Sacramento-Delta water holds in the upper 60s as fall transition sets in

What's next

With the moon in a waning crescent phase heading toward new moon later this week, low-light hours around dawn and dusk should stay the most productive window, especially while water sits in this comfortable high-60s range. If the current trend holds, expect temperatures to ease another degree or two toward the mid-60s over the next several days as nights lengthen through mid-October.

The flow reading at 11447650 is worth watching into the weekend. A steady 9,510 cfs suggests stable conditions rather than a pulse event, which typically means a calmer, more predictable bite than periods of rapid flow change. Plan trips around early morning and late-afternoon hours while the system holds in this transitional range, before the next cooling step pushes water further toward winter patterns.

Context

Upper-60s water in early October is on schedule for the Sacramento-Delta's fall transition. This is the stretch where summer patterns typically give way to more moderate conditions, with surface temps generally continuing to slide toward the mid-to-upper 50s by late October and into November. Nothing in the current readings points to an early or late shift versus that normal seasonal arc.