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New York State Canals

Hinckley Reservoir Water Levels

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

Water Level Data Table
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)
07/30/20141219.07.41.2516520848638.0678N/A550.529443
07/29/20141218.87.00.85035201453630.0102033.4N/AN/AN/A
07/28/20141218.06.20.05335201180603.072033.0549.919143
07/27/20141217.55.4-0.8525530355599.025232.6N/AN/AN/A
07/26/20141217.75.4-0.7523530206647.014835.6N/AN/AN/A
07/25/20141218.05.5-0.6525530295751.017734.4549.919143
07/24/20141218.25.6-0.5596530220793.021336.6549.919143
07/23/20141218.55.7-0.4566570304803.014437.0549.919140
07/22/20141218.75.7-0.3619570235806.013935.1N/AN/AN/A
07/21/20141219.05.80.0571570216814.014834.6N/AN/AN/A
07/20/20141219.46.00.2804680203829.016032.5N/AN/AN/A
07/19/20141219.96.40.5808680232850.017634.7N/AN/AN/A
07/18/20141220.46.70.8811680321887.020036.5N/AN/AN/A
07/17/20141220.86.91.0911680293945.023033.0550.32560
07/16/20141221.37.21.411311010381965.027436.4550.43160
07/15/20141221.97.71.911361010505994.031836.2550.41800
07/14/20141222.48.02.3104410105031070.035633.7550.51910
NY Power Authority Comments: Jarvis underdischarged 931 cfsd over July 8-10, because of the storm on July 8. An additional 133 cfs will be added to the Operating Diagram release over July 14-21, to make up this water.
07/13/20141222.98.32.78318304141194.029737.0N/AN/AN/A
07/12/20141223.28.43.08318304771279.035037.0N/AN/AN/A
07/11/20141223.58.63.28358306091290.046932.1550.52460
07/10/20141223.78.63.277583010371287.070735.8550.63080
07/09/20141223.58.22.9451116012601259.0102032.5N/AN/AN/A
07/08/20141222.97.42.199311607411230.0350N/A550.52160
NY Power Authority Comments: The severe storm this evening (July 8) tore down transmission lines and forced Jarvis powerhouse offline. The maximum diversion capability is 710 cfs through outlet #4, which is less than the Operating Diagram discharge.
07/07/20141223.27.62.2116811604901214.034831.9550.52160
07/06/20141223.77.92.6116211606411210.044231.3N/AN/AN/A
07/05/20141224.18.12.91165116010731204.066830.9N/AN/AN/A
07/04/20141224.28.02.91163116018191185.0102032.0N/AN/AN/A
07/03/20141223.77.32.31159116017121145.0115031.9550.63760
07/02/20141223.46.81.8113110906351103.049333.8550.63550
07/01/20141223.77.02.0109010905031097.039134.5550.63470
06/30/20141224.27.32.3101310905871095.044633.0N/AN/AN/A
06/29/20141224.67.42.66816706501091.058033.0N/AN/AN/A
06/28/20141224.67.42.468067010781089.087231.7N/AN/AN/A
06/27/20141224.36.92.167867017921077.0135033.8N/AN/AN/A
06/26/20141223.55.91.2105867033301044.0246031.4551.822100
06/25/20141221.84.0-0.6149515001530962.0132033.3550.74590
06/24/20141221.83.9-0.713711500519957.030133.7550.52160
NY Power Authority Comments: 2760 cfsh of water was under-diverted during 4 hours today, in order to safely repair the Jarvis bypass valve. Canal Corp and Brookfield Power agreed that this water can be made up on Thursday June 26.
06/23/20141222.54.4-0.2148715003981004.032533.2550.52460
06/22/20141223.45.00.6147814804711049.040233.8N/AN/AN/A
06/21/20141224.15.61.4147414806851074.0N/A31.3N/AN/AN/A
06/20/20141224.76.11.8157414808431078.075934.8550.86070
06/19/20141225.36.52.31799148013301086.0122032.9N/AN/AN/A
06/18/20141225.76.72.5105652020621078.0179031.5551.210700
06/17/20141225.05.81.711445208791068.070533.5N/AN/AN/A
06/16/20141225.25.81.973052012601151.0104031.4N/AN/AN/A
NY Power Authority Comments: Additional water was being released (June 16-18) so the reservoir water level would fall below spillway crest, so that the bypass valve could be repaired under safe water conditions below the Hinckley dam.
06/15/20141224.85.31.554153028011301.0170029.5N/AN/AN/A
NY Power Authority Comments: On June 15, the reservoir elevation rose above the elevation trigger. The low elevation trigger is DE-ACTIVATED. Normal monitoring of Hinckley reservoir has resumed.
06/14/20141223.23.5-0.161653041941270.0323030.1N/AN/AN/A
06/13/20141220.00.2-3.453053029881151.0N/A29.6550.43080
06/12/20141218.1-2.0-5.45325308011077.048330.3549.91960
06/11/20141217.9-2.3-5.79415505061077.022334.3549.91960
06/10/20141218.3-2.1-5.412145502091094.017430.8549.91960
NY Power Authority Comments: As directed by the Canal Corporation, Jarvis went to its maximum discharge capability (1600 cfs) from 0843 June 10 until 0900 June 11, to aid navigation.
06/09/20141219.1-1.5-4.75535503781131.019233.4550.01960
06/08/20141219.3-1.5-4.55575602651159.021030.4N/AN/AN/A
06/07/20141219.5-1.4-4.45605603841187.023734.3N/AN/AN/A
06/06/20141219.7-1.4-4.35645604471212.027030.4550.11990
06/05/20141219.8-1.5-4.35675605111242.0322N/AN/AN/AN/A
06/04/20141219.9-1.6-4.37927906141288.0388N/A550.12040
06/03/20141220.1-1.5-4.27917904591346.030531.2550.01960
06/02/20141220.4-1.4-3.810447904631395.031934.9550.11960
06/01/20141220.9-1.1-3.3140414004421449.036730.5N/AN/AN/A
05/31/20141221.6-0.4-2.6140214004541533.0N/A30.4N/AN/AN/A
NY Power Authority Comments: As of May 31, the Hinckley reservoir elevation trigger became ACTIVATED. Routine Communication Protocols were utilized.
05/30/20141222.40.4-1.8140414006041638.049730.6N/AN/AN/A
05/29/20141223.01.0-1.2139714007181698.059931.7550.22160
05/28/20141223.61.6-0.7140014007801716.069230.1550.32530
05/27/20141224.12.1-0.2146114008681734.0779N/A550.32690
05/26/20141224.52.50.21544140013771759.0104030.1N/AN/AN/A
NY Power Authority Comments: The actual discharge was higher than the Operating Diagram discharge, because the outlet#4 valve adjustment was delayed from Mon May 26 (Memorial Day) to the next normal working day Tues May 27.
05/25/20141224.72.70.31544154019391763.0132029.6N/AN/AN/A
05/24/20141224.42.40.01438154017661737.0131030.3N/AN/AN/A
NY Power Authority Comments: The Jarvis turbine tripped offline for 2 hrs 49 minutes. This resulted in the actual discharge for the day being 102 cfsd below the Operating Diagram discharge.
05/23/20141224.22.2-0.21534154012041736.083830.2N/AN/AN/A
05/22/20141224.42.40.0131015408121776.063930.7550.12040
05/21/20141224.82.80.3122886010931811.077532.9N/AN/AN/A
NY Power Authority Comments: The buoy safety line was installed and the Jarvis discharge reverted to the Operating Diagram discharge of 860 cfs at 11am.
05/20/2014N/AN/AN/AN/AN/AN/A1825.0101029.1550.01990
05/19/20141225.33.30.8209486017571815.0140033.6N/AN/AN/A
NY Power Authority Comments: NYPA requested and Canal Corp agreed to extending the maximum Jarvis discharge (1620 cfs), so that the water level would drop below spillway crest and installation of the buoy safety line could commence before Memorial day weekend.
05/18/20141225.63.61.12005107033061812.0230029.0N/AN/AN/A
05/17/20141224.72.70.21649107056171776.0N/A29.2N/AN/AN/A
05/16/20141221.7-0.3-2.81623107018751708.0116031.7N/AN/AN/A
05/15/20141221.5-0.5-3.1161710707671923.053831.8550.48440
05/14/20141222.20.2-2.4135914008192328.061032.3550.74120
NY Power Authority Comments: As directed by the Canal Corporation, Jarvis went to its maximum discharge capability (1620 cfs) in anticipation of the heavy rainfall on May 16.
05/13/20141222.60.6-1.9150714008002555.066132.1550.74210
NY Power Authority Comments: Additional water was discharged (107 cfsd) on May 13 to balance a reduction of flow on May 14. The reduction on May 14 allowed for the safe repair to the Jarvis bypass valve.
05/12/20141223.21.2-1.21493140010072710.079432.0550.84940
05/11/20141223.61.6-0.81620164012932839.096329.0N/AN/AN/A
05/10/20141223.91.9-0.41623164011962940.090832.6N/AN/AN/A
05/09/20141224.22.20.01625164010633006.077431.3550.63080
05/08/20141224.62.60.41614164011143101.092831.5N/AN/AN/A
05/07/20141225.03.00.71740180013043148.0115031.4550.74490
05/06/20141225.43.41.02045180018423165.0152032.3550.85930
05/05/20141225.63.61.22107180023073175.0202031.8N/AN/AN/A
05/04/20141225.43.41.02025140018893172.0157031.8N/AN/AN/A
05/03/20141225.63.61.22433140020263161.0N/A30.3N/AN/AN/A
05/02/20141225.93.91.62882140028803145.0230030.6551.09320
05/01/20141225.93.91.82220140034953103.0296032.4551.09380
04/30/20141225.0N/A1.11617160023433006.0178031.6N/AN/AN/A
NY Power Authority Comments: As directed by the Canal Corporation, Jarvis will continue to release its current maximum discharge capability (1600 cfs) in anticipation of the heavy rainfall over the next several days.
04/29/20141224.5N/A0.71578160012412981.098430.9N/AN/AN/A
04/28/20141224.7N/A1.11574160013012976.0111033.0N/AN/AN/A
04/27/20141225.0N/A1.61543154016032948.0130029.8N/AN/AN/A
04/26/20141224.9N/A1.71544154014712907.01250N/AN/AN/AN/A
04/25/20141225.0N/A2.21618154012082867.0116033.1N/AN/AN/A
04/24/20141225.3N/A2.91905154017302836.0152032.2N/AN/AN/A
04/23/20141225.5N/A3.71925180023542789.0205032.9N/AN/AN/A
04/22/20141225.2N/A4.21650180018442721.0165034.0N/AN/AN/A
04/21/20141225.1N/A4.81625180014852670.0131035.0N/AN/AN/A
04/20/20141225.2N/A5.41782180015422631.0128032.4N/AN/AN/A
04/19/20141225.4N/A6.22169180016582591.0N/A32.7N/AN/AN/A
04/18/20141225.8N/A7.03079180022242547.0170031.6N/AN/AN/A
04/17/20141226.4N/A8.25138180035812484.02720N/AN/AN/AN/A
NY Power Authority Comments: The Jarvis plant discharge capability is about 1620 cfs, because of out-of-service equipment. Beginning today, the Jarvis plant equipment is unable to release the full 1800 cfs Operating Diagram release.
04/16/20141227.5N/A10.210335140083232375.0634032.6N/AN/AN/A
04/15/20141228.9N/A12.581331400129012108.01230034.0N/AN/AN/A
04/14/20141225.6N/A10.01561140076351690.0646033.3N/AN/AN/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.
04/13/20141221.0N/A6.11411140054421448.0432033.9N/AN/AN/A
04/12/20141217.8N/A3.61430140048851279.0339034.8N/AN/AN/A
04/11/20141214.8N/A1.31344140043371128.0313034.8N/AN/AN/A
04/10/20141212.1N/A-0.7143814003172997.0210038.2N/AN/AN/A
04/09/20141210.5N/A-1.812028903901903.0258040.0N/AN/AN/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.
04/08/20141207.8N/A-3.98938902527783.0187038.5N/AN/AN/A
04/07/20141206.0N/A-4.98228901803711.0110038.2N/AN/AN/A
04/06/20141204.9N/A-5.26176002162663.0130038.1N/AN/AN/A
04/05/20141203.2N/A-6.06086002223603.0143034.9N/AN/AN/A
04/04/20141201.3N/A-6.95806001562537.0N/A35.3N/AN/AN/A
04/03/20141200.1N/A-7.06086001538494.097634.5N/AN/AN/A
04/02/20141198.9N/A-7.33102951615454.0973N/AN/AN/AN/A
04/01/20141197.2N/A-8.1323295577413.0107034.8N/AN/AN/A
03/31/20141195.2N/A-9.23102951588406.0107033.5N/AN/AN/A
03/30/20141193.2N/A-10.33003001098367.0667N/AN/AN/AN/A
03/29/20141191.9N/A-10.8295300478343.029734.2N/AN/AN/A
03/28/20141191.6N/A-10.2295300346342.019234.0N/AN/AN/A
03/27/20141191.6N/A-9.4295300273348.028535.9N/AN/AN/A
03/26/20141191.6N/A-9.0295300289363.022234.9N/AN/AN/A
03/25/20141191.7N/A-8.5295300318387.027534.4N/AN/AN/A
03/24/20141191.7N/A-8.3295300304419.027234.4N/AN/AN/A
03/23/20141191.7N/A-8.2295300318439.021234.7N/AN/AN/A
03/22/20141191.7N/A-8.0295300332444.022734.1N/AN/AN/A
03/21/20141191.7N/A-7.9295300347440.021536.6N/AN/AN/A
03/20/20141191.6N/A-7.8303300340434.020534.8N/AN/AN/A
03/19/20141191.6N/A-7.9314315323429.020938.9N/AN/AN/A
03/18/20141191.6N/A-7.6314315308424.029836.4N/AN/AN/A
03/17/20141191.7N/A-7.4330315324420.032434.3N/AN/AN/A
03/16/20141191.7N/A-7.4353360359416.024136.2N/AN/AN/A
03/15/20141191.8N/A-7.2353360362410.022634.3N/AN/AN/A
03/14/20141191.8N/A-7.0353360376405.032935.0N/AN/AN/A
03/13/20141191.8N/A-6.9393360343399.025837.0N/AN/AN/A
03/12/20141191.9N/A-6.7450450429396.023036.1N/AN/AN/A
03/11/20141192.0N/A-6.7451450343390.020836.7N/AN/AN/A
03/10/20141192.2N/A-6.5479450297384.0212N/AN/AN/AN/A
03/09/20141192.6N/A-6.2515560384380.02290.3N/AN/AN/A
03/08/20141192.8N/A-5.8518560361379.02340.3N/AN/AN/A
03/07/20141193.1N/A-5.6521560356373.03090.3N/AN/AN/A
03/06/20141193.4N/A-5.1580560246372.03350.3N/AN/AN/A
03/05/20141193.9N/A-4.6718720262372.028321.0N/AN/AN/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.
03/04/20141194.6N/A-4.2710720343373.033937.0N/AN/AN/A
03/03/20141195.2N/A-3.9729720388370.034336.8N/AN/AN/A
03/02/20141195.8N/A-3.6744740361365.030240.3N/AN/AN/A
03/01/20141196.4N/A-3.2743740408362.041838.2N/AN/AN/A
02/28/20141196.9N/A-2.9745740399356.045936.5N/AN/AN/A
02/27/20141197.4N/A-2.5743740448349.051237.3N/AN/AN/A
02/26/20141197.8N/A-2.3699690526345.042036.2N/AN/AN/A
02/25/20141198.1N/A-2.3693690699338.054036.5N/AN/AN/A
02/24/20141198.1N/A-2.57056901015324.071336.8N/AN/AN/A
02/23/20141197.7N/A-3.07727701272300.098836.5N/AN/AN/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.
02/22/20141197.1N/A-3.7781770910271.088637.0N/AN/AN/A
02/21/20141196.9N/A-4.2778770469249.030636.7N/AN/AN/A
02/20/20141197.4N/A-4.1770770223248.021737.2N/AN/AN/A
02/19/20141198.2N/A-3.6846850174258.022536.9N/AN/AN/A
02/18/20141199.1N/A-2.9898850168276.028136.5N/AN/AN/A
02/17/20141200.1N/A-2.0919850188298.032437.2N/AN/AN/A
NY Power Authority Comments: As of February 17, the Hinckley reservoir 30 day inflow trigger became ACTIVATED. Routine Communication Protocols were utilized.
02/16/20141201.0N/A-1.4935890192326.024037.4N/AN/AN/A
02/15/20141202.0N/A-0.7910890181368.023538.2N/AN/AN/A
02/14/20141202.9N/A-0.2898890201437.023639.1N/AN/AN/A
02/13/20141203.7N/A0.2915890199551.033638.6N/AN/AN/A
02/12/20141204.5N/A0.7926930210652.036737.1N/AN/AN/A
02/11/20141205.4N/A1.2936930245749.028739.2N/AN/AN/A
02/10/20141206.2N/A1.6956930239900.026337.0N/AN/AN/A
02/09/20141206.9N/A1.9980970167919.029639.5N/AN/AN/A
02/08/20141207.8N/A2.4973970166931.037936.4N/AN/AN/A
02/07/20141208.7N/A2.9960970355948.033537.7N/AN/AN/A
02/06/20141209.3N/A3.2988970201966.031838.5N/AN/AN/A
02/05/20141210.1N/A3.610191020318994.027236.7N/AN/AN/A
02/04/20141210.8N/A4.1101410202491004.0280N/AN/AN/AN/A
02/03/20141211.6N/A4.7104410203031009.029040.3N/AN/AN/A
02/02/20141212.3N/A5.2107710702341008.029738.4N/AN/AN/A
02/01/20141213.1N/A5.7107710702441011.0N/A36.7N/AN/AN/A
01/31/20141213.9N/A6.3108310702651015.030722.7N/AN/AN/A
01/30/20141214.7N/A6.8121310702411016.03990.0N/AN/AN/A
01/29/20141215.5N/A7.4140914001911024.04255.1N/AN/AN/A
01/28/20141216.6N/A8.3140714003081034.035433.7N/AN/AN/A
01/27/20141217.6N/A9.2141014003191047.036731.0N/AN/AN/A
01/26/20141218.5N/A10.0140114002891043.039024.0N/AN/AN/A
01/25/20141219.4N/A10.8140714003061043.0N/A7.1N/AN/AN/A
01/24/20141220.3N/A11.6140414003781051.040414.2N/AN/AN/A
01/23/20141221.2N/A12.6140414002671066.041232.0N/AN/AN/A
01/22/20141222.1N/A13.5140314004391159.037139.3N/AN/AN/A
01/21/20141222.8N/A13.9139214005121344.044137.3N/AN/AN/A
01/20/20141223.5N/A14.4125814007271527.059635.1N/AN/AN/A
01/19/20141223.9N/A14.6106110608231545.069534.5N/AN/AN/A
01/18/20141224.1N/A14.71061106010181531.0N/A37.2N/AN/AN/A
01/17/20141224.2N/A14.51070106014531507.0109034.5N/AN/AN/A
01/16/20141223.9N/A14.01024106022461468.0156035.1N/AN/AN/A
01/15/20141223.0N/A12.995994036331401.0257035.8N/AN/AN/A
01/14/20141220.9N/A10.594694032231293.0245032.5N/AN/AN/A
01/13/20141219.1N/A8.495794031291198.0224035.9N/AN/AN/A
01/12/20141217.3N/A6.494794047751108.0384035.2N/AN/AN/A
01/11/20141214.0N/A2.8936940797963.0111034.5N/AN/AN/A
01/10/20141214.2N/A2.7944940539952.062033.0N/AN/AN/A
01/09/20141214.5N/A2.8964940685954.076637.3N/AN/AN/A
01/08/20141214.8N/A2.9989980880954.093835.0N/AN/AN/A
01/07/20141214.9N/A2.99839801052953.0104036.9N/AN/AN/A
01/06/20141214.8N/A2.61007980616951.066835.4N/AN/AN/A
01/05/20141215.2N/A2.910551057381976.048934.9N/AN/AN/A
01/04/20141215.8N/A3.5106410572961005.042835.1N/AN/AN/A
01/03/20141216.5N/A4.2126910573171018.040933.6N/AN/AN/A
NY Power Authority Comments: The Canal Corporation instructed NYPA to return to the Operating Diagram discharge on January 3.
01/02/20141217.3N/A5.0140110573451031.041733.0N/AN/AN/A
01/01/20141218.2N/A5.9139912003181045.041934.0N/AN/AN/A

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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 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.

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