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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... -
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... -
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. -
Allen Creek Historic Map
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. -
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... -
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... -
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...