Generalized average annual yield efficiency (in percent of annual precipitation) for the Black Hills area, South Dakota, water years 1950-98
收藏data.gov2026-01-17 收录
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This dataset provides lines of equal average annual yield efficiency for water years 1950-98 in the Black Hills area of South Dakota and Wyoming.
本数据集提供了1950至1998年水文年（water year）时段内，美国南达科他州与怀俄明州黑山（Black Hills）地区的年均产水效率等值线数据。
