The phrase identifies a periodic dissemination of information concerning angling conditions on a specific waterway. This information typically includes details regarding water levels, clarity, insect hatches, and species being caught. As an example, such a communication might state that the creek is experiencing low flows, a mayfly hatch is occurring in the afternoon, and anglers are finding success with small nymphs.
Access to such condition updates provides crucial advantages for those planning a trip. It allows anglers to make informed decisions about tackle selection, fly patterns, and optimal times to fish. Historically, this type of intelligence was gathered anecdotally through local tackle shops and word-of-mouth; now, however, it is frequently available online, providing a more widespread and readily accessible resource. This ensures anglers can optimize their chances of a successful and enjoyable experience.