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A 2026 compilation provides predictive soil property maps for the Colorado River Basin above Hoover Dam, generated using random forest models on environmental raster layers and field samples. The dataset includes estimates for soil pH, texture fractions, electrical conductivity, organic matter, and other properties at 7 depths, with model accuracy (R²) ranging from 0.20 to 0.76. More than 90% of the underlying soils data was sampled since the year 2000.
Primary data format is XML; users may need specific geospatial tools for processing. The license is listed as 'notspecified', requiring verification before commercial use.