diff --git a/R/retrieveNWISData.r b/R/retrieveNWISData.r
index a87e019e61602dfe8e3b9e774e8379435540e2ff..3f2447b172509fa593bb5a7e9e1eb948e3c77ffc 100644
--- a/R/retrieveNWISData.r
+++ b/R/retrieveNWISData.r
@@ -26,6 +26,7 @@ retrieveNWISData <- function (siteNumber,ParameterCd,StartDate,EndDate,StatCd="0
   
   url <- constructNWISURL(siteNumber,ParameterCd,StartDate,EndDate,"dv",StatCd)
   data <- getWaterML1Data(url)
+  data$dateTime <- as.Date(data$dateTime)
 
   return (data)
 }
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