Dear Hec experts

My unsteady simulation requires an upstream inflow and downstream stage boundary conditions. Unfortunately, both data have more than 10,000 rows which exceed the limit of Hec-Ras. I therefore cannot simply copy and paste my excel table over. I know the user manual suggests HEC-DSS link as the alternative, but I know nothing about HEC-DSS. Please all forgive my ignorance.

So I went to the HEC website to download. There were 5 exe files to download but I had difficulties with the 4th and 5th file (dss1of 2 and dss2of2). Maybe they are very big files.

I already printed the user's manual from the pdf file. There seems to be many utility tools. Can someone kindly point me the procedures I need to convert my excel data table (for the boundary conditions) into HEC-DSS format, so I do not have to lose too much sleep.

Thank you for your kindness.
Yao
Yao.HungLan@GVRD.BC.CA