Shuize Bei, Water gauge monument in Ningbo, China.

Shuize Bei is a group of river stone tablets at the former Pingqiao River on Zhenming Road in Ningbo's Haishu District. The stele bears the character "平" (ping, "level"), marking the city's unified water-level standard. The site includes a reconstructed four-pillar pavilion with a single-eave hip-and-gable roof on a Southern Song square platform 4.6 m per side; the Ming (1533) and Qing (1846) steles are re-erected beside the restored waterway.

This monument was established in the imperial period to track and document water levels at a specific location. The recorded data enabled local administrators to manage the region's water resources more effectively.

The stele bears the character "Ping" (平, "level"), and the name Pingqiao Bridge and Pingqiao River come from it. Wu Qian wrote the Pingqiao Shuize Ji explaining how the mark worked: when water covered the character, the sluice gates were opened; when it fell below, they were closed to store water.

The monument sits near Ningbo's city center and is reachable by public transportation options. Several bus lines stop within easy walking distance, making it straightforward to visit from downtown.

The character 平 on the stele aligns with three elevations above the Yellow Sea datum: 1.62 m, 1.36 m and 1.09 m. The middle mark, 1.36 m, sits close to the river's usual level of 1.33 m, so the stone still reads the water today.