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The atmospheric water balance over the upper Colorado River is evaluated twice daily for the seven winter seasons 1957?1963. The atmospheric water balance yields the exchange of water and water vapor at the earth-atmosphere interface through the observation of the spatial and time distributions and fluxes of water vapor in the atmosphere over the basin. The quantity precipitation minus evaporation is determined as a residual of the computation and is accumulated for daily and seasonal values. In addition, a natural period analysis is performed; the natural periods are delineated by homogeneity in the parameter precipitation minus evaporation. The dry periods are shown to exhibit a seasonal trend in evaporation rate...
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These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This dataset provides monthly precipitation data for 94 precipitation stations in the Black Hills area of South Dakota. The dataset contains measured values for months with complete record. The dataset contains estimated monthly values for months with missing or incomplete records.
    map background search result map search result map Measured and estimated monthly precipitation values for precipitation gages in the Black Hills area, South Dakota, water years 1931-98 Measured and estimated monthly precipitation values for precipitation gages in the Black Hills area, South Dakota, water years 1931-98