Smith Mountain Lake and its tributaries, including the Roanoke River upstream to Niagara Dam. June 1–September No length limit. From November 1 to May 31 there is a slot limit ( inches) for. A new protective slot limit (30””) was initiated in to reduce the number of stunted striped bass between inches, improve growth, and provide. Smith Mountain Lake and its tributaries, including the Roanoke. 1 - May. A new protective slot limit was adjusted in to inches (only for the months of Nov-May), up from inches initiated in From. . 2 per day in the aggregate. Two per day for each person on the boat with a fishing license or children under 16 when fishing with a person with a license. River upstream to Niagara Dam. Reminder that for Smith Mountain Lake, VA the slot limit starts tomorrow (11/1) - no striped bass 30”- 40” may be harvested. 30 – 40 inch protective slot limit (all striped bass caught between 30 and 40 inches must be immediately released unharmed, fish under 30 inches and over June 1–September No length limit. "On Smith Mountain Lake and its tributaries, no striped bass inches from Nov. 2 per day in the aggregate. Reminder the Striper slot rules change on Jan 1. Smith. During the period from June 1 to October 3, you may catch 2 fish with no length limits.