Points:
0
0
Time left:
0
0
:
0
0
It takes a little over 2 years on average to drain a "lake full" of water through Narva.
Lake Peipsi shore (photo: Ederi Ojasoo)
It takes a little over 2 years on average to drain a "lake full" of water through Narva.
Õige vastus: 1
Make your choice. On first try you get
2 and on second try 1 point.
1
/
1
It takes a little over 2 years on average to drain a "lake full" of water through Narva.
The water volume of Lake Peipsi (without Lake Lämmi and Lake Pihkva) is 21.8 km3, and the average discharge in the upstream in Vasknarva is 330 m3/s. Thus, it takes a little over two years for all the water in the lake to ‘flow out’ through Narva. lake Peipsi, including Lake Lämmi and Lake Pihkva, is the fourth largest lake in Europe by area, after Lake Ladoga, Lake Onega, and Lake Vänern.
Additional information:
Eesti Nõukogude Entsüklopeedia 6, 1974. ‘Peipsi’. (http://entsyklopeedia.ee/artikkel/peipsi3)
Järvet, J., 2002. ‘Sada aastat Narva jõe äravoolu mõõtmisi’ (A hundred years of runoff measurements in River Narva). Eesti Loodus 12/2002. (http://vana.loodusajakiri.ee/eesti_loodus/artikkel230_220.html)
Lake Peipsi shore (photo: Ederi Ojasoo)