we are in the longest drought since the 1940's we are finally getting a little rain, but we need more, this little shower only brought less than 1" but it sure feels good to get some. There is not much "run off" to add water to lake Hefner, the lake levels here in Okc are fed by the north Canadian river, that river is dammed up at Canton, Ok. developing Canton lake, that lake is about 10ft lower than normal, when the water is released from Canton it runs the approx 150 river bed miles to Okc, some water was released there in Canton, but the river bed has soaked up so much water that it has taken 16 days to just get a trickle of water into lake Hefner as of yesterday.