Look for complete geospatial metadata in this layer's associated xml document available from the download link Understanding the interaction between water supply and ecosystem demand informs both the extent of moisture stress and the amount of water available for storage. The quality element is described and represented by one metric: percent impervious surface (indicated by asterisk). * Metric Name: Element Representation: Water Quality * Translation: Where is water quality greater? * Translation method and outcome: Condition scores range from +1 to -1 representing more favorable to less favorable conditions, respectively. **** The proposition of more favorable is based on the objective of greater water quantity.