Why the Yellow River Runs Clear at Guide

In July 2026, a report published by the Hainan Prefecture government described the Yellow River at Guide County as clear enough for stones on the bed to be visible from the bridge. The account linked that appearance partly to sediment settling in the Longyangxia and Laxiwa reservoir areas before the river entered the county. In the Guide Basin, the river then moves more slowly across gentler terrain, allowing additional sediment to settle. The familiar phrase “the Yellow River is clear at Guide” has a physical setting: upstream reservoirs, a broad basin and water moving through a particular reach.

The 2026 report counted twelve first-order tributaries in Guide and said seven had undergone treatment by the time of publication. Along the Lanquan River, interception channels and planting were used to hold sediment near the stream. At Luhua Bay, treated wastewater passed through gravel and other media, then through a wetland system before flowing toward the Yellow River. The report follows water through reservoirs, tributary channels, planted slopes and a constructed wetland, each playing a different role. Separate county monitoring results show that the Huanghe Bridge section was Class I in April and May 2025 and Class II in June. The two records describe both a chain of water-management work and month-to-month variation at a named monitoring point.