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The image consists of a line graph titled "River Water Quality in the UK," depicting the percentage of river water with good chemical quality from 1990 to 2002 across four regions: Wales, Northern Ireland, England, and Scotland. In 1990, Wales had 75%, Northern Ireland had 45%, England had 70%, and Scotland had 80%; in 1992, Wales had 75%, Northern Ireland had 45%, England had 65%, and Scotland had 85%; in 1994, Wales had 85%, Northern Ireland had 45%, England had 75%, and Scotland had 90%; in 1996, Wales had 85%, Northern Ireland had 65%, England had 85%, and Scotland had 85%; in 1998, Wales had 90%, Northern Ireland had 45%, England had 85%, and Scotland had 85%; in 2000, Wales had 95%, Northern Ireland had 55%, England had 85%, and Scotland had 85%; in 2002, Wales had 95%, Northern Ireland had 65%, England had 90%, and Scotland had 80%.
Given the complexity of the image, the above description may not be entirely accurate.
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The line graph depicts the proportion of water in UK rivers that is beneficial to have a better synthetic quality from 1990 to 2002. It is measured in percentage.
Generally, while the rate of tributaries in Wales saw a decrease, with the exception of the others which increased throughout the timeframe. On top of that, Northern Ireland had a larger demand than the three remaining types of rivers.
It is obvious that the ratio of Northern Ireland’s rivers stayed constant at about 86 between 1990 and 1998 before rising to 95 in 2000, then returned to stability in 2002 with the same data. It is similar to England rivers which increased to 45 in 1990, then reached a peak of 68 by 1996. This trend had a steep decline to 30 after 2 years, however, it came back to 49 in 2002. Scotland also rose from 22 in 1990 to 30 by 1992. This figure remained stable at about 30 until 4 years after 1992. After that, it increased significantly to around 60 in 2000 before going downward to 40 by 2002.
However, it was opposite with rivers in Wales. The data showed stability from 1990 to 1998 at about 95 before declining to approximately 80 by 2002
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