Hey again, thanks for taking the time to help me out. I'm attaching the CN calculations and data broken down by area. As you can see, the values aren't uniform across the basin. I did detailed calculations and area percentages, but since, as I mentioned, it's primarily an urbanized area, I'm...
So, I should rely on the software data? That actually works better for me, but I just wanted to double-check to make sure I'm not overestimating my calculations. Is the time of concentration accurate? I checked it using two different formulas and got around 48 minutes with both, the average...
So the equations I used are S= 1000/CN-10 , Q= (P-0.2)^2/(P+0.8S) as an runoff depth, time to peak Tp=0.6*Tc, Qpeak= 484*A*Q/Tp
I have a concern because I have insight in a bridge project about a mile away from mine, which has similar curve numbers (CN) and the same rainfall depth. However, its...
Hey, thanks for talking the time to answer and running the model.
Yes, when I run it in HydroCad I get similar results like yours but as I said I need to use SCS type III 24 hour storm and the rainfall depth is actually 8.9 inches. The CN number checks out, it is high because it is mostly...
Hello everyone,
This might seem like a basic question, but I'm having trouble figuring out what's wrong with my setup.
I need to create a simple runoff model, so I set up one subbasin and input rainfall data into HydroCAD. The basin area is approximately 0.35 square miles, with a Curve Number...
