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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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2018 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)
09/21 1210.1 7.9 -0.6 577 570 231 350.0 125 48 30.7 544.3 198 44
09/20 1210.5 8.1 -0.2 577 570 198 351.0 140 57 30.6 544.4 198 43
09/19 1210.9 8.3 0.3 556 560 280 352.0 177 83 30.0 544.5 198 43
09/18 1211.2 8.4 0.6 569 560 343 356.0 180 84 28.1 544.6 198 43
09/17 1211.4 8.5 0.7 551 560 220 376.0 149 47 30.9 544.6 198 43
09/16 1211.8 8.6 1.0 444 440 229 428.0 175 56 29.3 544.7 198 43
09/15 1212.0 8.7 1.2 442 440 366 440.0 223 70 30.2 544.8 198 43
09/14 1212.1 8.6 1.2 464 440 518 438.0 313 92 30.4 544.8 198 43
09/13 1212.0 8.4 1.1 445 440 835 435.0 507 146 29.7 544.9 201 44
09/12 1211.7 7.9 0.8 437 430 1734 435.0 978 351 28.3 544.9 203 43
09/11 1210.5 6.5 -0.6 432 430 1937 379.0 1210 503 28.4 544.7 214 43
09/10 1209.0 4.8 -2.3 436 430 270 317.0 87 34 27.4 544.3 198 44
09/09 1209.2 4.8 -2.3 441 440 103 312.0 79 23 28.3 544.4 198 44
09/08 1209.6 5.0 -2.2 445 440 153 312.0 93 25 28.5 544.5 201 44
09/07 1209.9 5.2 -2.1 447 440 128 310.0 113 30 30.8 544.6 201 43
09/06 1210.2 5.3 -2.0 445 440 198 310.0 106 32 29.8 544.7 201 43
09/05 1210.5 5.4 -1.9 408 420 185 308.0 111 38 29.1 544.8 201 43
09/04 1210.8 5.6 -1.8 427 420 203 307.0 133 52 28.6 544.8 201 43
09/03 1211.0 5.6 -1.7 421 420 220 309.0 144 69 28.5 544.9 201 43
09/02 1211.2 5.6 -1.7 425 420 197 311.0 123 51 26.9 544.9 201 44
09/01 1211.5 5.7 -1.5 426 420 198 314.0 140 59 27.7 545.0 201 44
08/31 1211.7 5.8 -1.3 428 420 308 316.0 191 56 28.2 545.0 201 44
08/30 1211.8 5.7 -1.3 427 420 331 310.0 229 71 32.3 545.1 201 44
08/29 1212.0 5.6 -1.3 480 420 151 304.0 79 28 31.3 545.1 201 43
NY Power Authority Comments : The Jarvis turbine tripped multiple times from August 27-29, resulting in a Jarvis discharge not as close to the 2012 Operating Diagram release as we had been accustomed to.
08/28 1212.3 5.8 -1.0 387 420 107 304.0 79 29 N/A 545.2 201 44
08/27 1212.6 6.0 -1.0 427 420 26 311.0 84 31 28.0 545.3 201 42
08/26 1213.0 6.2 -0.8 396 400 165 322.0 89 34 28.8 545.4 201 44
08/25 1213.3 6.3 -0.8 398 400 218 332.0 100 41 28.3 545.5 201 43
08/24 1213.5 6.3 -0.8 399 400 165 342.0 118 52 29.6 545.5 201 42
08/23 1213.7 6.3 -0.7 407 400 306 346.0 141 71 28.1 545.6 201 42
08/22 1213.8 6.3 -0.7 410 400 255 343.0 142 72 28.3 545.6 201 43
08/21 1214.0 6.3 -0.7 298 400 224 337.0 154 66 27.8 545.7 201 11
NY Power Authority Comments : The Canal Corporation authorized a return to the Operating Diagram discharge of 400 cfs, beginning at 4pm today.
08/20 1214.1 6.2 -0.8 256 400 416 331.0 221 97 27.3 545.7 201 11
08/19 1214.0 5.9 -1.1 256 400 943 320.0 384 220 27.7 545.7 203 11
NY Power Authority Comments : The 30day low inflow rose above the 300 cfs trigger today.
08/18 1213.4 5.2 -1.9 253 400 1758 289.0 737 656 29.2 545.6 209 11
08/17 1212.0 3.6 -3.5 249 400 593 234.0 219 169 28.2 545.2 201 11
08/16 1211.7 3.1 -4.0 250 400 310 217.0 122 68 28.7 545.2 201 11
08/15 1211.7 3.0 -4.2 249 400 434 211.0 178 153 28.1 545.2 201 12
08/14 1211.5 2.6 -4.5 248 400 817 203.0 212 289 27.8 544.9 201 12
08/13 1211.0 2.0 -5.0 248 400 79 179.0 69 16 28.3 544.8 198 11
08/12 1211.2 1.9 -5.1 248 400 78 178.0 74 18 28.1 544.8 198 11
08/11 1211.4 1.9 -4.9 249 400 104 178.0 81 17 29.6 544.9 198 12
08/10 1211.6 2.0 -4.8 249 400 103 176.0 94 19 29.4 545.0 198 11
08/09 1211.8 1.9 -4.8 250 400 103 175.0 95 20 28.7 545.1 201 12
08/08 1211.9 1.9 -4.8 250 400 129 174.0 87 25 31.3 545.1 201 12
08/07 1212.1 1.8 -4.8 281 400 133 172.0 99 27 31.5 545.2 201 11
08/06 1212.2 1.8 -4.8 223 400 164 170.0 124 35 29.7 545.3 201 11
08/05 1212.3 1.8 -4.8 251 400 259 169.0 164 48 26.7 545.4 201 12
08/04 1212.3 1.7 -4.8 251 400 259 167.0 168 49 28.1 545.4 201 12
08/03 1212.4 1.5 -5.0 251 400 285 163.0 182 50 29.1 545.5 201 11
08/02 1212.4 1.3 -5.1 251 400 285 159.0 167 50 28.2 545.5 201 11
08/01 1212.4 1.2 -5.3 252 400 115 157.0 94 34 30.3 545.5 201 12
07/31 1212.5 1.1 -5.2 252 400 155 162.0 98 36 29.0 545.6 201 12
07/30 1212.6 1.0 -5.2 252 400 155 163.0 118 49 29.6 545.6 203 12
07/29 1212.8 1.0 -5.2 253 400 313 168.0 157 84 26.6 545.7 203 11
07/28 1212.8 0.9 -5.3 252 400 365 175.0 213 153 29.0 545.7 203 12
07/27 1212.7 0.6 -5.6 244 400 446 177.0 280 102 29.1 545.7 203 11
07/26 1212.5 0.2 -5.9 243 400 522 172.0 346 173 29.2 545.5 209 12
NY Power Authority Comments : On July 26, the reservoir elevation rose above the low elevation trigger. Routine Communication Protocol is now in effect, because only one trigger (30 day low inflow) is activated.
07/25 1212.2 -0.2 -6.3 251 400 285 160.0 112 52 29.8 544.7 220 12
07/24 1212.2 -0.4 -6.5 251 400 207 156.0 74 28 30.7 544.2 198 11
07/23 1212.3 -0.5 -6.6 251 400 76 157.0 62 17 28.8 544.3 198 11
07/22 1212.5 -0.5 -6.5 252 400 50 162.0 57 14 29.9 544.4 198 12
07/21 1212.7 -0.5 -6.4 253 400 82 165.0 58 14 30.9 544.5 198 12
07/20 1212.9 -0.5 -6.3 253 400 23 169.0 62 17 31.5 544.6 198 11
07/19 1213.1 -0.4 -6.3 249 400 96 179.0 68 20 31.4 544.7 198 12
07/18 1213.3 -0.3 -6.2 241 400 88 186.0 80 28 30.0 544.8 198 11
07/17 1213.5 -0.4 -6.3 241 400 141 190.0 80 33 30.8 544.9 201 11
07/16 1213.6 -0.5 -6.3 242 400 195 194.0 68 15 29.2 545.0 198 11
07/15 1213.7 -0.6 -6.4 242 400 88 199.0 68 16 29.0 545.1 198 11
07/14 1213.8 -0.6 -6.3 242 400 61 208.0 68 15 32.3 545.2 198 11
07/13 1214.0 -0.5 -6.1 243 400 79 216.0 71 16 33.5 545.4 201 12
07/12 1214.2 -0.6 -6.0 244 400 32 220.0 76 16 32.5 545.5 201 11
07/11 1214.4 -0.5 -5.9 244 400 63 227.0 84 18 33.6 545.7 201 11
07/10 1214.6 -0.5 -5.9 245 400 88 230.0 93 20 32.3 545.8 201 12
07/09 1214.8 -0.6 -5.8 245 400 57 236.0 107 22 30.5 545.9 201 11
07/08 1214.9 -0.6 -6.0 245 400 87 245.0 128 26 N/A 546.0 201 12
07/07 1215.0 -0.6 -6.0 245 400 128 253.0 154 34 30.6 546.2 201 12
07/06 1215.1 -0.7 -6.0 246 400 196 262.0 136 32 30.2 546.3 201 12
07/05 1215.1 -0.9 -6.1 246 400 133 270.0 108 26 N/A 546.4 201 11
07/04 1215.3 -0.9 -6.0 246 400 178 286.0 125 32 30.9 546.5 201 12
NY Power Authority Comments : On July 4, the 30 day average inflow fell below the 300 cfs low inflow trigger. Enhanced Communication Protocol is in effect, because both low elevation and low inflow triggers are activated.
07/03 1215.4 -1.0 -6.0 246 400 220 301.0 151 45 30.9 546.6 201 12
07/02 1215.4 -1.1 -6.2 249 400 252 308.0 128 31 N/A 546.6 201 12
07/01 1215.4 -1.3 -6.3 247 400 213 310.0 153 36 32.0 546.6 201 11
06/30 1215.5 -1.4 -6.4 247 400 293 316.0 208 51 31.8 546.7 203 12
06/29 1215.5 -1.6 -6.5 246 400 509 322.0 310 86 N/A 546.8 203 12
06/28 1215.3 -1.9 -6.9 246 400 446 320.0 323 103 29.0 546.9 203 11
06/27 1215.1 -2.3 -7.1 305 470 285 324.0 101 24 27.4 546.9 203 44
NY Power Authority Comments : The Canal Corporation authorized a discharge of 250 cfs to begin at 4pm June 27.
06/26 1215.2 -2.4 -7.1 448 470 178 334.0 100 22 29.2 547.0 203 44
06/25 1215.5 -2.3 -6.9 472 470 144 351.0 110 25 28.5 547.1 203 43
06/24 1215.8 -2.1 -6.7 504 500 230 368.0 108 25 27.0 547.2 203 43
06/23 1216.0 -2.0 -6.6 505 500 229 388.0 100 22 28.0 547.4 203 43
06/22 1216.3 -2.0 -6.4 499 500 164 416.0 101 23 29.8 547.5 203 43
06/21 1216.6 -1.9 -6.1 500 500 191 459.0 113 27 28.7 547.6 203 43
06/20 1216.9 -1.7 -6.0 524 520 329 491.0 129 32 N/A 547.7 203 44
06/19 1217.1 -1.6 -5.8 522 520 297 530.0 144 43 29.8 547.8 203 44
06/18 1217.3 -1.6 -5.8 519 520 206 570.0 127 30 30.9 548.0 203 43
06/17 1217.6 -1.6 -5.7 528 530 271 587.0 140 33 N/A 548.1 206 44
06/16 1217.9 -1.5 -5.4 531 530 331 595.0 168 43 28.4 548.2 206 44
06/15 1218.1 -1.4 -5.2 527 530 357 603.0 196 55 28.2 548.3 206 44
06/14 1218.2 -1.4 -5.0 529 530 298 616.0 170 56 29.1 548.4 206 44
06/13 1218.5 -1.4 -4.9 577 560 197 627.0 129 28 32.3 548.5 206 43
06/12 1218.8 -1.3 -4.7 568 560 245 640.0 134 28 32.5 548.6 206 44
06/11 1219.1 -1.0 -4.4 553 560 168 655.0 149 32 29.3 548.7 206 44
06/10 1219.4 -1.0 -4.3 571 570 273 679.0 164 36 30.1 548.9 206 44
06/09 1219.7 -0.9 -4.1 573 570 304 704.0 185 42 29.1 548.9 206 44
06/08 1220.0 -0.9 -3.9 570 570 331 727.0 213 50 28.6 549.0 206 44
06/07 1220.2 -0.7 -3.7 574 570 395 754.0 244 62 N/A 549.1 209 44
06/06 1220.4 -0.8 -3.7 632 580 452 794.0 292 80 27.8 549.2 209 44
06/05 1220.5 -0.8 -3.6 588 580 623 852.0 374 119 26.9 549.2 211 45
06/04 1220.5 -1.0 -3.7 593 580 628 920.0 331 131 29.2 549.2 214 45
06/03 1220.5 -1.1 -3.8 587 590 407 1026.0 210 43 30.9 549.1 206 44
06/02 1220.7 -1.1 -3.5 580 590 306 1134.0 239 49 31.0 549.2 209 43
06/01 1220.9 -1.1 -3.3 594 590 412 1246.0 253 54 28.6 549.3 209 44
05/31 1221.1 -0.9 -3.1 592 590 469 1328.0 264 57 31.7 549.4 209 44
05/30 1221.2 -0.8 -3.0 711 700 462 1408.0 307 67 31.9 549.5 209 43
05/29 1221.4 -0.6 -2.8 703 700 548 1490.0 365 87 29.1 549.6 209 44
05/28 1221.6 -0.4 -2.7 694 700 601 1570.0 N/A N/A 27.5 549.6 209 24
05/27 1221.7 -0.3 -2.6 681 680 682 1654.0 N/A N/A 30.3 549.7 209 24
05/26 1221.7 -0.3 -2.6 697 680 634 1788.0 493 96 29.3 549.7 209 23
05/25 1221.8 -0.2 -2.6 688 680 845 2056.0 624 119 29.7 549.7 209 24
05/24 1221.7 -0.3 -2.7 689 680 1065 2183.0 842 165 30.2 549.7 211 24
05/23 1221.4 -0.6 -3.0 779 770 1464 2227.0 1100 233 29.2 549.6 217 24
05/22 1220.9 -1.1 -3.5 772 770 1144 2231.0 863 184 30.2 549.3 209 0
05/21 1220.6 -1.4 -3.9 778 770 1514 2228.0 1120 216 27.3 549.3 211 0
05/20 1220.1 -1.9 -4.4 869 870 1478 2208.0 1130 239 28.5 549.2 214 0
05/19 1219.6 -2.4 -4.9 873 870 723 2193.0 433 113 29.2 549.0 209 0
05/18 1219.8 -2.2 -4.7 881 870 518 2215.0 377 83 28.9 549.1 206 0
05/17 1220.1 -1.9 -4.4 1095 870 576 2260.0 437 100 30.0 549.1 209 0
05/16 1220.5 -1.5 -4.0 1403 1400 724 2328.0 513 127 30.2 549.2 209 0
05/15 1221.1 -0.8 -3.4 1403 1400 622 2355.0 470 108 30.2 549.1 209 0
05/14 1221.7 -0.3 -2.9 1479 1400 594 2391.0 475 98 30.8 549.2 209 0
NY Power Authority Comments : On May 14, the Hinckley low elevation trigger became ACTIVATED. Routine Communication Protocols are in effect.
05/13 1222.4 0.4 -2.1 1591 1600 695 2427.0 543 114 28.9 549.2 209 0
05/12 1223.1 1.1 -1.3 1598 1600 909 2447.0 622 127 29.9 549.2 209 0
05/11 1223.7 1.7 -0.7 1587 1600 998 2438.0 744 164 31.8 549.2 211 0
05/10 1224.2 2.2 -0.1 1667 1600 1007 2428.0 859 143 30.8 549.3 211 0
05/09 1224.7 2.7 0.5 1797 1800 1130 2423.0 1020 145 31.3 549.2 211 0
05/08 1225.2 3.2 0.9 2052 1800 1615 2416.0 1310 180 30.6 549.2 211 0
05/07 1225.5 3.6 1.2 2586 1800 2180 2401.0 1810 223 28.2 549.2 239 0
05/06 1225.8 3.9 1.5 3172 1800 2661 2386.0 2110 236 27.0 549.1 237 0
05/05 1226.2 4.2 1.8 3755 1800 3821 2390.0 3130 318 29.9 549.0 239 0
05/04 1226.2 4.2 1.8 3594 1800 3626 2432.0 3090 292 28.0 548.7 237 0
05/03 1226.2 4.2 1.8 3403 1800 3673 2431.0 3100 324 29.8 548.6 237 0
05/02 1226.0 4.0 1.7 2777 1400 2876 2357.0 2400 393 31.1 548.5 237 0
05/01 1226.0 4.0 1.9 2897 1400 2878 2322.0 2110 533 29.7 548.4 237 0
04/30 1226.0 N/A 2.1 2743 1400 2906 2320.0 2220 488 27.9 548.1 248 0
04/29 1225.9 N/A 2.1 1884 1200 2944 2368.0 2500 453 29.1 547.8 239 0
04/28 1225.2 N/A 1.6 1199 1200 3140 2380.0 2380 540 28.5 547.5 234 0
04/27 1223.8 N/A 0.4 1204 1200 4701 2296.0 3220 840 29.9 547.3 237 0
04/26 1221.1 N/A -2.1 1268 1200 8655 2151.0 6170 1230 30.4 546.9 248 0
04/25 1215.0 N/A -7.8 1342 1330 4655 1873.0 3750 730 28.7 546.1 231 0
04/24 1212.0 N/A -10.4 1336 1330 2387 1727.0 1780 488 29.1 545.7 231 0
04/23 1211.0 N/A -10.8 1362 1330 1591 1654.0 1180 349 30.5 545.4 231 0
04/22 1210.8 N/A -10.2 1391 1400 1064 1613.0 837 242 29.8 545.2 231 0
04/21 1211.2 N/A -9.2 1394 1400 897 1587.0 671 192 29.4 544.9 231 0
04/20 1211.6 N/A -8.2 1397 1400 1037 1568.0 772 212 29.4 544.8 305 0
04/19 1212.0 N/A -7.2 1396 1400 1372 1543.0 958 259 N/A 544.5 309 0
04/18 1212.1 N/A -6.7 1426 1400 1891 1507.0 1260 389 29.4 544.3 312 0
04/17 1211.6 N/A -6.6 1411 1400 2605 1453.0 1730 603 29.1 543.7 322 0
04/16 1210.5 N/A -6.8 1674 1400 1524 1378.0 1110 328 25.3 544.5 1280 0
NY Power Authority Comments : On April 16, the flood threat had diminished. The Canal Corporation authorized a return to the 1400 cfs Operating Diagram discharge today.
04/15 1210.7 N/A -5.7 2265 1400 1711 1341.0 1200 344 28.1 544.5 1280 0
04/14 1211.3 N/A -4.3 2276 1400 1688 1299.0 1290 383 28.4 544.8 1290 0
04/13 1211.8 N/A -3.0 2289 1400 1273 1258.0 978 332 28.9 545.2 1120 0
04/12 1212.8 N/A -1.4 1773 1400 654 1232.0 537 154 28.9 545.3 1100 0
NY Power Authority Comments : On April 12, the Canal Corporation authorized a maximum discharge as a preemptive measure to minimize downstream flood impacts due to a significant rainfall/snowmelt event that is forecast. The maximum discharge will be about 2350 cfs.
04/11 1213.9 N/A 0.4 1395 1400 697 1228.0 542 139 29.0 545.9 1110 0
04/10 1214.5 N/A 1.7 1394 1400 843 1220.0 634 161 30.0 546.4 1120 0
04/09 1215.1 N/A 2.8 1399 1400 937 1205.0 727 186 29.1 546.9 925 0
04/08 1215.5 N/A 3.8 1413 1400 1151 1192.0 888 220 30.1 547.3 930 0
04/07 1215.8 N/A 4.9 1415 1400 1739 1174.0 1190 302 27.8 547.6 935 0
04/06 1215.5 N/A 5.4 1424 1400 2790 1138.0 1690 516 30.7 547.7 337 0
04/05 1214.4 N/A 5.2 1207 1400 5075 1071.0 3110 896 31.0 547.3 347 0
04/04 1210.8 N/A 2.6 750 730 3581 929.0 2540 617 28.3 545.6 405 0
04/03 1208.0 N/A 0.9 731 730 1452 842.0 936 286 30.9 545.1 333 0
04/02 1207.2 N/A 1.0 741 730 1845 831.0 1150 398 30.5 544.8 337 0
04/01 1206.1 N/A 0.8 725 720 2800 820.0 1520 -999999 29.6 544.2 358 0
03/31 1203.8 N/A -0.6 725 720 4367 799.0 2240 -999999 30.2 543.5 340 0
03/30 1199.4 N/A -4.1 724 720 3278 715.0 2590 -999999 28.5 542.0 421 0
03/29 1195.2 N/A -7.5 1037 720 620 647.0 399 -999999 29.2 540.2 322 0
03/28 1195.7 N/A -6.1 995 1010 374 678.0 310 -999999 29.8 540.0 315 0
03/27 1196.6 N/A -4.4 1001 1010 315 727.0 299 -999999 31.3 540.0 309 0
03/26 1197.6 N/A -3.0 1175 1010 252 788.0 286 -999999 30.6 540.0 305 0
03/25 1198.9 N/A -1.3 1398 1400 208 862.0 285 -999999 28.5 540.1 302 0
03/24 1200.5 N/A 0.5 1409 1400 365 963.0 296 -999999 30.1 540.2 305 0
03/23 1201.9 N/A 2.0 1401 1400 293 1117.0 306 -999999 30.9 540.2 305 0
03/22 1203.3 N/A 3.6 1416 1400 315 1229.0 314 -999999 30.9 540.3 305 0
03/21 1204.5 N/A 4.9 1413 1400 291 1261.0 329 -999999 30.2 540.4 333 0
03/20 1205.8 N/A 6.4 1406 1400 293 1279.0 333 -999999 30.4 540.5 333 0
03/19 1207.0 N/A 7.6 1453 1400 281 1303.0 340 -999999 N/A 540.6 333 0
03/18 1208.3 N/A 9.0 1495 1400 337 1329.0 331 111 27.4 540.7 333 0
03/17 1209.5 N/A 10.4 1507 1400 413 1339.0 366 114 28.6 540.9 333 0
03/16 1210.6 N/A 11.5 1509 1400 450 1341.0 383 104 N/A 540.9 333 0
03/15 1211.6 N/A 12.6 1527 1400 459 1345.0 402 102 28.4 541.0 337 0
03/14 1212.7 N/A 13.8 1504 1400 492 1347.0 418 102 28.7 541.0 337 0
03/13 1213.6 N/A 14.9 1521 1400 542 1347.0 426 104 29.7 541.1 788 0
03/12 1214.5 N/A 15.9 1474 1400 454 1342.0 436 108 28.8 541.5 794 0
NY Power Authority Comments : Brookfield Power asked for and Canal Corp approved an additional 115 cfs to be released above the 1400 cfs Operating Diagram release from March 12-19, to make up for the 809 cfsd underdischarge caused by the winter storm on March 2-3.
03/11 1215.4 N/A 16.7 1366 1400 388 1339.0 462 114 29.9 541.9 794 0
03/10 1216.3 N/A 17.6 1403 1400 562 1338.0 497 123 29.1 542.3 800 0
03/09 1217.0 N/A 18.3 1399 1400 612 1331.0 519 130 28.0 542.6 800 0
03/08 1217.7 N/A 19.1 1402 1400 661 1322.0 556 145 29.0 543.0 806 0
03/07 1218.3 N/A 19.6 1400 1400 771 1314.0 604 159 N/A 543.4 1170 0
03/06 1218.9 N/A 20.4 1396 1400 811 1299.0 649 181 30.1 543.9 1180 0
03/05 1219.4 N/A 20.9 1443 1400 965 1286.0 727 218 28.3 544.5 1180 0
03/04 1219.8 N/A 21.0 1400 1400 1119 1262.0 860 289 28.7 545.1 1190 0
03/03 1220.1 N/A 21.0 1051 1400 1521 1242.0 1060 454 29.6 545.6 1200 0
NY Power Authority Comments : Hinckley discharge was 809 cfsd lower than the Operating Diagram release on March 2-3, because the Jarvis turbine tripped offline due to the winter storm on March 2.
03/02 1219.7 N/A 20.3 940 1400 2180 1210.0 1370 571 27.2 545.9 1210 0
03/01 1218.7 N/A 19.1 1411 1400 1853 1156.0 1360 579 30.5 546.0 1220 0
02/28 1218.3 N/A 18.7 1334 1400 1218 1120.0 939 484 29.6 546.0 955 0
NY Power Authority Comments : Hinckley discharge was 66 cfsd lower than the Operating Diagram release, because the Jarvis turbine tripped offline for about 1 hour late in the day.
02/27 1218.4 N/A 18.6 1412 1400 1554 1112.0 1020 576 30.1 546.1 960 0
02/26 1218.3 N/A 18.5 1238 1400 1849 1097.0 1230 704 31.3 546.1 960 0
02/25 1217.8 N/A 17.8 982 980 2135 1066.0 1360 706 N/A 545.8 976 0
02/24 1216.9 N/A 16.5 996 980 2492 1031.0 1590 738 29.3 545.5 971 0
02/23 1215.6 N/A 15.0 992 980 3233 1013.0 1940 897 30.8 545.3 494 0
02/22 1213.6 N/A 12.9 981 980 4969 993.0 3240 1110 30.6 544.8 512 0
02/21 1209.9 N/A 9.1 957 950 3657 865.0 2790 928 28.9 542.9 555 0
02/20 1207.1 N/A 6.0 965 950 1288 761.0 1120 588 30.0 540.3 580 0
02/19 1206.8 N/A 5.3 980 950 821 742.0 613 353 31.0 539.6 454 0
02/18 1207.0 N/A 5.2 978 970 1026 738.0 733 421 29.3 539.7 490 0
02/17 1207.0 N/A 5.0 974 970 1044 723.0 881 469 28.8 539.7 490 0
02/16 1206.9 N/A 4.8 979 970 656 723.0 656 366 30.9 539.5 276 0
02/15 1207.3 N/A 4.9 989 970 475 752.0 428 -999999 32.6 539.3 239 0
02/14 1207.9 N/A 5.2 1018 1000 545 788.0 466 -999999 32.6 539.3 242 0
02/13 1208.4 N/A 5.3 1024 1000 545 848.0 562 -999999 30.6 539.2 242 0
02/12 1208.9 N/A 5.4 1021 1000 487 966.0 478 -999999 28.3 539.2 242 0
02/11 1209.4 N/A 5.6 1039 1040 373 1252.0 392 -999999 29.6 539.1 239 0
02/10 1210.1 N/A 5.9 1041 1040 389 1366.0 395 -999999 30.1 539.1 239 0
02/09 1210.8 N/A 6.2 1039 1040 352 1364.0 415 -999999 29.6 539.1 282 0
02/08 1211.5 N/A 6.5 1192 1040 338 1357.0 428 -999999 29.6 539.2 282 0
02/07 1212.3 N/A 6.9 1398 1400 342 1355.0 389 -999999 N/A 539.3 282 0
02/06 1213.3 N/A 7.5 1322 1400 433 1355.0 382 252 31.4 539.4 282 0
NY Power Authority Comments : Hinckley discharge was inadvertently 78 cfsd lower than the Operating Diagram release, related to a Jarvis plant outage.
02/05 1214.1 N/A 8.1 1400 1400 302 1352.0 395 260 30.8 539.5 282 0
02/04 1215.1 N/A 8.6 1395 1400 442 1352.0 387 255 27.6 539.5 282 0
02/03 1216.0 N/A 9.3 1390 1400 248 1347.0 366 241 29.7 539.5 282 0
02/02 1217.0 N/A 9.9 1397 1400 495 1349.0 426 271 30.4 539.6 605 0
02/01 1217.8 N/A 10.4 1409 1400 581 1345.0 501 293 32.2 540.0 610 0
01/31 1218.5 N/A 10.9 1416 1400 544 1337.0 514 305 30.1 540.3 615 0
01/30 1219.2 N/A 11.4 1395 1400 785 1329.0 651 367 32.1 540.6 794 0
01/29 1219.7 N/A 11.6 1267 1400 987 1317.0 793 440 32.1 540.9 800 0
01/28 1220.0 N/A 11.7 1077 1080 1100 1299.0 825 446 29.1 540.9 806 0
01/27 1220.0 N/A 11.6 1077 1080 917 1273.0 735 404 30.3 541.2 800 0
01/26 1220.1 N/A 11.6 1078 1080 1070 1259.0 869 478 30.8 541.6 1070 0
01/25 1220.2 N/A 11.6 1215 1080 1966 1243.0 1280 700 30.2 542.2 1080 0
01/24 1219.6 N/A 10.8 1411 1400 2631 1199.0 1860 970 31.4 542.6 1120 0
01/23 1218.6 N/A 10.0 1411 1400 1137 1144.0 -999999 498 29.4 542.0 1290 0
01/22 1218.8 N/A 10.2 1276 1400 520 1146.0 -999999 338 31.7 542.6 1280 0
01/21 1219.5 N/A 10.5 1062 1070 723 1149.0 -999999 354 29.6 543.5 1290 0
01/20 1219.8 N/A 10.7 1079 1070 707 1143.0 -999999 370 31.1 544.3 1310 0
01/19 1220.1 N/A 10.8 1082 1070 585 1139.0 -999999 399 31.8 545.2 1320 0
01/18 1220.5 N/A 11.1 1017 1070 1040 1143.0 -999999 425 30.6 545.9 1130 0
01/17 1220.5 N/A 10.8 702 700 1520 1128.0 -999999 532 33.4 546.5 1140 0
01/16 1219.9 N/A 10.0 704 700 1542 1091.0 -999999 673 31.8 546.9 1140 0
01/15 1219.2 N/A 9.1 710 700 2361 1049.0 -999999 874 30.0 547.3 1140 0
01/14 1217.9 N/A 7.5 720 710 4066 986.0 -999999 1210 29.9 547.6 1140 0
01/13 1215.0 N/A 4.3 722 710 9070 863.0 -999999 1570 29.4 547.6 1170 0
01/12 1207.0 N/A -4.0 713 710 3802 575.0 -999999 521 30.6 542.9 1360 0
01/11 1203.6 N/A -7.6 717 710 337 464.0 -999999 99 31.9 542.7 901 0
01/10 1204.0 N/A -7.5 882 770 142 472.0 -999999 91 33.0 543.3 508 0
01/09 1204.9 N/A -6.8 827 770 282 488.0 -999999 94 N/A 543.6 494 0
NY Power Authority Comments : The Hinckley release on January 9-10 was 169 cfsd more than the Operating Diagram release, due to an inaccurate reservoir water level reading related to a gage freeze up.
01/08 1205.5 N/A -6.4 780 770 328 506.0 -999999 76 30.6 544.0 312 0
01/07 1206.0 N/A -6.0 587 810 358 530.0 N/A 68 29.0 N/A N/A N/A
01/06 1206.3 N/A -5.9 920 810 281 567.0 -999999 71 30.2 544.3 315 0
01/05 1207.0 N/A -5.3 936 810 285 645.0 -999999 77 30.4 544.4 319 0
NY Power Authority Comments : Brookfield proposed and Canal Corporation agreed to a 920 cfs Hinckley release on January 5 and 6 and a release of 590 cfs on January 7, for an average release over these 3 days of 810 cfs. The Operating Diagram release for these 3 days was 810 cfs.
01/04 1207.7 N/A -4.6 792 810 327 763.0 -999999 81 29.9 544.5 319 0
01/03 1208.2 N/A -4.1 855 860 376 781.0 -999999 85 31.1 544.7 319 0
01/02 1208.7 N/A -3.5 860 860 327 786.0 965 84 30.0 544.8 319 0
01/01 1209.3 N/A -3.0 866 860 325 788.0 596 -999999 29.0 544.9 319 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.