I've had my Revolt in a few streams. A slow, to medium speed is best and don't stop. To much speed and you'll get a bath! Keep the clutches dry, you should be OK. They can take some splashing, but they'll slip if they're under water.
The Riot has 35 cm of ground clearance and there is another 10 to 15 cm to the clutch, so 45cm to 50cm of water.
You could always change to a taller tire too. 27" (68cm)

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