If the water is stuck behind a dam it's not moving and has little to 0 kinetic energy. It does have potential energy. If the dam broke, the water would come rushing out. It would then have a tremendous amount of kinetic energy as it moved down the river away from the broken dam. Another example is a stopped bike on a road at the top of a hill. This is the same idea as the dam.
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.