Carolina Cuellar/arizona Luminaria, The Associated Press

Tucson migrant advocates have designed a new tool to help track immigration-related enforcement in and around the city as arrests surge under President Donald Trump’s mass deportation initiative.

Tucson Migra Map allows people to document and visualize enforcement activities by Immigration and Customs Enforcement and other federal agencies. While revealing patterns, the tool also raises questions about safety, transparency and the limits of public tracking tools.

“It indicates the level of chaos and how disruptive it is to our community,” activist Lucia Vindiola said in a statement. Vindiola launched the mutual aid group La Bodega to provide groceries and other help to people affected by increased enforcement.

“We are seeing firsthand the impact on families, limiting them from shopping for groceries and supplies,” Vindiola said.

In the year since Trump took office, immigration-related detentions have more than tripled in fiscal year 2025 — surging from less than 200 in late 2024 to more than 800 by June 2025. The response in communities nationwide has been swift, with groups such as the Tucson Rapid Response network organizing to monitor and track federal immigration action on the street.

Geographer Dugan Meyer, one of the map’s creators, is a Ph.D. student at the University of Arizona who volunteers with Tucson Rapid Response and other related organizations.

“This project came out of the documentation work that Rapid Response is doing, but also around the city,” Meyer said. “It is a community research project, community mapping project.” The data is pulled from spreadsheets maintained since January 2025 that tracks and documents federal enforcement actions in greater Tucson such as raids, vehicle stops and aerial surveillance.

Included is the December raid at one of several targeted Taco Giro locations where U.S. House Rep. Adelita Grijalva was pepper sprayed by federal agents.

Incidents on the map are vetted and classified as “confirmed” or “credible but unconfirmed” based on the level of evidence.

“If we have photographs of, say, an agent wearing a tactical vest that says ICE, that’s confirmed,” Meyer said. “Credible unconfirmed, we’re very confident something happened.”

Meyer said a trained Rapid Response observer witnessing an event, even if they had not photographed it, would be an example of a credible unconfirmed event.

“Their testimony about that would be enough for us,” he said.

Hundreds of people, including non-citizens, have contributed their eyewitness accounts of immigration enforcement to the map and the database it draws from, according to the Tucson Migrant Map website. Information from the local news is included, along with reports collected by Rapid Response and other neighborhood networks such as Migra Watch, and information shared on social media and in WhatsApp groups.

Rapid Response member Steven Davis has documented five incidents, including one in which he was pepper sprayed by law enforcement. He says having these incidents recorded and published furthers his efforts to better show people what ICE is doing in their community.

“The value of the observation is that we take this out of the shadows and get it out into the public,” Davis said. “The Migra Map is a public facing map that makes visible this activity that is mostly behind the scenes.”

Davis said knowing the data he collects will be used for Migra Map makes it more important for him to document diligently.

“There’s the saying garbage in, garbage out. I want to make sure that the information that I’m providing is the most accurate information that I can possibly provide,” Davis said.

Meyer said that as of late April, the team had reviewed around 562 incidents, with about 300 meeting the threshold to be included. The goal is to review reported incidents within a week, then add qualifying cases.

“We know that the map is an undercount by any estimation,” Meyer said.

The map also includes police facilities and immigration detention facilities, along with flight paths of various federal agencies’ surveillance flights.

The accuracy of the reporting has been confirmed as more data is gathered, said Meyer. For example, repeated vehicle reports often confirm instances of surveillance.

Meyer said he hopes that the map will ultimately become a platform for information accessible to the public.

He said he thinks the map “can show in a way that people may know intuitively already.”

“It really helps us think about directly when we can see these things in relation to each other,” he added.

Meyer said that makes it easier to identify trends and point out hotspots like El Super grocery store on Tucson’s south side, which is frequented by mostly Latino customers and has seen a high concentration of enforcement.

“It’s used as a hunting ground for that, but there are others as well,” Meyer said, such as specific apartment complexes targeted by ICE or other agencies.

The Tucson Migra Map was not the first of its kind.

Last year, an initiative called People over Papers was used nationally to track immigration enforcement before being shut down by its host site, Padlet, for violations of its content policy.

Federal officials have said such tracking puts officers at risk, and other tracking sites, including ICEBlock, were previously taken offline after the Trump administration called for their removal.

Meyer said he hopes the Constitution’s protection of free speech will protect Migra Map from a similar fate, and that people in other places will be encouraged to launch their own initiatives.

Davis, the observer, said that unlike the earlier trackers, the Migra Map doesn’t attempt to alert people to events occurring in real time, but reports enforcement actions after the fact.

“It doesn’t tell you where ICE is active right now. It tells you where ICE has been active in the last months,” Davis said. “You could file a Freedom of Information Act for the Tucson District Office and get the exact same information that we’re providing on the map.”

Meyer also noted that he and the other developers have been public about the project.

“It’s not a crime to collect this information and share this information,” said Meyer.

Nonetheless, some contributors opt to report anonymously out of fear.

“I think that anyone paying attention is at the very least concerned” about the current administration, Meyer said. He said he feels privileged he can publicly associate with the project.

But he allowed that Migra Map is far from perfect.

“The important thing is that it doesn’t tell us a lot,” Meyer said. “While many people would like it to be a real-time alert system, this map can’t be that,” he said.

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This story was originally published by Arizona Luminaria and distributed through a partnership with The Associated Press.

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