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Recreational use of Pärnu river (essee) (0)

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Recreational use of Pärnu river


The catchment area of Pärnu river is 6920 km2 (For example Emajõe river drainage area is 9740 km2). The output is 70m3/s, mean altitude above the sea level - 50 m, maximum altitude - 78 m, mean flow 64,4 m3/s and precipitation 700 mm.
Main problems are floods , agricultural pollution, pollution from the local communities, drainage system and flood plain grasslands.
There is an excessive flooding in spring . The most known is the Soomaa swamplands flooding in april. It is called to be the fifth season.
A lot of rich soil are situated near the pärnu river, for example some of the biggest farmlands are situated in the Järva county . 83% of phosphorus and 79% of nitrogen originates from human activities of the total discharge of biogenes from Pärnu River basin. The soil does not bind a huge amount of the nutrients.
65 % of the treatment plants are over 15 years of age and most of them are programmed in a way, that when the water level exceeds some point, the sewage water will be sent directly to the outflow or in some cases to some biopools.
There are a lot of straight drainage systems, ditches and dykes near
Recreational use of Pärnu river-essee #1 Recreational use of Pärnu river-essee #2
Punktid 100 punkti Autor soovib selle materjali allalaadimise eest saada 100 punkti.
Leheküljed ~ 2 lehte Lehekülgede arv dokumendis
Aeg2013-01-24 Kuupäev, millal dokument üles laeti
Allalaadimisi 17 laadimist Kokku alla laetud
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