1762. Whereas the act of assembly made in the first year of his present Majesty's reign [1761], entitled, an act to oblige the owners of mills, hedges, or stone-stops, on sundry rivers therein mentioned, to make openings or slopes therein for the passage of fish, has been found defective, and not to answer the purposes for which it was intended, and it is therefore necessary that the same should be amended: Be it therefore enacted by the Lieutenant Governor, Council and Burgesses, of this present General Assembly, and it is hereby enacted by the authority of the same, That the owner or proprietor of all and every mill, hedge, or stone-stop, on either of the rivers Nottoway and Meherrin, shall in the space of nine months from and after the passing of this act, make an opening or slope in their respective mill-dams, hedges, or stops, in that part of the same where there shall happen to be the deepest water, which shall be in width at least ten feet in the clear, in length at least three times the height of the dam, and that the bottoms and sides thereof shall be planked, and that the sides shall be at least fourteen inches deep, so as to admit a current of water through the same twelve inches deep, which shall be kept open from the tenth day of February to the last day of May in every year.... And be it further enacted by the authority aforesaid, That if any such owner or proprietor shall neglect or refuse so to do, within the time aforesaid, the person so offending shall forfeit and pay the sum of five pounds of tobacco for every day he or they shall so neglect or refuse.... Still the fundamental problem was not solved; fish were not by-passing the remaining obstructions in sufficient quantity to maintain the expected harvest. After various amendments and additions this explicit definition of a fishway or slope was enacted into law in 1771: That a gap be cut in the top of the dam contiguous to the deepest part of the water below the dam, in which shall be set a slope ten feet wide, and so deep that the water may run through it 18 inches before it will through the waste, or over the dam, that the direction of the said slope be so, as with a perpendicular to be dropped from the top of the dam, will form an angle of at least 75 degrees, and to continue in that direction to the bottom of the river, below the dam, to be planked up the sides 2 feet high; that there be pits or basins built in the bottom, at 8 feet distance, the width of the said slope, and to be 12 inches deep, and that the whole be tight and strong; which said slope shall be kept open from the 10th day of February to the last day of May, annually, and any owner not complying to forfeit 5 pounds of tobacco a day.