Observed arrival · 2026-10-10
HydroRational: a San Diego hydrology workbench
A beta app for building drainage studies against the 2026 San Diego County hydrology manual, from rainfall and subareas through network analysis and reporting.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Engineers preparing San Diego drainage studies
- Worth noticing
- Watershed delineation derives a boundary, area, overland reach and watercourse from terrain; edits made afterward are retained.
Field notes
The interface divides a study into site and rainfall, subareas, conveyance, and analysis/reporting. Terrain inputs include survey or proposed surfaces in several formats, while listed public layers cover elevation, soils, flood hazards, hydrography, wetlands and land cover. Its watershed tool says edits to terrain-derived boundaries and nodes are retained.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
⊠LoginAccess appeared gated
✦PrettyNotable craft visible
◎NicheUnusually specific use
One card from the complete issue