diff --git a/vignettes/dataRetrieval.Rnw b/vignettes/dataRetrieval.Rnw
index 6302b4e0b2c9087bf1f057cc1a4689d1d14891d0..da3f1b97ab7388f1d09c95411938a73fe6739dd8 100644
--- a/vignettes/dataRetrieval.Rnw
+++ b/vignettes/dataRetrieval.Rnw
@@ -234,7 +234,7 @@ Table \ref{tab:func} describes the functions available in the dataRetrievaldemo
& startDate & \\
& endDate & \\
& expanded & \\
- [5pt]\texttt{readNWISunit} & siteNumber & NWIS water quality data\\
+ [5pt]\texttt{getNWISuv} & siteNumber & NWIS water quality data\\
& parameterCd & \\
& startDate & \\
& endDate & \\
@@ -272,11 +272,8 @@ Table \ref{tab:func} describes the functions available in the dataRetrievaldemo
\section{USGS Web Retrievals}
\label{sec:genRetrievals}
%------------------------------------------------------------
-In this section, five examples of Web retrievals document how to get raw data. This data includes site information (\ref{sec:usgsSite}), measured parameter information (\ref{sec:usgsParams}), historical daily values(\ref{sec:usgsDaily}), unit values (which include real-time data but can also include other sensor data stored at regular time intervals) (\ref{sec:usgsRT}), and water quality data (\ref{sec:usgsWQP}). We will use the Choptank River near Greensboro, MD as an example. Daily discharge measurements are available as far back as 1948. Additionally, nitrate has been measured since 1964.
+In this section, examples of Web retrievals document how to get raw data. This data includes site information (\ref{sec:usgsSite}), measured parameter information (\ref{sec:usgsParams}), historical daily values(\ref{sec:usgsDaily}), unit values (which include real-time data but can also include other sensor data stored at regular time intervals) (\ref{sec:usgsRT}), water quality data (\ref{sec:usgsWQP}), groundwater level data (\ref{sec:gwl}), peak flow data (\ref{sec:peak}), rating curve data (\ref{sec:rating}, and surface-water measurement data (\ref{sec:meas}). We will mainly use the Choptank River near Greensboro, MD as an example. Daily discharge measurements are available as far back as 1948. Additionally, nitrate has been measured since 1964.
-% %------------------------------------------------------------
-% \subsection{Introduction}
-% %------------------------------------------------------------
The USGS organizes hydrologic data in a standard structure. Streamgages are located throughout the United States, and each streamgage has a unique ID (referred in this document and throughout the dataRetrievaldemo package as \enquote{siteNumber}). Often (but not always), these ID's are 8 digits. The first step to finding data is discovering this siteNumber. There are many ways to do this, one is the National Water Information System: Mapper \url{http://maps.waterdata.usgs.gov/mapper/index.html}.
Once the siteNumber is known, the next required input for USGS data retrievals is the \enquote{parameter code}. This is a 5-digit code that specifies the measured parameter being requested. For example, parameter code 00631 represents \enquote{Nitrate plus nitrite, water, filtered, milligrams per liter as nitrogen}, with units of \enquote{mg/l as N}. A complete list of possible USGS parameter codes can be found at \url{http://nwis.waterdata.usgs.gov/usa/nwis/pmcodes?help}.
@@ -435,6 +432,7 @@ parameterINFO$parameter_nm
@
Parameter information can obtained from \url{http://nwis.waterdata.usgs.gov/usa/nwis/pmcodes}
\FloatBarrier
+
%------------------------------------------------------------
\subsection{Daily Values}
\label{sec:usgsDaily}
@@ -514,14 +512,14 @@ There are occasions where NWIS values are not reported as numbers, instead there
\subsection{Unit Values}
\label{sec:usgsRT}
%------------------------------------------------------------
-Any data collected at regular time intervals (such as 15-minute or hourly) are known as \enquote{unit values.} Many of these are delivered on a real time basis and very recent data (even less than an hour old in many cases) are available through the function \texttt{readNWISunit}. Some of these unit values are available for many years, and some are only available for a recent time period such as 120 days. Here is an example of a retrieval of such data.
+Any data collected at regular time intervals (such as 15-minute or hourly) are known as \enquote{unit values.} Many of these are delivered on a real time basis and very recent data (even less than an hour old in many cases) are available through the function \texttt{getNWISuv}. Some of these unit values are available for many years, and some are only available for a recent time period such as 120 days. Here is an example of a retrieval of such data.
-<<label=getNWISUnit, echo=TRUE>>=
+<<label=getNWISuv, echo=TRUE>>=
parameterCd <- "00060" # Discharge
startDate <- "2012-05-12"
endDate <- "2012-05-13"
-dischargeToday <- readNWISunit(siteNumber, parameterCd,
+dischargeToday <- getNWISuv(siteNumber, parameterCd,
startDate, endDate)
@
@@ -531,7 +529,7 @@ The retrieval produces the following dataframe:
head(dischargeToday)
@
-Note that time now becomes important, so the variable datetime is a POSIXct, and the reported time zone is included in a separate column. The datetime column is converted automatically to \enquote{UTC} (Coordinated Universal Time). To override the timezone
+Note that time now becomes important, so the variable datetime is a POSIXct, and the reported time zone is included in a separate column. The datetime column is converted automatically to \enquote{UTC} (Coordinated Universal Time). To override the timezone,
Data are retrieved from \url{http://waterservices.usgs.gov/rest/IV-Test-Tool.html}. There are occasions where NWIS values are not reported as numbers, instead a common example is \enquote{Ice.} Any value that cannot be converted to a number will be reported as NA in this package.
@@ -573,6 +571,26 @@ title(siteINFO$station.nm[1])
\FloatBarrier
+%------------------------------------------------------------
+\subsection{Ground water level data}
+\label{sec:gwl}
+%------------------------------------------------------------
+
+%------------------------------------------------------------
+\subsection{Peak flow data}
+\label{sec:peak}
+%------------------------------------------------------------
+
+%------------------------------------------------------------
+\subsection{Rating curve data}
+\label{sec:rating}
+%------------------------------------------------------------
+
+%------------------------------------------------------------
+\subsection{Surface-water measurement data}
+\label{sec:meas}
+%------------------------------------------------------------
+
%------------------------------------------------------------
\subsection{URL Construction}
\label{sec:usgsURL}