The dataset contains the ArcGIS shapefiles of watershed boundaries large regional river basins of Kazakhstan and Central Asia, and water management basins of Kazakhstan. The archived dataset has four folders: A) North Central Asia v2a with watershed boundaries of 1) Zhaiyk-Caspian, 2) Tobyl, 3) Torgai, 4) Sarysu, 5) Nura, 6) Vagay, 7) Yesil, 8)Yesil-Ertis closed basin, 9) Ertis 10) Ob-Ertis closed basin; B) Southern Central Asia v3a with waterhsed boundaries 11) Amu Darya-Aral, 12) Syr Darya-Aral, 13) Shu-Talas, 14) Ily-Balkhash-Alakol; C)Hydro-regions: the merged boundaries of (A) North Region and (B) South Region. These basin boundaries are based on HydroAtlas (levels 3-5) https://www.hydrosheds.org/hydroatlas. D) The boundaries of water management basins of Kazakhstan: Aral-Syr Darya, Balkhash-Alakol, Ertis, Nura-Sarysu, Shu-Talas, Tobyl-Torgai, Yesil, Zhaiyk-Caspian. This dataset is a supplementary data to the article Yapiyev, Vadim, Nurlan Ongdas, Zarina Saidaliyeva, Abdikaiym Zhiyenbek, Tomiris Smogulova, Marzhan Baigaliyeva, and Egor Prikaziuk. 2025. “Baseline Information and Regionalization of the Large River Basins of Kazakhstan.” Frontiers in Water 7: 1601671. doi:10.3389/frwa.2025.1601671