Stay away from fast-moving water and electricity hazards. From a dry safe vantage point, photograph the flood — wide shots are more useful than close-ups. Add a note about depth (e.g. "ankle deep", "blocking lane 1") and submit.

Use Flooding when water is actively pooling or moving in places it shouldn't be. Use Drainage when the issue is the infrastructure itself — a blocked storm drain, broken culvert, or covered grate. The two are linked but tracked separately in Vietnam council dashboards.

Yes. During major weather events the live Ho Chi Minh City map becomes a real-time situational awareness tool — emergency responders and rescue volunteers use OpenStreetProblem to triage where to deploy. Reporting promptly during a flood is a meaningful contribution.

Yes — historical reports stay on the public map permanently. This historical data helps councils and city planners identify chronically flood-prone streets that need long-term drainage investment.