U.S. Geological Survey 2007 vector digital data Reston, VA U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?ofr07-1056_all_trans.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 dataset represents the transects used for hydrographic surveys of Emergent Sandbar Habitat at two sites near river miles 761.4 and 769.8 downstream of Gavins Point Dam on the Missouri River. Original transects were laid out from highbank to highbank, approximately perpendicular to the direction of flow, spaced approximately 500 feet apart, and extended approximately two miles upstream from the upstream ends of the construction zones and approximately two miles downstream from the downstream ends of the construction zones. For post-construction surveys, additional transects were added between the original transects near the constructed sandbars to provide additional detail. 2004 unknown 2006 unknown ground condition Complete None planned -96.917817 -96.693278 42.743544 42.650231 None Hydrographic Surveys inlandWaters None Missouri River South Dakota Nebraska none none 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 The approximate centerline of the Missouri River was digitized on-screen using 2003 aerial photography. Using Hypack software, transects were laid out approximately perpendicular to flow at spacings of approximately 500 feet. Transects extended from highbank to highbank approximately two miles upstream of the upstream end of each construction zone, and downstream approximately two miles from the downstream end of each construction zone. The transects were then used by Hypack for data collection. For post-construction data collection, additional transects were laid out between existing transects in the vicinities of the constructed sandbars. This dataset includes the original transects used in the preconstruction survey as well as the additional transects specified for the postconstruction survey Data collection transects were laid out using Hypack Hydrographic software and georeferenced aerial photography for the study area. The approximate stream centerline was digitized, and Hypack was used to generate a series of transects spaced 500 feet apart, oriented generally perpendicular to the stream centerline. For postconstruction surveys, additional transects were added between existing transects in selected areas. Unknown Vector String 138 Complete chain 118 Node, planar graph 236 Point 4 Label point 118 Transverse Mercator 0.999600 -99.000000 0.000000 1640416.666667 0.000000 coordinate pair 0.000128 0.000128 survey feet North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 ofr07-1056_all_trans Arc Attribute Table ARC/INFO (R) GIS Software LENGTH Length of feature in internal units. ESRI Positive real numbers that are automatically generated. FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. FNODE_ from node ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. TNODE_ to node ESRI Coordinates defining the features. LPOLY_ left polygon ESRI Coordinates defining the features. RPOLY_ right polygon ESRI Coordinates defining the features. trans_no transect number USGS Transect number Number assigned to each transect U.S. Geological Survey tran_id transect identifier USGS Transect identifier unique identification number for each transect 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 0.012 http://water.usgs.gov/GIS/dsdl/all_trans.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_all_trans.shp FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998