Issa (Velikaya)

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Issa
Исса
The Issa in Opochka district

The Issa in Opochka district

Data
Water code RU :  01030000112102000027925
location Pskov Oblast ( Russia )
River system Narva
Drain over Velikaya  → Narva  → Baltic Sea
origin See Dedino
56 ° 15 '2 "  N , 28 ° 14' 49"  O
Source height 119  m
muzzle Velikaya coordinates: 56 ° 58 '10 "  N , 28 ° 47' 33"  E 56 ° 58 '10 "  N , 28 ° 47' 33"  E
Mouth height 65  m
Height difference 54 m
Bottom slope 0.31 ‰
length 174 km
Catchment area 1580 km²
Course of the Issa (Исса) in the catchment area of ​​the Narva

Course of the Issa (Исса) in the catchment area of ​​the Narva

The Issa ( Russian Исса ) is a left tributary of the Velikaja in the Russian Oblast of Pskov .

The Issa has its origin in the small lake Dedino in the extreme southwest of the Pskov Oblast. From there it flows in a predominantly north-northeast direction until it finally meets the Velikaya flowing north, 178 km above its confluence with Lake Peipus .

The Issa has a length of 174 km. It drains an area of ​​1580 km². There are 200 smaller lakes in the catchment area of ​​the Issa. The snowmelt accounts for a significant proportion of the annual runoff of the Issa.

Individual evidence

  1. ↑ a b c d Article Issa in the Great Soviet Encyclopedia (BSE) , 3rd edition 1969–1978 (Russian)http: //vorlage_gse.test/1%3D056827~2a%3DIssa~2b%3DIssa
  2. ↑ a b Issa in the State Water Register of the Russian Federation (Russian)