Daily data is pulled from \url{http://waterservices.usgs.gov/rest/DV-Test-Tool.html}.
The column names can be automatically adjusted based on the parameter and statistic codes using the \texttt{renameColumns} function. This is not necessary, but may be useful when analyzing the data.
The column names can be automatically adjusted based on the parameter and statistic codes using the \texttt{renameNWISColumns} function. This is not necessary, but may be useful when analyzing the data.