Pick a date. See in one view where the best conditions are. Index takes into account reach-specific flows, temperature, salmon and steelhead run timing, hatches and fresh shop reports.
Open the mapFree. Install it on your phone.
When & Where
Every section of the rulebook transcribed and traced onto the regulated water. Not a pin on a river's name: the line stops where the rule says it stops, at a dam, a bridge, a confluence. District general regulations overlaid on the map to display rules outside of special regulated waters and exceptions.
Tap it and you get the water the rule describes, the season, the daily bag and whether it is open today.
For information only, not legal advice. Always check the official CDFW regulations before fishing.
When
Each reach gets its own bands — blown out, high, good, low — set where the fishing changes, not where today's number sits against history.
Flow and water temperature come from USGS and NOAA gauges, matched to the stretch of river they actually measure — not to a river's name.
When & How
A month-by-month picture for every mapped river: when a run arrives, peaks, holds and spawns, whether it is wild or hatchery-supported, and how much conservation concern it carries.
Switch to trout to see a hatch calendar. Pick a river and you get its hatches month by month — green drake, salmonfly, October caddis — graded active, peak or super hatch, each with recommended patterns.
Who says so
Fishing reports published by guides and shops, pinned to the water they are about. Each links back to the author, so you can book a guide, ask for local intel or pick up what you need.