Thanks everyone for your input. The dam is old 1920's no piezometers, flow is figured from downstream gaging station.
cvg: I'm insterested in seeing your calcs. Is there a way I can look at them?
This was my first time to post. I apologize for not including a more detailed account of my question and all the variables/constants I've been using. And no this is not a homework problem. Some of you are a little brutal and I would ask that you request more information before making...
I'm working on a dam project and am trying to calculate the flow out of the dam thru a 400 foot section of pipe with the elevation of water in the dam 68 feet above the invert of the outlet structure. The effective diameter of the (non-circular) pipe is 4.437ft. The pipe is concrete, assuming a...