DynQual: Global Monthly Hydrology and Water Quality at 10 km Resolution

Global 10 km resolution output from the DynQual model provides monthly estimates of discharge, water temperature, and key pollutant concentrations. The data includes total dissolved solids, biological oxygen demand, and fecal coliform concentrations, with a minimum discharge threshold applied for concentration calculations. Edward R. Jones of Utrecht University created this dataset, which is available via an Open Access license.

Use Cases

• Modeling global river discharge patterns based on monthly discharge data.
• Assessing freshwater pollution levels based on total dissolved solids, BOD, and fecal coliform concentrations.
• Analyzing seasonal water temperature variations in river networks.
• Studying the impact of low-flow conditions on water quality metrics based on the described discharge threshold.

Strengths

• Data is derived from a global model at a consistent 10 km spatial resolution.
• Includes multiple key water quality variables: discharge, temperature, TDS, BOD, and fecal coliform.
• Applies a specific methodological rule (0.01 m3 s-1 discharge threshold) for calculating concentrations to manage uncertainty.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and total dataset size are unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

Utrecht University

Collection Method

Derived from the dynamical surface water quality model (DynQual).

Geography

Global