Graduate Student (PhD)

Contact Information:
Scott Campus (Omaha)

Ph.D. - CIVE

Water Resources

About Me:

Academic Degrees

· Bachelor of Technology, Civil Engineering, IIT Gandhinagar, India

Employment History

· University of Nebraska-Lincoln, Graduate Research Assistant (GRA), 01/2021-present.

Area of Research and Professional Interest

· Machine learning applications in Hydrology

· Rain-on-snow flooding

· Flood forecasting

· Drought assessment


· Rasiya Koya, S., Roy, T. (2023). Temporal Fusion Transformers for Streamflow Prediction: Value of Combining Attention with Recurrence. arXiv preprint arXiv:2305.12335.

· Rasiya Koya, S., Kar, K. K., Srivastava, S., S., Tadesse, T., Svoboda, M., Roy, T. (2023) . An Autoencoder-based Snow Drought Index. arXiv preprint arXiv:2305.13646.

· Rasiya Koya, S., Velasquez, N., Mantilla, R. I., Rojas, M., Harvey, K., Ceynar, D., Krajewski, W. F., Roy, T.(2023). Applicability of a Flood Forecasting System for Nebraska Watersheds. Environmental Modelling & Software, 164, 105693.

· Velasquez, N., Quintero, F., Rasiya Koya, S., Roy, T. Mantilla, R. I.(2023). Snow-detonated floods: Assessment of the US midwest March 2019 event. Journal of Hydrology: Regional StudiesJournal of Hydrology: Regional Studies, 47, 101387.

· Mai, J., Shen, H., Tolson, B. A., Gaborit, É., Arsenault, R., Craig, J. R., Fortin, V., Fry, L. M., Gauch, M., Klotz, D., Kratzert, F., O’Brien, N., Princz, D. G., Rasiya Koya, S., Roy, T., Seglenieks, F., Shrestha, N. K., Temgoua, A. G. T., Vionnet, V., andWaddell, J.W., (2022) The Great Lakes Runoff Intercomparison Project Phase 4: the Great Lakes (GRIP-GL), Hydrol. Earth Syst. Sci., 26, 3537–3572,

· Aliev, A., Rasiya Koya, S., Kim, I., Eun, J., Traylor, E., Roy, T. (2023). Application of Neural Networks for Hydrologic Process Understanding at a Midwestern Watershed. Hydrology, 10(2), 27.


· Rasiya Koya, S., K. K. Kar, and T. Roy (2023), Causal Drivers of Rain-on-Snow Events in North America, NebraskaWater Conference, Oct 3-4, Omaha.

· Roy, T., S. Rasiya Koya, S. Pokharel, N. Kumar, S. Srivastava, K. K. Kar, and I. Kim (2023), Convergent research towards building flood resilience in Nebraska, NebraskaWater Conference, Oct 3-4, Omaha.

· Rasiya Koya, S., Kanti Kar, K., Srivastava, S., and Roy, T.: SnoDRI: A Machine Learning Based Index to Measure Snow Droughts, (2023) In EGU General Assembly , Vienna, Austria, 24–28 Apr 2023, EGU23-8968,

· Rasiya Koya, S., K. K. Kar, and T. Roy (2022). Potential Drivers and Spatiotemporal Variability of Rain-on-Snow Events. In AGU Fall Meeting 2022.

· Rasiya Koya, S., Velasquez, N., Mantilla, R., Rojas, M., Harvey, K., Ceynar, D., Krajewski, W. and Roy, T., (2021), December. Development of a Flood Monitoring System Prototype for a Pilot Basin in Nebraska. In AGU Fall Meeting Abstracts (Vol. 2021, pp. C35G-0966).

Honors and Awards

· Second prize in the poster competition at the NebraskaWater Conference, 2023

· Sorkin Scholarship Fund Fellowship for the 2022-2023 Academic Year from the University of Nebraska-Lincoln

· Robert A. and Becky Reisdorff Student Support Fund for the 2021-2022 Academic Year from University of Nebraska Lincoln