U.S. Geological Survey 2001 1.0 map Reston, Virginia, USA U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?realstx Approximately 5,000 of the 6,900 U.S. Geological Survey sampling stations are equipped with telemetry to transmit data on streamflow, temperature, and other parameters back to a data base for real-time viewing via the World Wide Web. A map of the realtime stations is produced every day. The primary purpose of this coverage is to produce an imagemap for use on the World Wide Web. None. Updated daily, see item line in coverage. Every Day Complete Every Day -164.168 -64.780 70.281 17.731 None hydrologic water real-time streamflow stage inlandWaters None None U.S. Geological Survey Water Webserver Team mailing address

12201 Sunrise Valley Drive, MS 439

Reston VA 20192 USA 1-888-275-8747 h2oteam@usgs.gov Please use email. SunOS, 5.6, sun4u UNIX, ARC/INFO version 8.0.2 All locations are points. This coverage includes only those stations with data actually being served on the WWW at the time of compilation. Some stations -- and sometimes whole states -- may be excluded because of temporary webserver or network problems. In addition, a station with data may not be shown on the map if its name and location are not yet in the master list. Latitudes and Longitude are specified to the nearest second. The position is determined from 1:24,000-scale maps, where available, but other lower scale (i.e. less resolution) maps may be used also. Each USGS District Office serves the realtime data of the stations it services. A list of these pages may be seen at http://water.usgs.gov/realtime.html Every District realtime page (some have several pages) contains a list of the stations for which realtime data are available and a link to the data for each station. Every day, an automatic process retrieves the realtime pages from each District and parses them to find the stations served and the URL for each station's data. The station numbers on this list are matched against a master list of USGS stations to find the station name and the latitude/longitude of each realtime station. This information is used to prepare an updated point coverage. CLASS values for the flow are: > le 0 Not valid (internal use) > 1 New minimum > 2 ge old minimum and le 5th percentile > 3 gt 5th percentile and le 10th percentile > 4 gt 10th percentile and le 25th percentile > 5 gt 25th percentile and le 75th percentile > 6 gt 75th percentile and le 90th percentile > 7 gt 90th percentile and le old maximum > 8 New maximum Every Day Point Point 6522 0.002 0.002 Decimal degrees North American Datum of 1983 GRS1980 6,378,137 298.257 Each USGS station contains a unique identification number up to 18-digits long. The URL represents the most recent known location for accessing the real-time data for the station. > REALSTX.PAT: > COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 AREA 4 12 F 3 > 5 PERIMETER 4 12 F 3 > 9 REALSTX# 4 5 B - > 13 REALSTX-ID 4 5 B - > 17 STAID 15 15 C - > 32 STANAME 50 50 C - > 82 ST 2 2 C - > 84 HUC 8 8 C - > 92 CLASS 4 5 B - > 96 FLOW 4 12 F 2 > 100 TIME 35 35 C - > 135 LATDD 4 10 F 6 > 139 LONDD 4 11 F 6 > 143 URL 150 150 C - > 293 WORKA 4 5 B - > 297 DATUMOLD 10 10 C - > 307 LONDDNEW 4 10 F 4 > 311 LATDDNEW 4 10 F 4 > 315 DATUMNEW 10 10 C - none U.S. Geological Survey Ask USGS - Water Webserver Team mailing

507 National Center

Reston VA 20192 1-888-275-8747 (1-888-ASK-USGS) http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+realstx Although this data set has been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Export Full coverage zipped 1 http://water.usgs.gov/waterwatch/realstx/realstx.e00.gz Shape Full coverage zipped 1 http://water.usgs.gov/waterwatch/realstx/realstx_shp.tar.gz None. This dataset is provided by USGS as a public service. 20060125 U.S. Geological Survey Ask USGS -- Water Webserver Team mailing

507 National Center

Reston VA 20192 1-888-275-8747 (1-888-ASK-USGS) http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+realstx FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998