diff --git a/R/retrieveUnitNWISData.r b/R/retrieveUnitNWISData.r
index 1e2d5bd6fe1e7d10b9f53b9fa17001a2728f6333..657ae6a37ed92636c3d092def3f945bac3d00eb8 100644
--- a/R/retrieveUnitNWISData.r
+++ b/R/retrieveUnitNWISData.r
@@ -5,9 +5,9 @@
 #' A list of statistic codes can be found here: \url{http://nwis.waterdata.usgs.gov/nwis/help/?read_file=stat&format=table}
 #'
 #' @param siteNumber string USGS site number.  This is usually an 8 digit number
-#' @param ParameterCd string USGS parameter code.  This is usually an 5 digit number.
-#' @param StartDate string starting date for data retrieval in the form YYYY-MM-DD.
-#' @param EndDate string ending date for data retrieval in the form YYYY-MM-DD.
+#' @param parameterCd string USGS parameter code.  This is usually an 5 digit number.
+#' @param startDate string starting date for data retrieval in the form YYYY-MM-DD.
+#' @param endDate string ending date for data retrieval in the form YYYY-MM-DD.
 #' @param interactive logical Option for interactive mode.  If true, there is user interaction for error handling and data checks.
 #' @param format string, can be "tsv" or "xml", and is only applicable for daily and unit value requests.  "tsv" returns results faster, but there is a possiblitiy that an incomplete file is returned without warning. XML is slower, 
 #' but will offer a warning if the file was incomplete (for example, if there was a momentary problem with the internet connection). It is possible to safely use the "tsv" option, 
@@ -17,15 +17,15 @@
 #' @export
 #' @examples
 #' siteNumber <- '05114000'
-#' ParameterCd <- '00060'
-#' StartDate <- as.character(Sys.Date())
-#' EndDate <- as.character(Sys.Date())
+#' parameterCd <- '00060'
+#' startDate <- as.character(Sys.Date())
+#' endDate <- as.character(Sys.Date())
 #' # These examples require an internet connection to run
-#' rawData <- retrieveNWISunitData(siteNumber,ParameterCd,StartDate,EndDate)
-#' rawData2 <- retrieveNWISunitData(siteNumber,ParameterCd,StartDate,EndDate,"tsv")
-retrieveNWISunitData <- function (siteNumber,ParameterCd,StartDate,EndDate,format="xml",interactive=TRUE){  
+#' rawData <- retrieveNWISunitData(siteNumber,parameterCd,startDate,endDate)
+#' rawData2 <- retrieveNWISunitData(siteNumber,parameterCd,startDate,endDate,"tsv")
+retrieveNWISunitData <- function (siteNumber,parameterCd,startDate,endDate,format="xml",interactive=TRUE){  
   
-  url <- constructNWISURL(siteNumber,ParameterCd,StartDate,EndDate,"uv",format=format,interactive=interactive)
+  url <- constructNWISURL(siteNumber,parameterCd,startDate,endDate,"uv",format=format,interactive=interactive)
   if (format == "xml") {
     data <- getWaterML1Data(url)
   } else {