## Hinckley Reservoir Water Levels

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Information on this page provides current data and operating parameters related to ongoing management of Hinckley Reservoir water levels.

Previous Data - 2009 Data | 2010 Data | 2011 Data | 2012 Data | 2013 Data

Date | Hinckley Reservoir Elevation (ft) |
Hinckley Reservoir Comparison to Elevation Trigger1 (ft) |
Hinckley Reservoir Comparison to Normal Elevation2 (ft) |
Hinckley Reservoir Discharge (cfs)3 |
2012 Operating Diagram Release4 (cfs) |
Hinckley Reservoir Inflow (cfs) |
Hinckley Reservoir 30-Day Running Average Inflow5 (cfs) |
Wilmurt Streamgage Flow (cfs) |
Mohawk Valley Water Authority Withdrawal (cfs) |
Delta Reservoir Elevation (ft) |
Delta Reservoir Discharge (cfs) |
Nine Mile Feeder Discharge (cfs) |
---|---|---|---|---|---|---|---|---|---|---|---|---|

04/21/2014 | 1225.1 | N/A | 4.8 | 1625 | 1800 | 1485 | 2648.0 | 1310 | N/A | N/A | N/A | N/A |

04/20/2014 | 1225.2 | N/A | 5.4 | 1782 | 1800 | 1542 | 2609.0 | 1280 | 32.4 | N/A | N/A | N/A |

04/19/2014 | 1225.4 | N/A | 6.2 | 2169 | 1800 | 1658 | 2569.0 | N/A | 32.7 | N/A | N/A | N/A |

04/18/2014 | 1225.8 | N/A | 7.0 | 3079 | 1800 | 2224 | 2525.0 | 1700 | 31.6 | N/A | N/A | N/A |

04/17/2014 | 1226.4 | N/A | 8.2 | 5138 | 1800 | 3581 | 2462.0 | 2720 | N/A | N/A | N/A | N/A |

04/16/2014 | 1227.5 | N/A | 10.2 | 10335 | 1400 | 8323 | 2353.0 | 6340 | 32.6 | N/A | N/A | N/A |

04/15/2014 | 1228.9 | N/A | 12.5 | 8133 | 1400 | 12901 | 2086.0 | 12300 | 34.0 | N/A | N/A | N/A |

04/14/2014 | 1225.6 | N/A | 10.0 | 1561 | 1400 | 7635 | 1668.0 | 6460 | 33.3 | N/A | N/A | N/A |

NY Power Authority Comments: The Canal Corporation, Brookfield Power and NYPA agreed today to release more than the Operating Diagram discharge, to help reduce the flood peak.
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04/13/2014 | 1221.0 | N/A | 6.1 | 1411 | 1400 | 5442 | 1426.0 | 4320 | 33.9 | N/A | N/A | N/A |

04/12/2014 | 1217.8 | N/A | 3.6 | 1430 | 1400 | 4885 | 1257.0 | 3390 | 34.8 | N/A | N/A | N/A |

04/11/2014 | 1214.8 | N/A | 1.3 | 1344 | 1400 | 4337 | 1106.0 | 3130 | 34.8 | N/A | N/A | N/A |

04/10/2014 | 1212.1 | N/A | -0.7 | 1438 | 1400 | 3172 | 975.0 | 2100 | 38.2 | N/A | N/A | N/A |

04/09/2014 | 1210.5 | N/A | -1.8 | 989 | 890 | 3241 | 881.0 | 2580 | 40.0 | N/A | N/A | N/A |

NY Power Authority Comments: Additional water was discharged (99 cfsd) above the Operating Diagram scheduled release on April 9, to balance the under discharge (56 cfsd) on April 11 to help with repairs to the Jarvis bypass valve. Another under discharge planned for April 15 was cancelled due to water flowing over the spillway creating unsafe working conditions. | ||||||||||||

04/08/2014 | 1207.8 | N/A | -3.9 | 893 | 890 | 2527 | 783.0 | 1870 | 38.5 | N/A | N/A | N/A |

04/07/2014 | 1206.0 | N/A | -4.9 | 822 | 890 | 1803 | 711.0 | 1100 | 38.2 | N/A | N/A | N/A |

04/06/2014 | 1204.9 | N/A | -5.2 | 617 | 600 | 2162 | 663.0 | 1300 | 38.1 | N/A | N/A | N/A |

04/05/2014 | 1203.2 | N/A | -6.0 | 608 | 600 | 2223 | 603.0 | 1430 | 34.9 | N/A | N/A | N/A |

04/04/2014 | 1201.3 | N/A | -6.9 | 580 | 600 | 1562 | 537.0 | N/A | 35.3 | N/A | N/A | N/A |

04/03/2014 | 1200.1 | N/A | -7.0 | 608 | 600 | 1538 | 494.0 | 976 | 34.5 | N/A | N/A | N/A |

04/02/2014 | 1198.9 | N/A | -7.3 | 310 | 295 | 1615 | 454.0 | 973 | N/A | N/A | N/A | N/A |

04/01/2014 | 1197.2 | N/A | -8.1 | 323 | 295 | 577 | 413.0 | 1070 | 34.8 | N/A | N/A | N/A |

03/31/2014 | 1195.2 | N/A | -9.2 | 310 | 295 | 1588 | 406.0 | 1070 | 33.5 | N/A | N/A | N/A |

03/30/2014 | 1193.2 | N/A | -10.3 | 300 | 300 | 1098 | 367.0 | 667 | N/A | N/A | N/A | N/A |

03/29/2014 | 1191.9 | N/A | -10.8 | 295 | 300 | 478 | 343.0 | 297 | 34.2 | N/A | N/A | N/A |

03/28/2014 | 1191.6 | N/A | -10.2 | 295 | 300 | 346 | 342.0 | 192 | 34.0 | N/A | N/A | N/A |

03/27/2014 | 1191.6 | N/A | -9.4 | 295 | 300 | 273 | 348.0 | 285 | 35.9 | N/A | N/A | N/A |

03/26/2014 | 1191.6 | N/A | -9.0 | 295 | 300 | 289 | 363.0 | 222 | 34.9 | N/A | N/A | N/A |

03/25/2014 | 1191.7 | N/A | -8.5 | 295 | 300 | 318 | 387.0 | 275 | 34.4 | N/A | N/A | N/A |

03/24/2014 | 1191.7 | N/A | -8.3 | 295 | 300 | 304 | 419.0 | 272 | 34.4 | N/A | N/A | N/A |

03/23/2014 | 1191.7 | N/A | -8.2 | 295 | 300 | 318 | 439.0 | 212 | 34.7 | N/A | N/A | N/A |

03/22/2014 | 1191.7 | N/A | -8.0 | 295 | 300 | 332 | 444.0 | 227 | 34.1 | N/A | N/A | N/A |

03/21/2014 | 1191.7 | N/A | -7.9 | 295 | 300 | 347 | 440.0 | 215 | 36.6 | N/A | N/A | N/A |

03/20/2014 | 1191.6 | N/A | -7.8 | 303 | 300 | 340 | 434.0 | 205 | 34.8 | N/A | N/A | N/A |

03/19/2014 | 1191.6 | N/A | -7.9 | 314 | 315 | 323 | 429.0 | 209 | 38.9 | N/A | N/A | N/A |

03/18/2014 | 1191.6 | N/A | -7.6 | 314 | 315 | 308 | 424.0 | 298 | 36.4 | N/A | N/A | N/A |

03/17/2014 | 1191.7 | N/A | -7.4 | 330 | 315 | 324 | 420.0 | 324 | 34.3 | N/A | N/A | N/A |

03/16/2014 | 1191.7 | N/A | -7.4 | 353 | 360 | 359 | 416.0 | 241 | 36.2 | N/A | N/A | N/A |

03/15/2014 | 1191.8 | N/A | -7.2 | 353 | 360 | 362 | 410.0 | 226 | 34.3 | N/A | N/A | N/A |

03/14/2014 | 1191.8 | N/A | -7.0 | 353 | 360 | 376 | 405.0 | 329 | 35.0 | N/A | N/A | N/A |

03/13/2014 | 1191.8 | N/A | -6.9 | 393 | 360 | 343 | 399.0 | 258 | 37.0 | N/A | N/A | N/A |

03/12/2014 | 1191.9 | N/A | -6.7 | 450 | 450 | 429 | 396.0 | 230 | 36.1 | N/A | N/A | N/A |

03/11/2014 | 1192.0 | N/A | -6.7 | 451 | 450 | 343 | 390.0 | 208 | 36.7 | N/A | N/A | N/A |

03/10/2014 | 1192.2 | N/A | -6.5 | 479 | 450 | 297 | 384.0 | 212 | N/A | N/A | N/A | N/A |

03/09/2014 | 1192.6 | N/A | -6.2 | 515 | 560 | 384 | 380.0 | 229 | 0.3 | N/A | N/A | N/A |

03/08/2014 | 1192.8 | N/A | -5.8 | 518 | 560 | 361 | 379.0 | 234 | 0.3 | N/A | N/A | N/A |

03/07/2014 | 1193.1 | N/A | -5.6 | 521 | 560 | 356 | 373.0 | 309 | 0.3 | N/A | N/A | N/A |

03/06/2014 | 1193.4 | N/A | -5.1 | 580 | 560 | 246 | 372.0 | 335 | 0.3 | N/A | N/A | N/A |

03/05/2014 | 1193.9 | N/A | -4.6 | 718 | 720 | 262 | 372.0 | 283 | 21.0 | N/A | N/A | N/A |

NY Power Authority Comments: The March 5 - 10 MVWA withdrawals will be updated soon with estimated values, based on the measured flow rate into the water treatment plant, adding the typical difference in the two meter readings. | ||||||||||||

03/04/2014 | 1194.6 | N/A | -4.2 | 710 | 720 | 343 | 373.0 | 339 | 37.0 | N/A | N/A | N/A |

03/03/2014 | 1195.2 | N/A | -3.9 | 729 | 720 | 388 | 370.0 | 343 | 36.8 | N/A | N/A | N/A |

03/02/2014 | 1195.8 | N/A | -3.6 | 744 | 740 | 361 | 365.0 | 302 | 40.3 | N/A | N/A | N/A |

03/01/2014 | 1196.4 | N/A | -3.2 | 743 | 740 | 408 | 362.0 | 418 | 38.2 | N/A | N/A | N/A |

02/28/2014 | 1196.9 | N/A | -2.9 | 745 | 740 | 399 | 356.0 | 459 | 36.5 | N/A | N/A | N/A |

02/27/2014 | 1197.4 | N/A | -2.5 | 743 | 740 | 448 | 349.0 | 512 | 37.3 | N/A | N/A | N/A |

02/26/2014 | 1197.8 | N/A | -2.3 | 699 | 690 | 526 | 345.0 | 420 | 36.2 | N/A | N/A | N/A |

02/25/2014 | 1198.1 | N/A | -2.3 | 693 | 690 | 699 | 338.0 | 540 | 36.5 | N/A | N/A | N/A |

02/24/2014 | 1198.1 | N/A | -2.5 | 705 | 690 | 1015 | 324.0 | 713 | 36.8 | N/A | N/A | N/A |

02/23/2014 | 1197.7 | N/A | -3.0 | 772 | 770 | 1272 | 300.0 | 988 | 36.5 | N/A | N/A | N/A |

NY Power Authority Comments: On February 23, the 30-day inflow rose to the 300 cfs low inflow trigger. The low inflow trigger is DE-ACTIVATED. Normal monitoring of Hinckley reservoir has resumed. | ||||||||||||

02/22/2014 | 1197.1 | N/A | -3.7 | 781 | 770 | 910 | 271.0 | 886 | 37.0 | N/A | N/A | N/A |

02/21/2014 | 1196.9 | N/A | -4.2 | 778 | 770 | 469 | 249.0 | 306 | 36.7 | N/A | N/A | N/A |

02/20/2014 | 1197.4 | N/A | -4.1 | 770 | 770 | 223 | 248.0 | 217 | 37.2 | N/A | N/A | N/A |

02/19/2014 | 1198.2 | N/A | -3.6 | 846 | 850 | 174 | 258.0 | 225 | 36.9 | N/A | N/A | N/A |

02/18/2014 | 1199.1 | N/A | -2.9 | 898 | 850 | 168 | 276.0 | 281 | 36.5 | N/A | N/A | N/A |

02/17/2014 | 1200.1 | N/A | -2.0 | 919 | 850 | 188 | 298.0 | 324 | 37.2 | N/A | N/A | N/A |

NY Power Authority Comments: As of February 17, the Hinckley reservoir 30 day inflow trigger became ACTIVATED. Routine Communication Protocols were utilized. | ||||||||||||

02/16/2014 | 1201.0 | N/A | -1.4 | 935 | 890 | 192 | 326.0 | 240 | 37.4 | N/A | N/A | N/A |

02/15/2014 | 1202.0 | N/A | -0.7 | 910 | 890 | 181 | 368.0 | 235 | 38.2 | N/A | N/A | N/A |

02/14/2014 | 1202.9 | N/A | -0.2 | 898 | 890 | 201 | 437.0 | 236 | 39.1 | N/A | N/A | N/A |

02/13/2014 | 1203.7 | N/A | 0.2 | 915 | 890 | 199 | 551.0 | 336 | 38.6 | N/A | N/A | N/A |

02/12/2014 | 1204.5 | N/A | 0.7 | 926 | 930 | 210 | 652.0 | 367 | 37.1 | N/A | N/A | N/A |

02/11/2014 | 1205.4 | N/A | 1.2 | 936 | 930 | 245 | 749.0 | 287 | 39.2 | N/A | N/A | N/A |

02/10/2014 | 1206.2 | N/A | 1.6 | 956 | 930 | 239 | 900.0 | 263 | 37.0 | N/A | N/A | N/A |

02/09/2014 | 1206.9 | N/A | 1.9 | 980 | 970 | 167 | 919.0 | 296 | 39.5 | N/A | N/A | N/A |

02/08/2014 | 1207.8 | N/A | 2.4 | 973 | 970 | 166 | 931.0 | 379 | 36.4 | N/A | N/A | N/A |

02/07/2014 | 1208.7 | N/A | 2.9 | 960 | 970 | 355 | 948.0 | 335 | 37.7 | N/A | N/A | N/A |

02/06/2014 | 1209.3 | N/A | 3.2 | 988 | 970 | 201 | 966.0 | 318 | 38.5 | N/A | N/A | N/A |

02/05/2014 | 1210.1 | N/A | 3.6 | 1019 | 1020 | 318 | 994.0 | 272 | 36.7 | N/A | N/A | N/A |

02/04/2014 | 1210.8 | N/A | 4.1 | 1014 | 1020 | 249 | 1004.0 | 280 | N/A | N/A | N/A | N/A |

02/03/2014 | 1211.6 | N/A | 4.7 | 1044 | 1020 | 303 | 1009.0 | 290 | 40.3 | N/A | N/A | N/A |

02/02/2014 | 1212.3 | N/A | 5.2 | 1077 | 1070 | 234 | 1008.0 | 297 | 38.4 | N/A | N/A | N/A |

02/01/2014 | 1213.1 | N/A | 5.7 | 1077 | 1070 | 244 | 1011.0 | N/A | 36.7 | N/A | N/A | N/A |

01/31/2014 | 1213.9 | N/A | 6.3 | 1083 | 1070 | 265 | 1015.0 | 307 | 22.7 | N/A | N/A | N/A |

01/30/2014 | 1214.7 | N/A | 6.8 | 1213 | 1070 | 241 | 1016.0 | 399 | 0.0 | N/A | N/A | N/A |

01/29/2014 | 1215.5 | N/A | 7.4 | 1409 | 1400 | 191 | 1024.0 | 425 | 5.1 | N/A | N/A | N/A |

01/28/2014 | 1216.6 | N/A | 8.3 | 1407 | 1400 | 308 | 1034.0 | 354 | 33.7 | N/A | N/A | N/A |

01/27/2014 | 1217.6 | N/A | 9.2 | 1410 | 1400 | 319 | 1047.0 | 367 | 31.0 | N/A | N/A | N/A |

01/26/2014 | 1218.5 | N/A | 10.0 | 1401 | 1400 | 289 | 1043.0 | 390 | 24.0 | N/A | N/A | N/A |

01/25/2014 | 1219.4 | N/A | 10.8 | 1407 | 1400 | 306 | 1043.0 | N/A | 7.1 | N/A | N/A | N/A |

01/24/2014 | 1220.3 | N/A | 11.6 | 1404 | 1400 | 378 | 1051.0 | 404 | 14.2 | N/A | N/A | N/A |

01/23/2014 | 1221.2 | N/A | 12.6 | 1404 | 1400 | 267 | 1066.0 | 412 | 32.0 | N/A | N/A | N/A |

01/22/2014 | 1222.1 | N/A | 13.5 | 1403 | 1400 | 439 | 1159.0 | 371 | 39.3 | N/A | N/A | N/A |

01/21/2014 | 1222.8 | N/A | 13.9 | 1392 | 1400 | 512 | 1344.0 | 441 | 37.3 | N/A | N/A | N/A |

01/20/2014 | 1223.5 | N/A | 14.4 | 1258 | 1400 | 727 | 1527.0 | 596 | 35.1 | N/A | N/A | N/A |

01/19/2014 | 1223.9 | N/A | 14.6 | 1061 | 1060 | 823 | 1545.0 | 695 | 34.5 | N/A | N/A | N/A |

01/18/2014 | 1224.1 | N/A | 14.7 | 1061 | 1060 | 1018 | 1531.0 | N/A | 37.2 | N/A | N/A | N/A |

01/17/2014 | 1224.2 | N/A | 14.5 | 1070 | 1060 | 1453 | 1507.0 | 1090 | 34.5 | N/A | N/A | N/A |

01/16/2014 | 1223.9 | N/A | 14.0 | 1024 | 1060 | 2246 | 1468.0 | 1560 | 35.1 | N/A | N/A | N/A |

01/15/2014 | 1223.0 | N/A | 12.9 | 959 | 940 | 3633 | 1401.0 | 2570 | 35.8 | N/A | N/A | N/A |

01/14/2014 | 1220.9 | N/A | 10.5 | 946 | 940 | 3223 | 1293.0 | 2450 | 32.5 | N/A | N/A | N/A |

01/13/2014 | 1219.1 | N/A | 8.4 | 957 | 940 | 3129 | 1198.0 | 2240 | 35.9 | N/A | N/A | N/A |

01/12/2014 | 1217.3 | N/A | 6.4 | 947 | 940 | 4775 | 1108.0 | 3840 | 35.2 | N/A | N/A | N/A |

01/11/2014 | 1214.0 | N/A | 2.8 | 936 | 940 | 797 | 963.0 | 1110 | 34.5 | N/A | N/A | N/A |

01/10/2014 | 1214.2 | N/A | 2.7 | 944 | 940 | 539 | 952.0 | 620 | 33.0 | N/A | N/A | N/A |

01/09/2014 | 1214.5 | N/A | 2.8 | 964 | 940 | 685 | 954.0 | 766 | 37.3 | N/A | N/A | N/A |

01/08/2014 | 1214.8 | N/A | 2.9 | 989 | 980 | 880 | 954.0 | 938 | 35.0 | N/A | N/A | N/A |

01/07/2014 | 1214.9 | N/A | 2.9 | 983 | 980 | 1052 | 953.0 | 1040 | 36.9 | N/A | N/A | N/A |

01/06/2014 | 1214.8 | N/A | 2.6 | 1007 | 980 | 616 | 951.0 | 668 | 35.4 | N/A | N/A | N/A |

01/05/2014 | 1215.2 | N/A | 2.9 | 1055 | 1057 | 381 | 976.0 | 489 | 34.9 | N/A | N/A | N/A |

01/04/2014 | 1215.8 | N/A | 3.5 | 1064 | 1057 | 296 | 1005.0 | 428 | 35.1 | N/A | N/A | N/A |

01/03/2014 | 1216.5 | N/A | 4.2 | 1269 | 1057 | 317 | 1018.0 | 409 | 33.6 | N/A | N/A | N/A |

NY Power Authority Comments: The Canal Corporation instructed NYPA to return to the Operating Diagram discharge on January 3.
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01/02/2014 | 1217.3 | N/A | 5.0 | 1401 | 1057 | 345 | 1031.0 | 417 | 33.0 | N/A | N/A | N/A |

01/01/2014 | 1218.2 | N/A | 5.9 | 1399 | 1200 | 318 | 1045.0 | 419 | 34.0 | N/A | N/A | N/A |

^{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 2012 Operating Diagram establishes the rate of release of water from Hinckley Reservoir based upon varying reservoir levels throughout the year. Image of the 2012 Operating Diagram.

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