Principal aquifers of California, a Common card

The card carries these facts from its Wikipedia article.

• Per the Oxford Dictionary of Environment and Conservation, an aquifer is a "body of permeable and/or porous rock that is underlain by impermeable rock and through which groundwater is able to flow." The state of California recognizes 515 groundwater basins and subbasins within these aquifers.
• The groundwater basin of a given aquifer may be managed by a water district, for example the Coachella Valley Water District manages the underground water in California's Coachella Valley groundwater basin, which lies within the Colorado River hydrologic region, one of the 13 top-level California state hydrologic regions and drainage areas.
• The California state hydrologic regions and drainage areas are quite similar but not identical to the federal hydrologic unit system's California water resource region surface-water drainage basins.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Principal aquifers of California article was read about 1,400 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 47 and blocks with 26: each hit it takes is cut by 10 %.

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The cards just above and just below Principal aquifers of California in the power ranking, all domains together.