Delta anglers eye tidal swings as fall transition sets in

What's next

With the moon in a waning crescent phase, tide ranges should stay moderate through the weekend rather than swinging to the extremes that come with a new or full moon, which widens the window of fishable current rather than concentrating it around one sharp peak. Expect the slack-tide turns near gauge 11455420 to matter more for timing a trip than the clock on the wall.

If the inflow at gauge 11447650 holds near its current 9,510 cfs and 67°F, the cooler river water should keep mixing into the warmer 72°F interior channels gradually rather than triggering a sudden temperature drop. That argues for a stable few days rather than a sharp shift, with the best planning move being to work trips around the tide turns in the lower system and the steadier flow in the interior.

Context

Low-70s water in the interior Delta alongside a cooler, moderate-volume Sacramento inflow is typical for early October, as the system eases from summer's warmer, more stratified channels toward the higher-flow, tide-dominated pattern that defines the Delta through late fall and winter. That puts this week on schedule for the season, with tidal influence already outweighing river discharge as the dominant short-term driver in the lower system.