Six small glacial-fed tarns, called the Blum Lakes, occupy successive bowls on the southeast side of the mountain. Several other ice sheets are spread across cirques and basins on Mount Blum and neighboring peaks. Blum Creek, a stream named for the mountain, drains north and west off Mount Blum and flows into the Baker River, which in turn flows into the Skagit River. The Baker Lake reservoir, one of a series of reservoirs that impound the lower Baker River, touches Mount Blum at its far northeastern segment. Lonesome Creek and Scramble Creek also drain valleys east and north of Mount Blum, respectively. Steep cliffs and drop-offs in the valleys produce some extremely tall waterfalls, such as Blum Basin Falls.