This one pretty clearly keys to Kogotus, but it also looks fairly different from specimens I caught in the same creek about a month later in the year. With only one species of the genus known in Washington, I'm not sure about the answer to this ID.
Dorsoventral: The dorsoventral axis is the axis running from the top to the bottom of the body; for example, a has a flounder is dorsoventrally flattened body shape.
This other word references the same concept: dorsoventrally.