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Please help. I can't find the place to setup two reservoirs connected to each other. They have different stages after the storm event and finally will reach the same water surface level due to the connections. I tried to use one as the other's downstream storage, but there is no back flow from...

My client specifically asked me to use the 256 shape factor and there is a corresponding dimensionless unit hydrograph in the county's tech manual. Can anybody tell me how I can use this dimensionless unit hydrograph in Hec-HMS? Thank you!!!

Hi, I'm trying to enter the hydrograph by assigning the dss path to hec-ras but it seems i can only enter one path which contains 24 hours data. How can I add hydrograph for more than one day then? Thanks!!!

Thanks for your help!!! So now I have the 24 hours SCS II storms but how can i use it in hec-hms? Under meteorologic models, should I still use weighted station method or i have to pick some different method? I'm asking this because I want to give a weight for each rainfall station and then...

This is what I don't understand. All the rainfall data for the 3 stations are daily data only. I do have the rainfall depth for 24-hour design from the county technical manual (isohyets). Could you explain what you said in detail? Thanks!!! Tony

Hi I'm a newbie in Hec-HMS, sorry for my entry-level question. I have a basin with 3 rainfall stations around it. I would like to use the gage weights method in meteorologic models to calculate rainfall depths for each sub-basin. But my client ask me to use SCS storm type II to distribute the...