TOTAL DISSOLVED GAS REPORT FOR PASCO, WA starting at 1700 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 1700 48.6 751.7 826.0 109.9 16.5 + + 0418 1800 48.7 751.2 826.0 110.0 16.5 + + 0418 1900 48.6 750.8 824.0 109.7 16.4 + + 0418 2000 48.5 750.7 823.0 109.6 16.4 + + 0418 2100 48.5 751.0 821.0 109.3 16.3 + + 0418 2200 48.5 751.1 819.0 109.0 16.3 + + 0418 2300 48.5 751.0 818.0 108.9 16.3 + + 0419 0000 48.5 751.2 817.0 108.8 16.3 + + 0419 0100 48.5 751.3 816.0 108.6 16.2 + + 0419 0200 48.5 751.3 816.0 108.6 16.2 + + 0419 0300 48.5 751.3 815.0 108.5 16.1 + + 0419 0400 48.5 751.3 815.0 108.5 16.1 + + 0419 0500 48.5 751.4 814.0 108.3 16.1 + + 0419 0600 48.4 751.3 813.0 108.2 16.1 + + 0419 0700 48.4 751.5 811.0 107.9 16.1 + + 0419 0800 48.4 751.7 810.0 107.8 16.0 + + 0419 0900 48.4 751.7 809.0 107.6 16.0 + + 0419 1000 48.5 751.4 810.0 107.8 16.0 + + 0419 1100 48.7 751.1 811.0 108.0 15.9 + + 0419 1200 48.9 750.4 812.0 108.2 15.9 + + 0419 1300 49.1 749.9 814.0 108.5 15.8 + + 0419 1400 49.3 749.1 816.0 108.9 15.8 + + 0419 1500 49.4 748.6 817.0 109.1 15.8 + + 0419 1600 49.4 747.7 818.0 109.4 15.7 + + 0419 1700 49.5 747.3 819.0 109.6 15.7 + + TOTAL DISSOLVED GAS REPORT FOR McNARY WASHINGTON SIDE starting at 1700 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 1700 50.0 751.3 819.0 109.0 49.0 221.1 164.6 0418 1800 50.1 750.8 820.0 109.2 48.7 222.2 164.5 0418 1900 49.9 750.2 823.0 109.7 49.0 222.3 164.4 0418 2000 50.0 749.8 824.0 109.9 49.4 220.5 162.9 0418 2100 50.0 749.9 825.0 110.0 49.4 207.2 149.7 0418 2200 49.9 749.5 825.0 110.1 49.3 206.7 149.5 0418 2300 50.1 749.8 826.0 110.2 49.0 207.2 149.4 0419 0000 50.0 750.4 826.0 110.1 49.0 207.7 149.6 0419 0100 50.1 750.0 826.0 110.1 49.1 207.5 150.0 0419 0200 50.1 750.1 826.0 110.1 49.0 207.6 149.8 0419 0300 50.1 750.6 827.0 110.2 49.0 207.3 149.7 0419 0400 50.1 750.6 826.0 110.0 49.0 206.9 149.6 0419 0500 50.1 750.5 825.0 109.9 48.8 207.1 150.1 0419 0600 50.1 750.5 826.0 110.1 48.5 207.0 150.0 0419 0700 50.1 750.7 827.0 110.2 48.7 207.3 149.9 0419 0800 50.1 750.9 827.0 110.1 48.9 207.1 149.7 0419 0900 50.1 750.8 827.0 110.1 49.0 206.6 149.6 0419 1000 50.1 750.9 828.0 110.3 48.9 206.4 149.4 0419 1100 50.1 750.3 828.0 110.4 48.7 207.1 149.1 0419 1200 50.0 750.2 828.0 110.4 48.7 207.2 149.0 0419 1300 50.3 749.4 829.0 110.6 48.2 206.4 148.8 0419 1400 50.4 749.0 830.0 110.8 48.2 206.6 148.5 0419 1500 50.5 748.3 831.0 111.1 48.0 206.9 148.7 0419 1600 50.3 747.7 831.0 111.1 48.2 206.4 148.9 0419 1700 50.5 747.2 832.0 111.3 48.6 206.3 148.7 TOTAL DISSOLVED GAS REPORT FOR McNARY TAILWATER starting at 1700 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 1700 50.0 753.6 922.0 122.3 18.9 221.1 164.6 0418 1800 50.0 753.2 919.0 122.0 18.8 222.2 164.5 0418 1900 50.0 752.7 917.0 121.8 18.8 222.3 164.4 0418 2000 50.0 752.4 915.0 121.6 18.7 220.5 162.9 0418 2100 49.9 752.5 913.0 121.3 18.5 207.2 149.7 0418 2200 49.9 752.5 911.0 121.1 18.5 206.7 149.5 0418 2300 49.9 752.6 910.0 120.9 18.5 207.2 149.4 0419 0000 49.9 752.7 909.0 120.8 18.6 207.7 149.6 0419 0100 49.9 752.9 909.0 120.7 18.6 207.5 150.0 0419 0200 49.9 752.9 909.0 120.7 18.6 207.6 149.8 0419 0300 50.0 753.0 909.0 120.7 18.5 207.3 149.7 0419 0400 50.0 753.1 908.0 120.6 18.6 206.9 149.6 0419 0500 50.0 752.9 908.0 120.6 18.5 207.1 150.1 0419 0600 50.0 752.9 907.0 120.5 18.5 207.0 150.0 0419 0700 50.1 753.0 906.0 120.3 18.7 207.3 149.9 0419 0800 50.1 753.3 906.0 120.3 18.7 207.1 149.7 0419 0900 50.1 753.2 907.0 120.4 18.6 206.6 149.6 0419 1000 50.2 753.2 907.0 120.4 18.6 206.4 149.4 0419 1100 50.3 752.5 908.0 120.7 18.5 207.1 149.1 0419 1200 50.3 752.5 908.0 120.7 18.5 207.2 149.0 0419 1300 50.3 751.7 907.0 120.7 18.5 206.4 148.8 0419 1400 50.3 751.2 907.0 120.7 18.4 206.6 148.5 0419 1500 50.4 750.6 906.0 120.7 18.4 206.9 148.7 0419 1600 50.4 749.9 906.0 120.8 18.4 206.4 148.9 0419 1700 50.5 749.5 905.0 120.7 18.2 206.3 148.7 TOTAL DISSOLVED GAS REPORT FOR JOHN DAY (Wingwall) starting at 1700 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 1700 50.4 754.0 819.0 108.6 31.6 246.2 185.1 0418 1800 50.5 753.0 820.0 108.9 31.6 245.7 185.1 0418 1900 50.5 753.0 821.0 109.0 30.0 246.9 185.1 0418 2000 50.6 753.0 822.0 109.2 31.9 246.4 182.9 0418 2100 50.7 753.0 822.0 109.2 31.8 217.1 155.2 0418 2200 50.5 753.0 822.0 109.2 31.9 218.2 154.9 0418 2300 50.5 753.0 823.0 109.3 31.8 218.4 154.9 0419 0000 50.6 754.0 823.0 109.2 32.0 219.6 154.9 0419 0100 50.6 754.0 823.0 109.2 31.5 217.2 154.9 0419 0200 50.5 754.0 824.0 109.3 31.6 217.4 154.9 0419 0300 50.5 754.0 823.0 109.2 32.0 217.9 154.9 0419 0400 50.5 754.0 824.0 109.3 32.0 217.5 154.9 0419 0500 50.5 754.0 824.0 109.3 32.0 217.2 154.9 0419 0600 50.3 753.0 823.0 109.3 31.6 219.1 154.9 0419 0700 50.2 754.0 823.0 109.2 31.8 217.2 154.9 0419 0800 50.3 754.0 823.0 109.2 31.7 217.5 154.9 0419 0900 50.3 754.0 823.0 109.2 31.9 216.8 154.9 0419 1000 50.3 754.0 824.0 109.3 31.2 217.0 154.9 0419 1100 50.4 754.0 825.0 109.4 31.2 217.7 154.9 0419 1200 50.4 753.0 825.0 109.6 31.6 219.4 154.9 0419 1300 50.3 753.0 825.0 109.6 31.7 217.7 154.9 0419 1400 50.2 752.0 825.0 109.7 31.5 218.1 154.9 0419 1500 50.4 751.0 826.0 110.0 31.8 218.4 154.9 0419 1600 50.4 751.0 827.0 110.1 31.7 218.3 154.9 0419 1700 50.4 750.0 828.0 110.4 31.7 220.1 154.9 TOTAL DISSOLVED GAS REPORT FOR JOHN DAY TAILWATER starting at 1700 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 1700 50.7 756.0 910.0 120.4 15.4 246.2 185.1 0418 1800 50.7 755.0 907.0 120.1 15.4 245.7 185.1 0418 1900 50.7 755.0 909.0 120.4 15.5 246.9 185.1 0418 2000 50.7 755.0 909.0 120.4 15.0 246.4 182.9 0418 2100 50.7 755.0 895.0 118.5 14.6 217.1 155.2 0418 2200 50.7 755.0 892.0 118.1 14.7 218.2 154.9 0418 2300 50.7 756.0 891.0 117.9 14.6 218.4 154.9 0419 0000 50.7 756.0 893.0 118.1 14.7 219.6 154.9 0419 0100 50.6 756.0 891.0 117.9 14.6 217.2 154.9 0419 0200 50.6 756.0 892.0 118.0 14.7 217.4 154.9 0419 0300 50.6 756.0 893.0 118.1 15.0 217.9 154.9 0419 0400 50.6 756.0 894.0 118.3 15.1 217.5 154.9 0419 0500 50.5 756.0 893.0 118.1 15.4 217.2 154.9 0419 0600 50.5 756.0 895.0 118.4 15.8 219.1 154.9 0419 0700 50.4 756.0 897.0 118.7 15.9 217.2 154.9 0419 0800 50.4 756.0 895.0 118.4 15.7 217.5 154.9 0419 0900 50.4 756.0 897.0 118.7 15.9 216.8 154.9 0419 1000 50.5 756.0 897.0 118.7 16.0 217.0 154.9 0419 1100 50.5 756.0 897.0 118.7 15.9 217.7 154.9 0419 1200 50.5 755.0 898.0 118.9 15.9 219.4 154.9 0419 1300 50.5 755.0 898.0 118.9 15.8 217.7 154.9 0419 1400 50.5 754.0 897.0 119.0 15.8 218.1 154.9 0419 1500 50.5 754.0 897.0 119.0 15.8 218.4 154.9 0419 1600 50.6 753.0 894.0 118.7 15.7 218.3 154.9 0419 1700 50.6 752.0 894.0 118.9 15.7 220.1 154.9 TOTAL DISSOLVED GAS REPORT FOR THE DALLES starting at 1700 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 1700 51.0 756.0 925.0 122.4 15.3 235.6 89.0 0418 1800 51.1 755.0 927.0 122.8 15.0 240.8 89.0 0418 1900 51.1 755.0 928.0 122.9 14.9 241.8 89.0 0418 2000 51.1 755.0 928.0 122.9 14.5 241.8 89.0 0418 2100 51.1 756.0 929.0 122.9 15.0 235.2 89.0 0418 2200 51.0 756.0 929.0 122.9 15.4 211.7 89.0 0418 2300 51.1 756.0 929.0 122.9 14.9 208.4 89.0 0419 0000 51.0 756.0 930.0 123.0 14.7 208.3 89.0 0419 0100 51.1 756.0 931.0 123.1 15.7 206.5 94.0 0419 0200 51.1 756.0 931.0 123.1 15.9 186.2 94.0 0419 0300 51.1 756.0 931.0 123.1 15.9 180.5 94.0 0419 0400 51.1 756.0 930.0 123.0 16.5 180.1 94.0 0419 0500 51.1 756.0 930.0 123.0 16.6 179.5 94.0 0419 0600 51.0 756.0 928.0 122.8 16.1 180.1 94.0 0419 0700 51.0 756.0 927.0 122.6 16.5 201.6 94.0 0419 0800 51.0 757.0 926.0 122.3 17.0 191.5 94.0 0419 0900 51.0 757.0 925.0 122.2 16.6 189.7 94.0 0419 1000 51.0 756.0 924.0 122.2 15.9 205.3 94.0 0419 1100 50.9 756.0 923.0 122.1 16.5 206.7 94.0 0419 1200 51.0 756.0 923.0 122.1 16.5 206.1 94.0 0419 1300 50.9 755.0 923.0 122.3 16.4 206.5 94.0 0419 1400 50.9 754.0 921.0 122.1 16.9 206.8 94.0 0419 1500 50.9 754.0 917.0 121.6 16.1 206.9 94.0 0419 1600 51.0 753.0 914.0 121.4 16.0 206.7 94.0 0419 1700 50.9 753.0 912.0 121.1 15.3 207.1 94.0 TOTAL DISSOLVED GAS REPORT FOR 1 MILE DOWNSTREAM OF THE DALLES starting at 1700 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 1700 51.0 757.0 930.0 122.9 9.2 235.6 89.0 0418 1800 51.0 756.0 930.0 123.0 9.5 240.8 89.0 0418 1900 51.0 756.0 930.0 123.0 9.2 241.8 89.0 0418 2000 51.0 756.0 931.0 123.1 9.3 241.8 89.0 0418 2100 51.0 757.0 930.0 122.9 9.2 235.2 89.0 0418 2200 51.0 757.0 930.0 122.9 8.8 211.7 89.0 0418 2300 51.0 757.0 932.0 123.1 8.7 208.4 89.0 0419 0000 51.0 757.0 933.0 123.2 8.7 208.3 89.0 0419 0100 51.0 757.0 934.0 123.4 8.5 206.5 94.0 0419 0200 51.0 757.0 936.0 123.6 8.2 186.2 94.0 0419 0300 51.0 757.0 936.0 123.6 8.2 180.5 94.0 0419 0400 51.0 757.0 939.0 124.0 8.1 180.1 94.0 0419 0500 51.0 757.0 939.0 124.0 8.0 179.5 94.0 0419 0600 51.0 757.0 938.0 123.9 7.9 180.1 94.0 0419 0700 51.0 757.0 940.0 124.2 8.2 201.6 94.0 0419 0800 51.0 758.0 940.0 124.0 7.9 191.5 94.0 0419 0900 51.0 758.0 939.0 123.9 7.8 189.7 94.0 0419 1000 51.0 757.0 941.0 124.3 8.1 205.3 94.0 0419 1100 51.1 757.0 940.0 124.2 8.1 206.7 94.0 0419 1200 51.0 757.0 940.0 124.2 7.9 206.1 94.0 0419 1300 51.1 756.0 939.0 124.2 7.9 206.5 94.0 0419 1400 51.1 756.0 939.0 124.2 7.9 206.8 94.0 0419 1500 51.1 755.0 939.0 124.4 8.0 206.9 94.0 0419 1600 51.1 754.0 938.0 124.4 7.9 206.7 94.0 0419 1700 51.0 754.0 936.0 124.1 7.8 207.1 94.0 TOTAL DISSOLVED GAS REPORT FOR BONNEVILLE starting at 1700 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 1700 51.4 756.0 883.0 116.8 11.4 243.8 149.6 0418 1800 51.5 755.0 885.0 117.2 9.5 249.1 149.5 0418 1900 51.4 755.0 886.0 117.4 9.7 249.7 149.4 0418 2000 51.4 755.0 888.0 117.6 9.2 249.4 149.4 0418 2100 51.4 755.0 889.0 117.7 9.1 250.0 149.5 0418 2200 51.3 755.0 891.0 118.0 9.8 250.0 149.4 0418 2300 51.3 755.0 894.0 118.4 9.4 250.3 149.4 0419 0000 51.2 755.0 896.0 118.7 10.4 222.5 149.8 0419 0100 51.2 755.0 897.0 118.8 11.9 209.5 150.0 0419 0200 51.2 755.0 898.0 118.9 11.3 209.5 150.1 0419 0300 51.2 755.0 899.0 119.1 11.5 209.1 150.0 0419 0400 51.2 755.0 898.0 118.9 10.3 209.0 149.8 0419 0500 51.2 754.0 898.0 119.1 11.3 208.5 149.7 0419 0600 51.2 754.0 897.0 119.0 11.2 208.6 149.6 0419 0700 51.2 755.0 896.0 118.7 11.3 217.6 149.2 0419 0800 51.2 755.0 895.0 118.5 8.9 216.3 149.0 0419 0900 51.2 755.0 896.0 118.7 9.9 212.6 149.2 0419 1000 51.2 754.0 895.0 118.7 9.5 216.6 149.0 0419 1100 51.2 754.0 894.0 118.6 10.4 216.5 148.8 0419 1200 51.2 754.0 893.0 118.4 10.4 217.3 149.6 0419 1300 51.3 754.0 893.0 118.4 10.4 216.7 149.4 0419 1400 51.4 753.0 893.0 118.6 8.0 216.8 149.3 0419 1500 51.4 753.0 892.0 118.5 9.7 216.9 149.2 0419 1600 51.5 753.0 892.0 118.5 10.0 216.7 149.2 0419 1700 51.5 753.0 894.0 118.7 9.3 216.7 149.2 TOTAL DISSOLVED GAS REPORT FOR WARRENDALE starting at 1700 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 1700 51.6 759.0 928.0 122.3 7.9 243.8 149.6 0418 1800 51.7 759.0 927.0 122.1 7.7 249.1 149.5 0418 1900 51.7 758.0 926.0 122.2 7.8 249.7 149.4 0418 2000 51.6 758.0 925.0 122.0 7.8 249.4 149.4 0418 2100 51.6 759.0 924.0 121.7 7.8 250.0 149.5 0418 2200 51.6 759.0 923.0 121.6 7.8 250.0 149.4 0418 2300 51.5 759.0 922.0 121.5 7.8 250.3 149.4 0419 0000 51.5 759.0 923.0 121.6 7.8 222.5 149.8 0419 0100 51.4 759.0 920.0 121.2 7.8 209.5 150.0 0419 0200 51.4 758.0 921.0 121.5 7.8 209.5 150.1 0419 0300 51.3 758.0 921.0 121.5 7.8 209.1 150.0 0419 0400 51.3 758.0 921.0 121.5 7.8 209.0 149.8 0419 0500 51.2 758.0 920.0 121.4 7.8 208.5 149.7 0419 0600 51.3 758.0 920.0 121.4 7.8 208.6 149.6 0419 0700 51.3 758.0 920.0 121.4 7.8 217.6 149.2 0419 0800 51.3 758.0 920.0 121.4 7.8 216.3 149.0 0419 0900 51.3 758.0 921.0 121.5 7.8 212.6 149.2 0419 1000 51.3 757.0 923.0 121.9 7.7 216.6 149.0 0419 1100 51.5 758.0 923.0 121.8 7.7 216.5 148.8 0419 1200 51.4 758.0 925.0 122.0 7.8 217.3 149.6 0419 1300 51.5 757.0 925.0 122.2 7.7 216.7 149.4 0419 1400 51.6 757.0 926.0 122.3 7.7 216.8 149.3 0419 1500 51.7 757.0 927.0 122.5 7.7 216.9 149.2 0419 1600 51.7 757.0 928.0 122.6 7.7 216.7 149.2 0419 1700 51.8 756.0 928.0 122.8 7.7 216.7 149.2 TOTAL DISSOLVED GAS REPORT FOR CAMAS/WASHOUGAL starting at 1700 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 1700 + + + + + 243.8 149.6 0418 1800 + + + + + 249.1 149.5 0418 1900 + + + + + 249.7 149.4 0418 2000 + + + + + 249.4 149.4 0418 2100 + + + + + 250.0 149.5 0418 2200 + + + + + 250.0 149.4 0418 2300 + + + + + 250.3 149.4 0419 0000 + + + + + 222.5 149.8 0419 0100 + + + + + 209.5 150.0 0419 0200 + + + + + 209.5 150.1 0419 0300 + + + + + 209.1 150.0 0419 0400 + + + + + 209.0 149.8 0419 0500 + + + + + 208.5 149.7 0419 0600 + + + + + 208.6 149.6 0419 0700 + + + + + 217.6 149.2 0419 0800 + + + + + 216.3 149.0 0419 0900 + + + + + 212.6 149.2 0419 1000 + + + + + 216.6 149.0 0419 1100 + + + + + 216.5 148.8 0419 1200 + + + + + 217.3 149.6 0419 1300 + + + + + 216.7 149.4 0419 1400 + + + + + 216.8 149.3 0419 1500 + + + + + 216.9 149.2 0419 1600 + + + + + 216.7 149.2 0419 1700 + + + + + 216.7 149.2 TOTAL DISSOLVED GAS REPORT FOR CASCADE ISLAND, WA starting at 1700 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 1700 51.4 758.0 918.0 121.1 30.6 243.8 149.6 0418 1800 51.4 757.0 919.0 121.4 30.7 249.1 149.5 0418 1900 51.4 757.0 918.0 121.3 30.8 249.7 149.4 0418 2000 51.3 757.0 918.0 121.3 30.7 249.4 149.4 0418 2100 51.3 757.0 919.0 121.4 30.6 250.0 149.5 0418 2200 51.2 757.0 919.0 121.4 30.8 250.0 149.4 0418 2300 51.2 758.0 920.0 121.4 30.3 250.3 149.4 0419 0000 51.2 757.0 917.0 121.1 29.6 222.5 149.8 0419 0100 51.2 758.0 919.0 121.2 29.1 209.5 150.0 0419 0200 51.1 757.0 919.0 121.4 29.2 209.5 150.1 0419 0300 51.1 757.0 915.0 120.9 29.0 209.1 150.0 0419 0400 51.1 757.0 912.0 120.5 28.6 209.0 149.8 0419 0500 51.1 757.0 912.0 120.5 28.9 208.5 149.7 0419 0600 51.1 757.0 912.0 120.5 28.8 208.6 149.6 0419 0700 51.1 757.0 917.0 121.1 29.1 217.6 149.2 0419 0800 51.1 757.0 916.0 121.0 28.9 216.3 149.0 0419 0900 51.1 757.0 914.0 120.7 29.2 212.6 149.2 0419 1000 51.1 756.0 913.0 120.8 29.1 216.6 149.0 0419 1100 51.1 756.0 915.0 121.0 29.0 216.5 148.8 0419 1200 51.2 756.0 918.0 121.4 29.0 217.3 149.6 0419 1300 51.2 756.0 918.0 121.4 29.2 216.7 149.4 0419 1400 51.3 756.0 918.0 121.4 29.0 216.8 149.3 0419 1500 51.4 756.0 915.0 121.0 28.9 216.9 149.2 0419 1600 51.4 755.0 916.0 121.3 29.0 216.7 149.2 0419 1700 51.5 755.0 918.0 121.6 28.9 216.7 149.2