Total streamflow across the Waccamaw River was last observed at 55 cfs, and is expected to yield approximately 109 acre-ft of water today; about 3% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 1,717 cfs, with recent peaks last observed on 2018-09-22 when daily discharge volume was observed at 126,300 cfs.

Maximum discharge along the river is currently at the Waccamaw River At Conway Marina At Conway reporting a streamflow rate of 2,260 cfs. This is also the highest stage along the Waccamaw River, with a gauge stage of 7.28 ft at this location. This river is monitored from 3 different streamgauging stations along the Waccamaw River, the highest being situated at an altitude of 42 ft, the Waccamaw River At Conway Marina At Conway.

The Waccamaw River is a blackwater river that runs for 140 miles from North Carolina to South Carolina, eventually empties into the Atlantic Ocean. The river's name comes from the Waccamaw Native American tribe, who once lived in the area. The river's hydrology is affected by tidal influence, with a saltwater wedge that extends upriver during high tide. The river is home to several reservoirs, including the Waccamaw, Conway, and Pee Dee reservoirs, which help to control flooding and provide water for municipal and agricultural use. The river is also a popular destination for recreational activities, such as boating, fishing, and kayaking. Agriculture, especially the production of rice, has played a significant role in the Waccamaw River's history and development.