Water depth

What is it?

This is the depth of the water at a specific point.

Why does it matter?

In certain areas, water levels have huge effects on eco-system health. For example, fish spawning.

What does it mean?

Water depth naturally fluctuates throughout the season. Tracking water depth at times like ‘highest’ in the spring and ‘lowest’ in the late summer can give you indications of exceptional drought or flood years. Every area has different fluctations and ‘normal’ values. Over time, you will begin to understand what is unusual for your body of water.

Water Rangers protocol

You can use a water gauge attached to a solid structure, or you can use something like a secchi disk and note when the line goes slack. Please be aware that the location you take depth readings from must be conistent! Docks should be anchored and remain in the same spot year round. If you take your dock out every year, your readings will not be as accurate. Note this in your location description.

Using your secchi disc to measure water depth

We only record water depth in this kit for when you can see the bottom in your test location. Use your secchi disc to record this.

  1. Lower your secchi disk until it touches the bottom, making sure the rope is straight up and down and there’s no slack in the rope.
  2. Pinch the rope, or use a clip to mark where the rope touches
    the water.
  3. Calculate the water depth using the 1/2 meter intervals as you would the secchi depth.

Note: Your rope is measured to 10-20m. Not suitable for deep spots.