Often cisterns are and were built to catch and store rainwater.
I put out a pot to catch rainwater and filter it for steam ironing (my mother's tradition).
A gutter system catches rainwater and feeds it to potted plants.
An impluvium or pool designed to catch rainwater lies in the middle of the courtyard.
And a lot of them didn't even have plastic sheeting or anything to catch rainwater in.
Around the trailer are 20 buckets that catch rainwater for the animals.
It was built to catch and store rainwater which was then used for the daily needs of the fortress occupants.
Cisterns are often built to catch and store rainwater.
She dumped the remaining mud onto the ground and set down the pot to catch rainwater.
I had given orders to make sails ready for catching rainwater.