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The WEI+ is an advanced geo-referenced version of the WEI. It quantifies how much water is abstracted monthly or seasonally and how much water is returned before or after use to the environment via river basins. The difference between water abstraction and return is regarded as the amount of water used.

Previous comments

scheidand (Andreas Scheidleder) 26 Aug 2022 15:33:53

lastsentence: .....as the amount of water used. better use the term ‘consumed’.
- giovabra (Giovanni Braca) 01 Sep 2022 17:15:51
  
  lastsentence: .....as the amount of water used. better use the term ‘consumed’.
  
  Italy: we agree
  - zalllnih (Nihat Zal) 15 Sep 2022 09:34:07
    
    Thank for your comment, the respective text will be revised accordingly
    
    lastsentence: .....as the amount of water used. better use the term ‘consumed’.
    
    Italy: we agree
- zalllnih (Nihat Zal) 15 Sep 2022 09:33:05
  
  Thank you for the comment, well-noted
  
  lastsentence: .....as the amount of water used. better use the term ‘consumed’.
siniclau (Lauris Sinics) 30 Aug 2022 10:04:34

In case of Latvia, there is annual data collection on water abstraction, use and return. Only water users with seasonal activity have an obligation to report monthly data, while largest majority of respondents report only annual values.

Also, there are common situations when water, abstracted in the one river basin, can be returned to environment in another one. Thus, there will be territorial units, for which calculating of WEI+ indicator will be impossible, as it will return absurd results.
- zalllnih (Nihat Zal) 15 Sep 2022 09:42:00
  
  Thank you for your feedback and sharing your experiences, we deal with similar cases across the scales and resolutions we elaborate the WEI+. Under the current implementation of the WEI+, temporal disaggregation of annual data is performed based on constant coefficient per sector by using surrogate data. We are fully aware of potential uncertainties around such methodological approach. However, we are continuously improving our methods and approaches to provide more accurate indicator results. Recently, we have started employing the Artificial Intelligence with the computation of the WEI+ based on multi-parametric variables of drivers and pressures to come up with more accurate approximation to the spatial and temporal disaggregation of the data on water abstraction. However, it should be noted here that still there is a long way to achieve such convincing outcomes.
  
  In case of Latvia, there is annual data collection on water abstraction, use and return. Only water users with seasonal activity have an obligation to report monthly data, while largest majority of respondents report only annual values.
  
  Also, there are common situations when water, abstracted in the one river basin, can be returned to environment in another one. Thus, there will be territorial units, for which calculating of WEI+ indicator will be impossible, as it will return absurd results.
guzmojan (Janka Guzmová) 31 Aug 2022 13:27:30

Describe the difference between WEI and WEI+.
- giovabra (Giovanni Braca) 01 Sep 2022 17:16:10
  
  Describe the difference between WEI and WEI+.
  
  Italy: we agree
- zalllnih (Nihat Zal) 15 Sep 2022 09:43:18
  
  Thank you for the comment. Given the text adjustments based on the indicator definition, we will re-consider to provide more background on the development from WEI to WEI+
  
  Describe the difference between WEI and WEI+.

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