One Slide Deck, Two Continents: The Yogyakarta Undergrad Who Brought Flood Mapping to Austin

The seminar room at Universitas Negeri Yogyakarta held maybe forty people, a projector with a flickering bulb, and a whiteboard that refused to erase cleanly. It was there, in early 2024, that Rani Prasetyowati, then a fifth-semester geography student, delivered a twenty-minute presentation on community flood mapping along the Code River watershed. Fourteen months later, a version of that same talk was delivered on a stage in Austin, Texas, at one of the country's most prominent innovation festivals.

Her path between those two rooms says as much about how research travels as it does about the research itself.

A Map Drawn by the People Who Live It

Prasetyowati's project began as a class assignment that outgrew its syllabus. Rather than relying solely on satellite imagery or municipal data, she trained residents in three riverside neighborhoods to document flood boundaries themselves, using WhatsApp voice notes, hand-drawn sketches, and a free mapping application most American students download without thinking twice.

The result was a flood-risk composite that captured something official datasets missed: the informal drainage paths, the house elevations, the unofficial evacuation routes that residents knew by memory. When the municipal disaster agency later requested her data, it validated a premise that had guided the entire project — that the people closest to a hazard often produce the most actionable knowledge about it.

"I had no drone, no grant, no lab," she told festival attendees. "I had a phone, a notebook, and neighbors who wanted their street on a map."

The Austin Moment

How the talk reached Texas involves an unlikely chain. A visiting American lecturer attending the Yogyakarta seminar shared the recording with a colleague at a Texas university, who forwarded it to a festival programming committee scouting international research on civic technology. Prasetyowati's presentation — delivered in careful English, with slides that relied on photographs rather than animation — was selected for a panel on community-driven innovation.

American audiences responded to what festival organizers later described as the talk's "operational humility." There was no proprietary software, no six-figure instrumentation, no institutional apparatus. The methodology fit on a single slide, and that was the point.

What US Students Can Take From It

For American undergraduates accustomed to well-funded labs and institutional subscriptions, the Yogyakarta example offers practical lessons that translate across contexts:

• Treat constraints as a design parameter. Prasetyowati's lack of equipment forced simpler, more replicable methods — a neighbor could repeat her survey with nothing but a smartphone.
• Let participants co-own the data. Community members reviewed and corrected her maps before publication, improving accuracy and building trust that no survey incentive could buy.
• Present the process, not just the findings. Festival attendees engaged most with how the work was done, a reminder that methodology is a story, not an appendix.
• Record everything. A grainy video of a campus seminar became the portfolio that opened an international door.

The Larger Current

Prasetyowati's trajectory is unusual but not singular. Indonesian undergraduate research increasingly circulates through digital academic platforms that make provincial seminar work discoverable far beyond campus walls. American researchers who once treated such work as peripheral are beginning to recognize that some of the most instructive methods in hazard research, community informatics, and low-cost field science are being refined in exactly these settings.

Back in Yogyakarta, Prasetyowati is finishing her thesis and training a younger cohort of students to continue the river mapping. The flood data, like the flood itself, keeps moving downstream — now with a wider audience watching.