Dnipro River (Kyiv, Ukraine) 2024 hydrochemical monitoring across an urban gradient (km 825–897)

Hydrochemical monitoring data for the urban segment of the Dnipro River in Kyiv, Ukraine (Jan–Nov 2024), sampled across river-kilometre 825–897 to represent an upstream → urban core → downstream gradient. The CSV (Dataset_2024.csv, UTF-8, comma-separated, ISO dates) includes: - Date (YYYY-MM-DD)- NH4_N_mgL — ammonium as N (mg N/L)- BOD5_mgO2dm3, DO_mgO2dm3 — 5-day BOD and dissolved oxygen (mg O₂/L)- Suspended_mgL — suspended solids (mg/L)- NO3_mgL, NO2_mgL, SO4_mgL, PO4_mgL, Cl_mgL — nitrate, nitrite, sulfate, phosphate, chloride (mg/L)- River_km — river chainage (km) Data sourced from the Ukrainian Hydrometeorological Centre and the Water Agency of Ukraine. Basic quality control included unit harmonisation and range checks; the original structure is preserved for reproducibility. Note: Missing values (e.g., ~20% for PO4 and SO4) are due to measurement limitations; high NH4_N values (up to 109.6 mg/L at 855 km) reflect peak pollution near the Bortnychi Aeration Station. Intended use: urban water-quality assessment (e.g., WPI/TCI calculations), trend analysis across an urban gradient. Accompanying file sites_metadata.csv provides station metadata. License: CC BY 4.0.How to cite: Zhukova, O., Starzhynskyi P., Korduba I., Negoda N., and Prokopenko I., 2025. Dnipro River (Kyiv, Ukraine) 2024 – hydrochemical dataset (urban gradient). Version 1.0. Dataset. Zenodo. DOI: 10.5281/zenodo.16894251.Contact: Pavlo Starzhynskyi ([e-mail], ORCID: 0009-0004-4495-9309).