Colorado River flows steady as fall temperatures settle in

What's next

With discharge at the upstream gauge holding steady, flow should stay in a similar range over the next few days. This stretch of the Colorado is dam-regulated, so short-term swings in release are uncommon. The modest warming trend downstream, from 67°F up near 69°F, should hold steady or inch up slightly while daytime air temperatures linger before the seasonal cool-down accelerates later in October.

The waning crescent moon this week brings darker mornings and evenings, a window worth planning around for anglers who favor low-light conditions. Barring any unannounced release change, consistency rather than a dramatic shift is the story heading into the weekend.

Context

Early October marks the start of the cool-season transition for Arizona's river fisheries. Water temperatures in the mid-to-upper 60s are typical for this stretch of the Colorado as the system moves from summer highs toward winter lows, a shift that generally favors increased fish activity as water cools. Flows here are dam-regulated, so seasonal change shows up more in temperature than in discharge. Check current state regulations before harvesting, since seasonal rules can shift this time of year.