Mouth Bar

Mouth Bar

 

a ledge that is located at the floor of a tributary valley of a mountain river and rises above the floor of a main valley that has been scoured by a glacier. Mouth bars form because glacial erosion in the main valley was more rapid than in the tributary valley. They reach a relative elevation of 200–300 m. Streams that flow over a mouth bar form rapids or waterfalls. Mouth bars are frequently subjected to the postglacial erosion of streams, and they appear as terraces on the slopes of the mouths of tributary valleys.

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Ted Cruz (R-Texas) last week penned a letter to FEMA Administrator Brock Long urging him to amend the scope of the existing FEMA dredging project on the San Jacinto River near Kingwood to include the mouth bar located on the West Fork of the river.
Simply trim up your outboard, pass over the creek mouth bar, and you'll find a new world of backcountry fishing.
The lower part of the Tredian Formation was deposited in the channel bar, mouth bar and delta lobe setting.
The sands are mostly barrier bars and distributary mouth bars. Reservoir D (Figure 16) is barrier bar to tidal sands.