Modeled Sources, Transport, and Accumulation of Dissolved Solids in Water Resources of the Southwestern United States.

ABSTRACT: Information on important source areas for dissolved solids in streams of the southwestern United States, the relative share of deliveries of dissolved solids to streams from natural and human sources, and the potential for salt accumulation in soil or groundwater was developed using a SPAtially Referenced Regressions On Watershed attributes model. Predicted area-normalized reach-catchment delivery rates of dissolved solids to streams ranged from <10 (kg/year)/km(2) for catchments with little or no natural or human-related solute sources in them to 563,000 (kg/year)/km(2) for catchments that were almost entirely cultivated land. For the region as a whole, geologic units contributed 44% of the dissolved-solids deliveries to streams and the remaining 56% of the deliveries came from the releas

SUBMITTER: Anning DW 

PROVIDER: S-EPMC3307630 | biostudies-literature | 2011 Oct

REPOSITORIES: biostudies-literature