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Federal
Isohyetal map showing distribution of average annual precipitation for the Black Hills area, South Dakota, water years 1961-90
Department of the Interior —
This dataset provides lines of equal average annual precipitation for water years 1961-90 in the Black Hills area of South Dakota. -
Federal
Isohyetal map showing distribution of average annual precipitation for the Black Hills area, South Dakota, water years 1950-98
Department of the Interior —
This dataset provides lines of equal average annual precipitation for water years 1950-98 in the Black Hills area of South Dakota and Wyoming.