Fig. 1

Distribution of points of diversion (PODs) and places of use (POUs) across water use categories and states. The numbers following the category names in the legend indicate the number of unique POD and POU coordinates for each category. The map shows 353,694 unique points from which 335,355 pairs are PODs and 10,563 are POUs and 7,776 are both PODs and POUs, though this represents only a portion of United States Water Withdrawals (USWWD) records, as many lack spatial coordinates. Hatched states have no data, while grey states have USWWD records but do not have associated spatial coordinates.