The daily averages of outflows at a total of 59 levels were calculated for the outflow years 1976.
taken from the LfU’s WISKI database until 2009. After cleaning the measurement data
to fail, the annual mean value (outflow year November-October) of the outflow was
calculated. For measuring points whose discharge is not yet recorded in the WISKI, other
Sources, such as: German Water History Yearbook (DGJ), Water Information System (Pegelonline) and River Basin Community (FGG) Elbe, used.
A trend was established from the annual averages of the outflow of the years 1980 to 2009.
With the help of the trend function, a starting value for the year 1980 and a final value for the year
Calculated in 2009. The calculation was also carried out for the period 1990 to 2009.
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