What is the color of the smooth water?
The water is dark blue.
    src        edge_attr  dst
0     0               on    3
1     0  to the right of    1
2     0  to the right of    5
3     1  to the right of   17
4     1  to the right of    8
..  ...              ...  ...
79   18  to the right of    7
80   18  to the right of   12
81   18  to the right of   13
82   18   to the left of   10
83   18   to the left of    1

[84 rows x 3 columns]