Bugg Spring is a second-magnitude spring with a deep, circular pool about 400 feet in diameter. Except on the western side, the side walls are almost vertical, reaching depths of 170 feet to 175 feet. There is no boil observed on the pool surface due to the depth of the spring opening. There is very little aquatic vegetation, but algae are present in the spring pool and run. The spring run flows north about 0.8 mile into the Helena Run outflow from Lake Denham. The low-lying areas around the spring are densely forested, with sandhills to the south.