diff --git a/inst/doc/dataRetrieval.Rnw b/inst/doc/dataRetrieval.Rnw
index 58601b00d1328ada9477b97cf95b2f4e60e46cce..c73b1725a638e4dbc17aaa8ddb3997b87fb7aafb 100644
--- a/inst/doc/dataRetrieval.Rnw
+++ b/inst/doc/dataRetrieval.Rnw
@@ -276,7 +276,7 @@ Table \ref{tab:func} describes the functions available in the dataRetrieval pack
 %------------------------------------------------------------ 
 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}). Section \ref{sec:metadata} shows instructions for getting metadata that is attached to each returned data frame.
 
-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 dataRetrieval package as \enquote{siteNumber}).  Often (but not always), these ID's are 8 digits for streamgages, and 15 digits for groundwater gages.  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}.
+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 dataRetrieval package as \enquote{siteNumber}).  Often (but not always), these ID's are 8 digits for surface-water sites and 15 digits for groundwater sites.  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}. 
 
diff --git a/inst/doc/dataRetrieval.pdf b/inst/doc/dataRetrieval.pdf
index 468e549d3505cf12020541f50c9d2ea2046cee7c..f0a880e77aaa60d3902122a04571c1c05935d22c 100644
Binary files a/inst/doc/dataRetrieval.pdf and b/inst/doc/dataRetrieval.pdf differ
diff --git a/vignettes/dataRetrieval.Rnw b/vignettes/dataRetrieval.Rnw
index 58601b00d1328ada9477b97cf95b2f4e60e46cce..c73b1725a638e4dbc17aaa8ddb3997b87fb7aafb 100644
--- a/vignettes/dataRetrieval.Rnw
+++ b/vignettes/dataRetrieval.Rnw
@@ -276,7 +276,7 @@ Table \ref{tab:func} describes the functions available in the dataRetrieval pack
 %------------------------------------------------------------ 
 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}). Section \ref{sec:metadata} shows instructions for getting metadata that is attached to each returned data frame.
 
-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 dataRetrieval package as \enquote{siteNumber}).  Often (but not always), these ID's are 8 digits for streamgages, and 15 digits for groundwater gages.  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}.
+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 dataRetrieval package as \enquote{siteNumber}).  Often (but not always), these ID's are 8 digits for surface-water sites and 15 digits for groundwater sites.  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}. 
 
diff --git a/vignettes/figure/getNWIStemperaturePlot-1.pdf b/vignettes/figure/getNWIStemperaturePlot-1.pdf
index 611537b3bd99fa735aafca85ee54a286580d37e8..b787b6f6e41f7be1a10cf01a0192f6978cb2fcae 100644
Binary files a/vignettes/figure/getNWIStemperaturePlot-1.pdf and b/vignettes/figure/getNWIStemperaturePlot-1.pdf differ