TOTAL DISSOLVED GAS REPORT FOR DOWNSTREAM OF HUNGRY HORSE starting at 2200 18 Apr 2026 WA TM BARO TD GAS TDG TOT FLOW SPILL DATE TIME DEG F PRES PRES % KCFS KCFS 0418 2200 + 683.0 + + 8.2 0.0 0418 2300 + 683.0 + + 8.1 0.0 0419 0000 + 683.0 + + 8.1 0.0 0419 0100 + 684.0 + + 8.0 0.0 0419 0200 + 684.0 + + 8.2 0.0 0419 0300 + 684.0 + + 8.3 0.0 0419 0400 + 684.0 + + 8.3 0.0 0419 0500 + 684.0 + + 8.2 0.0 0419 0600 + 684.0 + + 8.3 0.0 0419 0700 + 684.0 + + 8.1 0.0 0419 0800 + 684.0 + + 8.3 0.0 0419 0900 + 684.0 + + 8.1 0.0 0419 1000 + 683.0 + + 8.3 0.0 0419 1100 + 683.0 + + 8.3 0.0 0419 1200 + 682.0 + + 8.2 0.0 0419 1300 + 681.0 + + 8.4 0.0 0419 1400 + 681.0 + + 8.2 0.0 0419 1500 + 680.0 + + 8.3 0.0 0419 1600 + 680.0 + + 8.2 0.0 0419 1700 + 679.0 + + 8.4 0.0 0419 1800 + 679.0 + + 8.4 0.0 0419 1900 + 679.0 + + 8.4 0.0 0419 2000 + 679.0 + + 8.2 0.0 0419 2100 + 679.0 + + 8.2 0.0 0419 2200 + 680.0 + + 8.2 0.0 TOTAL DISSOLVED GAS REPORT FOR KOOTENAI R. BL LIBBY DAM starting at 2200 18 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0418 2200 39.9 706.5 709.0 100.4 11.0 19.5 0.0 0418 2300 39.9 706.7 709.0 100.3 11.0 19.5 0.0 0419 0000 40.0 707.1 710.0 100.4 11.0 19.5 0.0 0419 0100 40.0 707.5 710.0 100.4 11.0 19.5 0.0 0419 0200 40.0 707.8 710.0 100.3 11.1 19.5 0.0 0419 0300 40.0 707.7 710.0 100.3 11.1 19.5 0.0 0419 0400 39.9 707.8 709.0 100.2 11.1 19.5 0.0 0419 0500 39.9 707.8 710.0 100.3 11.0 19.5 0.0 0419 0600 39.8 707.9 709.0 100.2 11.1 19.5 0.0 0419 0700 39.8 708.0 709.0 100.1 11.1 19.5 0.0 0419 0800 39.9 707.8 710.0 100.3 11.1 19.5 0.0 0419 0900 39.9 707.3 711.0 100.5 11.0 19.5 0.0 0419 1000 39.9 706.7 712.0 100.8 11.0 19.5 0.0 0419 1100 40.0 706.0 712.0 100.9 11.0 19.5 0.0 0419 1200 40.0 705.1 713.0 101.1 10.9 19.5 0.0 0419 1300 40.2 704.2 714.0 101.4 10.9 19.5 0.0 0419 1400 40.4 703.4 715.0 101.6 10.9 19.5 0.0 0419 1500 40.5 702.7 716.0 101.9 10.8 19.5 0.0 0419 1600 40.6 702.0 717.0 102.1 10.8 19.5 0.0 0419 1700 40.7 701.4 717.0 102.2 10.8 19.5 0.0 0419 1800 40.6 701.3 716.0 102.1 10.8 19.5 0.0 0419 1900 40.5 701.2 715.0 102.0 10.8 19.5 0.0 0419 2000 40.5 701.7 714.0 101.8 10.8 19.5 0.0 0419 2100 40.5 702.2 714.0 101.7 10.8 19.5 0.0 0419 2200 40.5 702.5 714.0 101.6 10.8 19.5 0.0 TOTAL DISSOLVED GAS REPORT FOR BOUNDARY starting at 2200 18 Apr 2026 WA TM BARO TD GAS TDG TOT FLOW DATE TIME DEG F PRES PRES % KCFS 0418 2200 45.6 726.7 771.0 106.1 114.0 0418 2300 45.4 727.1 770.0 105.9 115.0 0419 0000 45.3 727.5 768.0 105.6 114.0 0419 0100 45.2 727.7 768.0 105.5 115.0 0419 0200 45.2 728.0 767.0 105.4 116.0 0419 0300 45.1 727.9 766.0 105.2 116.0 0419 0400 45.0 727.9 766.0 105.2 116.0 0419 0500 45.0 727.9 766.0 105.2 116.0 0419 0600 45.0 728.0 766.0 105.2 115.0 0419 0700 45.0 728.1 766.0 105.2 113.0 0419 0800 44.7 728.2 766.0 105.2 103.0 0419 0900 44.7 727.9 768.0 105.5 101.0 0419 1000 44.9 727.3 770.0 105.9 101.0 0419 1100 45.0 726.6 772.0 106.2 101.0 0419 1200 45.2 725.8 773.0 106.5 102.0 0419 1300 45.2 724.9 775.0 106.9 101.0 0419 1400 45.3 724.0 776.0 107.2 101.0 0419 1500 45.4 723.6 778.0 107.5 102.0 0419 1600 45.5 723.0 778.0 107.6 100.0 0419 1700 45.6 722.4 779.0 107.8 103.0 0419 1800 45.7 722.0 779.0 107.9 109.0 0419 1900 45.7 721.8 778.0 107.8 112.0 0419 2000 45.6 721.7 777.0 107.7 111.0 0419 2100 45.6 722.3 776.0 107.4 111.0 0419 2200 + 722.8 + + + TOTAL DISSOLVED GAS REPORT FOR GRAND COULEE FOREBAY starting at 2200 18 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0418 2200 45.3 727.0 775.0 106.6 + 97.8 0.0 0418 2300 45.3 727.0 774.0 106.5 + 112.7 0.0 0419 0000 45.1 727.0 773.0 106.3 + 106.9 0.0 0419 0100 45.1 728.0 771.0 105.9 + 127.4 0.0 0419 0200 45.0 727.0 771.0 106.1 + 128.3 0.0 0419 0300 45.1 727.0 771.0 106.1 + 127.4 0.0 0419 0400 46.0 727.0 773.0 106.3 + 123.2 0.0 0419 0500 45.1 727.0 771.0 106.1 + 127.5 0.0 0419 0600 45.5 727.0 773.0 106.3 + 136.5 0.0 0419 0700 46.0 727.0 774.0 106.5 + 155.8 0.0 0419 0800 44.8 728.0 771.0 105.9 + 131.3 0.0 0419 0900 45.5 727.0 772.0 106.2 + 125.0 0.0 0419 1000 46.8 727.0 780.0 107.3 + 123.2 0.0 0419 1100 46.8 727.0 782.0 107.6 + 139.5 0.0 0419 1200 46.9 726.0 784.0 108.0 + 129.6 0.0 0419 1300 45.7 726.0 779.0 107.3 + 124.1 0.0 0419 1400 46.0 725.0 780.0 107.6 + 118.9 0.0 0419 1500 45.7 725.0 779.0 107.4 + 119.7 0.0 0419 1600 45.1 724.0 775.0 107.0 + 126.0 0.0 0419 1700 45.1 723.0 773.0 106.9 + 140.3 0.0 0419 1800 46.0 723.0 778.0 107.6 + 138.6 0.0 0419 1900 45.5 723.0 775.0 107.2 + 174.3 0.0 0419 2000 45.5 723.0 775.0 107.2 + 177.9 0.0 0419 2100 45.3 723.0 774.0 107.1 + 173.6 0.0 0419 2200 45.7 723.0 775.0 107.2 + 177.0 0.0 TOTAL DISSOLVED GAS REPORT FOR GRAND COULEE TAILWATER starting at 2200 18 Apr 2026 WA TM BARO TD GAS TDG TOT FLOW SPILL DATE TIME DEG F PRES PRES % KCFS KCFS 0418 2200 + 736.0 777.0 105.6 97.8 0.0 0418 2300 + 736.0 777.0 105.6 112.7 0.0 0419 0000 + 736.0 777.0 105.6 106.9 0.0 0419 0100 + 736.0 776.0 105.4 127.4 0.0 0419 0200 + 736.0 776.0 105.4 128.3 0.0 0419 0300 + 736.0 774.0 105.2 127.4 0.0 0419 0400 + 736.0 773.0 105.0 123.2 0.0 0419 0500 + 736.0 772.0 104.9 127.5 0.0 0419 0600 + 736.0 772.0 104.9 136.5 0.0 0419 0700 + 736.0 773.0 105.0 155.8 0.0 0419 0800 + 736.0 774.0 105.2 131.3 0.0 0419 0900 + 736.0 774.0 105.2 125.0 0.0 0419 1000 + 736.0 775.0 105.3 123.2 0.0 0419 1100 + 735.0 776.0 105.6 139.5 0.0 0419 1200 + 735.0 777.0 105.7 129.6 0.0 0419 1300 + 734.0 778.0 106.0 124.1 0.0 0419 1400 + 733.0 779.0 106.3 118.9 0.0 0419 1500 + 733.0 779.0 106.3 119.7 0.0 0419 1600 + 732.0 779.0 106.4 126.0 0.0 0419 1700 + 732.0 779.0 106.4 140.3 0.0 0419 1800 + 731.0 779.0 106.6 138.6 0.0 0419 1900 + 731.0 778.0 106.4 174.3 0.0 0419 2000 + 731.0 777.0 106.3 177.9 0.0 0419 2100 + 732.0 775.0 105.9 173.6 0.0 0419 2200 + 732.0 775.0 105.9 177.0 0.0 TOTAL DISSOLVED GAS REPORT FOR CHIEF JOSEPH starting at 2200 18 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0418 2200 + + + + + 90.4 0.0 0418 2300 + + + + + 89.7 0.0 0419 0000 + + + + + 79.9 0.0 0419 0100 + + + + + 98.9 0.0 0419 0200 + + + + + 101.8 0.0 0419 0300 + + + + + 113.5 0.0 0419 0400 + + + + + 124.1 0.0 0419 0500 + + + + + 123.8 0.0 0419 0600 + + + + + 133.1 0.0 0419 0700 + + + + + 133.0 0.0 0419 0800 + + + + + 134.5 0.0 0419 0900 + + + + + 131.4 0.0 0419 1000 + + + + + 131.9 0.0 0419 1100 + + + + + 133.6 0.0 0419 1200 + + + + + 133.1 0.0 0419 1300 + + + + + 135.5 0.0 0419 1400 + + + + + 136.6 0.0 0419 1500 + + + + + 136.5 0.0 0419 1600 + + + + + 135.8 0.0 0419 1700 + + + + + 137.0 0.0 0419 1800 + + + + + 139.3 0.0 0419 1900 + + + + + 141.9 0.0 0419 2000 + + + + + 141.5 0.0 0419 2100 + + + + + 141.8 0.0 0419 2200 + + + + + 140.4 0.0 TOTAL DISSOLVED GAS REPORT FOR DOWNSTREAM OF CHIEF JOSEPH starting at 2200 18 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0418 2200 44.1 740.2 773.0 104.4 8.0 90.4 0.0 0418 2300 44.1 740.3 772.0 104.3 8.0 89.7 0.0 0419 0000 44.2 740.6 773.0 104.4 7.0 79.9 0.0 0419 0100 44.2 740.9 774.0 104.5 7.0 98.9 0.0 0419 0200 44.2 741.0 771.0 104.0 8.0 101.8 0.0 0419 0300 44.2 741.0 773.0 104.3 8.0 113.5 0.0 0419 0400 44.1 741.0 774.0 104.5 9.0 124.1 0.0 0419 0500 44.1 741.1 775.0 104.6 9.0 123.8 0.0 0419 0600 44.1 741.1 776.0 104.7 10.0 133.1 0.0 0419 0700 44.1 741.2 777.0 104.8 10.0 133.0 0.0 0419 0800 44.2 741.3 777.0 104.8 10.0 134.5 0.0 0419 0900 44.2 741.3 778.0 105.0 10.0 131.4 0.0 0419 1000 44.3 740.8 779.0 105.2 10.0 131.9 0.0 0419 1100 44.3 740.4 780.0 105.3 11.0 133.6 0.0 0419 1200 44.4 739.7 781.0 105.6 11.0 133.1 0.0 0419 1300 44.4 739.0 781.0 105.7 11.0 135.5 0.0 0419 1400 44.4 738.3 781.0 105.8 12.0 136.6 0.0 0419 1500 44.5 737.6 781.0 105.9 12.0 136.5 0.0 0419 1600 44.5 737.0 782.0 106.1 13.0 135.8 0.0 0419 1700 44.4 736.5 781.0 106.0 13.0 137.0 0.0 0419 1800 44.4 736.2 781.0 106.1 13.0 139.3 0.0 0419 1900 44.4 735.9 780.0 106.0 13.0 141.9 0.0 0419 2000 44.4 735.9 780.0 106.0 13.0 141.5 0.0 0419 2100 44.4 736.2 781.0 106.1 13.0 141.8 0.0 0419 2200 44.4 736.5 781.0 106.0 12.0 140.4 0.0 TOTAL DISSOLVED GAS REPORT FOR WELLS starting at 2200 18 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0418 2200 45.3 743.0 775.0 104.3 + 168.5 11.5 0418 2300 45.3 743.0 775.0 104.3 + 149.0 11.5 0419 0000 45.3 743.0 775.0 104.3 + 141.4 11.5 0419 0100 45.3 744.0 775.0 104.2 + 120.2 9.7 0419 0200 45.3 744.0 775.0 104.2 + 99.9 7.3 0419 0300 45.3 744.0 775.0 104.2 + 85.8 7.1 0419 0400 45.3 744.0 775.0 104.2 + 82.8 7.1 0419 0500 45.3 745.0 775.0 104.0 + 81.3 7.1 0419 0600 45.3 745.0 776.0 104.2 + 135.1 8.6 0419 0700 45.5 745.0 776.0 104.2 + 128.0 8.7 0419 0800 45.5 745.0 777.0 104.3 + 128.1 8.7 0419 0900 45.5 744.0 778.0 104.6 + 128.5 8.7 0419 1000 45.7 744.0 778.0 104.6 + 89.2 8.7 0419 1100 45.7 743.0 779.0 104.8 + 79.4 7.6 0419 1200 45.7 742.0 779.0 105.0 + 92.5 6.5 0419 1300 45.9 740.0 780.0 105.4 + 81.1 6.5 0419 1400 46.0 739.0 782.0 105.8 + 76.6 6.5 0419 1500 46.0 738.0 783.0 106.1 + 69.8 7.8 0419 1600 46.2 737.0 784.0 106.4 + 107.7 24.1 0419 1700 46.0 737.0 782.0 106.1 + 140.2 26.9 0419 1800 46.0 738.0 783.0 106.1 + 161.1 13.2 0419 1900 45.9 738.0 781.0 105.8 + 175.5 12.6 0419 2000 45.7 738.0 779.0 105.6 + 163.0 12.6 0419 2100 45.7 738.0 778.0 105.4 + 175.5 12.6 0419 2200 45.7 739.0 778.0 105.3 + 176.1 12.6 TOTAL DISSOLVED GAS REPORT FOR DOWNSTREAM OF WELLS starting at 2200 18 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0418 2200 45.3 743.0 793.0 106.7 + 168.5 11.5 0418 2300 45.3 743.0 792.0 106.6 + 149.0 11.5 0419 0000 45.1 743.0 791.0 106.5 + 141.4 11.5 0419 0100 45.1 744.0 790.0 106.2 + 120.2 9.7 0419 0200 45.1 744.0 789.0 106.0 + 99.9 7.3 0419 0300 45.1 744.0 788.0 105.9 + 85.8 7.1 0419 0400 45.1 744.0 787.0 105.8 + 82.8 7.1 0419 0500 45.1 745.0 786.0 105.5 + 81.3 7.1 0419 0600 45.1 745.0 787.0 105.6 + 135.1 8.6 0419 0700 45.1 745.0 788.0 105.8 + 128.0 8.7 0419 0800 45.1 745.0 789.0 105.9 + 128.1 8.7 0419 0900 45.1 744.0 790.0 106.2 + 128.5 8.7 0419 1000 45.3 744.0 791.0 106.3 + 89.2 8.7 0419 1100 45.3 743.0 791.0 106.5 + 79.4 7.6 0419 1200 45.5 742.0 793.0 106.9 + 92.5 6.5 0419 1300 45.7 740.0 795.0 107.4 + 81.1 6.5 0419 1400 45.9 739.0 797.0 107.8 + 76.6 6.5 0419 1500 45.9 738.0 798.0 108.1 + 69.8 7.8 0419 1600 46.0 737.0 799.0 108.4 + 107.7 24.1 0419 1700 45.9 737.0 803.0 109.0 + 140.2 26.9 0419 1800 45.9 738.0 812.0 110.0 + 161.1 13.2 0419 1900 45.9 738.0 811.0 109.9 + 175.5 12.6 0419 2000 45.7 738.0 802.0 108.7 + 163.0 12.6 0419 2100 45.7 738.0 799.0 108.3 + 175.5 12.6 0419 2200 45.5 739.0 797.0 107.8 + 176.1 12.6 TOTAL DISSOLVED GAS REPORT FOR ROCKY REACH starting at 2200 18 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0418 2200 46.4 741.0 790.0 106.6 + 149.7 0.0 0418 2300 46.4 741.0 790.0 106.6 + 158.4 0.0 0419 0000 46.4 741.0 790.0 106.6 + 161.4 0.0 0419 0100 46.4 742.0 790.0 106.5 + 111.9 0.0 0419 0200 46.4 742.0 790.0 106.5 + 120.1 0.0 0419 0300 46.4 742.0 790.0 106.5 + 125.5 0.0 0419 0400 46.4 742.0 791.0 106.6 + 136.0 0.0 0419 0500 46.4 742.0 789.0 106.3 + 152.5 0.0 0419 0600 46.2 742.0 790.0 106.5 + 134.5 0.0 0419 0700 46.2 742.0 790.0 106.5 + 120.2 0.0 0419 0800 46.2 742.0 790.0 106.5 + 132.2 0.0 0419 0900 46.2 742.0 790.0 106.5 + 126.8 0.0 0419 1000 46.2 742.0 789.0 106.3 + 137.1 0.0 0419 1100 46.2 742.0 789.0 106.3 + 88.0 0.0 0419 1200 46.2 741.0 789.0 106.5 + 82.4 0.0 0419 1300 46.0 740.0 789.0 106.6 + 94.0 0.0 0419 1400 46.0 739.0 790.0 106.9 + 84.6 0.0 0419 1500 46.0 739.0 790.0 106.9 + 91.9 0.0 0419 1600 46.0 738.0 790.0 107.0 + 79.3 0.0 0419 1700 46.0 737.0 791.0 107.3 + 80.1 0.0 0419 1800 46.0 737.0 791.0 107.3 + 95.7 0.0 0419 1900 46.2 737.0 792.0 107.5 + 140.8 0.0 0419 2000 46.4 737.0 793.0 107.6 + 142.5 0.0 0419 2100 46.4 737.0 794.0 107.7 + 148.6 0.0 0419 2200 + + + + + 156.4 0.0 TOTAL DISSOLVED GAS REPORT FOR ROCKY REACH TAILWATER starting at 2200 18 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0418 2200 46.4 741.0 783.0 105.7 + 149.7 0.0 0418 2300 46.4 741.0 784.0 105.8 + 158.4 0.0 0419 0000 46.4 741.0 784.0 105.8 + 161.4 0.0 0419 0100 46.4 742.0 783.0 105.5 + 111.9 0.0 0419 0200 46.4 742.0 783.0 105.5 + 120.1 0.0 0419 0300 46.2 742.0 783.0 105.5 + 125.5 0.0 0419 0400 46.2 742.0 784.0 105.7 + 136.0 0.0 0419 0500 46.2 742.0 784.0 105.7 + 152.5 0.0 0419 0600 46.2 742.0 783.0 105.5 + 134.5 0.0 0419 0700 46.2 742.0 782.0 105.4 + 120.2 0.0 0419 0800 46.0 742.0 782.0 105.4 + 132.2 0.0 0419 0900 46.0 742.0 781.0 105.3 + 126.8 0.0 0419 1000 46.0 742.0 781.0 105.3 + 137.1 0.0 0419 1100 46.0 742.0 780.0 105.1 + 88.0 0.0 0419 1200 46.0 741.0 779.0 105.1 + 82.4 0.0 0419 1300 46.0 740.0 780.0 105.4 + 94.0 0.0 0419 1400 46.0 739.0 780.0 105.5 + 84.6 0.0 0419 1500 46.0 739.0 781.0 105.7 + 91.9 0.0 0419 1600 46.0 738.0 781.0 105.8 + 79.3 0.0 0419 1700 46.0 737.0 782.0 106.1 + 80.1 0.0 0419 1800 46.0 737.0 782.0 106.1 + 95.7 0.0 0419 1900 46.0 737.0 785.0 106.5 + 140.8 0.0 0419 2000 46.2 737.0 786.0 106.6 + 142.5 0.0 0419 2100 46.2 737.0 787.0 106.8 + 148.6 0.0 0419 2200 + + + + + 156.4 0.0 TOTAL DISSOLVED GAS REPORT FOR ROCK ISLAND starting at 2200 18 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0418 2200 46.9 747.0 792.0 106.0 + 163.2 14.1 0418 2300 46.9 747.0 792.0 106.0 + 163.3 14.1 0419 0000 46.9 747.0 792.0 106.0 + 163.4 14.2 0419 0100 46.8 747.0 791.0 105.9 + 163.7 14.4 0419 0200 46.8 747.0 790.0 105.8 + 123.6 14.3 0419 0300 46.6 747.0 789.0 105.6 + 133.3 14.3 0419 0400 46.4 747.0 787.0 105.4 + 145.1 13.8 0419 0500 46.4 747.0 786.0 105.2 + 152.6 12.4 0419 0600 46.4 747.0 786.0 105.2 + 161.5 12.3 0419 0700 46.4 747.0 786.0 105.2 + 155.1 11.9 0419 0800 46.4 748.0 786.0 105.1 + 136.7 9.2 0419 0900 46.4 748.0 787.0 105.2 + 141.5 9.2 0419 1000 46.6 747.0 787.0 105.4 + 141.9 9.1 0419 1100 46.6 747.0 788.0 105.5 + 139.8 9.1 0419 1200 46.6 746.0 790.0 105.9 + 110.1 9.1 0419 1300 46.8 745.0 791.0 106.2 + 104.9 11.3 0419 1400 46.9 745.0 792.0 106.3 + 97.3 11.3 0419 1500 46.9 744.0 793.0 106.6 + 86.4 11.4 0419 1600 46.9 743.0 794.0 106.9 + 83.2 11.7 0419 1700 46.9 743.0 795.0 107.0 + 93.2 11.5 0419 1800 46.9 742.0 796.0 107.3 + 96.5 11.4 0419 1900 46.9 742.0 796.0 107.3 + 103.1 11.3 0419 2000 46.9 742.0 796.0 107.3 + 125.1 12.0 0419 2100 46.9 742.0 795.0 107.1 + 142.5 13.6 0419 2200 + + + + + 158.2 13.6 TOTAL DISSOLVED GAS REPORT FOR ROCK ISLAND TAILWATER starting at 2200 18 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0418 2200 46.9 747.0 800.0 107.1 + 163.2 14.1 0418 2300 46.9 747.0 801.0 107.2 + 163.3 14.1 0419 0000 46.9 747.0 801.0 107.2 + 163.4 14.2 0419 0100 46.8 747.0 801.0 107.2 + 163.7 14.4 0419 0200 46.8 747.0 801.0 107.2 + 123.6 14.3 0419 0300 46.6 747.0 800.0 107.1 + 133.3 14.3 0419 0400 46.6 747.0 800.0 107.1 + 145.1 13.8 0419 0500 46.4 747.0 798.0 106.8 + 152.6 12.4 0419 0600 46.4 747.0 796.0 106.6 + 161.5 12.3 0419 0700 46.4 747.0 794.0 106.3 + 155.1 11.9 0419 0800 46.4 748.0 794.0 106.1 + 136.7 9.2 0419 0900 46.4 748.0 793.0 106.0 + 141.5 9.2 0419 1000 46.4 747.0 793.0 106.2 + 141.9 9.1 0419 1100 46.4 747.0 793.0 106.2 + 139.8 9.1 0419 1200 46.6 746.0 794.0 106.4 + 110.1 9.1 0419 1300 46.6 745.0 795.0 106.7 + 104.9 11.3 0419 1400 46.6 745.0 797.0 107.0 + 97.3 11.3 0419 1500 46.8 744.0 800.0 107.5 + 86.4 11.4 0419 1600 46.8 743.0 801.0 107.8 + 83.2 11.7 0419 1700 46.8 743.0 802.0 107.9 + 93.2 11.5 0419 1800 46.8 742.0 802.0 108.1 + 96.5 11.4 0419 1900 46.8 742.0 803.0 108.2 + 103.1 11.3 0419 2000 46.8 742.0 803.0 108.2 + 125.1 12.0 0419 2100 46.8 742.0 802.0 108.1 + 142.5 13.6 0419 2200 + + + + + 158.2 13.6 TOTAL DISSOLVED GAS REPORT FOR WANAPUM starting at 2200 18 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0418 2200 46.7 746.0 798.0 107.0 + 151.3 18.7 0418 2300 46.6 746.0 797.0 106.8 + 137.5 18.8 0419 0000 46.5 746.0 796.0 106.7 + 139.4 18.9 0419 0100 + + + + + 124.6 19.0 0419 0200 + + + + + 127.8 19.2 0419 0300 + + + + + 120.3 19.3 0419 0400 + + + + + 128.6 19.2 0419 0500 + + + + + 140.9 19.3 0419 0600 + + + + + 126.0 19.4 0419 0700 + + + + + 124.6 19.5 0419 0800 + + + + + 137.5 19.7 0419 0900 + + + + + 141.7 19.6 0419 1000 + + + + + 132.9 19.6 0419 1100 + + + + + 120.3 19.7 0419 1200 + + + + + 107.6 19.9 0419 1300 + + + + + 108.2 19.8 0419 1400 + + + + + 116.1 19.8 0419 1500 + + + + + 118.1 19.8 0419 1600 + + + + + 122.7 19.7 0419 1700 + + + + + 147.6 19.3 0419 1800 + + + + + 157.5 19.2 0419 1900 + + + + + 159.2 19.0 0419 2000 + + + + + 149.5 18.8 0419 2100 + + + + + 152.5 18.7 0419 2200 + + + + + 159.6 18.7 TOTAL DISSOLVED GAS REPORT FOR DOWNSTREAM OF WANAPUM starting at 2200 18 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0418 2200 47.0 747.0 811.0 108.6 + 151.3 18.7 0418 2300 47.0 747.0 812.0 108.7 + 137.5 18.8 0419 0000 47.0 747.0 814.0 109.0 + 139.4 18.9 0419 0100 + + + + + 124.6 19.0 0419 0200 + + + + + 127.8 19.2 0419 0300 + + + + + 120.3 19.3 0419 0400 + + + + + 128.6 19.2 0419 0500 + + + + + 140.9 19.3 0419 0600 + + + + + 126.0 19.4 0419 0700 + + + + + 124.6 19.5 0419 0800 + + + + + 137.5 19.7 0419 0900 + + + + + 141.7 19.6 0419 1000 + + + + + 132.9 19.6 0419 1100 + + + + + 120.3 19.7 0419 1200 + + + + + 107.6 19.9 0419 1300 + + + + + 108.2 19.8 0419 1400 + + + + + 116.1 19.8 0419 1500 + + + + + 118.1 19.8 0419 1600 + + + + + 122.7 19.7 0419 1700 + + + + + 147.6 19.3 0419 1800 + + + + + 157.5 19.2 0419 1900 + + + + + 159.2 19.0 0419 2000 + + + + + 149.5 18.8 0419 2100 + + + + + 152.5 18.7 0419 2200 + + + + + 159.6 18.7 TOTAL DISSOLVED GAS REPORT FOR PRIEST RAPIDS starting at 2200 18 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0418 2200 47.4 748.0 810.0 108.3 + 137.5 21.8 0418 2300 47.4 749.0 810.0 108.1 + 137.8 22.3 0419 0000 47.6 749.0 813.0 108.5 + 129.2 22.5 0419 0100 + + + + + 112.4 23.1 0419 0200 + + + + + 114.2 23.6 0419 0300 + + + + + 128.5 23.6 0419 0400 + + + + + 128.0 23.2 0419 0500 + + + + + 115.1 23.3 0419 0600 + + + + + 117.2 23.9 0419 0700 + + + + + 127.8 24.0 0419 0800 + + + + + 135.5 23.7 0419 0900 + + + + + 151.6 23.1 0419 1000 + + + + + 143.7 22.9 0419 1100 + + + + + 123.0 23.0 0419 1200 + + + + + 116.0 23.1 0419 1300 + + + + + 113.6 23.0 0419 1400 + + + + + 116.5 22.6 0419 1500 + + + + + 117.6 22.5 0419 1600 + + + + + 124.7 22.3 0419 1700 + + + + + 151.3 21.7 0419 1800 + + + + + 152.5 21.1 0419 1900 + + + + + 153.4 21.1 0419 2000 + + + + + 152.4 21.2 0419 2100 + + + + + 156.4 21.1 0419 2200 + + + + + 153.6 20.7 TOTAL DISSOLVED GAS REPORT FOR BELOW PRIEST RAPIDS starting at 2200 18 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0418 2200 47.4 750.0 821.0 109.5 + 137.5 21.8 0418 2300 47.4 749.0 824.0 110.0 + 137.8 22.3 0419 0000 47.4 750.0 823.0 109.7 + 129.2 22.5 0419 0100 + + + + + 112.4 23.1 0419 0200 + + + + + 114.2 23.6 0419 0300 + + + + + 128.5 23.6 0419 0400 + + + + + 128.0 23.2 0419 0500 + + + + + 115.1 23.3 0419 0600 + + + + + 117.2 23.9 0419 0700 + + + + + 127.8 24.0 0419 0800 + + + + + 135.5 23.7 0419 0900 + + + + + 151.6 23.1 0419 1000 + + + + + 143.7 22.9 0419 1100 + + + + + 123.0 23.0 0419 1200 + + + + + 116.0 23.1 0419 1300 + + + + + 113.6 23.0 0419 1400 + + + + + 116.5 22.6 0419 1500 + + + + + 117.6 22.5 0419 1600 + + + + + 124.7 22.3 0419 1700 + + + + + 151.3 21.7 0419 1800 + + + + + 152.5 21.1 0419 1900 + + + + + 153.4 21.1 0419 2000 + + + + + 152.4 21.2 0419 2100 + + + + + 156.4 21.1 0419 2200 + + + + + 153.6 20.7