Online WES spillway design Formula: X n = K Hd n-1Y Design discharge Q, in m [or ft] Crest length L, in m [or ft] The upstream water surface elevation, in m [or ft] The channel floor elevation, in m [or ft] K and n are parameters which depend on WES spillway shape INPUT DATA:       [Description]       [Sample Input/Output]     Project (optional):           Select Units:      SI (metric) U.S. Customary Discharge Q :           [ Q > 0 ] Crest Length L :         [ L > 0 ] Upstream Water Surface Elevation Ews :         Channel Floor Elevation Ecf :          WES spillway shapes :     A. 0 H : 3 V (Shape 1) B. 1 H : 3 V (Shape 2) C. 2 H : 3 V (Shape 3) D. 3 H : 3 V (Shape 4) [ Click on top of the figure to display ]   OUTPUT: Point X Y 0 0 0   Your request was processed at  03:40:50 pm on January 13th, 2026   [ 260113  15:40:50 ]. Thank you for running   online_WES_spillway   Please call again.   [191030 10:55]