Author: hcho

I gave an invited talk titled “Scalable Hydrologic Modeling: From Algorithms to Coupled Surface–Subsurface Systems” as part of the USGS New Mexico Water Science Center Seminar Series.

I recently gave a series of talks titled “Is Water Resources Engineering Ready for the Quantum Computing Era: From QUBO-SWE1D to QAOA-SWE1D and Beyond” at several institutions in Korea: The talks introduced our recent work on quantum computing for water resources engineering, from QUBO-based shallow-water modeling to QAOA-based approaches and future research directions.

MEUFL (Cho, 2026; https://doi.org/10.1016/j.envsoft.2026.107045) is now available across multiple open-source software ecosystems: Currently, the Python, R, and QGIS interfaces depend on the MIDAS C library. MEUFL is a memory-efficient upstream flow length HPC algorithm, designed for large-scale hydrologic and flow-network analysis. Making new algorithms accessible across open-source software ecosystems is an important part of translating…

HydroCS is seeking PhD students in computational hydrology and scientific cyberinfrastructure. Interested candidates should complete the initial screening form for

The Memory-Efficient Upstream Flow Length (MEUFL) algorithm is published in Environmental Modelling & Software: https://doi.org/10.1016/j.envsoft.2026.107045. 50 days’ free access until July 28, 2026 is available at https://authors.elsevier.com/a/1nEfT4sKhEkje1.

After four years as CLAWRIM (Computational Lab for Advanced Water Resources Informatics and Modeling), our research group is being renamed to the HydroCS (Hydrologic Computational Science) Lab. The new name better reflects the evolution of our research program beyond water resources informatics and modeling. HydroCS emphasizes computational methods, scientific software, cyberinfrastructure, high-performance computing, and emerging…

Congratulations! Abdullah Azzam published his first lab paper in SoftwareX: https://doi.org/10.1016/j.softx.2026.102725. GCN10 is an open-source MPI-parallelized C program for generating global 10m curve number rasters.

If you are interested in a PhD position in CLAWRIM, please make sure to read the Prospective Students page first and apply using this form only if you are a good fit.