› Forums › Problem 13 Hydrology Problem 13 Posted by eet-admin on September 10, 2020 at 8:54 am A 2-hr UH is given below. Derive an 8-hr UH by the lagging method. I’m just wondering why we lagged 3 times and not 4 eet-admin replied 5 years, 2 months ago 2 Members · 1 Reply 1 Reply Sorry, there were no replies found. Log In to Reply Log in to reply. Public All Members Only Me PublicAll MembersOnly Me Public All Members Only Me Log In to Reply Start of Discussion 0 of 0 replies June 2018 Now