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a river in the Estonian SSR. The Emajógi is 218 km long and drains an area of 9,960 sq km. The river rises in the lake Pühajärv. For the first 82 km of its course, before it passes through the lake Vortsjärv, it is known as the Väike-Emajógi; below the lake, for the last 101 km of its course, the river is called the Suur-Emajógi. It empties into Lake Chudskoe-Pskov. The Emajógi is fed by various sources, but predominantly by rain. High water occurs between April and mid-June. The mean flow rate is 71.6 cu m per sec. The Emajógi freezes over in December, and the ice breaks up in the second half of March. The river is navigable below Tartu.

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Altogether 18 rivers and streams flow into the lake while the Emajogi River is the only outflow (Fig.
The two southernmost stations under the influence of the Vaike Emajogi River deviated clearly from the rather homogeneous group of the other eight stations, which we termed 'Vortsjarv Proper'.
The concentration of oil hydrocarbons is determined according to the monitoring programme in rivers falling to the sea and in the Emajogi River 6 times a year and in other rivers 1 or 2 times a year.
The proglacial lake in the Vortsjarv basin was connected with Glacial Lake Peipsi through the Emajogi River valley while the water level was so high that it flooded also the Saadjarve Drumlin Field area (Fig.
In Estonia, the best examples are the Parnu River, Narva River and Emajogi River.
The outflow is through the Emajogi River into Lake Peipsi in the east.
The water level in Lake Peipsi as measured by the Estonian Meteorological Institute at Praaga, located at the estuary of the Emajogi River, was used to describe water conditions at the moments of image acquisition.
Geomorphological and biostratigraphical evidence from the mouth of the Emajogi River (Sarv & Ilves 1975) demonstrate up to 6 m lower water level than in the southern part of the investigated area at the beginning of the Preboreal.
Through the outflowing Emajogi River its catchment area forms a sub-catchment of Lake Peipsi, the fourth largest lake in Europe.
Waterbody Date Sub- (on strate the map) 1 Elva River (Palu) 25/9/2007 pl, br, pb, st 2 Vaike Emajogi River (Restu) 25/9/2007 d, pb, pt 3 Nuudalate Spring 25/9/2007 pb, m, pt 4 Lake Puhajarv 25/9/2007 pl, br, pb, sd, st 5 Lake Peipsi (Lammijarv, at Salosaar Island) 25/9/2007 d, st 6 Lake Vortsjdrv (Limnological Station) 25.
Most (80%) of the nitrogen and phosphorus present in the lake's water is introduced by the Velikaya and Emajogi rivers.