1. Release of WinRiver II Version 2.03 OSW Webinar: November 25 and December 2, 2008 Mike Rehmel

2. Topics Covered WinRiver II Version 2.03 Improved Stability Improved Stability Change in Side-lobe Cutoff Change in Side-lobe Cutoff Other Fixes and Changes Other Fixes and Changes SxS Changes SxS Changes All users should upgrade All users should upgrade

3. Improved Stability Some computers were very unstable with previous versions Some computers were very unstable with previous versions Significant effort was placed on improve stability in this release Significant effort was placed on improve stability in this release 2.03 has greatly improved in all cases 2.03 has greatly improved in all cases If after upgrading to 2.03 you still have any crashes let us know! If after upgrading to 2.03 you still have any crashes let us know!

4. Change in Side-Lobe Cutoff Old side lobe was calculated as 6% of the mean beam depth for each ensemble Old side lobe was calculated as 6% of the mean beam depth for each ensemble If one beam struck something, it was possible for that beam to report a velocity past the bottom and this velocity be used for the bin velocities below the depth of the shallowest beam If one beam struck something, it was possible for that beam to report a velocity past the bottom and this velocity be used for the bin velocities below the depth of the shallowest beam

5. Change in Side-Lobe Cutoff Side lobe is now calculated from 6% of the shallowest beam Side lobe is now calculated from 6% of the shallowest beam

6. Change in Side-Lobe Cutoff New side lobe cutoff off may result in New side lobe cutoff off may result in Larger bottom Q and smaller measured Q Larger bottom Q and smaller measured Q Fewer good bins near edges Fewer good bins near edges Old Side Lobe New Side Lobe

7. Change in Side-Lobe Overall affect on total discharge Overall affect on total discharge Reviewed 70 measurements so for Reviewed 70 measurements so for Mean depth range:.65 to 13 ft Mean depth range:.65 to 13 ft Q range: 7.5 to 18100 cfs Q range: 7.5 to 18100 cfs Average change in discharge < 1% (Median + 0.3%) Average change in discharge < 1% (Median + 0.3%) 3 out of 70 measurements had > 5% change in Q and had mean difference of beam depths for individual ensembles between 17 and 32% 3 out of 70 measurements had > 5% change in Q and had mean difference of beam depths for individual ensembles between 17 and 32% Largest changes in Q likely in measurements with few bins per ensemble with uneven bottoms (depths varying on average > 15% per ensemble) Largest changes in Q likely in measurements with few bins per ensemble with uneven bottoms (depths varying on average > 15% per ensemble) Reprocessing old measurements currently not recommended. If you have measurements with significant depth variations (in individual ensembles) contact OSW Reprocessing old measurements currently not recommended. If you have measurements with significant depth variations (in individual ensembles) contact OSW Additional guidance will be provided in an upcoming memo Additional guidance will be provided in an upcoming memo

8. Other Fixes and Changes Enabled diagnostic test for StreamPro Enabled diagnostic test for StreamPro Lost ensembles labeled correctly now Lost ensembles labeled correctly now Changed locking mechanism (no longer file permission) Changed locking mechanism (no longer file permission) Fixed total Q not including ending edge in composite tabular during data collection Fixed total Q not including ending edge in composite tabular during data collection Fixed lock-up in wizard with certain drafts Fixed lock-up in wizard with certain drafts Fixed counting Pass-Fail in RGTest Fixed counting Pass-Fail in RGTest Changed default filename prefix to station number Changed default filename prefix to station number

9. Other Fixes and Changes Fixed Q Measurement Summary Fixed Q Measurement Summary Sdev, incorrect when in English units Sdev, incorrect when in English units %Bad Ens label %Bad Ens label Width label Width label WT Pings label WT Pings label Remarks not wrapping correctly Remarks not wrapping correctly Improved ability to collect data if crash occurs Improved ability to collect data if crash occurs Fixed problem with raw data files being recorded in multiple directories Fixed problem with raw data files being recorded in multiple directories Fixed multiple ASCII-out issues Fixed multiple ASCII-out issues

10. SxS Mode Changes Can now set ADCP draft for each section Can now set ADCP draft for each section Can edit section location in playback Can edit section location in playback Added new velocity magnitude graph for evaluating extrapolation Added new velocity magnitude graph for evaluating extrapolation Can mark section not used in playback Can mark section not used in playback Can use screening thresholds Can use screening thresholds Can set extrapolation per section (only ice, bidirectional, normal, wind) Can set extrapolation per section (only ice, bidirectional, normal, wind) Ability to reload.mmt file and collect data Ability to reload.mmt file and collect data Has not been tested by OSW Has not been tested by OSW

11. SummarySummary Much improved Stability Much improved Stability New side lobe cutoff may result in changes in discharge New side lobe cutoff may result in changes in discharge Should be small < %1 for most measurements Should be small < %1 for most measurements Shallow cross sections with uneven depths (avg > 15% variation in beam depths with an ensemble) may have larger changes in Q. Shallow cross sections with uneven depths (avg > 15% variation in beam depths with an ensemble) may have larger changes in Q. Other minor issues fixed Other minor issues fixed SxS has been modified to include many OSW recommendations, but has not been fully tested SxS has been modified to include many OSW recommendations, but has not been fully tested All users should upgrade All users should upgrade

12. Questions?Questions? WinRiver II version 2.03 available at: http://hydroacoustics.usgs.gov http://hydroacoustics.usgs.gov http://rdinstruments.com http://rdinstruments.com