Correct

流势

/ liú shì / 
Strokes

Example

As a Noun

force and velocity of a current; momentum of the flow

1
Hóngshuǐ
洪水
liúshì
流势
wěndìng
稳定
  
。

The flood flows steadily.

2
Héshuǐ
河水
liúshì
流势
hěn
很
jí
急
  
。

The river flows rapidly.