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Hinckley Reservoir Water Levels

Information on this page provides current data and operating parameters related to ongoing management of Hinckley Reservoir water levels.
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2017 Water Level Data Table
Date Hinckley Reservoir Elevation
(ft)
Hinckley Reservoir
Comparison to Elevation Trigger
(ft)1
Hinckley Reservoir Comparison to Normal Elevation
(ft)2
Hinckley Reservoir
Discharge
(cfs)3
2012 Operating Diagram Release
(cfs)4
Hinckley Reservoir Inflow
(cfs)
Hinckley Reservoir
30-Day Running Average Inflow
(cfs)5
Wilmurt Streamgage Flow
(cfs)6
Black Creek Flow
(cfs)
Mohawk Valley Water Authority Withdrawal
(cfs)
Delta Reservoir Elevation
(ft)
Delta Reservoir Discharge
(cfs)
Nine Mile Feeder Discharge
(cfs)
10/20 1203.2 5.2 -7.0 492 490 244 279.0 N/A N/A 27.3 543.9 268 0
10/19 1203.6 5.5 -6.6 494 490 307 277.0 N/A N/A 27.2 544.0 268 0
10/18 1203.8 5.8 -6.2 485 490 319 274.0 N/A N/A 26.6 544.1 268 0
10/17 1204.0 6.0 -5.8 487 490 298 269.0 N/A N/A 28.5 544.3 271 5
10/16 1204.2 6.2 -5.6 487 490 339 267.0 N/A N/A 28.4 544.4 274 0
10/15 1204.4 6.4 -5.4 476 480 284 263.0 N/A N/A 24.7 N/A N/A N/A
10/14 1204.7 6.4 -5.1 477 480 393 261.0 N/A N/A 26.0 N/A N/A N/A
10/13 1204.8 6.4 -5.0 484 480 444 258.0 N/A N/A 27.2 544.7 271 11
10/12 1204.9 6.4 -5.0 488 480 535 252.0 N/A N/A 27.0 544.7 277 11
10/11 1204.8 6.2 -5.1 488 480 622 246.0 N/A N/A 26.9 544.7 271 11
10/10 1204.7 5.8 -5.3 486 480 900 239.0 N/A N/A 27.1 544.7 274 11
10/09 1204.3 5.2 -5.7 483 480 508 226.0 N/A N/A 27.6 544.4 271 11
10/08 1204.3 5.0 -5.8 484 490 315 230.0 N/A N/A 27.0 544.4 268 11
10/07 1204.5 5.1 -5.5 488 490 231 246.0 N/A N/A 26.7 544.5 268 11
10/06 1204.8 5.2 -5.2 491 490 276 275.0 N/A N/A 27.1 544.7 268 11
NY Power Authority Comments : On October 6, the Hinckley 30 day low inflow trigger became ACTIVATED. Routine Communication Protocols are in effect.
10/05 1205.1 5.3 -5.1 495 490 211 309.0 N/A N/A 30.1 544.8 268 11
10/04 1205.4 5.5 -4.9 507 510 154 328.0 N/A N/A 29.0 544.9 268 11
10/03 1205.8 5.7 -4.6 509 510 151 341.0 N/A N/A 28.1 545.1 268 11
10/02 1206.2 6.0 -4.2 514 510 176 347.0 N/A N/A 27.1 545.3 315 11
10/01 1206.6 6.1 -3.9 548 550 146 346.0 N/A N/A 27.2 545.5 328 11
09/30 1207.1 6.5 -3.5 545 550 225 346.0 N/A N/A 28.1 545.7 328 11
09/29 1207.4 6.6 -3.3 546 550 129 345.0 N/A N/A 28.7 545.9 331 11
09/28 1207.9 6.9 -2.7 553 550 131 349.0 N/A N/A 30.6 546.1 331 12
09/27 1208.4 7.2 -2.1 600 600 124 353.0 N/A N/A 30.7 546.4 331 12
09/26 1208.9 7.5 -1.6 606 600 124 358.0 N/A N/A 30.2 546.6 331 12
09/25 1209.4 7.9 -1.2 607 600 169 365.0 N/A N/A 27.3 546.8 331 12
09/24 1209.9 8.2 -0.8 639 640 171 376.0 N/A N/A 30.0 547.0 335 10
09/23 1210.4 8.5 -0.4 637 640 138 389.0 N/A N/A 29.0 547.2 338 10
09/22 1210.9 8.8 0.2 642 640 163 415.0 N/A N/A 30.8 547.4 271 10
09/21 1211.4 9.2 0.7 644 640 159 457.0 N/A N/A 30.1 547.6 271 10
09/20 1211.8 9.4 1.2 701 700 185 469.0 N/A N/A 28.6 547.8 271 10
09/19 1212.4 9.8 1.8 711 700 215 478.0 N/A N/A 29.0 547.9 271 10
09/18 1212.8 10.0 2.2 700 700 181 496.0 N/A N/A 29.2 548.1 271 10
09/17 1213.4 10.5 2.7 722 720 214 524.0 N/A N/A 29.7 548.2 271 10
09/16 1213.8 10.8 3.2 721 720 234 531.0 N/A N/A 28.9 548.4 271 11
09/15 1214.3 11.0 3.5 721 720 229 533.0 N/A N/A 28.6 548.5 271 11
09/14 1214.8 11.3 3.9 721 720 280 533.0 N/A N/A 28.8 548.6 271 11
09/13 1215.2 11.6 4.3 691 690 274 531.0 N/A N/A 26.2 N/A N/A N/A
09/12 1215.6 11.8 4.7 690 690 361 531.0 N/A N/A 26.1 548.9 271 12
09/11 1215.9 11.9 4.8 692 690 410 531.0 N/A N/A 27.7 549.0 271 11
09/10 1216.2 12.0 4.9 593 590 498 532.0 N/A N/A N/A 549.2 271 10
09/09 1216.3 11.9 4.8 593 590 649 527.0 N/A N/A N/A 549.3 271 11
09/08 1216.2 11.7 4.4 598 590 795 519.0 N/A N/A N/A 549.4 271 11
09/07 1216.1 11.4 4.1 596 590 1102 511.0 N/A N/A 28.0 549.4 201 11
09/06 1215.7 10.8 3.5 640 630 1280 496.0 N/A N/A 27.3 549.4 204 11
09/05 1215.1 10.0 2.7 634 630 800 488.0 N/A N/A 26.8 549.2 201 11
09/04 1215.0 9.9 2.5 635 630 525 533.0 N/A N/A 26.0 549.1 199 11
09/03 1215.1 9.7 2.4 717 720 328 583.0 N/A N/A 26.6 549.1 199 11
09/02 1215.5 9.9 2.6 720 720 159 583.0 N/A N/A 27.2 549.2 199 11
09/01 1216.0 10.2 3.0 766 720 142 585.0 N/A N/A 28.6 549.3 199 11
08/31 1216.6 10.7 3.6 760 720 193 589.0 N/A N/A 29.0 549.4 199 11
NY Power Authority Comments : Canal Corporation and Brookfield agreed to schedule 39 cfs above the 2012 Operating Diagram discharge on Aug 31 and Sept 1 to compensate for a net under-discharge of 78 cfsd that occurred from Aug 12-23.
08/30 1217.1 11.0 4.0 760 750 261 592.0 N/A N/A 27.1 549.4 199 11
08/29 1217.6 11.3 4.4 752 750 231 595.0 N/A N/A 28.2 549.5 199 11
08/28 1218.0 11.5 4.7 757 750 290 596.0 N/A N/A 30.0 549.6 201 11
08/27 1218.4 11.8 4.8 691 690 321 602.0 N/A N/A 27.8 549.7 201 11
08/26 1218.8 12.0 5.0 691 690 497 612.0 N/A N/A 26.7 549.8 201 11
08/25 1219.0 12.0 4.9 690 690 574 613.0 N/A N/A 27.2 549.8 201 10
08/24 1219.1 12.0 4.8 694 690 907 614.0 N/A N/A 27.6 549.9 204 11
08/23 1219.0 11.6 4.6 693 680 1439 602.0 N/A N/A 29.6 549.8 212 10
08/22 1218.4 10.9 3.9 695 680 522 571.0 N/A N/A 28.4 549.4 201 10
08/21 1218.5 10.8 3.8 703 680 440 570.0 N/A N/A 25.5 549.4 201 11
08/20 1218.8 10.9 3.9 774 750 748 571.0 N/A N/A 26.3 549.5 201 11
08/19 1218.8 10.8 3.8 775 750 1017 564.0 N/A N/A N/A 549.5 204 11
08/18 1218.7 10.4 3.3 771 750 448 554.0 N/A N/A N/A 549.4 201 11
08/17 1219.0 10.6 3.4 766 750 274 578.0 N/A N/A N/A 549.5 233 12
08/16 1219.4 10.8 3.7 773 880 225 619.0 N/A N/A 30.0 549.6 233 12
08/15 1219.9 11.2 4.1 836 880 229 637.0 N/A N/A 28.4 549.6 233 12
08/14 1220.4 11.5 4.4 849 880 266 657.0 N/A N/A 27.9 549.7 233 12
08/13 1220.9 11.8 4.8 848 830 378 680.0 N/A N/A 28.0 549.8 233 12
08/12 1221.4 12.0 5.0 778 830 436 713.0 N/A N/A 28.9 549.9 233 12
08/11 1221.6 12.1 5.3 831 830 361 742.0 N/A N/A 31.0 550.0 233 12
08/10 1222.0 12.5 5.7 830 830 388 744.0 N/A N/A 31.3 550.0 233 12
08/09 1222.4 12.6 5.9 555 550 557 747.0 N/A N/A 30.3 550.1 244 11
08/08 1222.4 12.4 5.7 552 550 649 744.0 N/A N/A 28.6 550.2 280 11
08/07 1222.4 12.2 5.6 551 550 1061 744.0 N/A N/A 28.7 550.3 328 12
08/06 1222.0 11.6 5.0 581 570 2146 733.0 N/A N/A N/A 550.4 423 12
08/05 1220.8 10.3 3.7 577 570 2029 678.0 N/A N/A N/A 550.5 471 12
08/04 1219.7 9.0 2.5 576 570 307 631.0 N/A N/A N/A 550.2 172 12
08/03 1219.9 9.0 2.5 579 570 217 649.0 N/A N/A N/A 550.2 201 12
08/02 1220.2 9.1 2.7 597 590 263 684.0 N/A N/A 30.4 N/A N/A N/A
08/01 1220.5 9.3 2.8 596 590 291 770.0 N/A N/A 30.5 N/A N/A N/A
07/31 1220.8 9.4 3.1 594 590 350 951.0 N/A N/A 29.3 N/A N/A N/A
07/30 1221.0 9.4 3.1 648 650 277 1044.0 N/A N/A 29.5 N/A N/A N/A
07/29 1221.3 9.5 3.3 656 650 458 1057.0 N/A N/A 29.3 N/A N/A N/A
07/28 1221.5 9.6 3.4 657 650 628 1060.0 N/A N/A 29.8 N/A N/A N/A
07/27 1221.6 9.5 3.3 656 650 533 1062.0 N/A N/A 29.4 N/A N/A N/A
07/26 1221.7 9.4 3.3 951 900 576 1067.0 N/A N/A 29.0 N/A N/A N/A
07/25 1222.0 9.5 3.4 978 900 569 1068.0 N/A N/A 28.7 N/A N/A N/A
07/24 1222.4 9.7 3.6 913 900 500 1081.0 N/A N/A 28.6 N/A N/A N/A
07/23 1222.7 9.9 3.8 670 660 480 1095.0 N/A N/A 29.3 N/A N/A N/A
07/22 1222.9 9.9 3.9 666 660 475 1098.0 N/A N/A 31.6 N/A N/A N/A
07/21 1223.0 9.8 3.9 627 660 533 1105.0 N/A N/A 30.3 N/A N/A N/A
07/20 1223.1 9.7 3.9 656 660 722 1119.0 N/A N/A 30.7 N/A N/A N/A
07/19 1223.1 9.6 3.7 590 570 1183 1136.0 N/A N/A 39.4 N/A N/A N/A
07/18 1222.7 9.0 3.1 579 570 1503 1133.0 N/A N/A 50.6 N/A N/A N/A
07/17 1222.0 8.2 2.3 575 570 767 1104.0 261 430 50.0 N/A N/A N/A
07/16 1221.9 7.8 2.0 414 600 825 1100.0 143 506 49.6 N/A N/A N/A
NY Power Authority Comments : On July 15 and 16, a 375 cfsd discharge below the Operating Diagram was used to offset the 428 cfsd discharge above the Operating Diagram on July 8, 10-12,
07/15 1221.6 7.4 1.6 411 600 945 1092.0 195 629 50.6 N/A N/A N/A
07/14 1221.2 6.8 1.1 607 600 1384 1076.0 289 821 49.6 N/A N/A N/A
07/13 1220.6 6.0 0.4 646 600 1293 1042.0 347 847 49.8 N/A N/A N/A
07/12 1220.1 5.3 -0.1 1505 1400 431 1017.0 N/A 317 49.9 N/A N/A N/A
NY Power Authority Comments : The release for the last three days was 671 cfsd above the Operating Diagram flow of 1400 cfs, because NYPA inadvertently continued the previous OD release of 1680 cfs through the Jarvis hydropower plant. NYPA has taken corrective action to reduce the likelihood of this happening again. In addition, makeup water is scheduled for July 15-16, to make the Operating Diagram flow whole over this past week.
07/11 1221.0 6.1 0.7 1682 1400 464 1023.0 N/A 285 50.0 N/A N/A N/A
07/10 1222.0 6.9 1.5 1684 1400 476 1035.0 N/A 322 50.2 N/A N/A N/A
07/09 1222.9 7.6 2.3 1685 1680 652 1048.0 152 404 50.6 N/A N/A N/A
07/08 1223.7 8.2 2.9 1437 1680 718 1069.0 159 393 46.4 N/A N/A N/A
NY Power Authority Comments : The release was 243 cfs below the Operating Diagram flow. The under discharge was related to an unplanned transmission outage.
07/07 1224.3 8.7 3.3 1678 1680 519 1112.0 104 373 51.7 N/A N/A N/A
07/06 1225.2 9.4 4.1 868 620 600 1227.0 106 447 54.0 N/A N/A N/A
07/05 1225.4 9.4 4.2 1195 620 854 1322.0 138 607 53.0 550.5 356 12
07/04 1225.7 9.5 4.4 2010 620 1265 1337.0 237 921 47.9 550.7 492 13
NY Power Authority Comments : A MVWA water main developed a leak today. The MVWA withdrawal is running about 50 cfs, which is about 20 cfs higher than normal. Work is proceeding to repair the main.
07/03 1226.3 9.9 4.9 3269 620 2836 1316.0 735 1580 29.5 551.2 835 12
07/02 1226.6 10.1 5.0 2000 620 5728 1247.0 1550 3790 27.4 551.2 1330 12
07/01 1223.9 7.2 2.2 629 620 3128 1091.0 644 2590 30.0 550.6 427 12
06/30 1222.0 5.1 0.1 620 620 686 1032.0 N/A 441 29.3 550.4 250 12
06/29 1222.0 4.9 0.0 606 620 547 1069.0 N/A 377 28.4 550.4 225 12
06/28 1222.1 4.9 -0.1 603 590 670 1098.0 N/A 472 31.4 550.4 230 12
06/27 1222.1 4.7 -0.1 597 590 681 1102.0 N/A 433 29.6 550.4 217 12
06/26 1222.0 4.5 -0.2 599 590 634 1098.0 N/A 442 30.2 550.4 217 12
06/25 1222.0 4.2 -0.4 595 580 945 1094.0 115 628 29.4 548.9 228 0
06/24 1221.8 3.9 -0.7 592 580 909 1081.0 138 772 29.9 548.9 241 0
06/23 1221.6 3.4 -1.2 590 580 594 1071.0 N/A 379 29.8 N/A N/A N/A
06/22 1221.6 3.3 -1.1 589 580 686 1076.0 N/A 474 30.3 N/A N/A N/A
06/21 1221.5 3.0 -1.2 591 580 939 1083.0 111 667 29.9 N/A N/A N/A
06/20 1221.3 2.7 -1.6 594 580 1219 1075.0 169 822 28.9 N/A N/A N/A
06/19 1220.8 2.0 -2.2 589 580 1117 1053.0 159 847 31.2 N/A N/A N/A
06/18 1220.4 1.5 -2.7 934 930 630 1040.0 N/A 329 30.0 N/A N/A N/A
06/17 1220.7 1.5 -2.6 937 930 632 1044.0 N/A 408 30.5 N/A N/A N/A
06/16 1221.0 1.6 -2.3 936 930 598 1048.0 N/A 322 29.0 N/A N/A N/A
06/15 1221.3 1.8 -2.0 944 930 447 1056.0 N/A N/A 32.0 N/A N/A N/A
06/14 1221.7 2.0 -1.6 1651 1660 387 1076.0 N/A 292 N/A N/A N/A N/A
06/13 1222.7 2.8 -0.7 1666 1660 540 1103.0 N/A 345 N/A N/A N/A N/A
06/12 1223.6 3.5 0.1 1658 1660 613 1126.0 N/A 421 N/A N/A N/A N/A
06/11 1224.4 4.2 0.8 1396 1400 803 1137.0 N/A 535 29.3 N/A N/A N/A
06/10 1224.8 4.5 1.2 1443 1400 878 1144.0 126 715 29.1 N/A N/A N/A
06/09 1225.3 4.7 1.5 1862 1400 1292 1155.0 184 1000 29.3 N/A N/A N/A
06/08 1225.7 4.9 1.9 2863 1400 1983 1161.0 307 1470 28.8 N/A N/A N/A
06/07 1226.4 5.5 2.5 3188 1070 3970 1153.0 734 2840 29.0 N/A N/A N/A
06/06 1225.8 4.7 1.8 1258 1070 3459 1100.0 584 2880 28.8 N/A N/A N/A
06/05 1224.3 3.0 0.2 1079 1070 1311 1086.0 118 1150 N/A N/A N/A N/A
06/04 1224.1 2.6 -0.1 610 600 645 1161.0 N/A 453 29.3 N/A N/A N/A
06/03 1224.1 2.5 -0.2 609 600 756 1212.0 N/A 572 29.8 N/A N/A N/A
06/02 1224.0 2.2 -0.2 607 600 1034 1248.0 122 769 28.6 550.8 655 12
06/01 1223.7 1.7 -0.5 604 600 1374 1294.0 183 1090 30.2 N/A N/A N/A
NY Power Authority Comments : The Operating Diagram discharge resumed today, June 1.
05/31 1223.2 1.1 -1.1 509 650 1788 1324.0 259 1250 28.8 N/A N/A N/A
05/30 1222.2 0.2 -2.0 532 650 1414 1313.0 279 891 28.9 N/A N/A N/A
NY Power Authority Comments : On May 30, the water level rose above the low elevation trigger. The low elevation trigger is DE-ACTIVATED.
05/29 1221.5 -0.5 -2.7 517 650 800 1296.0 162 489 27.8 N/A N/A N/A
05/28 1221.4 -0.7 -3.0 518 690 550 1303.0 N/A 328 29.4 N/A N/A N/A
05/27 1221.4 -0.6 -3.0 524 690 525 1323.0 N/A 359 28.6 N/A N/A N/A
05/26 1221.4 -0.6 -2.9 523 690 555 1345.0 N/A 374 29.9 N/A N/A N/A
05/25 1221.4 -0.6 -3.0 519 690 614 1367.0 N/A 392 29.2 N/A N/A N/A
NY Power Authority Comments : Canal Corp authorized a reduction in flow to achieve a reservoir elevation of about 1222' for June 1. The flow reduction began on May 25 and continued through May 31.
05/24 1221.3 -0.7 -3.1 874 870 750 1389.0 N/A 469 29.2 N/A N/A N/A
05/23 1221.4 -0.5 -2.9 874 870 875 1413.0 102 585 29.4 N/A N/A N/A
05/22 1221.5 -0.5 -2.9 877 870 696 1451.0 N/A 457 29.6 N/A N/A N/A
05/21 1221.6 -0.4 -2.9 1037 1030 566 1532.0 N/A 376 30.7 N/A N/A N/A
NY Power Authority Comments : As of May 21, the Hinckley low elevation trigger became ACTIVATED. Routine Communication Protocols are in effect.
05/20 1222.0 0.0 -2.5 1036 1030 720 1621.0 N/A 436 30.2 N/A N/A N/A
05/19 1222.3 0.3 -2.2 1035 1030 749 1680.0 N/A 493 31.4 N/A N/A N/A
05/18 1222.5 0.5 -2.0 1045 1030 757 1731.0 550 97 30.4 550.8 349 0
05/17 1222.8 0.8 -1.7 1404 1400 842 1818.0 658 113 29.7 550.9 409 0
05/16 1223.2 1.2 -1.3 1403 1400 1047 1936.0 789 136 29.1 550.9 493 0
05/15 1223.4 1.4 -1.2 1405 1400 1210 2015.0 902 173 28.7 551.0 540 0
05/14 1223.6 1.6 -1.0 1695 1700 1205 2060.0 925 196 28.0 550.9 486 0
05/13 1224.0 2.0 -0.5 1715 1700 957 2125.0 697 152 27.7 550.8 413 0
05/12 1224.6 2.6 0.2 1573 1700 1007 2231.0 757 160 29.6 550.9 453 0
05/11 1225.0 3.0 0.6 1484 1700 1216 2401.0 918 197 29.2 551.0 563 0
NY Power Authority Comments : NYPA unintentionally under-discharged 343 cfsd (revised from 415 cfsd) on May 11 and 12.
05/10 1225.3 3.2 0.9 1739 1400 1469 2526.0 1090 241 28.9 551.1 717 0
05/09 1225.5 3.5 1.3 2143 1400 1737 2567.0 1280 318 28.8 551.3 945 0
05/08 1225.8 3.8 1.5 2707 1400 2401 2601.0 1640 469 29.6 551.5 1290 0
05/07 1226.0 4.1 1.8 2978 1400 3010 2699.0 2040 674 28.5 551.8 1720 0
05/06 1226.0 4.0 1.6 2305 1400 3581 2852.0 2520 844 26.9 551.5 1470 0
05/05 1225.1 3.2 0.8 1408 1400 2171 2923.0 1580 482 30.0 551.0 775 0
05/04 1224.6 2.6 0.2 1401 1400 1845 3156.0 1300 297 28.6 550.9 587 0
05/03 1224.3 2.3 -0.1 1455 1400 2403 3263.0 1750 425 30.1 551.0 845 0
05/02 1223.6 1.6 -0.7 1420 1400 2260 3243.0 1850 433 N/A 550.9 788 0
05/01 1223.0 1.0 -1.1 1447 1400 1479 3224.0 673 116 29.1 550.5 359 0
04/30 1223.4 N/A -0.6 1448 1440 890 3234.0 646 109 28.2 550.5 340 0
04/29 1223.8 N/A 0.0 1448 1440 1017 3250.0 752 131 30.0 550.6 367 0
04/28 1224.1 N/A 0.5 1450 1440 1148 3266.0 859 153 29.6 550.6 376 0
04/27 1224.4 N/A 1.0 1458 1440 1188 3275.0 901 151 30.6 550.6 364 0
04/26 1224.6 N/A 1.4 1453 1680 1215 3265.0 975 179 28.2 550.6 388 0
NY Power Authority Comments : Jarvis under-discharged 227 cfs on April 26, because NYPA applied the upcoming scheduled Operating Diagram release a day earlier than planned. Canal Corp, NYPA and Brookfield Power agreed not to make up this water with an over-diversion, because it is a relatively small amount.
04/25 1224.8 N/A 2.0 1691 1680 1286 3247.0 1030 190 30.1 550.6 403 0
04/24 1225.1 N/A 2.7 1922 1680 1446 3224.0 1240 223 30.9 550.7 443 0
04/23 1225.5 N/A 3.6 2613 1800 2033 3192.0 1650 308 28.3 550.7 484 0
04/22 1225.9 N/A 4.9 3197 1800 3122 3137.0 2430 502 27.5 550.7 458 0
04/21 1226.0 N/A 5.7 2703 1800 3237 3046.0 2770 534 29.7 550.4 882 0
04/20 1225.6 N/A 5.8 2430 1800 2490 2953.0 2020 362 29.3 550.7 1200 0
04/19 1225.6 N/A 6.4 2989 1800 2273 2888.0 1870 262 29.0 550.8 751 0
04/18 1226.1 N/A 7.3 3662 1800 3383 2828.0 2660 327 29.6 550.9 441 0
04/17 1226.4 N/A 8.2 3899 1800 4368 2736.0 3830 448 29.0 550.9 499 0
04/16 1226.0 N/A 8.7 2970 1800 3403 2607.0 3140 411 29.8 551.0 505 0
04/15 1225.7 N/A 9.3 2919 1800 2574 2515.0 2210 384 31.1 550.9 537 0
04/14 1226.0 N/A 10.4 3708 1800 3157 2451.0 2440 498 30.5 551.0 614 0
04/13 1226.4 N/A 11.6 4868 1800 4141 2367.0 3150 726 29.2 551.1 737 0
04/12 1227.0 N/A 12.8 5653 1400 6092 2254.0 4710 989 29.8 551.2 869 0
NY Power Authority Comments : The Jarvis discharge returned to the Operating Diagram discharge of 1400 cfs at midnight tonight. The over-discharge to reduce the flood risk is completed.
04/11 1226.7 N/A 13.2 3733 1400 4985 2075.0 4140 895 31.6 551.2 924 0
04/10 1225.8 N/A 13.0 2657 1400 2684 1933.0 2190 606 30.2 551.3 1020 0
04/09 1225.8 N/A 13.5 3235 1400 2754 1875.0 1870 628 30.6 551.5 1330 0
04/08 1226.2 N/A 14.5 3817 1400 5358 1837.0 2940 1080 29.3 551.9 2210 0
04/07 1225.1 N/A 14.2 2516 1400 7604 1737.0 5470 1530 31.0 552.6 3470 0
NY Power Authority Comments : The Hinckley release through Jarvis was reduced to 1800 cfs at about 11am, because of the reduced flood risk.
04/06 1221.2 N/A 11.1 3307 1400 5691 1547.0 3650 1210 30.2 551.8 1990 0
04/05 1219.4 N/A 10.2 3232 1400 9158 1396.0 5550 1830 30.2 552.3 2980 0
04/04 1214.3 N/A 6.1 2454 1400 5080 1127.0 3800 1230 30.2 551.5 2190 0
NY Power Authority Comments : The Canal Corporation, with input from NYPA and Brookfield Power, authorized a maximum discharge from all Jarvis outflow devices, in anticipation of a major flood event unfolding. The maximum discharge of 3100 cfs was achieved at 12:15pm.
04/03 1211.9 N/A 4.8 1558 1400 1792 998.0 971 512 30.8 551.0 1340 0
NY Power Authority Comments : The Canal Corporation authorized an increase in the turbine flow from 1400 to 1800 cfs in anticipation of a major flood event unfolding. The discharge of 1800 cfs was achieved at 15:46.
04/02 1211.7 N/A 5.5 1429 1400 1686 1005.0 810 530 28.9 550.5 1110 0
04/01 1211.5 N/A 6.2 1430 1400 1789 1068.0 797 656 29.3 550.4 1010 0
03/31 1211.2 N/A 6.8 1428 1400 1375 1213.0 807 293 30.2 549.6 570 0
03/30 1211.3 N/A 7.8 1427 1400 1471 1265.0 956 294 30.5 549.4 535 0
03/29 1211.2 N/A 8.6 1424 1400 1422 1303.0 1090 336 N/A 549.2 552 0
03/28 1211.3 N/A 9.4 1419 1400 904 1419.0 677 252 31.0 548.8 750 0
03/27 1211.8 N/A 10.8 1419 1400 663 1697.0 462 196 29.3 548.8 868 0
03/26 1212.5 N/A 11.9 1415 1400 594 1838.0 455 191 30.2 549.1 905 0
03/25 1213.3 N/A 13.3 1417 1400 500 1880.0 348 125 30.4 549.5 903 0
03/24 1214.1 N/A 14.1 1419 1400 373 1890.0 303 100 29.9 549.8 654 0
03/23 1215.1 N/A 15.2 1416 1400 406 1893.0 272 92 30.9 550.0 424 0
03/22 1216.0 N/A 16.3 1413 1400 441 1897.0 287 91 30.8 550.1 376 0
03/21 1216.9 N/A 17.3 1405 1400 533 1902.0 315 95 29.3 550.1 277 0
03/20 1217.6 N/A 18.3 1409 1400 464 1899.0 342 97 30.4 550.1 277 0
03/19 1218.4 N/A 18.9 1413 1400 633 1899.0 372 101 29.0 550.1 277 0
03/18 1219.1 N/A 19.8 1415 1400 504 1891.0 405 109 31.1 550.1 278 0
03/17 1219.9 N/A 20.7 1419 1400 648 1893.0 460 123 30.6 550.1 281 0
03/16 1220.5 N/A 21.4 1422 1400 632 1894.0 534 149 27.2 550.1 300 0
03/15 1221.1 N/A 22.1 1424 1400 633 1896.0 494 173 28.4 550.2 321 0
03/14 1221.8 N/A 23.0 1423 1400 751 1902.0 351 165 29.4 550.2 345 0
03/13 1222.3 N/A 23.6 1422 1400 746 1910.0 399 145 31.5 550.2 357 0
03/12 1222.9 N/A 24.3 1608 1400 718 1921.0 471 152 33.0 550.3 425 0
NY Power Authority Comments : Hinckley returned to the Operating Diagram release today, as all of the water stored Jan18-Feb9 was released Feb10-Mar12.
03/11 1223.5 N/A 24.8 1817 1400 927 1948.0 604 179 30.2 550.4 571 0
03/10 1224.2 N/A 25.5 1832 1400 1639 2004.0 1020 263 31.9 550.6 715 0
03/09 1224.3 N/A 25.6 1831 1400 2347 2014.0 1570 603 33.4 550.6 779 0
03/08 1224.0 N/A 25.4 1812 1800 1901 1959.0 1480 561 31.9 550.0 458 0
03/07 1223.9 N/A 25.2 1816 1800 1150 1913.0 766 219 32.2 549.6 250 0
03/06 1224.4 N/A 25.9 1815 1800 1109 1893.0 737 211 32.5 549.4 250 0
03/05 1225.0 N/A 26.5 1947 1400 1201 1875.0 844 242 32.0 549.4 250 0
03/04 1225.5 N/A 26.7 2860 1400 2004 1853.0 1240 340 30.0 549.2 254 0
03/03 1226.2 N/A 27.1 4377 1400 3581 1809.0 2260 821 28.1 548.9 319 0
03/02 1226.8 N/A 27.4 3979 1400 6145 1711.0 4660 1330 32.6 548.2 595 0
03/01 1225.2 N/A 25.6 1792 1400 2910 1526.0 2230 669 32.7 546.4 752 0
02/28 1224.4 N/A 24.6 1842 1400 2621 1451.0 1780 659 30.6 546.2 800 0
02/27 1223.8 N/A 23.9 1870 1400 4900 1391.0 2930 1320 30.0 546.1 886 0
02/26 1221.5 N/A 21.4 1864 1400 9246 1258.0 6530 1970 29.2 545.5 912 0
02/25 1215.2 N/A 14.8 1818 1400 4885 984.0 4170 737 29.6 542.3 948 0
02/24 1212.5 N/A 11.8 1802 1400 1878 857.0 1560 269 30.6 540.6 883 0
02/23 1212.4 N/A 11.7 1808 1400 776 835.0 722 176 28.5 540.0 656 0
02/22 1213.4 N/A 12.6 1810 1400 483 858.0 481 155 31.1 539.9 505 0
02/21 1214.6 N/A 13.5 1822 1400 530 885.0 511 151 29.1 540.1 697 0
02/20 1215.8 N/A 14.2 1815 1400 592 898.0 527 150 29.1 540.4 644 0
02/19 1216.8 N/A 15.0 1822 1400 426 906.0 419 149 N/A 540.4 496 0
02/18 1218.0 N/A 16.0 1814 1400 474 923.0 390 149 N/A 540.6 492 0
02/17 1219.2 N/A 17.1 1795 1400 395 937.0 405 150 N/A 540.8 494 0
02/16 1220.3 N/A 17.9 1787 1400 544 952.0 444 153 N/A 541.1 504 0
02/15 1221.3 N/A 18.6 1804 1500 696 963.0 480 157 31.2 541.1 509 0
02/14 1222.2 N/A 19.1 1820 1500 694 977.0 525 163 N/A 541.2 509 0
02/13 1223.1 N/A 19.6 1814 1500 800 1007.0 562 174 29.0 541.4 509 0
02/12 1223.9 N/A 20.1 1808 1400 1011 1063.0 676 188 29.2 541.4 509 0
02/11 1224.5 N/A 20.3 1764 1400 1058 1143.0 846 210 29.5 541.4 509 0
02/10 1225.0 N/A 20.4 1931 1400 1521 1135.0 1110 275 30.1 541.3 509 0
02/09 1225.3 N/A 20.3 1384 1400 2604 1104.0 1760 476 29.6 541.1 516 0
NY Power Authority Comments : Canal Corporation, with agreement from Brookfield Power and NYPA, authorized a discharge of 1800 cfs, to begin at 10am today. This discharge above the Operating Diagram discharge will begin to work off the accumulated under-discharge that began January 18, 2017.
02/08 1224.4 N/A 19.0 436 1400 1949 1031.0 1470 292 30.1 539.7 570 0
02/07 1223.3 N/A 17.5 412 1400 694 979.0 339 102 30.5 539.0 504 0
02/06 1223.1 N/A 17.1 411 1400 532 971.0 308 98 29.2 539.3 614 0
02/05 1223.1 N/A 16.6 411 1400 531 971.0 299 102 30.1 539.6 696 0
02/04 1223.0 N/A 16.3 410 1400 595 980.0 297 106 30.2 540.0 696 0
02/03 1222.9 N/A 16.0 410 1400 530 991.0 299 111 29.9 540.4 764 0
02/02 1222.8 N/A 15.7 409 1400 689 999.0 302 117 30.0 540.8 812 0
02/01 1222.6 N/A 15.2 389 1400 636 998.0 309 124 30.4 541.2 812 0
01/31 1222.4 N/A 14.8 404 1400 586 996.0 331 133 29.3 541.6 812 0
01/30 1222.3 N/A 14.4 392 1400 668 1003.0 455 144 31.6 542.0 812 0
01/29 1222.1 N/A 14.0 389 1080 823 1008.0 530 156 29.6 542.3 812 0
01/28 1221.8 N/A 13.5 413 1080 907 1015.0 584 173 29.3 542.6 812 0
01/27 1221.4 N/A 13.0 415 1080 1029 1027.0 654 190 31.5 542.7 812 0
01/26 1221.0 N/A 12.4 411 1080 1082 1053.0 649 211 29.5 542.6 812 0
01/25 1220.4 N/A 11.8 407 1030 1223 1053.0 744 283 28.8 542.7 780 0
01/24 1219.8 N/A 11.1 417 1030 1463 1031.0 835 300 31.0 542.1 763 0
01/23 1219.0 N/A 10.4 412 1030 1295 1005.0 848 283 29.4 541.7 735 0
01/22 1218.3 N/A 9.7 407 1000 899 989.0 635 238 29.0 541.3 726 0
01/21 1217.9 N/A 8.9 408 1000 839 989.0 463 219 32.0 541.2 718 0
01/20 1217.5 N/A 8.4 409 1000 923 996.0 499 243 28.5 541.3 718 0
01/19 1217.1 N/A 7.8 405 1000 900 1010.0 551 244 29.0 541.1 718 0
01/18 1216.7 N/A 7.3 640 900 849 1044.0 570 229 32.3 541.0 728 0
NY Power Authority Comments : Brookfield Renewable Power requested a reduction in Hinckley release to 400 cfs to relieve an operating issue. Canal Corporation agreed to the request. Hinckley release went to 400 cfs at 11am January 18. Makeup water will be rescheduled once the operating issue is resolved.
01/17 1216.6 N/A 6.9 925 900 891 1124.0 588 219 31.3 541.1 687 0
01/16 1216.6 N/A 6.7 926 900 1092 1159.0 738 247 29.4 541.4 686 0
01/15 1216.5 N/A 6.4 911 900 1613 1134.0 1010 342 26.9 541.6 720 0
01/14 1215.9 N/A 5.5 911 900 2486 1090.0 1650 670 32.2 541.7 750 0
01/13 1214.5 N/A 3.8 913 900 3391 1015.0 2090 907 29.6 541.0 764 0
01/12 1212.3 N/A 1.4 905 900 824 915.0 837 361 28.9 539.6 754 0
01/11 1212.4 N/A 1.2 930 930 586 903.0 452 205 30.6 539.7 687 0
01/10 1212.7 N/A 1.2 929 930 423 899.0 407 N/A 30.4 539.9 681 0
01/09 1213.2 N/A 1.5 933 930 395 899.0 354 N/A 29.4 540.4 681 0
01/08 1213.7 N/A 1.8 923 930 439 901.0 358 91 27.9 540.7 681 0
01/07 1214.2 N/A 2.2 929 930 543 907.0 349 90 30.1 541.1 681 0
01/06 1214.6 N/A 2.4 930 930 788 912.0 467 118 28.9 541.4 681 0
01/05 1214.7 N/A 2.4 926 930 922 913.0 568 146 27.8 541.4 691 0
01/04 1214.7 N/A 2.4 929 930 787 911.0 569 148 30.3 540.9 702 0
01/03 1214.9 N/A 2.6 930 930 649 919.0 449 120 29.2 N/A 713 0
01/02 1215.1 N/A 2.8 931 930 593 943.0 416 101 28.0 N/A 687 0
01/01 1215.5 N/A 3.2 927 930 782 994.0 490 127 29.0 0.0 683 0

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1 The Elevation Trigger is invoked when Hinckley Reservoir elevation falls below the 10% historical low level. The elevation trigger is 1222 feet in May, 1198 feet October 15 to December 31 and linearly interpolated from 1222 feet on May 31 and 1198 feet on October 15.

2 "Normal" Hinckley Reservoir elevations for a given date are based upon the average of 59 years of daily Hinckley Reservoir elevation data (1942-1979 and 1987-2007).

3 cfs is the abbreviation for cubic feet per second.

4 The 1920 Operating Diagram establishes the rate of release of water from Hinckley Reservoir based upon varying reservoir levels throughout the year. 

5 The Inflow Trigger is invoked when the 30-day running average Hinckley Reservoir inflow is below 300 cfs.

6 The Wilmurt plus Black Creek streamflow represents 80% of the Hinckley watershed area.