Untitled Document

Current Policy Memos

Memo No. Subject pdf html
2017.13 Identification, Correction, and Revision of Discharges Measured with SxS Pro pdf --
2017.12 Methods for Quantifying Streamflow Measurement Uncertainty for Measurements Stored in the National Water Information System pdf --
2017.08 SonTek 1500 kHz SL 3Gs Data Quality Problems pdf --
2017.04 Policy for Minimum Required Software and Firmware for Collection and Process of Streamflow Measurements with Hydroacoustic Instruments pdf --
2017.03 Policy and guidance for shifting and check measurement practices when using the index-velocity method pdf --
2017.02 Mandatory use of QRev for processing moving-boat streamflow measurements made with acoustic Doppler current profilers and stored in the National Water Information System pdf --
2017.01 Use of the FlowTracker2 ADV for Streamflow Measurements pdf --
2016.03 Release and use of QRev for processing moving-boat streamflow measurements made with acoustic Doppler current profilers pdf --
2016.02 Quality Assurance Practices for the Mitigation of Systematic Discharge Measurement Errors pdf --
2015.05 Minimum requirements for documenting stage-area and index-velocity ratings for computation of streamflow records using the index velocity method pdf --
2014.09 Discontinuation of Use of Environmental Measurements in SWAMI pdf html
2014.08 Policy for the Timely Correction of Time-series Data Displayed on the NWISWeb -- Includes policy on storing 1-min index velocity data in NWIS pdf --
2014.05 Publication of Version 2, December 2013 of the Techniques and Methods Report Book 3-Section A22 "Measuring Discharge with Acoustic Doppler Current Profilers from a Moving Boat" and associated policy and guidance for moving boat discharge measurements. pdf html
2014.04 Quality Assurance Checks of Acoustic Doppler Current Profilers pdf html
2014.02 Policy on Required Minimum Screening Distance for the RiverSurveyor M9 pdf
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2013.04 Validation of new ADCPs and their use in Water Programs
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2012.04
Publication of the Techniques and Methods Report Book 3-Section A23 Computing Discharge Using the Index Velocity Method and important policy and guidance for index velocity stations
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2012.01 Processing ADCP Discharge Measurements On-site and Performing ADCP Check Measurements pdf html
2011.08 Exposure Time for ADCP Moving-boat Discharge Measurements Made During Steady Flow Conditions pdf --
2011.04 Policy on the Use of Hydroacoustic Software and Firmware pdf html
2010.07 Independent Water Temperature Measurement for Hydroacoustic Measurements pdf html
2010.06 FlowTracker Diagnostic Test Policy pdf html
2010.02 Flow Meter Quality-Assurance Check - SonTek/YSI FlowTracker Acoustic Doppler Velocimeter pdf html
2009.05 Publication of the Techniques and Methods Report Book 3-Section A22, "Measuring Discharge with Acoustic Doppler Current Profilers from a Moving Boat" and associated policy and guidance for moving boat discharge measurements pdf html
2009.04 Application of FlowTracker firmware and software mounting correction factor for potential bias pdf html
2009.02 Release of WinRiver II Software (version 2.04) for Computing Streamflow from Acoustic Doppler Current Profiler Data pdf --
2008.03 Hydroacoustics Work Group - Charter, Membership, and Activities pdf html
2008.02 Upgrade for Rio Grande/Workhorse Firmware to Address Potential Bias in Discharges Measured Using Water Mode 12 pdf html
2008.01 Release of WinRiver II Software (version 2.00) for Computing Streamflow from Acoustic Profiler Data pdf html
2007.01 SonTek/YSI FlowTracker firmware version 3.10 and software version 2.11 upgrades and additional policy on the use of FlowTrackers for discharge measurements pdf html
2006.04 Guidance on the use of the Loop Method** and release of "Application of the Loop Method for Correcting Acoustic Doppler Current Profiler Discharge Measurements Biased by Sediment Transport." [Revised Appendix for SIR 2006-5079] pdf html
2006.02 Quality-Assurance Plan for Discharge Measurements Using Acoustic Doppler Current Profilers pdf html
2005.08 Policy and Guidance for Archiving Electronic Discharge Measurement Data pdf html
2005.05 Guidance on the use of RD Instruments StreamPro Acoustic Doppler Profiler pdf html
2005.04 Release of WinRiver Software version 10.06 for Computing Streamflow from Acoustic Profiler Data pdf html
2004.04 Policy on the use of the FlowTracker for discharge measurements pdf --
2003.04 Release of WinRiver Software Version 10.05 for Computing Streamflow from Acoustic Profiler Data pdf html
2003.01 Discharges computed using Sontek RiverSurveyor Acoustic Doppler Current Profiler pdf html
2002.03 Release of WinRiver Software (version 10.03) for Computing Streamflow from Acoustic Profiler Data pdf html
2002.02 Policy and Technical Guidance on Discharge Measurements using Acoustic Doppler Current Profilers pdf html
2002.01 Configuration of Acoustic Profilers (RD Instruments) for Measurement of Streamflow pdf html
-- National Coordination and Support for Hydroacoustic Activities pdf --
2000.03 Software for Computing Streamflow from Acoustic Profiler Data -- html
1997.02 National Coordination and Support for ADCP Activities -- html
1996.01 Distribution of OFR 95-701, Quality Assurance Plan for Discharge Measurements Using Broadband Acoustic Doppler Current Profilers -- html