Two channel bifurcations and their water levels
One branch runs much higher; at another an eddy scours the bed.
Two red-chalk diagrams of a channel splitting into branches, drawn with arrows for the current and lettered points. In the first, the water at a b is said to run much higher than that at d e; in the second, the branches r m stay nearly equal while the back-eddy at o sinks very low and hollows out the bed, the point p rising from the impact and x falling lower. The second note breaks off before it finishes.
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First bifurcation: one branch much higher
Labelled b, a c, d and e, the diagram notes that where the channel divides the water a b will run much higher than the water d e.
Second bifurcation: an eddy scouring the bed
For the branches r, o, x, p, m, n the note says the water r m stays almost equal, while the back-eddy at o drops very low and hollows out the bed; p rises from the impact and x falls lower. The sentence is cut off.