Why is hydrograph recession limb stairstepping?
Why is hydrograph recession limb stairstepping?
(OP)
Does anyone have any ideas on why the recession limb of this hydrograph would be stairstepping like this?
I have run several different storms on this watershed (6 hour 100 year, 24 hour 100 year, 6 hour Probable Max. Precip. adjusted for our location, and 72 Probable Max Precip. adjusted for our location.) The 72 hour PMP is the only one that does this. Each of the 4 storms used different distributions, so I wondered if the distribution was the culprit. Could there be anything else causing this?
I have run several different storms on this watershed (6 hour 100 year, 24 hour 100 year, 6 hour Probable Max. Precip. adjusted for our location, and 72 Probable Max Precip. adjusted for our location.) The 72 hour PMP is the only one that does this. Each of the 4 storms used different distributions, so I wondered if the distribution was the culprit. Could there be anything else causing this?





RE: Why is hydrograph recession limb stairstepping?
RE: Why is hydrograph recession limb stairstepping?
RE: Why is hydrograph recession limb stairstepping?
Peter Smart
HydroCAD Software
www.hydrocad.net
RE: Why is hydrograph recession limb stairstepping?
If I'm understanding you right, I think I tried that. I was using a rainfall distribution that only had a data point every 6 hours. I went back and interpolated between these points to create data points every 15 minutes. Is this what you're suggesting? I am wondering if the program I was using didn't 'save' it and is still using the old rainfall distribution.
RE: Why is hydrograph recession limb stairstepping?
Peter Smart
HydroCAD Software
www.hydrocad.net
RE: Why is hydrograph recession limb stairstepping?
Thanks for the explanation. I will have to go back into the project and see what exactly I have. You are talking about the mass curve, and I am talking about a distribution. I will go back into the project later and check.
RE: Why is hydrograph recession limb stairstepping?
Peter Smart
HydroCAD Software
www.hydrocad.net
RE: Why is hydrograph recession limb stairstepping?
RE: Why is hydrograph recession limb stairstepping?