FloodNet's street-level sensors and Flood Watch's community observations record flooding in different ways, and neither tells the whole story on its own. Residents of neighborhoods that flood often wanted to use this data in advocacy and when talking to the media and elected officials, but it was hard to find and hard to read.

We analyzed both sources together with 311 complaints and data on coastal, tidal, and stormwater flooding to show how often and where each neighborhood floods. Checking the data for gaps and for differences in time scale shaped how we visualized it. We led several rounds of community sessions to learn how residents read flood data and charts, and how they wanted to tell the story of flooding in their neighborhoods. Their input shaped neighborhood reports that update automatically every six months on the Flood Info NYC website.