
"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... -
Home Energy Score Locator
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... -
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... -
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.