Davidson River · hatch chart
Fishable all year; the hatchery-supported reach holds fish through winter
By month
JanFebMarAprMayJunJulAugSepOctNovDec
| Month | Insect | Stage | Size | Time | Intensity |
|---|---|---|---|---|---|
| Mar | Blue Quill (Paraleptophlebia) | Dun | #16 | 12:00-15:00 | |
| Apr | Quill Gordon (Epeorus) | Dun | #14 | 11:00-15:00 | |
| May | Sulphur (Ephemerella) | Dun | #16 | 18:30-20:30 | |
| May | March Brown (Stenonema) | Dun | #12-14 | 11:00-15:00 | |
| Jul | Little Yellow Stone (Isoperla) | Adult | #14-16 | 11:00-18:00 | |
| Aug | Terrestrials — ants and beetles | Adult | #14-18 | 10:00-17:00 | |
| Oct | Blue-Winged Olive (Baetis) | Dun | #18-20 | 13:00-16:00 | |
| Dec | Midges (Chironomidae) | Pupa | #20-24 | 11:00-14:30 |
Flow and visibility
The Davidson is a forest stream and its flow is driven by summer thunderstorms; a 40 mm storm can take it from 80 to 400 cfs in two hours and it drops almost as fast. The catch-and-release reach holds its temperature well because of the rhododendron shade, which is why it fishes in July when the lower river is too warm. After a spate the fish are usually back on the feed within 24 hours.