"So imagine that a watershed is like a giant bathtub, where the drain is the river, lake, or stream"
It like a funnel that drains into a river or a lake or something that accepts and holds the run off.
METAMIA is a free database of analogy and metaphor. Anyone can contribute or search. The subject matter can be anything. Science is popular, but poetry is encouraged. The goal is to integrate our fluid muses with the stark literalism of a relational database. Metamia is like a girdle for your muses, a cognitive girdle.