Survey data is referenced to Oregon North State Plane Coordinates North American Data 1983 with sounding reference below Columbia River datum in U.S. Survey Feet to above Bonneville Dam where the soundings are referred to minimum operating pool elevation.

The Dalles to McNary
   Survey title Survey date
   The Dalles Dam Upper 03/23/2017
       CL_53_DDU    191.7 to 195.1 PDF XYZ Shape
   Browns Island 03/24/2017
       CL_54_BRS    195.1 to 198.9 PDF XYZ Shape
   Celilo Falls 03/24/2017
       CL_55_CEL    198.9 to 202.6 PDF XYZ Shape
   Miller Island 04/19/2017
       CL_56_MLI    202.6 to 206.6 PDF XYZ Shape
   Biggs Junction 04/18/2017
       CL_57_BIJ    206.6 to 210.4 PDF XYZ Shape
   Maryhill Reach 04/18/2017
       CL_58_MHR    210.4 to 214.3 PDF XYZ Shape
   Preachers Eddy 04/17/2017
       CL_59_PRE    214.3 to 215.7 PDF XYZ Shape
   John Day Dam 04/24/2017
       CL_60_JDD    215.7 to 218.1 PDF XYZ Shape
   John Day River 04/25/2017
       CL_61_JDR    218.1 to 221.9 PDF XYZ Shape
   Goodnoe Reach 04/25/2017
       CL_62_GNR    221.9 to 225.7 PDF XYZ Shape
   Rock Creek Reach 04/26/2017
       CL_63_RCR    225.7 to 229.5 PDF XYZ Shape
   Philipi Canyon 05/01/2017
       CL_64_PHC    229.5 to 233.4 PDF XYZ Shape
   Sundale Reach 05/02/2017
       CL_65_SDR    233.4 to 237.3 PDF XYZ Shape
   Jones Canyon 05/02/2017
       CL_66_JOC    237.3 to 241.1 PDF XYZ Shape
   Arlington 05/02/2017
       CL_67_ARL    241.1 to 244.8 PDF XYZ Shape
   Moonay Reach 05/02/2017
       CL_68_MYR    244.8 to 248.7 PDF XYZ Shape
   Willows Reach 05/03/2017
       CL_69_WSR    248.7 to 252.6 PDF XYZ Shape
   Three Mile Canyon 05/03/2017
       CL_70_TMC    252.6 to 256.4 PDF XYZ Shape
   Alder Creek Reach 05/03/2017
       CL_71_ACR    256.4 to 260.3 PDF XYZ Shape
   Crow Butte Reach 05/04/2017
       CL_72_CBR    260.3 to 264.3 PDF XYZ Shape
   Messner Lower Range 05/16/2017
       CL_73_MLR    264.3 to 268.2 PDF XYZ Shape
   Messner Middle Range 05/17/2017
       CL_74_MMR    268.2 to 272.2 PDF XYZ Shape
   Messner Upper Range 05/17/2017
       CL_75_MUR    272.2 to 275.9 PDF XYZ Shape
   Irrigon Lower Range 05/17/2017
       CL_76_ILR    275.9 to 280.0 PDF XYZ Shape
   Irrigon Middle Range 05/18/2017
       CL_77_IMR    280.0 to 284.3 PDF XYZ Shape
   Irrigon Upper Range 05/18/2017
       CL_78_IUR    284.3 to 288.2 PDF XYZ Shape
   McNary Reach 05/18/2017
       CL_79_MNR    288.2 to 291.9 PDF XYZ Shape