U.S. Geological Survey: Assessing Flow Measurement Instruments Janice M. Fulford Chief, HIF Testing Section 11/24/2018 U.S. Geological Survey, Hydrologic Instrumentation Facility
Instrumentation Assessments Office of Surface Water – policy on flow measurement instruments Water Science Centers – ad hoc & projects Internal Specialty Workgroups – such as HAWG Instrumentation Committee - ICOM Hydrologic Instrumentation Facility – Testing Section
Instrumentation Standards Techniques of Water Resources Investigations Water Supply Paper by Rantz and others Official Memoranda, Technical Offices Official Reports – SIR, WRIR, and OFR
Testing Standards Dependent on Needs & Investigator Simple comparisons with existing instrumentation in field Simple “office” tests Laboratory tests with traceable standards/references Rigorous field experiments Emerging demand for uncertainty analysis of measurements
Instrumentation Information Official Memoranda (Office of Surface Water) Official Publications (TWRI, WSP, SIR) List servers (HAWG) Web Sites – internal only & public Internal Conferences & Meetings WRD Instrumentation News (internal) Conference presentations & Journals
Hydrologic Instrumentation Facility HIF water-level measurement devices water-velocity meters other instrumentation Laboratory facilities & field sites Located at NASA Stennis Space Center, Mississippi
Environmental Chambers Temperature and humidity controlled Walk-in Espec
Pressure Testing Standards NIST traceable pressure standards
Groundwater well standpipe (stainless) Stilling well stand pipe 5.5” dia. Water level and water quality Groundwater well standpipe (stainless) 12 ft 100.5 ft Stilling well stand pipe 12” dia. Sampling ports – 10ft intervals
Hydraulic Laboratory Velocity meter calibrations Tilting flumes (2) Jet tank Tow tank Pipe stand Scale outdoor floodplain Velocity meter calibrations Scale Hydraulic modeling
Field Test Sites
HIF Testing Informal Article Format Overview: included summary table of test results Description of sensor: includes spec table Description of test procedures Test results: tables & charts Testing Tibits: summary, observations and qualitative assessment.