I walked the banks of the Middle Concho yesterday, hoping to hear the river roar. Over the weekend heavy rains near Barnhart washed away a pickup truck. Fortunately, the driver escaped safely from the raging river, suddenly a 150 to 200 feet wide torrent.
From the data above, none of that runoff made the North Pool at Twin Buttes, which is fed by the Middle Concho. Or, if it did, the City has been letting it (and more) flow through the gate at Twin Buttes.