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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.

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