Calm river view by horseback turns into ocean waves.

While on my trail ride today I stopped by to river for a break. Tri walked out into the edge of the water. I just commented how come the river was so calm and that it was like it taste fall. About that time wind starting to blow and the waves started coming in like they were coming in on the ocean. I have tried to ride Tri into the river when they were lapping like that and she did not want to go. This time she looked at me like I guess it’s OK since I’m already in here.