Hydrothermal monitoring data from the Cascade Range, northwestern United States

The monitoring sites can be grouped into three broad categories (Fig. 1): (1) sites with continuous pressure-temperature-conductivity monitoring and intermittent liquid sampling and discharge measurements; (2) sites with continuous temperature monitoring and intermittent gas sampling; and (3) sites that lack hourly data, but where the USGS has carried out intermittent flux measurements over a period of several decades.

For most sites, correlations have been developed to convert pressure-temperature-conductivity data into a flux of heat or (more often) to the flux of a solute species of interest. We relate (1) specific electrical conductance to lab-measured concentrations of dissolved constituents and (2) pressure (depth of water) to field-measured discharge. The metadata includes descriptions of the sites and methods and plots of the calculated fluxes.

The workbook files contain all of the data and correlations upon which those fluxes are based. Part of the database compilation is a list of relevant references for each area. These lists include all references cited in the metadata.