A Junction Element is used to combine the outflow from multiple upstream elements in order to produce one outflow. The outflow from the junction is usually connected downstream to a reach or other elements. All water that enters a junction must leave the junction because no water is stored at the junction. Therefore, all of the inflows to the junction are added together in order to compute the total inflow hydrograph to the junction. Similarly, all sediment in each of the inflows is added to compute the total sedigraph. The total inflow hydrograph and total inflow sedigraph are connected to the downstream element.