diff --git a/R/whatNWISData.r b/R/whatNWISData.r
index 933147d95c67ebb2efb707a63a527bbdbc5a57da..7d32e365e3993e9ff290394bc6335df15f62c6eb 100644
--- a/R/whatNWISData.r
+++ b/R/whatNWISData.r
@@ -12,9 +12,48 @@
 #' @param parameterCd character vector of valid parameter codes to return. Defaults to "all" which will not perform a filter.
 #' @param statCd character vector of all statistic codes to return. Defaults to "all" which will not perform a filter.
 #' @keywords data import USGS web service
-#' @return retval dataframe with all information found in the expanded site file
+#' @return A data frame with the following columns:
+#' \tabular{lll}{
+#' Name \tab Type \tab Description \cr
+#' agency_cd \tab character \tab The NWIS code for the agency reporting the data\cr
+#' site_no \tab character \tab The USGS site number \cr
+#' station_nm \tab character \tab Site name \cr 
+#' site_tp_cd \tab character \tab Site type \cr
+#' dec_lat_va \tab numeric \tab Decimal latitude\cr
+#' dec_long_va \tab numeric \tab Decimal longitude \cr
+#' coord_acy_cd \tab character \tab Latitude-longitude accuracy \cr
+#' dec_coord_datum_cd \tab character \tab Decimal Latitude-longitude datum \cr
+#' alt_va \tab character \tab Altitude of Gage or land surface \cr
+#' alt_acy_va \tab character \tab Altitude accuracy \cr
+#' alt_datum_cd \tab character \tab Altitude datum \cr
+#' huc_cd \tab character \tab Hydrologic unit code \cr
+#' data_type_cd \tab character \tab Data type \cr
+#' parm_cd \tab character \tab Parameter code \cr
+#' stat_cd \tab character \tab Statistical code \cr
+#' dd_nu \tab character \tab Internal database key \cr
+#' loc_web_ds \tab character \tab Additional measurement description \cr
+#' medium_grp_cd \tab character \tab Medium group code \cr
+#' parm_grp_cd \tab character \tab Parameter group code \cr
+#' srs_id \tab character \tab SRS ID \cr
+#' access_cd \tab character \tab Access code \cr
+#' begin_date \tab Date \tab Begin date \cr
+#' end_date \tab Date \tab End date \cr
+#' count_nu \tab integer \tab Record count\cr
+#' parameter_group_nm \tab character \tab Parameter group name \cr
+#' parameter_nm \tab character \tab Parameter name \cr
+#' casrn \tab character \tab Chemical Abstracts Service (CAS) Registry Number \cr
+#' srsname \tab character \tab Substance Registry Services \cr
+#' parameter_units \tab character \tab Parameter units \cr
+#' }
+#'
+#' There are also several useful attributes attached to the data frame:
+#' \tabular{lll}{
+#' Name \tab Type \tab Description \cr
+#' url \tab character \tab The url used to generate the data \cr
+#' comment \tab character \tab Header comments from the RDB file \cr
+#' queryTime \tab POSIXct \tab The time the data was returned \cr
+#' }
 #' @export
-#' @import RCurl
 #' @import lubridate
 #' @examples
 #' \dontrun{
diff --git a/man/whatNWISData.Rd b/man/whatNWISData.Rd
index 4675f19b375ccb9714c70fbb2e71d14e1b3e34ad..608b883b54de5d8f23671027e1c8f0df12eeff96 100644
--- a/man/whatNWISData.Rd
+++ b/man/whatNWISData.Rd
@@ -20,7 +20,47 @@ instantaneous values)}
 \item{statCd}{character vector of all statistic codes to return. Defaults to "all" which will not perform a filter.}
 }
 \value{
-retval dataframe with all information found in the expanded site file
+A data frame with the following columns:
+\tabular{lll}{
+Name \tab Type \tab Description \cr
+agency_cd \tab character \tab The NWIS code for the agency reporting the data\cr
+site_no \tab character \tab The USGS site number \cr
+station_nm \tab character \tab Site name \cr
+site_tp_cd \tab character \tab Site type \cr
+dec_lat_va \tab numeric \tab Decimal latitude\cr
+dec_long_va \tab numeric \tab Decimal longitude \cr
+coord_acy_cd \tab character \tab Latitude-longitude accuracy \cr
+dec_coord_datum_cd \tab character \tab Decimal Latitude-longitude datum \cr
+alt_va \tab character \tab Altitude of Gage or land surface \cr
+alt_acy_va \tab character \tab Altitude accuracy \cr
+alt_datum_cd \tab character \tab Altitude datum \cr
+huc_cd \tab character \tab Hydrologic unit code \cr
+data_type_cd \tab character \tab Data type \cr
+parm_cd \tab character \tab Parameter code \cr
+stat_cd \tab character \tab Statistical code \cr
+dd_nu \tab character \tab Internal database key \cr
+loc_web_ds \tab character \tab Additional measurement description \cr
+medium_grp_cd \tab character \tab Medium group code \cr
+parm_grp_cd \tab character \tab Parameter group code \cr
+srs_id \tab character \tab SRS ID \cr
+access_cd \tab character \tab Access code \cr
+begin_date \tab Date \tab Begin date \cr
+end_date \tab Date \tab End date \cr
+count_nu \tab integer \tab Record count\cr
+parameter_group_nm \tab character \tab Parameter group name \cr
+parameter_nm \tab character \tab Parameter name \cr
+casrn \tab character \tab Chemical Abstracts Service (CAS) Registry Number \cr
+srsname \tab character \tab Substance Registry Services \cr
+parameter_units \tab character \tab Parameter units \cr
+}
+
+There are also several useful attributes attached to the data frame:
+\tabular{lll}{
+Name \tab Type \tab Description \cr
+url \tab character \tab The url used to generate the data \cr
+comment \tab character \tab Header comments from the RDB file \cr
+queryTime \tab POSIXct \tab The time the data was returned \cr
+}
 }
 \description{
 Imports a table of available parameters, period of record, and count. See \url{http://waterservices.usgs.gov/rest/Site-Service.html}