That may be a good take on it, but I have one of my own. Way back in the dark ages of the '70's, I was in the concrete business. There, I learned that one gallon water equal 8.33 lbs. My hypothesis comes from China building that biggggg dam. It impounds so many gallons that it must have some effect on the earth. Think of placing weights on a wheel for balancing (or in this case, unbalancing!)
May be a combination of things like this massive engineering and what you propose!
Correct me please, where I'm getting your thought wrong.
Butterfly effect...seemingly small changes, over time and events, multiply. Would that concentration of water also serve to feed moisture to storms when they pass over? Sort of like the effect of the Great Lakes when they aren't frozen?
hhmmmm Interesting
Would you like to consider for a moment the total weight of the planet?
Some scientists say that the earth's crust in the upper Midwest and northeast is still rebounding from the weight of the last glaciation.