Viru-Peipsi veemajanduskava - Keskkonnaministeerium
Viru-Peipsi veemajanduskava - Keskkonnaministeerium
Viru-Peipsi veemajanduskava - Keskkonnaministeerium
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98<br />
5. Kokkuvõte 5. Summary<br />
seisundi rikkumisest tingitud kalastiku rahuldav või<br />
kohati isegi halb seisund.<br />
<strong>Viru</strong>-<strong>Peipsi</strong> piirkonna rannikumeri jaguneb kaheks<br />
tüübiks – oligohaliinne Narva laht ja mesohaliinne<br />
Soome lahe lääneosa. Kokkuvõtteks võib olemasolevate<br />
andmete põhjal tõdeda, et <strong>Viru</strong> rannikumere<br />
ökoloogiline seisund on hea ja rahuldava<br />
piiril, kusjuures enamus hinnanguid annab tulemuseks<br />
hea kvaliteediklassi.<br />
Koostöös Prantsuse Geoloogiateenistuse ekspertidega<br />
on <strong>Viru</strong>-<strong>Peipsi</strong> piirkonna põhjavesi jagatud<br />
13 põhjaveekogumiks. Kõik põhjaveekogumid<br />
peale Ida-<strong>Viru</strong> põlevkivibasseini Ordoviitsiumi<br />
põhjaveekogumi on heas keemilises ja kvantitatiivses<br />
seisundis. Ida-<strong>Viru</strong> põlevkivibasseini Ordoviitsiumi<br />
põhjaveekogumi hea seisundi saavutamine<br />
ei ole lähema paarikümne aasta jooksul võimalik.<br />
Kõik põhjaveekogumid, välja arvatud Ordoviitsiumi-Kambriumi<br />
põhjaveekogum ja Siluri-Ordoviitsiumi<br />
põhjaveekogum Devoni kihtide all,<br />
kuuluvad nn „riskigruppi“. See tähendab, et heale<br />
seisundile vaatamata on olemas põhjaveekogumeid<br />
mõjutavad tegurid, mis võivad nende head<br />
seisundit tulevikus mõjutada.<br />
34 rivers of 50 have good chemical status. The<br />
elevated phosphorus content is the cause for bad<br />
or moderate status in 13 rivers of 16. 28 rivers<br />
have good ecological status. The ecological status<br />
was classified moderate or poor for 22 rivers for<br />
the following reasons: 10 rivers – water quality, 7<br />
rivers – dams and land improvements, 5 rivers –<br />
both the water quality and dams.<br />
The good quality of water achieved through the<br />
treatment of wastewater on the required level<br />
and the observance of good agricultural practice<br />
does not ensure the achievement of the good<br />
ecological status for 12 rivers because the status<br />
of the fish fauna is moderate or bad since the<br />
river continuum is interrupted by dams and the<br />
land improvement works have had adverse effect<br />
on the physical status.<br />
The coastal waters of <strong>Viru</strong>-<strong>Peipsi</strong> catchment area<br />
can be divided into two types: type I – oligohaline<br />
open coastal water (Narva Bay), and type<br />
III – mesohaline deep coastal water (western part<br />
of the Gulf of Finland).In summary, the existing<br />
data suggest that the ecological status of coastal<br />
sea in the <strong>Viru</strong> region is on the border between<br />
good and moderate. Most of the assessments<br />
suggest the good ecological status class.<br />
In cooperation with the experts of the French<br />
Geological Survey, 13 groundwater bodies were<br />
distinguished in the region. All groundwater bodies<br />
falling within the territory of the <strong>Viru</strong>-<strong>Peipsi</strong><br />
district are in a good qualitative and quantitative<br />
status, except the Ordovician groundwater body<br />
of Ida-<strong>Viru</strong> oil shale basin. Achievement of a good<br />
status of the latter groundwater body is not possible<br />
in the next few decades.<br />
All groundwater bodies, except the Ordovician-<br />
Cambrian groundwater body and the Silurian-Ordovician<br />
groundwater body beneath Devonian<br />
layers, belong to the “risk group”. This means<br />
that regardless of their good status there exist<br />
factors influencing the groundwater bodies and<br />
possibly affecting their good status in future.