Dataset of the Snowmelt Runoff Onset Date in the Sierra Nevada, California, USA

Leveraging machine learning algorithms and integrating multi-source remote sensing data, we for the first time achieve long-term estimation of snowmelt runoff onset dates in forested areas within complex mountainous terrain. Taking the Sierra Nevada region in California, USA, as the study area, we generated a dataset of snowmelt runoff onset dates for the years 2017–2025.

The dataset includes station names, geographic coordinates (latitude and longitude), and corresponding estimated snowmelt runoff onset dates within the study area.