USACE Walla Walla District QA/QC Evaluation of 2015 TDG Data. Presented by Ben Holman, Eric Porter & Jeff Wiles USGS Washington Water Science Center

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1 USACE Walla Walla District QA/QC Evaluation of 2015 TDG Data Presented by Ben Holman, Eric Porter & Jeff Wiles USGS Washington Water Science Center December 3, 2015

2 Presentation Outline Project location Instrumentation Data completeness Station locations and percent saturation graphs QA/QC Sensor comparisons to primary standards (pre- and postdeployment) Sensor comparisons to secondary standards Summary

3

4 15 Fixed Monitoring Stations (FMS) 6 year-round sites, 9 seasonal sites 5 forebay sites, 6 tailwater sites, 4 riverine sites all sites visited every three weeks during spill season 6 tailwater sites visited every four weeks outside spill season

5 Field equipment 52 sondes: Hydrolab Mini 4a, Mini 5, and Hydrotech 12 new Hach TDG membranes 2 Novalynx 230-M202 handheld digital barometers 4 Hydrolab Surveyor-4 hand-held data displays

6 FMS Equipment 14 Sutron SatLink2 High Data Rate (HDR) Data- Collection Platforms (DCPs) 1 Sutron 8210 HDR DCP with external phone modem All Sutron SDI-12 digital barometers

7 Lab equipment Heise calibrated digital pressure gage Ashcroft calibrated digital pressure gage Two Oakton digital thermometers ParoScientific digital barometric pressure Digiquartz Laboratory Standard, Model 745.

8 Data Completeness April-August 2015 (spill season) Entire reporting period Barometric Pressure (BP) record (% complete) Total Dissolved Gas (TDG) record (% complete) Water Temperature (WT) record (% complete) year-round gages: Oct Sept seasonal gages: mid-mar. - mid-sept. 2015

9 Missing/Anomalous BP and TDG Data In Water Year 2015, 2369 hours or 2.77% of data were missing or anomalous Number of Hours Missing/Anomalous Percentage of Total Reason Missing or Anomalous low readings (bio-fouling) bad membrane bad sonde cable failure DCP failure missing inspection spike

10 Missing/Anomalous BP and TDG Data, cont d Site Number of Hours Missing/Anomalous Percentage of Total LGSW PEKI LGW PAQW ANQW LMNW MCPW DWQI IDSW LGSA LEWI LGNW MCNA IHRA LMNA

11 DWQI - NF Clearwater River nr Ahsahka, ID

12 Operating limit, 110% saturation

13 PEKI - Clearwater River nr Peck, ID

14 Operating limit, 110% saturation

15 LEWI Clearwater River nr Lewiston, ID

16 Operating limit, 110% saturation

17 ANQW Snake River nr Anatone, WA

18 Operating limit, 115% saturation

19 LGW & LGNW Snake River at Lower Granite Dam

20 Operating limit, 115% saturation

21 Operating limit, 120% saturation

22 LGSA & LGSW Snake River at Little Goose Dam

23 Operating limit, 115% saturation

24 Operating limit, 120% saturation

25 LMNA & LMNW Snake River at Lower Monumental Dam

26 Operating limit, 115% saturation

27 Operating limit, 120% saturation

28 IHRA & IDSW Snake River at Ice Harbor Dam

29 Operating limit, 115% saturation

30 Operating limit, 120% saturation

31 PAQW Columbia River at Pasco, WA

32 Operating limit, 115% saturation

33 MCNA & MCPW Columbia River at McNary Dam McNary

34 Operating limit, 115% saturation

35 Operating limit, 120% saturation

36 Explanation of a Boxplot

37 TDG Sensor minus Primary Standard

38 TDG Sensor minus Primary Standard +100 mmhg +300 mmhg

39 Temperature Sensor minus Primary Standard

40 In-Place Barometer minus Secondary Standard

41 Temperature Sensor minus Secondary Standard

42 TDG Sensor minus Secondary Standard

43 Summary Data collected at 15 sites (6 year-round and 9 seasonal) Data collected are TDG, water-temperature, barometric pressure In Water Year 2015 (Oct Sept. 2015), only 3.02% of all data were missing or anomalous

44 Summary, cont d Median differences between field sensors and Primary Standards: TDG sensors at barometric pressure Pre-deployment mm Hg Post-deployment 0.06 mm Hg Water-temperature sensors Pre-deployment o C Post-deployment o C

45 Summary, cont d Median differences between field sensors and Secondary Standards: TDG sensors -0.1% saturation Water-temperature sensors -0.0 o C Barometers 0.0 mm Hg

46 QUESTIONS?

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