Water is one of those subjects that looks impossibly difficult to paint but is actually governed by a handful of consistent rules. Once you understand how reflections behave — their color, their edges, their distortion — you can paint convincing water in any setting from a still lake to a rain-soaked street.

Rule 1: Reflections Are Always Darker Than the Object

A reflection of a bright sky in water is always slightly darker than the sky itself. This is because water absorbs some light rather than reflecting it all. Whenever you paint a reflection, make it a value or two darker than what it reflects. This one rule alone dramatically improves water paintings.

Rule 2: Reflections Are Directly Below the Object

A reflection appears directly below the object reflecting — not at an angle. If a tree stands to the left of your viewpoint, its reflection runs directly below it in the water. Many beginners angle reflections incorrectly, which immediately looks wrong.

Rule 3: Reflections Are Slightly Distorted

Even calm water has subtle ripples that stretch and break reflections vertically. Paint reflections as slightly elongated and wobbly — use a side-to-side brushstroke motion rather than perfectly straight up-and-down strokes. Moving water breaks reflections into more dramatic horizontal fragments.

Rule 4: The Horizon Sits Between the Scene and Its Reflection

The waterline acts as a mirror line. The sky’s reflection in the water has the same colors as the sky above, mirrored across the waterline — lighter near the horizon, darker higher up in the sky. This means in the water reflection, the lighter tones appear closest to the waterline and darker tones appear lower in the painting (away from the waterline).

Painting the Surface

Water is not just reflection — it also has a surface color influenced by the sky color bouncing off it at shallow angles. Add horizontal strokes of the sky color across the surface, slightly cooler and lighter than the reflection color beneath. These represent light bouncing off the flat surface of the water toward you.

Step-by-Step Approach

  1. Paint the scene above the waterline first and let it dry
  2. Mirror the colors directly below, making each slightly darker
  3. Add slight vertical wobble to the reflection strokes
  4. Lay horizontal surface strokes across the top of the reflection area
  5. Add a few horizontal highlight strokes of near-white for sparkle