shower

barrage, bombardment, broadside, cannonade, fusillade, salvo, volley

flood, gush, rush, spate, torrent

eruption, outbreak, outburst

broadside, earful

avalanche, burst, cataclysm, cataract, deluge, discharge, engulfment, flood, flood tide, flush, gush, inundation, outburst, outflow, outpouring, overflow, rash, spate, surge, torrent

current, river, stream, tide

excess, glut, overabundance, overage, overkill, overmuch, oversupply, superabundance, superfluity, surfeit, surplus