1. Water Survey Of Canada Presentation to WMO Meeting on The Assessment of the Performance of Measurement Instrumentation Geneva, Switzerland April 25, 2007 Patrick J. McCurry, P.Eng National Manager, Hydrometric Operations Ottawa, Canada

2. Overview Focus of efforts Focus of efforts Issues being faced Issues being faced What has WSC Done What has WSC Done Issues still to be addressed Issues still to be addressed

3. New Technologies Focus over past 10 years: Focus over past 10 years: Acoustic Doppler Acoustic Doppler Profilers: ADCPs – moving boat, section-by-section, in-situ Profilers: ADCPs – moving boat, section-by-section, in-situ Velocimeters: ADVMs – in-situ Velocimeters: ADVMs – in-situ AVM AVM Point velocity: Flowtrackers, section-by-section Point velocity: Flowtrackers, section-by-section Transectional: AFFRA Transectional: AFFRA Non-contact/non-intrusive Non-contact/non-intrusive Stage: radar & laser Stage: radar & laser Surface velocity: radar Surface velocity: radar

4. Issues Related to New Technology Acceptance & Introduction Suitability for program Suitability for program Stable or still evolving? Stable or still evolving? Efficiencies, cost effectiveness Efficiencies, cost effectiveness Impacts on: Impacts on: Standards, procedures, methodologies Standards, procedures, methodologies Occupational health and safety Occupational health and safety Required skill, knowledge, training Required skill, knowledge, training Reduced number of experts Reduced number of experts Retirements, staffing cuts, limited new hiring Retirements, staffing cuts, limited new hiring

5. What has WSC Done? Leveraged with other Hydrologic Services: Leveraged with other Hydrologic Services: Federal-provincial-territorial agreements Federal-provincial-territorial agreements Technology sharing/evaluation is limited Technology sharing/evaluation is limited With USGS With USGS Memorandum of Cooperation Memorandum of Cooperation Sharing of knowledge, expertise, resources for initiatives of mutual interest Sharing of knowledge, expertise, resources for initiatives of mutual interest Technology development, evaluation, acceptance, training Technology development, evaluation, acceptance, training With other governments (domestic & international) With other governments (domestic & international) Nothing formal but increasing number of informal linkages and exchanges of experiences, issues, solutions via e-mail Nothing formal but increasing number of informal linkages and exchanges of experiences, issues, solutions via e-mail Universities and other Research Institutes Universities and other Research Institutes Scattered work with scientists Scattered work with scientists

6. What has WSC Done? Worked closely with USGS on the hydroacoustic and non-contact technology development, enhancement, evaluation, acceptance, quality assurance, and training, including: Worked closely with USGS on the hydroacoustic and non-contact technology development, enhancement, evaluation, acceptance, quality assurance, and training, including: Testing commercially available hydroacoustic, radar and laser technologies Testing commercially available hydroacoustic, radar and laser technologies Working with selected manufacturers & research scientists to enhance technology for market readiness, and to develop next generation products Working with selected manufacturers & research scientists to enhance technology for market readiness, and to develop next generation products Investigation of flow disturbance around transducer heads Investigation of flow disturbance around transducer heads How to deal with moving bed situations for hydroacoustics How to deal with moving bed situations for hydroacoustics Application of, and alternatives to, GPS for hydroacoustics Application of, and alternatives to, GPS for hydroacoustics Measurement platforms – tethered and remote control boats Measurement platforms – tethered and remote control boats

7. What has WSC Done? Conducted comparison testing of hydroacoustics to Price AA meters: Conducted comparison testing of hydroacoustics to Price AA meters: TRDI ADCP & StreamPro, Sontek ADP & Flowtracker TRDI ADCP & StreamPro, Sontek ADP & Flowtracker Developed and followed test procedures for acceptance of upgrades to system firmware and software Developed and followed test procedures for acceptance of upgrades to system firmware and software Written operational specifications for (moving boat) acoustic Doppler technology Written operational specifications for (moving boat) acoustic Doppler technology Procurement for operational program based on units meeting those specs (Qualified Products) Procurement for operational program based on units meeting those specs (Qualified Products)

8. What has WSC Done? Implemented a policy on use of acoustic Doppler data in rating curve development as applied to final data production Implemented a policy on use of acoustic Doppler data in rating curve development as applied to final data production ADCP procedural manuals completed & issued ADCP procedural manuals completed & issued Field Procedures & Data Review and Approval Field Procedures & Data Review and Approval ADCP accreditation process developed, approved and implemented ADCP accreditation process developed, approved and implemented

9. ADCP Procedures & Accreditation

10. Issues to be Addressed Data integrity Data integrity Are data based on measurements with hydroacoustic and non-contact instruments homogeneous with historical data? Are data based on measurements with hydroacoustic and non-contact instruments homogeneous with historical data? How to conduct an investigation into this? How to conduct an investigation into this? Data validity Data validity Is it valid to compare the output from hydroacoustic instrumentation with rotating cup instrumentation? Is it valid to compare the output from hydroacoustic instrumentation with rotating cup instrumentation? Flow disturbance around transducer heads Flow disturbance around transducer heads From transducer casing itself From transducer casing itself Boat hull Boat hull Blanking distance below transducer head Blanking distance below transducer head Number of transects Number of transects Moving beds Moving beds Swaying of floating platforms for section-by-section measurements Swaying of floating platforms for section-by-section measurements

11. Thank You !