It doesn't everywhere, and not reliably. You might not be aware that the US west coast is looking at a possible megadrought.
Your approach is fine for a rural compound, but doesn't scale for urban environments.
Your approach is fine for a rural compound, but doesn't scale for urban environments.
Perhaps these pieces of wisdom could offer some guide:
"When it rains it pours"
"Get it while the gettin' is good."
"Waste not, want not."
To me, rainwater capture can apply anywhere with a roof, a sky, and a mind to build cisterns.
As that fitting expression goes, "when it rains it pours".
As another fitting expression goes, "get it while the gettin' is good."
And yet another piece of wisdom, "waste not, want not."