As part of the Rio Grande Valley National Water-Quality Assessment Program, samples were collected at 34 sites in the upper Rio Grande Basin in Colorado and New Mexico during June and September 1994. The focus of the sampling was on trace-element concentrations in the water column, suspended sediment, and bed material. Water-column samples were analyzed for major constituent, nutrient, dissolved organic carbon, and dissolved trace- element concentrations. Suspended-sediment samples were analyzed for suspended- sediment and total trace-element concentrations. Bed-material samples were analyzed for nutrient and total trace-element concentrations. Physical properties of the water column also were measured at each site.
Abstract from Open-File Report 97-644
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