Collocations for shallow - adj.

be, look
become, get
The water gets shallow closer to the shore.

remain

extremely, fairly, very, etc.
Don't worry, the water's very shallow.

comparatively, relatively
enough, sufficiently
Follow the south shore, crossing the river where it is shallow enough.

be, seem
Tony seemed very shallow and immature.

extremely, fairly, very, etc.
exceedingly

Shallow is used with these nouns:
angle, approach, bay, bowl, breath, breathing, casserole, cave, container, crater, depression, depth, dish, ditch, dive, drawer, end, grave, groove, hollow, lake, pan, pit, pond, pool, recess, recession, river, root, sea, soil, stream, trench, trough, valley, water, well