Joel Unema David Topping 2018 comma separated values (csv) and tab-delimited text (txt) Flagstaff, AZ U.S. Geological Survey https://doi.org/10.5066/P9IU6NAI These data were compiled to accompany flow modeling work on Kanab Creek near the mouth (USGS gage 09403850). The data include topographic data collected by a remote sensing detection light detection and ranging (LIDAR) system and surveying total station in June 2017, high water marks from six floods from 2011 to 2013, and control points and gage structures. Topographic data include ground topography collected by LIDAR and channel bathymetry collected by total station survey of a 600 meter reach of Kanab Creek, ending at the confluence with the Colorado River in Grand Canyon, Arizona. High water mark data include sets from six floods collected by USGS personnel using total station surveys. The purpose of these data are for flow modeling efforts to better define the stage discharge relationship at the Kanab Creek abv Mouth (09403850) gaging station. They can also be used to better understand historic flood discharges and provide a baseline data set for future geomorphic change detection. These data provide topographic data for Kanab Creek near the confluence with the Colorado River. These data were collected in June 2017 for the purpose of flow modeling and geomorphic analysis at USGS gaging station 09403850. Control point data are included for future surveys and data collection. High Water Mark data are included for flow modeling purposes and the spatial precision of these data are much coarser than the combined LIDAR and total station data collected in 2017. 2017 Topographic data represents only the topography at a point in time when surveyed in June 2017 and changing geomorphic processes mean this topography is not valid for other time periods. Similarly, the high water mark data collected by other USGS hydrographers represents high water marks as found at the time of survey, and these temporary marks and locations cannot be used for other time periods. The data are specific to the uses identified above, and any other use of these data would be inappropriate. See 'Distribution liability' statements for more information. 2011 2012 2013 2017 ground condition Complete None planned -114.02379 -111.476798 36.965854 35.740126 ISO 19115 Topic Categories elevation geoscientific information imagery base maps earth cover inland waters location planning cadastre USGS Thesaurus baseline data channel bathymetry change detection control points flow modeling gage structures geomorphic change high water marks historic flood discharges indirect discharge measurement LIDAR light detection and ranging topographic data topography total station survey data USGS Metadata Identifier USGS:5b06fb93e4b0ac450c98b399 Geographic Names Information System (GNIS) Kanab Creek Colorado River Grand Canyon Coconino County Arizona Southwestern United States United States none none David Topping U.S. Geological Survey Research Hydrologist mailing and physical

Mail Stop 9395, 2255 North Gemini Drive

Flagstaff AZ 86001 United States 928-556-7396 dtopping@usgs.gov Data collection support was provided by Stephanie Coffman, PG, Senior Fluvial Geomorphologist. Funding to support this work was provided by the Bureau of Reclamation, Glen Canyon Dam Adaptive Management Program and the USGS Arizona Water Science Center Grand Canyon Uranium project in conjunction with the USGS Toxics group. No formal attribute accuracy tests were conducted No formal logical accuracy tests were conducted Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. No formal positional accuracy tests were conducted No formal positional accuracy tests were conducted Development of the Control Points and Structures, Kanab Control Data: These data were produced by traditional surveying methods using manned total station and manned reflector survey rod. The starting points for these surveys were existing control points in the Grand Canyon and Monitoring Research Center Grand Canyon corridor control network. Coordinates to new points were assigned by total station survey and traverse work performed in June 2017. Survey data were processed in Trimble Geomatics Office. 2018 Development of the High Water Marks Data: : These data were collected by USGS hydrographers from 2011 to 2013 using traditional total station survey. These surveys were performed in local coordinate systems and were rotated and projected into NAD 1983 HARN StatePlane Arizona Central FIPS 0202 to match topographic data collected in 2017. The precision of these survey data varies, but horizontal positions are within 1-2 meters and elevations are within 5-10cm. These survey data are intended to be used for flow modeling purposes. 2018 Development of the Kanab Combined 5cm Data: These data were a combination of LIDAR point cloud data and total station survey data. The LIDAR data were collected with a Riegl scanner (http://www.rieglusa.com/index.html) and processed using CloudCompare (https://www.danielgm.net/cc/). Scans were merged using 13, 10cm reflector targets located with total station survey. LIDAR points were generated from TIN surface at a resolution of 5cm and were merged with total station data by interpolation from 0.5m contours and spot elevations using Cloud Compare. Total station data were collected using traditional survey methods using manned total station and manned reflector rod. 2018 Data Quality Assessment and Control (QAQC): The quality assessment and control of these data was performed as follows. LIDAR point cloud data were assessed using a scan-to-scan uncertainty, which was less than 0.01m. Total station control and topographic data were assessed using repetitious control point shots and comparison in Trimble Geomatics Office. High Water Mark survey data quality was assessed by comparison in Global Mapper, and large uncertainties are assigned to these data because they were collected by various field parties over several years. 2018 Finalize Data for Dissemination: Data sent to the Southwest Biological Science Center Data Steward for dissemination and preservation per USGS Data Management Policies SM 502.6, SM 502.7, SM 502.8 and SM 502.9 (1 October 2016). 2018 Control Points and Structures These data represent the geographic location of control points used in collecting survey data. They record the horizontal position, elevation, and description of control points and gaging structures present at the Kanab Creek abv Mouth gage (09403850). The location and elevation of these points are recorded so future toporaphic surveys and other data can be collected in the same coordinate system as the data published herein. The positions of these control points and gaging structures were measured by total station survey in June 2017. Positions and elevations were established by total station traverse from established control points along the Colorado River corridor. Producer defined X Easting value of the point in meters, NAD 1983 HARN StatePlane Arizona Central FIPS 0202 Producer defined 149101.766 149289.758 meters Y Northing value of the point in meters, NAD 1983 HARN StatePlane Arizona Central FIPS 0202 Producer defined 598206.059 598613.524 meters ELEVATION These elevations were surveyed in June 2017. Elevation of the point in meters, NAD83. Producer defined 550.243 563.485 meters Name Name of the control point Producer defined a textual or numeric identifier that describes a structural feature at the data collection point, to assist in identifying its location Description physical description of the control point or gaging station structure Producer defined a textual description of control points or structural features at the data collection point, to assist in describing its location, surveyed in June 2017. High Water Marks These data represent high water marks from floods occurring on July 9, 2011, August 20, 2011, July 31, 2012, August 26, 2013, and August 31, 2013. The high water mark data were collected by USGS hydrographers using total station survey equipment. These data were rotated and projected into the same coordinate system as the topography layer included in this data release. The high water mark data are used for flow modeling and improving stage discharge relationship. Producer defined HWM Set Date of the flood that deposited the high water marks that were later surveyed by USGS hydrographers. Producer defined 7/9/2011, 8/20/2011(A), 8/20/2011(B), 7/31/2012, 8/26/2013, 8/31/2013; Letters A and B refer to the August 20, 2011 flood, for which two sets of high water marks at different discharge values were deposited on the same day. X Easting value of the point in meters, NAD 1983 HARN StatePlane Arizona Central FIPS 0202. These horizontal positions are approximate (+/- 2m) Producer defined 149117.56 149363.594 meters Y Northing value of the point in meters, NAD 1983 HARN StatePlane Arizona Central FIPS 0202. These horizontal positions are approximate (+/- 2m) Producer defined 598392.227 598613.524 meters ELEVATION Elevation of the point in meters, NAD83. Producer defined 554.984, 558.99 meters Topography and Bathymetry 5cm - 1-6 These data represent the topography and bathymetry values of the 600 meter reach of Kanab Creek ending in the confluence with the Colorado River as of June 2017. The ground topography was collected by Riegl LIDAR (http://www.rieglusa.com/index.html) and rectified to NAD 1983 HARN StatePlane Arizona Central FIPS 0202 coordinates using a total station survey. Positions and elevations were established by total station traverse from established control points along the Colorado River corridor. Total station surveys were also used to collect the bathymetry of Kanab creek in this reach. These data were used as a base topographic layer for flow modeling for rating development at Kanab Creek above Mouth (09403850). 5cm references a 5 centimeter resolution for the points in the lidar cloud dataset. Producer defined x Easting value of the point in meters, NAD 1983 HARN StatePlane Arizona Central FIPS 0202 Producer defined 149051.2031 149433.875 meters y Northing value of the point in meters, NAD 1983 HARN StatePlane Arizona Central FIPS 0202 Producer defined 598345.8125 598779.0625 meters z Elevation of the point in meters, NAD83 Producer defined 494.6159973 675.8280029 meters r Red Producer defined 0 255 3-band point color representation value g Green Producer defined 0 255 3-band point color representation value b Blue Producer defined 0 255 3-band point color representation value U.S. Geological Survey - ScienceBase U.S. Geological Survey mailing and physical

Denver Federal Center, Building 810, Mail Stop 302

Denver CO 80225 United States 1-888-275-8747 sciencebase@usgs.gov The authors of these data request that data users contact them regarding intended use and to assist with understanding limitations and interpretation. Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. This zip file contains data available in comma separated values (csv) and tab-delimited text (txt) formats. The user must have software capable of uncompressing the zip file and displaying the data. 20200827 Joel A Unema U.S. Geological Survey Hydrologic Technician mailing and physical

2255 North Gemini Drive

Flagstaff AZ 86001 US 928-556-7363 junema@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998