Tributary mouth

De Vault DS. 1985. Contaminants in fish from Great Lakes harbors and tributary mouths. Arch Environ Contam Toxicol 14 587-594. 

The term mouth is recommended to be used either in a wide sense as a reduced version and absolute synonym if the term mouth area (in this case, the use of the term river mouth is quite necessary) or in a narrow sense as applied to the point of inflow of any watercourse to another watercourse (tributary mouth) or to a receiving basin (delta branch mouth) as well as to the outlet to the open sea from a semi-enclosed coastal water body (liman mouth, lagoon mouth, estuary mouth). 

The studies revised in this chapter correspond to the last 125 km of the Ebro River, from the Riba-roja dam to the river mouth, plus about 100 km of one of the main Ebro tributaries the Cinca/Vero system (see map in Fig. 1 for location of the sites). This area is heavily dammed to regulate the river flow as well as to provide electric power and facilitate water captation for irrigation channels. Dams and overflow dams relevant for the studies revised here are shown in Fig. 1. 

Figure 13. Variations of S Ca and Sr/ Sr of dissolved Ca and Sr in rivers. There is variation of >1.0%o in S Ca although recently reported data (Schmitt et al. 2003) suggest that the low Ganges tributary values are not seen in samples from near the mouth of the Ganges.

The tops of underwater canyons are confined to river mouths and form a complicated branched pattern of tributaries, which cross the shelf edge and join the main channel of the canyon within the continental slope. 

Whilst the absolute amount of dissolved material carried to the sea will gradually increase from the source to the mouth, the actual concentration, as expressed in grains per gallon, may fall as the river increases in bulk through dilution by purer tributaries. During times of flood, too, the proportion of salts may differ very considerably from the normal, and the composition of the water near the mouth of a river may give a clear indication of the particular area in which the excessive rainfall or flooding has occurred. 

Located along the Jari River (a tributary 300 km from the mouth of the Amazon), the 1.6 million ha Jari estate was originally purchased by the American multimillionaire Daniel Ludwig in 1967. In the first fifteen years of the project, more than 100,000 ha of forest were cleared and planted with exotic... 

Potter Cove is a tributary inlet close to the entrance of Maxwell Bay, one of the two big fjords at King George Island (Figure 6.1). The cove is divided into a mouth and an inner part. The mouth area is bordered by steep slopes in the north and by a broad intertidal platform in the southeast. The bottom of the mouth area lies between 100 and 200 m. The inner part is not deeper than about 50 m and barred by a sill of a depth of about 30 m (30). 

Fig. 6.12 The Scott Glacier flows north from the polar plateau and discharges ice into the Ross Ice Shelf. The Bartlett and Albanus glaciers are its principal tributaries. The major mountain ranges adjacent to the Scott Glacier are the La Gorce Mountains at its head and the Tapley Range east of its mouth. In addition, the map identifies Mt. Weaver, Mt. Wyatt, Mt. Gardiner, and Mt. Blackburn. The valley of the Leverett Glacier is located east of the Scott Glacier and drains the Harold Byrd Mountains to be discussed in Section 6.5 (Adapted from Mirsky 1969)...

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