diff --git a/R/readWQPqw.r b/R/readWQPqw.r
index 124ee0b43697d08c21d73f32d9a49d4090bba795..0f1ec4955921455ddae4e992d8fee59457bf725c 100644
--- a/R/readWQPqw.r
+++ b/R/readWQPqw.r
@@ -14,6 +14,10 @@
 #' retrieval for the earliest possible record. Date arguments are always specified in local time.
 #' @param endDate character ending date for data retrieval in the form YYYY-MM-DD. Default is "" which indicates
 #' retrieval for the latest possible record. Date arguments are always specified in local time.
+#' @param tz character to set timezone attribute of datetime. Default is an empty quote, which converts the 
+#' datetimes to UTC (properly accounting for daylight savings times based on the data's provided tz_cd column).
+#' Possible values to provide are "America/New_York","America/Chicago", "America/Denver","America/Los_Angeles",
+#' "America/Anchorage","America/Honolulu","America/Jamaica","America/Managua","America/Phoenix", and "America/Metlakatla"
 #' @keywords data import USGS web service
 #' @return A data frame with at least the following columns:
 #' \tabular{lll}{