Getting Started
Introduction
H2OFlows — open source streamflow platform for whitewater paddlers.
H2OFlows is a free, open source gauge dashboard for whitewater paddlers. It aggregates live streamflow data from USGS and Colorado DWR, overlays community-defined flow bands, and ties gauge readings to a reach registry — so you can see at a glance whether your run is on.
What H2OFlows does
- Gauge watchlist — add any USGS or DWR gauge to a named dashboard; see live CFS, trend, and 48-hour sparkline
- Flow bands — community-defined ranges (Too Low / Minimum / Optimal / Pushy / Flood) overlaid on every reading
- Reach pages — put-in/take-out coords, rapid inventory, access notes, linked gauges
- Multi-dashboard — keep "Front Range Daily" and "Road Trip" dashboards separate
- Public API — all reach and gauge data freely accessible at
api.h2oflows.app
What it doesn't try to do
H2OFlows is not a social network. Discord, Facebook groups, and SMS handle real-time word-of-mouth well. H2OFlows fills the gap they can't: structured, geographically precise river data tied to real-time conditions, queryable by any tool.
Open source
The full codebase is open source under a permissive license.