Dervanišku ezers

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lake

20

islands

5

lake bottom

4

lakeshore

8

surroundings

1

catchment area

3

recreation

3

chemistry

2

fish

23

key dangers

5

name	Dervanisku Source: R.Avotina, Names of Waterbodies Latvian SSR Date: 01-01-1984
name	Ustaukas Source: R.Avotina, Names of Waterbodies Latvian SSR Date: 01-01-1984
administrative territory (parish or town)	Demenes Source: Date: 01-01-1993
administrative territory (parish or town)	Laucesas Source: Date: 01-01-1993
district (till 01.07.2009)	Daugavpils 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	68.7 hectare Source: the Latvian Parliament Date: 10-06-1998
area of water surface	67.7 hectare Source: SMPI Date: 01-01-1972
mean depth	5.5 metre(s) Source: LEA Date: 01-01-1972
maximum depth	21.1 metre(s) Source: SMPI Date: 01-01-1972
origin	subglacial Source: Encyclop.Latv.Nature Location: lake Date: 01-01-1994
photograph D gals. Skats no paugura šosejas malā.	photograph: Vita Licite Location: south Date: 21-07-2007
photograph Skats uz A piekrasti	photograph: Eriks Z. Location: west Date: 23-09-2005
photograph Skats uz DA piekrasti	photograph: Eriks Z. Location: west Date: 23-09-2005
photograph Seklais aizaugušais ezera D gals.	photograph: Vita Licite Location: south Date: 28-04-2001
photograph Eitroficēta ezera piekraste.	photograph: Vita Licite Location: north-west Date: 19-08-1998
photograph Ezera Z krasts	photograph: Eriks Z. Location: north Date: 30-11--0001
photograph Ezera ZR daļa	photograph: Eriks Z. Location: north-west Date: 30-11--0001
photograph Skats uz Z piekrasti	photograph: Eriks Z. Location: east Date: 30-11--0001

number of islands	3 number Source: R.Avotina, Names of Waterbodies Latvian SSR Date: 01-01-1996
number of islands	1 number Source: Encyclop.Latv.Nature Date: 01-01-1994
total area of islands	1.000 hectare Source: LEA
photograph Viena no salām (D galā).	photograph: Vita Licite Location: south Date: 21-07-2007
photograph Sala (skats no R krasta).	photograph: Vita Licite Location: west Date: 28-04-2001

bottom structure	clayey sand Source: LEA Date: 01-01-1972
bottom structure	pebbles Source: LEA Date: 01-01-1972
bottom structure	stones Source: LEA Date: 01-01-1972
bottom structure	mud Source: UL IB Date: 01-01-1951

slope angle of lakeshore	dip Source: SMPI Location: east Date: 01-01-1972
slope angle of lakeshore	dip Source: SMPI Location: south Date: 01-01-1972
slope angle of lakeshore	dip Source: SMPI Location: west Date: 01-01-1972
slope angle of lakeshore	dip Source: LEA Location: north
slope angle of lakeshore	low Source: LEA Location: south
slope angle of lakeshore	steep Source: LEA Location: east
slope angle of lakeshore	steep Source: LEA Location: west
photograph Ezera vidusdaļa, skats no R krasta.	photograph: Janis Spruds Location: west Date: 21-07-2007

hydrological regime	flow-through Source: LEA
catchment region	Daugava Source: LEA Date: 09-01-1998
count of discharged stream	6 number Source: LEA

recreation facility	halt of boats Source: Vita Licite Location: west Date: 19-08-1998
recreation facility	angler centre Source: SMPI Date: 01-01-1972
recreation facility	bathing-place Source: SMPI Location: north Date: 01-01-1972

colour of water	oligohumic Source: Nature Census Project Date: 13-08-2019
colour of water	yellowish Source: Nature Census Project Date: 13-08-2019

fish of natural occurrence	bream Source: Catch statistics Location: lake Date: 01-01-2001
fish of natural occurrence	crucian carp Source: Catch statistics Location: lake Date: 01-01-2001
fish of natural occurrence	tench Source: Catch statistics Location: lake Date: 01-01-2001
fish of natural occurrence	zander Source: Catch statistics Location: lake Date: 01-01-2001
fish of natural occurrence	perch Source: SMPI Location: lake Date: 01-01-1972
fish of natural occurrence	pike Source: SMPI Location: lake Date: 01-01-1972
fish of natural occurrence	roach Source: SMPI Location: lake Date: 01-01-1972
fish occurrence asaris	17.0 percentage Source: UL IB Location: lake Date: 01-01-1951
fish occurrence karūsa	8.0 percentage Source: UL IB Location: lake Date: 01-01-1951
fish occurrence līdaka	20.0 percentage Source: UL IB Location: lake Date: 01-01-1951
fish occurrence līnis	10.0 percentage Source: UL IB Location: lake Date: 01-01-1951
fish occurrence plicis	10.0 percentage Source: UL IB Location: lake Date: 01-01-1951
fish occurrence rauda	18.0 percentage Source: UL IB Location: lake Date: 01-01-1951
fish occurrence rudulis	1.7 percentage Source: UL IB Location: lake Date: 01-01-1951
fish occurrence vēdzele	2.0 percentage Source: UL IB Location: lake Date: 01-01-1951
fish occurrence vīķe	1.7 percentage Source: UL IB Location: lake Date: 01-01-1951
fish occurrence ālants	1.7 percentage Source: UL IB Location: lake Date: 01-01-1951
fish occurrence ķīsis	10.0 percentage Source: UL IB Location: lake Date: 01-01-1951
afforcing of fish stock	bream Source: SMPI Location: lake Date: 01-01-1962
afforcing of fish stock	bream Source: SMPI Location: lake Date: 01-01-1960
afforcing of fish stock	pike Source: SMPI Location: lake Date: 01-01-1958
afforcing of fish stock	pike Source: SMPI Location: lake Date: 01-01-1957
crayfish	wealth Source: Vita Licite Location: lake Date: 09-06-2005

water bloom	not established Source: Nature Census Project Location: lake Date: 13-08-2019
water bloom	occurs Source: UL IB Location: lake Date: 01-01-1951
fish kills	not established Source: UL IB Location: lake Date: 01-01-1951
impact	beaver deed Source: Nature Census Project Date: 13-08-2019
waste water inlet	no inlet Source: UL IB Location: lake Date: 01-01-1951

Dervanišku ezers

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