No it's not, it's like you finding a plank of wood and saying "that's exactly 6 feet long",
...and the rest of us saying, "well, hang on, let's use a tape measure and find out exactly how long it is",
...and you saying "no, it's definitely 6 feet long, you can tell by looking at it, you don't need a tape measure, tape measures are tools for brainwashed people that have been schooled into believing tape measures measure real things, distances are fiction, not all tape measures are equal, you can't believe what tape measures tell you because its just an argument from authority, I don't need your tape measure to tell me it's 6 feet long, and that nails it, the plank is 6 feet long therefore the globe model is nonsense."
Until you realise that's what you're doing with this ridiculous "water level is flat and I don't need to measure it to know that" nonsense, your experiment will be flawed, your conclusion will be wrong, and you'll continue to look like an idiot to everyone else here.