This dataset comprises in-situ derived snow depth (SD) measurements collected in the Sierra Nevada mountain range, Spain, primarily during the 2024–2025 snow season. The in situ measurements were derived from snow poles installed at specific locations along the mountain range. Quality control procedures included the exclusion of all NoData values and SD measurements falling outside the physical range [0, 6] m. The dataset presented here corresponds specifically to a citizen science initiative, in which snow depth data were extracted from images of the snow poles submitted by participants.