shoalness

shoalness

(ˈʃəʊlnəs)
n
(of water) the state of being shallow; shallowness
References in classic literature ?
By the middle of the next day the yawl was aground, and from the shoalness of the water could not proceed any higher.
The shoalness of the coast keeps the heavy line of pressure at a considerable distance from the beach.
Where the [coast] takes a southerly or easterly trend, the shoalness of the water keeps the line of grounded ice far to seaward, leaving a fine smooth space inside.