Lake-TopoCat: A global Lake drainage Topology and Catchment database

• Main Authors: Sikder, Md Safat, Wang, Jida, Allen, George H., Sheng, Yongwei, Yamazaki, Dai, Song, Chunqiao, Ding, Meng, Crétaux, Jean-François, Pavelsky, Tamlin M.
• Format: Dataset
• Language: unknown
• Published: 2023
• Subjects: Lake; Topology; Catchment; Drainage basin; HydroLAKES; MERIT Hydro; MERIT Hydro-Vector; Antarc*; Antarctica
• Online Access: https://zenodo.org/record/7916729; https://doi.org/10.5281/zenodo.7916729

Contact: Md Safat Sikder ([e-mail]), Jida Wang ([e-mail]; [e-mail]) Citation If you use Lake-TopoCat, please cite the following paper: Sikder, M. S., Wang, J., Allen, G. H., Sheng, Y., Yamazaki, D., Song, C., Ding, M., Crétaux, J.-F., and Pavelsky, T. M., 2023. Lake-TopoCat: A global lake drainage topology and catchment dataset. Earth System Science Data, 15, 3483-3511, https://doi.org/10.5194/essd-15-3483-2023 Data description and components This version of Lake-TopoCat was constructed using the HydroLAKES v1.0 (Messager et al., 2016) lake mask and the 3-arc-second-resolution hydrography dataset MERIT Hydro v1.0.1 (Yamazaki et al., 2019). The drainage type of each HydroLAKES lake, such as isolated, inflow-headwater, headwater, flow-through, terminal, and coastal, was determined with assistance of MERIT Hydro-Vector (Lin et al., 2021), a high-resolution river network dataset with spatially-variable drainage densities. Furthermore, the seasonal or intra-annual stability of water area in each HydroLAKES lake was calculated using six-year (2010–2015) statistics from the Global Lake area, Climate, and Population (GLCP) database (Meyer et al., 2020). For convenience, the global landmass (excluding Antarctica) was partitioned to 68 Pfafstetter Level-2 basins or regions, and the Lake-TopoCat data products were also organized based on these 68 regions, with their region or basin IDs shown in the Fig. 'Pfaf2_basins.jpg', attached to this database. Lake-TopoCat consists of five feature components, each with multiple attributes depicting lake drainage relationships. The five features are: 1. Lake boundaries: polygons of 1,426,967 HydroLAKES lakes, larger than 10 ha. File name: Lakes_pfaf_xx where, 'pfaf_xx' indicates the Pfafstetter Level-2 basin ID (shown in Fig. 'Pfaf2_basins.jpg') 2. Lake outlets: points representing outlet or pour points of each individual lake. There are multiple outlets from a multifurcation lake. We identified 1,459,201 outlets for 1,426,967 lakes, where 29,190 lakes (~2% of ...