This article presents a list of apparent watercourses on the island of Saint Martin in the Antilles. The island does not actually have any permanent rivers. However, erosion of the hills by rain has sculpted over time several gullies knowned here as ravines . These ravines are normally dry, but during periods of heavy rainfall, they channel water into powerful torrents (due to the steep gradients) that flood the plains below. The French side of the island, with its larger mountainous area, has numerous ravines, 17 of which are named after valleys, while the Dutch side has mainly two named ravines and one canal [1] that collect and divert rainwater. In the past, many wells were dug in these ravines.