Birža ezers

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lake

11

islands

2

lake bottom

4

lakeshore

3

surroundings

3

catchment area

2

recreation

1

chemistry

2

fish

22

key dangers

5

name	Birza Source: R.Avotina, Names of Waterbodies Latvian SSR Date: 01-01-1984
administrative territory (parish or town)	Andrupenes Source: Date: 01-01-1993
administrative territory (parish or town)	Aulejas Source: Date: 01-01-1993
district (till 01.07.2009)	Kraslavas Source: Date: 01-01-1993
country	Latvia Source: Date: 01-01-1993
status "de jure"	fishery-right belongs to state Source: the Latvian Parliament Location: lake Date: 10-06-1998
area of water surface	107.1 hectare Source: the Latvian Parliament Date: 10-06-1998
area of water surface	107.1 hectare Source: SMPI Date: 01-01-1973
mean depth	3.6 metre(s) Source: LEA Date: 01-01-1972
maximum depth	10.0 metre(s) Source: LEA Date: 01-01-1972
hydrological map Birža ezera dziļumu karte	hydrological map: SMPI Date: 01-01-1975

number of islands	4 number Source: Encyclop.Latv.Nature Date: 01-01-1994
total area of islands	1.600 hectare Source: Encyclop.Latv.Nature Date: 01-01-1994

bottom structure	pebbles Source: UL IB Location: in places Date: 01-01-1972
bottom structure	sand Source: LEA Date: 01-01-1972
bottom structure	clay Source: UL IB Date: 01-01-1952
bottom structure	mud Source: UL IB Date: 01-01-1952

accessibility of lakeshore	possible of access Source: LEA Location: around
slope angle of lakeshore	dip Source: Encyclop.Latv.Nature Date: 01-01-1994
slope angle of lakeshore	low Source: SMPI Location: around Date: 01-01-1973

inhabitation	inhabited locality Source: Encyclop.Latv.Nature Location: south-east Date: 01-01-1994
inhabitation	inhabited locality Source: Encyclop.Latv.Nature Location: north Date: 01-01-1994
inhabitation	inhabited locality Source: SMPI Location: south Date: 01-01-1973

hydrological regime	flow-through Source: LEA
catchment region	Daugava Source: LEA Date: 09-01-1998

colour of water	oligohumic Source: Nature Census Project Date: 06-10-2018
colour of water	yellowish Source: Nature Census Project Date: 06-10-2018

fish of natural occurrence	rudd Source: Catch statistics Location: lake Date: 01-01-2001
fish of natural occurrence	bream Source: SMPI Location: lake Date: 01-01-1973
fish of natural occurrence	chub Source: SMPI Location: lake Date: 01-01-1973
fish of natural occurrence	crucian carp Source: SMPI Location: lake Date: 01-01-1973
fish of natural occurrence	perch Source: SMPI Location: lake Date: 01-01-1973
fish of natural occurrence	pike Source: SMPI Location: lake Date: 01-01-1973
fish of natural occurrence	roach Source: SMPI Location: lake Date: 01-01-1973
fish of natural occurrence	tench Source: SMPI Location: lake Date: 01-01-1973
fish occurrence asaris	10.0 percentage Source: UL IB Location: lake Date: 01-01-1952
fish occurrence karūsa	2.0 percentage Source: UL IB Location: lake Date: 01-01-1952
fish occurrence līdaka	10.0 percentage Source: UL IB Location: lake Date: 01-01-1952
fish occurrence līnis	2.0 percentage Source: UL IB Location: lake Date: 01-01-1952
fish occurrence plaudis	10.0 percentage Source: UL IB Location: lake Date: 01-01-1952
fish occurrence plicis	5.0 percentage Source: UL IB Location: lake Date: 01-01-1952
fish occurrence rauda	30.0 percentage Source: UL IB Location: lake Date: 01-01-1952
fish occurrence rudulis	10.0 percentage Source: UL IB Location: lake Date: 01-01-1952
fish occurrence vēdzele	3.0 percentage Source: UL IB Location: lake Date: 01-01-1952
fish occurrence vīķe	3.0 percentage Source: UL IB Location: lake Date: 01-01-1952
fish occurrence ālants	5.0 percentage Source: UL IB Location: lake Date: 01-01-1952
fish occurrence ķīsis	10.0 percentage Source: UL IB Location: lake Date: 01-01-1952
crayfish	little Source: SMPI Location: lake Date: 01-01-1973
crayfish	wealth Source: UL IB Location: lake Date: 01-01-1952

water bloom	not established Source: Nature Census Project Location: lake Date: 06-10-2018
water bloom	occurs Source: UL IB Location: lake Date: 01-01-1952
fish kills	not established Source: UL IB Location: lake Date: 01-01-1952
impact	water level decrease Source: Nature Census Project Location: lake Date: 06-10-2018
waste water inlet	no inlet Source: UL IB Location: lake Date: 01-01-1952

Birža ezers

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