Long term variation in water colour from Yorkshire catchments.

  title={Long term variation in water colour from Yorkshire catchments.},
  author={Carol D Watts and Pamela S. Naden and John Machell and Joseph Banks},
  journal={The Science of the total environment},
  volume={278 1-3},
Water colour is a problem in the upland water-gathering grounds of the UK. It has shown considerable variation over recent years and this needs to be put into the longer-term context. In order to do this, factors to convert water colour measured in absorbance units per metre (Au/m) to Hazen units are presented for ten sites in the Yorkshire region using data from August 1997 to June 1998. The conversion factors are site-specific and there is some evidence that they may show seasonal variation… CONTINUE READING

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