I’ve found our rainwater tank seems to focus rain. A sprinkling of rain fell overnight. Though my wheelbarrow was out it only collected enough water to fill up a mug.
I didn’t expect much to have been added to the tank this morning but I was surprised. The tank showed 12 to 15 new gallons! That’s from just half the roof, too. It always amazes me just how much water can be collected just from the rainfall.