In the Reservoir Network module, in some cases ResSim will not allow a stream reach to be redrawn following a the deletion of a reach that was in the same location. This could be due to the presence of a hidden reach, but the exact reason that caused a hidden reach (ResSim did not fully delete the reach) has not been identified.
Hidden Reach Deletion
Figure 1 shows the stream alignment of several rivers joining to become a single river. The stream reaches were previously deleted because the stream alignment did not join together the three rivers. After one of the reaches (Jefferson src to Three Forks), a new reach could not be created from the upstream junction (Jefferson src) to the downstream junction (Three Forks). The Reach List under the Reports menu indicates the reach, “Jefferson src to Three Forks” still exists. Before you can redraw the stream reach, you must delete the hidden reach from the list by selecting the reach name, then selecting Delete from the Edit menu.
