U.S. Geological Survey 2007 vector digital data Reston, VA U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?ofr07-1056_dn_post_gps.shp Ryan F. Thompson Michaela R. Johnson Michael J. Anderson 2007 U.S. Geological Survey Scientific Investigations Report 2007-1056 Reston, VA U.S. Geological Survey http://pubs.usgs.gov/of/2007/1056/ This data set contains land surface elevations on dry and wadeable portions of transects for the hydrographic surveys on the Missouri River below Gavins Point Dam near River Mile 761.4. This data provides land surface elevations of shallow-water, shore, and highbank for the Missouri River following construction of Emergent Sandbar Habitat. The purpose of this CD is to provide project files and GIS coverages for Task 1 of the Military Interdepartmental Purchase Request to the U.S. Army Corps of Engineers. 2005 ground condition Complete Unknown -96.800230 -96.700315 42.673551 42.654601 None inlandWaters Hydrographic Survey None Missouri River Below Gavins Point Dam none The Missouri River is a dynamic system. Although the elevation data were considered accurate at the time of collection, channel, shore, and highbank areas are unstable and the elevation can be expected to change. U.S. Geological Survey Ryan F. Thompson Hydrologist mailing and physical address

111 Kansas Ave SE

Huron SD 57350 605 352-4241 x225 rcthomps@usgs.gov Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722 Data were collected using Ashtech Z-Extreme real-time kinematic GPS receivers. A local base station was established using two nearby first order benchmarks. The antenna on the base unit was a Geodetic 4 REV A, model number 701975.01. Rove units were checked over a known control point. Antenna heights were measured to the nearest millimeter. GPS data was output using Carlson Software's SurvCE. Antenna height corrections were applied as necessary. Conversion to NGVD29 vertical datum was completed so that the data could be compared to existing COE benchmarks and gaging station data. The datum conversion was accomplished using the National Geodetic Survey's VERTCON program (http://www.ngs.noaa.gov/cgi-bin/VERTCON/vert_con.prl). The datum shift of -0.189 meters was the program output for benchmark U450 (pid NM1968), one of the primaries used to establish local control. Data points have been checked and attributed. Data was collected in NAD83 UTM Zone 14 meters. 2006 An ArcGIS Shapefile was built from text output of raw data files. 2006 Attribute fields were added and populated. 2006 Shapefile was projected to UTM Zone 14, US feet. 2006 Vector Entity point 28602 Point 4 Transverse Mercator 0.999600 -99.000000 0.000000 1640416.666667 0.000000 coordinate pair 0.000064 0.000064 survey feet North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 Elevations were collected in NAVD88 and were converted to NGVD29 using VERTCON based on benchmark U450 0.1 feet Attribute values ofr07-1056_dn_post_gps Point Attribute Table ARC/INFO ® GIS Software FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. elev_ft elevation of the channel bottom in feet, National Geodetic Vertical Datum of 1929 U.S. Geological Survey elev_ft elevation of the channel bottom in feet, National Geodetic Vertical Datum of 1929 U.S. Geological Survey northing2 UTM Zone 14 Northing, in meters U.S. Geological Survey Northing2 UTM Zone 14 Northing, in meters U.S. Geological Survey easting2 UTM Zone 14 Easting, in meters U.S. Geological Survey Easting2 UTM Zone 14 Easting, in meters U.S. Geological Survey elev_m elevation of the channel bottom, in meters, National Geodetic Vertical Datum of 1988 U.S. Geological Survey elev_m elevation of the channel bottom, in meters, National Geodetic Vertical Datum of 1988 U.S. Geological Survey descr description of point U.S. Geological Survey w land surface point is under water U.S. Geological Survey s point is above water surface on sand U.S. Geological Survey lew left edge of water U.S. Geological Survey rew right edge of water U.S. Geological Survey tlb top of left bank U.S. Geological Survey trb top of right bank U.S. Geological Survey transect transect the point is associated with U.S. Geological Survey transect transect the point is associated with U.S. Geological Survey EASTINGft UTM Zone 14 Easting, in US feet U.S. Geological Survey Eastingft UTM Zone 14 Easting, in US feet U.S. Geological Survey NORTHINGft UTM Zone 14 Northing, in US feet U.S. Geological Survey Northingft UTM Zone 14 Northing, in US feet U.S. Geological Survey U.S. Geological Survey Ask USGS - Water Webserver Team mailing address

445 National Center

Reston VA 20192 USA 1-888-275-8747 (1-888-ASK_USGS) http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+ofr041189it03 Downloadable Data The South Dakota and Nebraska Water Science Centers, the Water Resources Discipline (WRD) of the U.S. Geological Survey, and the U.S. Army Corps of Engineers make no guarantee nor offer any warranty concerning the accuracy, condition, or application of the information contained in these geographic data. The burden for determining fitness for use of this data lies entirely with the user. Although these data have been used successfully on computers of WRD, no warranty, expressed or implied, is made by WRD regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty. In no event shall the WRD have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including , but not limited to, any loss of profits arising out of the delivery, installation, operation, or support by WRD. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. ARCE 0.764 http://water.usgs.gov/GIS/dsdl/dn_post_gps.zip None 20070306 U.S. Geological Survey Ask USGS - Water Webserver Team mailing address

445 National Center

Reston VA 20192 USA 1-888-275-8747 (1-888-ASK_USGS) http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+ofr07-1056_dn_post_gps.shp FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time http://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile