Is the water standing or running?
The water is running.
    src        edge_attr  dst
0     0  to the right of    6
1     0  to the right of   10
2     0  to the right of    9
3     1  to the right of    2
4     1  to the right of    6
5     1  to the right of    7
6     1  to the right of    3
7     2   to the left of    1
8     2   to the left of    4
9     2  to the right of    3
10    3   to the left of    7
11    3   to the left of    2
12    3   to the left of    4
13    3   to the left of    1
14    4  to the right of    2
15    4  to the right of    6
16    4  to the right of    7
17    4  to the right of    3
18    5  to the right of    9
19    6   to the left of    4
20    6   to the left of    1
21    6   to the left of    0
22    7  to the right of    3
23    7   to the left of    4
24    7   to the left of    1
25    8             near   10
26    9   to the left of    0
27    9   to the left of    5
28   10             near    8
29   10   to the left of    0