FlussFest
A planning and live-update app for Germany's river and outdoor festivals that monitors Rhine water levels, weather, and organizer announcements, and suggests nearby alternatives when an event is cancelled.
Tourists and locals attending major German riverside festivals like Rhein in Flammen, Mosel-Wein-Fests, and Rhine fireworks
- Real-time Rhine, Mosel, and Main water-level monitoring with festival-impact forecasts and push alerts
- 'Cancelled? Try this nearby' alternative event suggestions ranked by drive time and crowd levels
- Organizer announcement aggregator pulling from city sites, local press, and festival social channels
- Refuge-tip map with ferry, shuttle, and indoor backup options for low-water or stormy days
The Rhein in Flammen 2026 ship convoy cancellation shows how climate-driven low water is now an annual threat to Germany's signature river festivals, and visitors have no single place to track contingency plans.
Rhein in Flammen Koblenz 2026 did drop its ship convoy due to low water (confirmed by SWR) and ~150,000 visitors attend that single event, but the audience is concentrated in 5 annual weekends at specific riverside locations — narrow, seasonal, geographically bounded.Koblenzer Rhein in Flammen ohne Schiffskonvoi wegen Niedrigwasser ↗Rhein in Flammen | Stadt Koblenz ↗
No competitor found bundling live Rhine water-level monitoring with festival status, alternatives, and organizer updates. Festival-app space is dominated by B2B ticketing/check-in tools (Eventim-class) for organizers, not visitor-facing live planning apps.European River Cruise Cancellations Rise in 2026 as Extreme Heat Drops Rhine and Danube Water Levels ↗Best Festival App Software | 2026 Expert Picks ↗
Free public water-level dashboards (Pegelonline, ELWIS, WetterOnline) and free organizer websites already cover the core need; festival-goers have shown weak willingness to pay for niche single-purpose planning apps in adjacent categories.Pegelonline ↗Pegel Rhein - Hochwasser, Niedrigwasser und Tendenz - WetterOnline ↗
Climate-driven low-water events on the Rhine are escalating from rare to near-annual disruptions (2022, 2024, 2026 cancellations documented), making the underlying problem structurally growing for the foreseeable future.Rhine Low Water Alters Cruise Stops Through July 19 ↗Low water levels in Europe are disrupting river cruises ↗
Trivial to build: public water-level APIs (Pegelonline/ELWIS), weather APIs, and organizer RSS/websites are well-documented and freely accessible; no ML, no auth complexity, runs as a standard mobile/web client.