TOTAL DISSOLVED GAS REPORT FOR DOWNSTREAM OF HUNGRY HORSE starting at 1800 20 Apr 2026 WA TM BARO TD GAS TDG TOT FLOW SPILL DATE TIME DEG F PRES PRES % KCFS KCFS 0420 1800 + 676.0 + + 8.2 0.0 0420 1900 + 676.0 + + 8.2 0.0 0420 2000 + 676.0 + + 8.2 0.0 0420 2100 + 677.0 + + 8.2 0.0 0420 2200 + 677.0 + + 8.2 0.0 0420 2300 + 677.0 + + 8.1 0.0 0421 0000 + 677.0 + + 8.2 0.0 0421 0100 + 677.0 + + 8.0 0.0 0421 0200 + 678.0 + + 8.1 0.0 0421 0300 + 678.0 + + 8.4 0.0 0421 0400 + 678.0 + + 8.1 0.0 0421 0500 + 678.0 + + 8.1 0.0 0421 0600 + 678.0 + + 8.3 0.0 0421 0700 + 679.0 + + 8.2 0.0 0421 0800 + 678.0 + + 8.2 0.0 0421 0900 + 678.0 + + 8.1 0.0 0421 1000 + 677.0 + + 8.1 0.0 0421 1100 + 676.0 + + 8.1 0.0 0421 1200 + 675.0 + + 8.3 0.0 0421 1300 + 674.0 + + 8.2 0.0 0421 1400 + 673.0 + + 8.2 0.0 0421 1500 + 672.0 + + 8.4 0.0 0421 1600 + 672.0 + + 8.3 0.0 0421 1700 + 671.0 + + 8.2 0.0 0421 1800 + 671.0 + + 8.2 0.0 TOTAL DISSOLVED GAS REPORT FOR KOOTENAI R. BL LIBBY DAM starting at 1800 20 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0420 1800 40.8 698.2 718.0 102.8 10.6 19.5 0.0 0420 1900 40.8 698.2 716.0 102.5 10.6 19.5 0.0 0420 2000 40.8 698.7 716.0 102.5 10.7 19.5 0.0 0420 2100 40.8 699.3 716.0 102.4 10.7 19.5 0.0 0420 2200 40.8 699.7 715.0 102.2 10.7 19.5 0.0 0420 2300 40.7 699.9 715.0 102.2 10.7 19.5 0.0 0421 0000 40.6 700.1 714.0 102.0 10.7 19.5 0.0 0421 0100 40.6 700.4 714.0 101.9 10.7 19.5 0.0 0421 0200 40.6 700.6 714.0 101.9 10.7 19.5 0.0 0421 0300 40.6 700.7 715.0 102.0 10.7 19.5 0.0 0421 0400 40.6 701.1 715.0 102.0 10.7 19.5 0.0 0421 0500 40.5 701.2 714.0 101.8 10.8 19.5 0.0 0421 0600 40.7 701.2 714.0 101.8 10.8 19.5 0.0 0421 0700 40.8 701.1 715.0 102.0 10.8 19.5 0.0 0421 0800 40.9 700.9 716.0 102.2 10.7 19.5 0.0 0421 0900 41.0 700.2 718.0 102.5 10.7 19.5 0.0 0421 1000 40.9 699.2 718.0 102.7 10.7 19.5 0.0 0421 1100 40.9 698.4 718.0 102.8 10.6 19.5 0.0 0421 1200 41.1 697.3 720.0 103.3 10.6 19.5 0.0 0421 1300 41.3 696.0 721.0 103.6 10.5 19.5 0.0 0421 1400 41.7 695.0 723.0 104.0 10.5 19.5 0.0 0421 1500 42.0 694.0 725.0 104.5 10.4 19.5 0.0 0421 1600 41.8 693.3 724.0 104.4 10.4 19.5 0.0 0421 1700 42.0 692.8 724.0 104.5 10.3 19.5 0.0 0421 1800 42.0 692.6 724.0 104.5 10.3 19.5 0.0 TOTAL DISSOLVED GAS REPORT FOR BOUNDARY starting at 1800 20 Apr 2026 WA TM BARO TD GAS TDG TOT FLOW DATE TIME DEG F PRES PRES % KCFS 0420 1800 46.0 718.7 787.0 109.5 112.0 0420 1900 45.9 718.5 785.0 109.3 111.0 0420 2000 45.8 718.5 784.0 109.1 110.0 0420 2100 45.8 718.8 782.0 108.8 112.0 0420 2200 45.7 719.5 780.0 108.4 113.0 0420 2300 45.6 719.9 778.0 108.1 115.0 0421 0000 45.5 720.1 776.0 107.8 115.0 0421 0100 45.4 720.2 774.0 107.5 115.0 0421 0200 45.3 720.7 771.0 107.0 115.0 0421 0300 45.3 720.8 770.0 106.8 114.0 0421 0400 45.2 720.6 769.0 106.7 112.0 0421 0500 45.2 720.9 769.0 106.7 112.0 0421 0600 45.2 720.7 770.0 106.8 112.0 0421 0700 45.2 720.6 770.0 106.9 114.0 0421 0800 45.2 720.9 771.0 107.0 114.0 0421 0900 45.3 720.2 773.0 107.3 114.0 0421 1000 45.5 719.3 775.0 107.7 113.0 0421 1100 45.6 718.6 778.0 108.3 113.0 0421 1200 45.7 717.5 781.0 108.9 112.0 0421 1300 45.9 716.2 785.0 109.6 111.0 0421 1400 46.1 715.4 788.0 110.1 111.0 0421 1500 46.2 714.5 790.0 110.6 111.0 0421 1600 46.2 714.0 791.0 110.8 112.0 0421 1700 46.3 713.8 792.0 111.0 111.0 0421 1800 + + + + + TOTAL DISSOLVED GAS REPORT FOR GRAND COULEE FOREBAY starting at 1800 20 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0420 1800 45.7 720.0 776.0 107.8 + 144.6 0.0 0420 1900 45.7 720.0 776.0 107.8 + 162.4 0.0 0420 2000 45.7 720.0 776.0 107.8 + 168.8 0.0 0420 2100 45.7 720.0 776.0 107.8 + 176.3 0.0 0420 2200 45.7 720.0 776.0 107.8 + 161.5 0.0 0420 2300 45.5 720.0 775.0 107.6 + 147.4 0.0 0421 0000 45.7 721.0 775.0 107.5 + 121.1 0.0 0421 0100 45.7 721.0 775.0 107.5 + 124.4 0.0 0421 0200 45.7 720.0 776.0 107.8 + 112.2 0.0 0421 0300 45.9 720.0 776.0 107.8 + 106.6 0.0 0421 0400 45.7 720.0 776.0 107.8 + 107.4 0.0 0421 0500 45.5 720.0 775.0 107.6 + 107.4 0.0 0421 0600 45.1 720.0 773.0 107.4 + 127.5 0.0 0421 0700 45.0 720.0 771.0 107.1 + 122.0 0.0 0421 0800 45.0 720.0 771.0 107.1 + 119.2 0.0 0421 0900 45.0 719.0 771.0 107.2 + 98.7 0.0 0421 1000 45.0 719.0 771.0 107.2 + 103.4 0.0 0421 1100 45.0 719.0 770.0 107.1 + 103.8 0.0 0421 1200 45.3 718.0 772.0 107.5 + 104.4 0.0 0421 1300 45.5 717.0 773.0 107.8 + 97.1 0.0 0421 1400 45.7 717.0 774.0 107.9 + 93.7 0.0 0421 1500 46.0 717.0 778.0 108.5 + 75.8 0.0 0421 1600 46.0 716.0 781.0 109.1 + 82.4 0.0 0421 1700 46.0 716.0 780.0 108.9 + 85.9 0.0 0421 1800 45.7 716.0 780.0 108.9 + 98.4 0.0 TOTAL DISSOLVED GAS REPORT FOR GRAND COULEE TAILWATER starting at 1800 20 Apr 2026 WA TM BARO TD GAS TDG TOT FLOW SPILL DATE TIME DEG F PRES PRES % KCFS KCFS 0420 1800 + 728.0 783.0 107.6 144.6 0.0 0420 1900 + 728.0 782.0 107.4 162.4 0.0 0420 2000 + 728.0 780.0 107.1 168.8 0.0 0420 2100 + 729.0 778.0 106.7 176.3 0.0 0420 2200 + 729.0 777.0 106.6 161.5 0.0 0420 2300 + 729.0 776.0 106.4 147.4 0.0 0421 0000 + 729.0 776.0 106.4 121.1 0.0 0421 0100 + 729.0 775.0 106.3 124.4 0.0 0421 0200 + 729.0 775.0 106.3 112.2 0.0 0421 0300 + 729.0 775.0 106.3 106.6 0.0 0421 0400 + 729.0 775.0 106.3 107.4 0.0 0421 0500 + 729.0 777.0 106.6 107.4 0.0 0421 0600 + 729.0 777.0 106.6 127.5 0.0 0421 0700 + 729.0 778.0 106.7 122.0 0.0 0421 0800 + 728.0 778.0 106.9 119.2 0.0 0421 0900 + 728.0 779.0 107.0 98.7 0.0 0421 1000 + 727.0 780.0 107.3 103.4 0.0 0421 1100 + 727.0 781.0 107.4 103.8 0.0 0421 1200 + 726.0 783.0 107.9 104.4 0.0 0421 1300 + 725.0 783.0 108.0 97.1 0.0 0421 1400 + 725.0 784.0 108.1 93.7 0.0 0421 1500 + 725.0 784.0 108.1 75.8 0.0 0421 1600 + 724.0 784.0 108.3 82.4 0.0 0421 1700 + 724.0 785.0 108.4 85.9 0.0 0421 1800 + 724.0 784.0 108.3 98.4 0.0 TOTAL DISSOLVED GAS REPORT FOR CHIEF JOSEPH starting at 1800 20 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0420 1800 45.6 728.2 783.0 107.5 + 141.1 15.2 0420 1900 45.8 728.0 785.0 107.8 + 142.2 15.2 0420 2000 45.5 728.0 784.0 107.7 + 141.3 15.2 0420 2100 45.4 728.4 783.0 107.5 + 141.4 15.2 0420 2200 45.3 728.6 782.0 107.3 + 141.0 15.2 0420 2300 45.4 728.5 781.0 107.2 + 139.4 15.2 0421 0000 + + + + + 138.0 15.2 0421 0100 45.3 729.1 780.0 107.0 + 138.5 15.2 0421 0200 45.2 728.9 780.0 107.0 + 138.6 15.2 0421 0300 45.2 728.8 779.0 106.9 + 137.6 15.2 0421 0400 45.2 728.8 779.0 106.9 + 120.9 24.2 0421 0500 45.2 728.8 779.0 106.9 + 119.0 24.2 0421 0600 45.2 728.6 778.0 106.8 + 119.7 24.2 0421 0700 45.2 728.7 778.0 106.8 + 118.8 24.2 0421 0800 45.3 728.5 778.0 106.8 + 118.8 24.2 0421 0900 45.3 727.9 779.0 107.0 + 115.5 24.2 0421 1000 45.4 727.5 780.0 107.2 + 108.6 24.2 0421 1100 45.5 726.9 781.0 107.4 + 100.5 24.2 0421 1200 45.6 726.4 783.0 107.8 + 97.0 24.2 0421 1300 45.8 725.5 785.0 108.2 + 96.2 24.2 0421 1400 45.9 724.9 786.0 108.4 + 96.9 24.2 0421 1500 46.0 724.4 786.0 108.5 + 107.9 24.2 0421 1600 46.0 724.1 786.0 108.5 + 101.7 24.2 0421 1700 46.0 723.8 786.0 108.6 + 117.3 24.2 0421 1800 45.9 723.6 786.0 108.6 + 119.1 24.2 TOTAL DISSOLVED GAS REPORT FOR DOWNSTREAM OF CHIEF JOSEPH starting at 1800 20 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0420 1800 44.9 732.6 786.0 107.3 12.0 141.1 15.2 0420 1900 44.9 732.4 786.0 107.3 11.0 142.2 15.2 0420 2000 44.9 732.4 784.0 107.0 11.0 141.3 15.2 0420 2100 44.9 732.8 785.0 107.1 11.0 141.4 15.2 0420 2200 44.9 733.1 785.0 107.1 11.0 141.0 15.2 0420 2300 44.9 733.0 785.0 107.1 11.0 139.4 15.2 0421 0000 44.9 733.4 784.0 106.9 11.0 138.0 15.2 0421 0100 44.9 733.6 784.0 106.9 11.0 138.5 15.2 0421 0200 44.9 733.5 784.0 106.9 11.0 138.6 15.2 0421 0300 44.9 733.4 784.0 106.9 11.0 137.6 15.2 0421 0400 44.9 733.4 801.0 109.2 11.0 120.9 24.2 0421 0500 45.0 733.4 808.0 110.2 11.0 119.0 24.2 0421 0600 45.0 733.2 808.0 110.2 11.0 119.7 24.2 0421 0700 45.0 733.4 808.0 110.2 10.0 118.8 24.2 0421 0800 45.1 733.1 808.0 110.2 10.0 118.8 24.2 0421 0900 45.2 732.4 809.0 110.5 10.0 115.5 24.2 0421 1000 45.3 731.9 809.0 110.5 9.0 108.6 24.2 0421 1100 45.5 731.4 808.0 110.5 9.0 100.5 24.2 0421 1200 45.6 730.8 808.0 110.6 8.0 97.0 24.2 0421 1300 45.7 729.9 808.0 110.7 8.0 96.2 24.2 0421 1400 45.8 729.3 808.0 110.8 8.0 96.9 24.2 0421 1500 45.7 728.7 806.0 110.6 8.0 107.9 24.2 0421 1600 45.8 728.4 805.0 110.5 8.0 101.7 24.2 0421 1700 45.8 728.1 803.0 110.3 9.0 117.3 24.2 0421 1800 + + + + 9.0 119.1 24.2 TOTAL DISSOLVED GAS REPORT FOR WELLS starting at 1800 20 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0420 1800 45.9 735.0 782.0 106.4 + 170.6 12.0 0420 1900 45.9 735.0 781.0 106.3 + 173.4 12.0 0420 2000 45.7 735.0 780.0 106.1 + 169.6 12.0 0420 2100 45.9 735.0 780.0 106.1 + 169.0 12.0 0420 2200 45.9 736.0 780.0 106.0 + 169.1 12.0 0420 2300 45.9 736.0 781.0 106.1 + 170.3 12.0 0421 0000 45.9 736.0 781.0 106.1 + 166.1 12.0 0421 0100 45.9 737.0 781.0 106.0 + 162.2 10.9 0421 0200 45.9 737.0 782.0 106.1 + 118.1 10.9 0421 0300 45.9 737.0 782.0 106.1 + 122.3 10.9 0421 0400 45.9 737.0 782.0 106.1 + 130.5 10.9 0421 0500 46.0 737.0 783.0 106.2 + 142.4 10.9 0421 0600 46.0 737.0 783.0 106.2 + 169.0 10.9 0421 0700 46.0 737.0 783.0 106.2 + 160.6 10.9 0421 0800 46.0 737.0 783.0 106.2 + 139.3 10.9 0421 0900 46.0 736.0 783.0 106.4 + 164.6 10.9 0421 1000 46.0 735.0 783.0 106.5 + 166.8 10.9 0421 1100 46.0 734.0 783.0 106.7 + 149.6 10.9 0421 1200 46.0 732.0 783.0 107.0 + 149.3 10.9 0421 1300 46.2 732.0 788.0 107.7 + 139.5 10.9 0421 1400 46.2 730.0 785.0 107.5 + 119.5 10.9 0421 1500 46.4 729.0 785.0 107.7 + 117.3 10.9 0421 1600 46.4 728.0 785.0 107.8 + 110.2 10.9 0421 1700 46.4 729.0 785.0 107.7 + 99.9 7.9 0421 1800 46.2 729.0 785.0 107.7 + 117.0 7.3 TOTAL DISSOLVED GAS REPORT FOR DOWNSTREAM OF WELLS starting at 1800 20 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0420 1800 45.7 735.0 799.0 108.7 + 170.6 12.0 0420 1900 45.7 735.0 798.0 108.6 + 173.4 12.0 0420 2000 45.7 735.0 797.0 108.4 + 169.6 12.0 0420 2100 45.5 735.0 796.0 108.3 + 169.0 12.0 0420 2200 45.5 736.0 796.0 108.2 + 169.1 12.0 0420 2300 45.5 736.0 796.0 108.2 + 170.3 12.0 0421 0000 45.7 736.0 796.0 108.2 + 166.1 12.0 0421 0100 45.7 737.0 795.0 107.9 + 162.2 10.9 0421 0200 45.7 737.0 795.0 107.9 + 118.1 10.9 0421 0300 45.7 737.0 795.0 107.9 + 122.3 10.9 0421 0400 45.7 737.0 796.0 108.0 + 130.5 10.9 0421 0500 45.7 737.0 796.0 108.0 + 142.4 10.9 0421 0600 45.7 737.0 796.0 108.0 + 169.0 10.9 0421 0700 45.7 737.0 796.0 108.0 + 160.6 10.9 0421 0800 45.7 737.0 797.0 108.1 + 139.3 10.9 0421 0900 45.7 736.0 797.0 108.3 + 164.6 10.9 0421 1000 45.9 735.0 798.0 108.6 + 166.8 10.9 0421 1100 46.0 734.0 801.0 109.1 + 149.6 10.9 0421 1200 46.0 732.0 807.0 110.2 + 149.3 10.9 0421 1300 46.0 732.0 807.0 110.2 + 139.5 10.9 0421 1400 46.0 730.0 806.0 110.4 + 119.5 10.9 0421 1500 46.2 729.0 806.0 110.6 + 117.3 10.9 0421 1600 46.2 728.0 805.0 110.6 + 110.2 10.9 0421 1700 46.2 729.0 805.0 110.4 + 99.9 7.9 0421 1800 46.2 729.0 805.0 110.4 + 117.0 7.3 TOTAL DISSOLVED GAS REPORT FOR ROCKY REACH starting at 1800 20 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0420 1800 46.6 734.0 795.0 108.3 + 141.2 0.0 0420 1900 46.6 734.0 795.0 108.3 + 161.0 0.0 0420 2000 46.8 734.0 796.0 108.4 + 164.4 0.0 0420 2100 46.8 734.0 797.0 108.6 + 165.3 0.0 0420 2200 46.8 734.0 798.0 108.7 + 166.2 0.0 0420 2300 46.8 734.0 799.0 108.9 + 166.2 0.0 0421 0000 46.8 735.0 800.0 108.8 + 157.3 0.0 0421 0100 46.8 735.0 800.0 108.8 + 153.9 0.0 0421 0200 46.6 735.0 800.0 108.8 + 134.8 0.0 0421 0300 46.6 734.0 799.0 108.9 + 139.8 0.0 0421 0400 46.6 734.0 799.0 108.9 + 137.0 0.0 0421 0500 46.6 734.0 798.0 108.7 + 122.3 0.0 0421 0600 46.6 734.0 798.0 108.7 + 125.1 0.0 0421 0700 46.4 734.0 797.0 108.6 + 152.9 0.0 0421 0800 46.4 734.0 797.0 108.6 + 166.5 0.0 0421 0900 46.4 734.0 796.0 108.4 + 150.6 0.0 0421 1000 46.4 733.0 796.0 108.6 + 147.6 0.0 0421 1100 46.6 733.0 797.0 108.7 + 133.0 0.0 0421 1200 46.6 732.0 797.0 108.9 + 129.0 0.0 0421 1300 46.6 731.0 797.0 109.0 + 138.2 0.0 0421 1400 46.6 731.0 798.0 109.2 + 138.7 0.0 0421 1500 46.8 730.0 798.0 109.3 + 127.8 0.0 0421 1600 46.8 730.0 799.0 109.5 + 127.4 0.0 0421 1700 46.8 729.0 800.0 109.7 + 135.3 0.0 0421 1800 + + + + + 138.2 0.0 TOTAL DISSOLVED GAS REPORT FOR ROCKY REACH TAILWATER starting at 1800 20 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0420 1800 46.4 734.0 787.0 107.2 + 141.2 0.0 0420 1900 46.6 734.0 789.0 107.5 + 161.0 0.0 0420 2000 46.6 734.0 790.0 107.6 + 164.4 0.0 0420 2100 46.6 734.0 791.0 107.8 + 165.3 0.0 0420 2200 46.6 734.0 792.0 107.9 + 166.2 0.0 0420 2300 46.6 734.0 792.0 107.9 + 166.2 0.0 0421 0000 46.6 735.0 793.0 107.9 + 157.3 0.0 0421 0100 46.6 735.0 793.0 107.9 + 153.9 0.0 0421 0200 46.6 735.0 792.0 107.8 + 134.8 0.0 0421 0300 46.6 734.0 792.0 107.9 + 139.8 0.0 0421 0400 46.4 734.0 791.0 107.8 + 137.0 0.0 0421 0500 46.4 734.0 790.0 107.6 + 122.3 0.0 0421 0600 46.4 734.0 789.0 107.5 + 125.1 0.0 0421 0700 46.4 734.0 789.0 107.5 + 152.9 0.0 0421 0800 46.4 734.0 790.0 107.6 + 166.5 0.0 0421 0900 46.4 734.0 789.0 107.5 + 150.6 0.0 0421 1000 46.4 733.0 789.0 107.6 + 147.6 0.0 0421 1100 46.4 733.0 789.0 107.6 + 133.0 0.0 0421 1200 46.4 732.0 789.0 107.8 + 129.0 0.0 0421 1300 46.4 731.0 789.0 107.9 + 138.2 0.0 0421 1400 46.6 731.0 790.0 108.1 + 138.7 0.0 0421 1500 46.6 730.0 791.0 108.4 + 127.8 0.0 0421 1600 46.6 730.0 791.0 108.4 + 127.4 0.0 0421 1700 46.8 729.0 792.0 108.6 + 135.3 0.0 0421 1800 + + + + + 138.2 0.0 TOTAL DISSOLVED GAS REPORT FOR ROCK ISLAND starting at 1800 20 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0420 1800 47.1 739.0 800.0 108.3 + 140.3 11.9 0420 1900 47.1 739.0 800.0 108.3 + 158.4 11.7 0420 2000 47.1 739.0 799.0 108.1 + 155.0 12.3 0420 2100 47.1 739.0 798.0 108.0 + 163.4 16.1 0420 2200 46.9 739.0 797.0 107.8 + 165.3 16.4 0420 2300 46.9 740.0 796.0 107.6 + 165.6 16.7 0421 0000 46.9 740.0 795.0 107.4 + 166.1 17.0 0421 0100 46.9 739.0 794.0 107.4 + 166.4 17.1 0421 0200 46.9 739.0 793.0 107.3 + 166.1 17.0 0421 0300 46.9 739.0 793.0 107.3 + 161.4 16.4 0421 0400 46.9 739.0 793.0 107.3 + 154.0 16.2 0421 0500 46.8 739.0 794.0 107.4 + 149.5 14.0 0421 0600 46.8 739.0 794.0 107.4 + 146.4 13.6 0421 0700 46.8 739.0 795.0 107.6 + 155.0 13.0 0421 0800 46.8 739.0 796.0 107.7 + 152.4 10.5 0421 0900 46.8 739.0 796.0 107.7 + 161.1 10.8 0421 1000 46.9 739.0 796.0 107.7 + 161.3 10.8 0421 1100 46.9 738.0 797.0 108.0 + 159.3 10.8 0421 1200 46.9 737.0 798.0 108.3 + 150.7 10.8 0421 1300 47.1 737.0 798.0 108.3 + 135.8 13.6 0421 1400 47.1 736.0 799.0 108.6 + 136.0 14.0 0421 1500 47.3 735.0 800.0 108.8 + 143.1 14.1 0421 1600 47.3 735.0 801.0 109.0 + 143.3 14.0 0421 1700 47.3 735.0 801.0 109.0 + 140.2 13.9 0421 1800 + + + + + 150.0 13.9 TOTAL DISSOLVED GAS REPORT FOR ROCK ISLAND TAILWATER starting at 1800 20 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0420 1800 46.9 739.0 806.0 109.1 + 140.3 11.9 0420 1900 46.9 739.0 806.0 109.1 + 158.4 11.7 0420 2000 46.9 739.0 805.0 108.9 + 155.0 12.3 0420 2100 46.9 739.0 805.0 108.9 + 163.4 16.1 0420 2200 46.9 739.0 808.0 109.3 + 165.3 16.4 0420 2300 46.9 740.0 810.0 109.5 + 165.6 16.7 0421 0000 46.9 740.0 810.0 109.5 + 166.1 17.0 0421 0100 46.9 739.0 810.0 109.6 + 166.4 17.1 0421 0200 46.9 739.0 810.0 109.6 + 166.1 17.0 0421 0300 46.8 739.0 809.0 109.5 + 161.4 16.4 0421 0400 46.8 739.0 809.0 109.5 + 154.0 16.2 0421 0500 46.8 739.0 808.0 109.3 + 149.5 14.0 0421 0600 46.8 739.0 806.0 109.1 + 146.4 13.6 0421 0700 46.8 739.0 804.0 108.8 + 155.0 13.0 0421 0800 46.8 739.0 803.0 108.7 + 152.4 10.5 0421 0900 46.8 739.0 802.0 108.5 + 161.1 10.8 0421 1000 46.8 739.0 802.0 108.5 + 161.3 10.8 0421 1100 46.8 738.0 802.0 108.7 + 159.3 10.8 0421 1200 46.9 737.0 802.0 108.8 + 150.7 10.8 0421 1300 46.9 737.0 803.0 109.0 + 135.8 13.6 0421 1400 46.9 736.0 804.0 109.2 + 136.0 14.0 0421 1500 46.9 735.0 806.0 109.7 + 143.1 14.1 0421 1600 47.1 735.0 807.0 109.8 + 143.3 14.0 0421 1700 47.1 735.0 807.0 109.8 + 140.2 13.9 0421 1800 + + + + + 150.0 13.9 TOTAL DISSOLVED GAS REPORT FOR WANAPUM starting at 1800 20 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0420 1800 48.3 738.0 817.0 110.7 + 162.6 19.5 0420 1900 48.0 738.0 814.0 110.3 + 141.1 19.5 0420 2000 47.7 738.0 811.0 109.9 + 154.1 19.6 0420 2100 47.0 739.0 804.0 108.8 + 153.4 19.6 0420 2200 47.0 739.0 802.0 108.5 + 147.0 19.6 0420 2300 46.9 739.0 802.0 108.5 + 168.8 19.7 0421 0000 47.6 739.0 806.0 109.1 + 152.1 19.7 0421 0100 + + + + + 139.9 19.8 0421 0200 + + + + + 130.1 20.0 0421 0300 + + + + + 139.0 22.7 0421 0400 + + + + + 147.2 30.4 0421 0500 + + + + + 172.3 38.9 0421 0600 + + + + + 171.0 22.5 0421 0700 + + + + + 156.8 20.0 0421 0800 + + + + + 147.0 20.0 0421 0900 + + + + + 150.8 20.0 0421 1000 + + + + + 154.8 20.1 0421 1100 + + + + + 146.5 20.1 0421 1200 + + + + + 150.8 20.1 0421 1300 + + + + + 143.0 20.2 0421 1400 + + + + + 149.4 20.2 0421 1500 + + + + + 144.5 20.1 0421 1600 + + + + + 135.2 20.2 0421 1700 + + + + + 150.9 20.1 0421 1800 + + + + + + + TOTAL DISSOLVED GAS REPORT FOR DOWNSTREAM OF WANAPUM starting at 1800 20 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0420 1800 47.5 739.0 816.0 110.4 + 162.6 19.5 0420 1900 47.5 739.0 817.0 110.6 + 141.1 19.5 0420 2000 47.5 739.0 816.0 110.4 + 154.1 19.6 0420 2100 47.5 739.0 816.0 110.4 + 153.4 19.6 0420 2200 47.5 740.0 817.0 110.4 + 147.0 19.6 0420 2300 47.4 739.0 815.0 110.3 + 168.8 19.7 0421 0000 47.4 739.0 815.0 110.3 + 152.1 19.7 0421 0100 + + + + + 139.9 19.8 0421 0200 + + + + + 130.1 20.0 0421 0300 + + + + + 139.0 22.7 0421 0400 + + + + + 147.2 30.4 0421 0500 + + + + + 172.3 38.9 0421 0600 + + + + + 171.0 22.5 0421 0700 + + + + + 156.8 20.0 0421 0800 + + + + + 147.0 20.0 0421 0900 + + + + + 150.8 20.0 0421 1000 + + + + + 154.8 20.1 0421 1100 + + + + + 146.5 20.1 0421 1200 + + + + + 150.8 20.1 0421 1300 + + + + + 143.0 20.2 0421 1400 + + + + + 149.4 20.2 0421 1500 + + + + + 144.5 20.1 0421 1600 + + + + + 135.2 20.2 0421 1700 + + + + + 150.9 20.1 0421 1800 + + + + + + + TOTAL DISSOLVED GAS REPORT FOR PRIEST RAPIDS starting at 1800 20 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0420 1800 48.1 741.0 816.0 110.1 + 152.0 19.0 0420 1900 48.6 741.0 822.0 110.9 + 156.5 19.0 0420 2000 48.0 741.0 819.0 110.5 + 157.6 18.7 0420 2100 48.0 741.0 819.0 110.5 + 155.5 18.5 0420 2200 48.0 741.0 820.0 110.7 + 141.6 18.7 0420 2300 48.0 741.0 821.0 110.8 + 144.1 18.8 0421 0000 48.1 741.0 822.0 110.9 + 148.0 19.2 0421 0100 + + + + + 157.0 19.3 0421 0200 + + + + + 154.0 18.8 0421 0300 + + + + + 144.0 18.4 0421 0400 + + + + + 142.7 18.2 0421 0500 + + + + + 143.0 18.2 0421 0600 + + + + + 145.6 18.6 0421 0700 + + + + + 155.3 19.1 0421 0800 + + + + + 152.6 19.2 0421 0900 + + + + + 152.0 19.1 0421 1000 + + + + + 152.1 19.0 0421 1100 + + + + + 147.3 19.1 0421 1200 + + + + + 148.0 19.0 0421 1300 + + + + + 144.4 19.1 0421 1400 + + + + + 143.2 19.1 0421 1500 + + + + + 143.3 19.0 0421 1600 + + + + + 138.6 19.1 0421 1700 + + + + + 142.9 19.1 0421 1800 + + + + + + + TOTAL DISSOLVED GAS REPORT FOR BELOW PRIEST RAPIDS starting at 1800 20 Apr 2026 WA TM BARO TD GAS TDG DEPTH OF TOT FLOW SPILL DATE TIME DEG F PRES PRES % GAGE(FT) KCFS KCFS 0420 1800 48.3 742.0 828.0 111.6 + 152.0 19.0 0420 1900 48.2 742.0 826.0 111.3 + 156.5 19.0 0420 2000 48.1 742.0 825.0 111.2 + 157.6 18.7 0420 2100 48.1 742.0 823.0 110.9 + 155.5 18.5 0420 2200 48.1 742.0 822.0 110.8 + 141.6 18.7 0420 2300 47.9 742.0 822.0 110.8 + 144.1 18.8 0421 0000 48.0 742.0 824.0 111.1 + 148.0 19.2 0421 0100 + + + + + 157.0 19.3 0421 0200 + + + + + 154.0 18.8 0421 0300 + + + + + 144.0 18.4 0421 0400 + + + + + 142.7 18.2 0421 0500 + + + + + 143.0 18.2 0421 0600 + + + + + 145.6 18.6 0421 0700 + + + + + 155.3 19.1 0421 0800 + + + + + 152.6 19.2 0421 0900 + + + + + 152.0 19.1 0421 1000 + + + + + 152.1 19.0 0421 1100 + + + + + 147.3 19.1 0421 1200 + + + + + 148.0 19.0 0421 1300 + + + + + 144.4 19.1 0421 1400 + + + + + 143.2 19.1 0421 1500 + + + + + 143.3 19.0 0421 1600 + + + + + 138.6 19.1 0421 1700 + + + + + 142.9 19.1 0421 1800 + + + + + + +