Capturing movement

This is a skill I have yet to master. How can I capture the look of the watercourses I see on my hikes? I experimented with my camera at a brook near my house, and abandoned several shots before I was happy with this one.

Baboosic Brook: 1/10 sec., f/11.2. Fairly close to what I hoped to capture.

Baboosic Brook: 1/10 sec., f/11.2. Fairly close to what I hoped to capture.

I did manage to learn that a fast shutter speed without an adjustment to aperture resulted in a nearly-black photo. Thumbnail only; this one doesn’t deserve a featured spot.