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Calcium, magnesium and total dissolved solids data as well as modeled salinity and mass balance estimates for Lake Powell, 1952-2017

Data for journal manuscript: Calcite precipitation in Lake Powell reduces alkalinity and total salt loading to the Lower Colorado River Basin


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Deemer, B.R., 2019, Calcium, magnesium and total dissolved solids data as well as modeled salinity and mass balance estimates for Lake Powell, 1952-2017: U.S. Geological Survey data release,


These data were compiled to quantify the role of Lake Powell in modulating salinity and reducing overall salt flux from the Upper Colorado River Basin downstream. In addition, these data were used to infer summertime calcite precipitation in Lake Powell (the major proposed sink for salt within the system). The Lake Powell Calcium Magnesium data contains summertime surface water calcium and magnesium concentrations along three transects that span the two major inflows to Lake Powell and the region of Lake Powell closest to the dam. The Modeled Salinity data was used to compare measured total dissolved solid concentrations at Lees Ferry to the instantaneous flow-weighted concentration of total dissolved solid entering the reservoir at [...]


Point of Contact :
Bridget R Deemer
Originator :
Bridget R Deemer
Metadata Contact :
Bridget R Deemer
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase
SDC Data Owner :
Southwest Biological Science Center
USGS Mission Area :

Attached Files

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The purpose of this dataset is to compare pre dam and post dam salinity dynamics in the Lake Powell reach of the Colorado River as well as to describe spatial patterns in surface water summertime calcium and magnesium concentrations in Lake Powell reservoir and to look for evidence of calcite precipitation within the reservoir.


The author(s) of these data request that data users contact them regarding intended use and to assist with understanding limitations and interpretation. Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty.

Additional Information


Type Scheme Key
DOI doi:10.5066/P9A9P44R

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