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    WW-I-9: Spring algal bloom in lakes

    The line chart WW-I-9 ’Spring algal bloom in lakes’ shows the calendar week with the onset of spring algal bloom – for the years 2003 to 2021 and for the North German Plain, the uplands as well as the Alps-and-foothills. In each case the median is stated for 20 selected lakes. There are no data available for the years of 2012 to 2015. Depending on the region, spring algal bloom in 2003 still occurred in the calendar weeks 17 to 19, whereas in 2021, this process began as early as the calendar weeks 11 to 13.

    … bloom in lakes Tags Competence Centre on Climate Impacts and Adaptation monitoring report … … WW-I-9: Spring algal bloom in lakes …

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    WW-I-6: Low water

    The bar chart WW-I-6 ‘Low water* shows – for the years of 1961 to 2021 – the number of low-water days in the water-balance related winter half-year (1st October of the previous year to 31st March) and in the water-balance related summer half-year (1st April to 30th September) respectively, prevailing in Germany’s river basins. The structure of the indicator is characterised by individual pronounced low-water events which occurred latterly in the period from 2018 to 2020.

    … Low water Tags Competence Centre on Climate Impacts and Adaptation monitoring report … … WW-I-6: Low water …

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    WW-I-3: Mean discharge

    The bar chart WW-I-3 ’Mean discharge’ shows the mean runoff depth for all river basins in Germany in the hydrological winter half-year (1st November of the previous year till 30th April) and in the hydrological summer half-year (1st May till 31st October) in the years of 1961 to 2021 in millimetres. The runoff depth in the hydrological summer half-year of 2021 decreased significantly during the period of observation, in the amount of slightly more than 100 millimetres.

    … Mean discharge Tags Competence Centre on Climate Impacts and Adaptation monitoring report … … WW-I-3: Mean discharge …

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    WW-R-2: GAK funds for flood protection

    The stacked columns chart WW-R-2 ‘GAK funds for flood protection’ shows the amount of public expenditure on investments made in flood protection measures in million Euros from Federal Government funding, Länder funding, and from additional national funding as well as EU funding during the time series 2007 to 2021. The expenditure has increased significantly since 2013 reaching its highest point in 2018 with just under 400 million Euros. It was possible to reach the same level in 2021.

    … WW-R-2: GAK funds for flood protection Source: BMEL (GAK reporting) Download image (114.36 kB) The following contents contain this medium: …

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    BAU-R-2: Green roofs in cities

    The illustration shows a biaxial diagram. For 2020 the green roof area in 15 cities with a population in excess of 500,000 inhabitants per square metre per inhabitant is illustrated by a bar chart. In addition, the percentage of green roof area in respect of the overall roof area examined is illustrated in dot form. In 2020 the green roof area amounted to 0.8 square metres per inhabitant and to approximately 10 per cent of the overall roof area examined.

    … roofs in cities Tags Competence Centre on Climate Impacts and Adaptation monitoring report … … BAU-R-2: Green roofs in cities …

  • Press release 55/09 from 04.08.2009 | Last changed: 03.07.2013

    REACH and plastics recycling

    … a pragmatic interpretation of substance identification with regard to impurities. Reporting obligations In accordance with REACH, recyclers must establish a profile …

  • Press release 2/2015 from 19.01.2015 | Last changed: 23.01.2017

    'Gold' awarded for new UBA office building

    square-based building with a wood face

    … Florian Pronold, Parliamentary State Secretary at the Federal Building Ministry, to confer the certification document for the new UBA office building in … Florian Pronold, Parliamentary State Secretary at the Federal Building Ministry, to confer the certification document for the new UBA office building in …

  • Press release 31/09 from 28.05.2009 | Last changed: 03.07.2013

    Pollutants in my neighbourhood

    … government.” There are now more than 4,000 industrial operators submitting annual reports to the new Pollutant Release and Transfer Register with data on their …

  • Press release 29/2025 from 16.07.2025 | Last changed: 21.07.2025

    German emissions nearly halved in 20 years of trading

    dampfende Kühltürme eines Kraftwerks an einem Gewässer

    … has been included in the EU ETS 1 since 2012. Currently, there is a general reporting and submission obligation only for emissions from flights that depart and …

  • DzU article from 10.07.2025 | Last changed: 04.08.2025

    Indicator: Emission of air pollutants

    Graph: The development of emissions of five air pollutants and an overall index relative to the base year 2005 (=100 %) can be seen. The trend of all substances decreases significantly, but ammonia only since 2014. The 2030 target (55 %) seems within reach.

    … are described in detail in the UBA’s annual ’German Informative Inventory Report’ . More detailed information: 'Emissionen prioritärer Luftschadstoffe' (in … are described in detail in the UBA’s annual ’German Informative Inventory Report’ . More detailed information: 'Emissionen prioritärer Luftschadstoffe' (in …