Reach Pages
What is a reach?
A reach is a defined section of river with a put-in and take-out. It's the atomic unit of the H2OFlows registry — everything else (rapids, flow ranges, conditions reports, hazard warnings) attaches to a reach.
Reach page sections
Overview
- Reach name, slug, and class rating
- Current conditions summary
- Linked gauges with live CFS and flow band
Rapids
Rapid-by-rapid inventory with:
- Name and class rating
- GPS coordinates
- Description (AI-seeded, community-verified)
Access
Put-in and take-out points with:
- GPS coordinates (latitude / longitude)
- Access notes
- Parking information
- Shuttle drop points
Flow ranges
Community-defined CFS bands for this reach. Shows the full band table — Too Low threshold, Minimum, Optimal window, Pushy, Flood.
Conditions reports
Word-of-mouth reports from paddlers who ran this reach recently. Auto-expires after 7 days. Includes:
- CFS at time of report
- Runability assessment
- Notes
Data provenance
Reach data is seeded using AI (Claude) from guidebook knowledge, American Whitewater records, and community trip reports. Every item carries a data_source field:
| Source | Meaning |
|---|---|
ai_seed | Generated by AI seeder, pending verification |
import | Imported from a KMZ file |
maintainer | Manually authored, high confidence |
community | Contributed and verified by community |
AI-seeded items below confidence 50 are dropped at generation time. Items at or above 85 are auto-verified. Items in the 50–84 range are stored as drafts and shown with a confidence badge until a community member verifies them.
Finding reaches
Use the Explore page to browse reaches on a map. Filter by region, class rating, or whether flow data is available. Click any reach pin to open its detail page.
Reaches also appear as linked items on gauge cards in the dashboard when a gauge is associated with one or more reaches.