Gov. Brown, what have you done? Or do you know what you have done when you signed that bill to stop dredging on the river? Let me enlighten you. There are facts the Water Resource Department should have told you. The river is a living thing, and any river with a dam is a dying river. Fact: The river tools are the gravel, rock, boulders and even the little grains of sand; they cause erosion. Without that movement, it takes 14.3 miles an hour to just move, not carry a 30 inch in diameter cobble stone that is on the …