In United Kingdom usage, the term creek refers exclusively to a tidal water channel. In this usage, a creek would normally dry to a muddy channel with little or no flow at low tide, but often with significant depth of water at high tide.
Example Usage of (tidal)
Casablanca: Back home, facing a tidal wave of cuddles from the younglings
ForeverDumb: tonight at the Whats Up Lounge with Hollander, Shotgun Fiction and Tidal Wave Blues! 9PM 21+ Free admission with the purchase of a FD shirt!
foxzymega: Turnagain Arm Tidal Energy Corporation; Notice of Amended Preliminary Permit ... http://bit.ly/684ZAU