The Jefferson River is currently low, warm, and filled with algae, prompting Hoot Owl restrictions that ban fishing from 2 PM to midnight. Ideal fishing conditions may return in September after irrigation ends, increasing fish activity. For now, anglers should seek cooler waters and wait for the river to recover.

The Jefferson River is fishing tough but doable in early spring. Slow down, get deep in softer inside water, and plan around late morning through mid-afternoon. Here’s the latest Jefferson River report from Fins and Feathers (2/5 on March 9, 2026), including the nymph and streamer patterns producing now.