AHFM Water Quality Data from Thirteen Watersheds Across China, 2021-2025

Water quality datasets collected from thirteen typical watersheds across China between 16 June 2021 and 31 December 2025, with a four-hour sampling interval. The data includes eleven indicators such as water temperature, pH, dissolved oxygen, and nutrient concentrations. Raw data was sourced from the China National Environmental Monitoring Center's National Surface Water Quality Automatic Monitoring Data Release System.

Use Cases

• Forecasting water quality parameter trends based on high-frequency time-series data
• Analyzing correlations between different water quality indicators like nutrients and algal density
• Training models to predict algal blooms based on Chlorophyll-a and nutrient concentrations
• Assessing the impact of seasonal or environmental changes on water quality across diverse Chinese watersheds

Strengths

• High-frequency four-hour sampling interval provides detailed temporal resolution
• Covers eleven key water quality indicators including physical, chemical, and biological parameters
• Data spans over four years from mid-2021 to the end of 2025
• Sourced from the authoritative China National Environmental Monitoring Center

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count is unknown, which may limit suitability assessment
• Data may reflect geographic bias inherent to the thirteen selected watersheds in China

Provenance

Source

China National Environmental Monitoring Center (National Surface Water Quality Automatic Monitoring Data Release System)

Collection Method

Automated monitoring with a four-hour sampling interval

Time Range

16 June 2021 to 31 December 2025

Freshness

Last updated 2026-06-04 02:01:43

Geography

Thirteen typical watersheds across China