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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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2016 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)
02/111213.2N/A9.010771070460770.0332-999999N/A545.43180
02/101213.8N/A9.210161010608825.0418-99999932.4545.53180
02/091214.2N/A9.210171010633921.0469-99999932.1N/AN/AN/A
02/081214.5N/A9.110141010873940.0567-99999934.7545.53210
02/071214.7N/A8.99479401081930.0N/AN/A32.7N/AN/AN/A
02/061214.6N/A8.59479401518910.099935032.5N/AN/AN/A
02/051214.1N/A7.69529402683877.0153070432.8545.53420
02/041212.5N/A5.89549403551803.02260103034.6544.63660
02/031210.1N/A3.2980970929698.072436532.7542.33150
02/021210.1N/A3.0971970370689.034113333.1542.33150
02/011210.8N/A3.4975970313705.02799833.9542.13080
01/311211.4N/A3.89991010278729.02616733.0N/AN/AN/A
01/301212.1N/A4.210101010301763.0N/AN/A32.0N/AN/AN/A
01/291212.8N/A4.710181010300802.02837334.2542.53020
01/281213.5N/A5.210141010338840.031079N/A542.63050
01/271214.1N/A5.710571050318888.031691N/A542.73050
01/261214.8N/A6.310511050355956.03238232.7542.83050
01/251215.4N/A6.8105310503471009.03297932.9543.06500
01/241216.1N/A7.4109710903531050.03257832.4N/AN/AN/A
01/231216.7N/A8.1109110903371125.03298631.7N/AN/AN/A
01/221217.4N/A8.8109110903861236.03449033.3544.36600
01/211218.0N/A9.1109410903801372.036110433.9544.66600
01/201218.6N/A9.5140314004101419.038612032.0544.94920
01/191219.4N/A10.1140414004561433.037012833.9545.14920
01/181220.2N/A10.8140414006591454.042618431.9N/AN/AN/A
01/171220.8N/A11.1108710907691479.052523931.2N/AN/AN/A
01/161221.1N/A11.2109010908331509.0589N/A31.4N/AN/AN/A
01/151221.3N/A11.2109510909301519.065922832.4545.74970
01/141221.5N/A11.1109610909941532.078126832.4545.84970
01/131221.6N/A10.91041103013461526.0103031832.2545.94970
01/121221.4N/A10.41043103021191496.0165052132.8546.04970
01/111220.5N/A9.31046103034831439.0275094134.5545.83490
01/101218.6N/A7.11091108012031337.0112033931.9N/AN/AN/A
01/091218.5N/A6.8107610805641316.0N/A8831.5N/AN/AN/A
01/081218.9N/A7.0108310804771315.04348932.6544.13250
01/071219.4N/A7.4109010805391318.042512231.4544.23250
01/061219.9N/A7.7139014004621318.039018933.5544.23250
01/051220.7N/A8.4140414004031328.036118932.4544.33250
01/041221.5N/A9.2139914006671344.049012631.8544.511600
01/031222.1N/A9.8139314008451360.067115031.4N/AN/AN/A
01/021222.5N/A10.21404140010441390.0N/AN/A30.4N/AN/AN/A
01/011222.8N/A10.51403140012981436.097423631.5N/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 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.