Dear Chris, @Chris Smemoe
in wms , I created new coverage type rain gauge and inputted depth values in mm for 12 rain gauge stations of one watershed : I wanna create hydrograph using HEC-1 model to find the peak discharge value of the watershed based on these depths values of the stations for a return period of 2 years and 5 min duration . I simulated the model and got the hydrograph . but the problem is the hydrograph shows no discharge (flat curve ) as shown in the enclosed picture here
why does that ? ?? please notice the precipitation depths in the first picture.( the curve number of the watershed is 90, and the initial abstraction (Ia) according to CN is 5.66 mm, I can find answer with you ? thanks in advance!