Stand in the water with a tripod. Do your best to stabilize as it's flowing past you. Open your shutter as wide as you can to get the desired effect. Click, click boom.
Home is awesome.
Wilson Creek runs through the backyard at my parent's house and I used to spend a lot of time playing in it as a kid. It's changed a lot over the years because of rains, flooding, and falling trees. It's really pretty in the spring, so I was happy to get a couple shots last year.