Data of twelve seasonal cruises, during 1934–1938, over the Scotian shelf have been used to determine surface currents, volume transports, and current patterns. Surface currents ranged from zero to 37.9 cm./sec. (18.2 nautical mi. da.). Volume transports varied considerably from season to season, and were greatest during winter months. Isentropic analysis of the data indicated a persistent current pattern, defining a water movement parallel to the coast, a large-scale circulatory movement over the central portion of the shelf, and a complicated vortex in the southwesterly portion of the area.