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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)
05/241210.1-11.9-14.3533530317608.022950N/A548.221925
05/231210.3-11.7-14.1568530375611.025556N/A548.327724
05/221210.6-11.4-13.8581580361617.026761N/AN/AN/AN/A
05/211210.8-11.2-13.7581580411624.028662N/AN/AN/AN/A
05/201211.0-11.0-13.5580580460638.0N/AN/AN/A548.621725
05/191211.1-10.9-13.4578580483639.0N/AN/AN/AN/AN/AN/A
05/181211.3-10.8-13.3683680562646.041588N/AN/AN/AN/A
05/171211.4-10.6-13.1686680743653.0481103N/A548.721925
05/161211.4-10.6-13.1692680673660.0519128N/A548.721926
05/151211.4-10.5-13.1777770732671.0504158N/AN/AN/AN/A
05/141211.5-10.4-13.0777770526687.0394117N/AN/AN/AN/A
05/131211.8-10.2-12.7769770517725.033086N/A548.721926
05/121212.0-10.0-12.4772770440799.033577N/A548.721925
05/111212.4-9.6-12.0887890473882.037989N/AN/AN/AN/A
05/101212.8-9.2-11.5972890713909.0435106N/A548.821925
05/091213.1-8.9-11.1898890691929.0516139N/A548.822226
05/081213.3-8.7-11.0988990727963.0539138N/AN/AN/AN/A
05/071213.6-8.4-10.79949907421020.0N/A122N/AN/AN/AN/A
05/061213.8-8.2-10.69979907321030.0528105N/AN/AN/AN/A
05/051214.1-8.0-10.49989908401037.0638123N/A548.522524
05/041214.2-7.8-10.21203120011811040.0793155N/A548.422524
05/031214.3-7.7-10.11210120014861045.01080246N/A548.323324
05/021214.1-7.9-10.2120712007491053.0594172N/AN/AN/AN/A
05/011214.5-7.5-9.6127812904021117.029964N/AN/AN/AN/A
04/301215.3N/A-8.6129212903661166.0N/A61N/AN/AN/AN/A
04/291216.2N/A-7.6129512904111200.033967N/A547.921724
04/281216.9N/A-6.7129612905141246.039678N/A547.921724
04/271217.6N/A-5.8139814006641310.047910028.5548.034924
04/261218.2N/A-5.0135814005551335.03738327.9548.034924
04/251218.9N/A-3.8138314004181360.03166327.4N/AN/AN/A
04/241219.7N/A-2.6139114004111406.03456827.0N/AN/AN/A
04/231220.5N/A-1.3140214005311437.03797530.6N/AN/AN/A
04/221221.2N/A0.2140414005901447.03998028.6548.634924
04/211221.9N/A1.6142014008141453.04318528.5548.734924
04/201222.4N/A2.6152215804911457.04779530.6548.850924
04/191223.2N/A4.0158215807001475.052510828.1549.051424
04/181223.9N/A5.1152015807591492.057312130.5549.351424
04/171224.5N/A6.3141414109781523.065014429.7N/AN/AN/A
04/161224.8N/A7.5142714109881572.076618029.6N/AN/AN/A
04/151225.2N/A8.81666141012241636.094022328.8549.752324
04/141225.5N/A9.92094141016491652.0123032431.9549.853224
04/131225.8N/A10.92551140027461656.0186064930.5549.855024
04/121225.7N/A11.51660140029251630.0226078429.7549.061124
04/111224.8N/A11.31403140012971619.087425932.1548.350424
04/101224.9N/A12.11400140012941722.097922829.6N/AN/AN/A
04/091225.0N/A12.71399140017251935.0N/A32530.5N/AN/AN/A
04/081224.8N/A13.11390140024392007.0177055129.6N/AN/AN/A
04/071224.0N/A13.11389140010221954.078521232.1N/AN/AN/A
04/061224.3N/A14.2139714009621939.065613931.5N/AN/AN/A
04/051224.7N/A15.5139914009281925.077716630.4N/AN/AN/A
04/041225.0N/A16.81427140013211913.0102019031.3N/AN/AN/A
04/031225.1N/A18.01440140017331890.0143024730.9N/AN/AN/A
04/021224.9N/A18.71419140026681849.0N/AN/A30.2N/AN/AN/A
04/011224.0N/A18.71421140018731803.0155031630.1N/AN/AN/A
03/311223.7N/A19.31421140013791788.0105020832.1N/AN/AN/A
03/301223.8N/A20.31421140018011792.0134024731.6545.61800
03/291223.5N/A20.81412140024341780.0189036232.4N/AN/AN/A
03/281222.7N/A20.91406140013971757.0114021030.2N/AN/AN/A
03/271222.8N/A21.81398140013251801.0102019231.6N/AN/AN/A
03/261222.8N/A22.21324140017941927.0N/A27531.3N/AN/AN/A
03/251222.5N/A22.31404140013322058.0111024730.3544.22090
03/241222.6N/A22.6140914008232038.058413931.6544.16160
03/231223.0N/A23.1177117707902031.060913331.0544.48060
03/221223.8N/A24.1177117709412031.068214231.0N/AN/AN/A
03/211224.4N/A24.81779177010112030.082016330.8545.38120
03/201225.0N/A25.61689155012112028.0102022931.4N/AN/AN/A
03/191225.4N/A25.92147155017002026.0N/AN/A29.1N/AN/AN/A
03/181225.7N/A26.42579155024332026.0199035932.0546.28290
03/171225.8N/A26.72216155029122002.0253041059.8546.38350
03/161225.4N/A26.21659140017161921.0149029030.8546.58230
03/151225.3N/A26.31665140017551871.0144031030.8546.88290
03/141225.3N/A26.51510140019671821.0159032330.7547.08290
03/131225.0N/A26.31411140026061766.0196041531.2N/AN/AN/A
03/121224.1N/A25.51419140043721690.0N/AN/A30.9N/AN/AN/A
03/111221.9N/A23.21361140076991559.05730132031.7N/AN/AN/A
03/101216.8N/A18.11407140038661323.0320055031.1546.08460
03/091214.7N/A16.0139914008491215.068520932.7545.88170
03/081215.2N/A16.6139514005811216.046713530.6546.18120
03/071215.9N/A17.2139814005431233.046112032.9546.48130
03/061216.7N/A18.2139914005601265.049112730.1N/AN/AN/A
03/051217.4N/A18.9140014006391336.054915230.6N/AN/AN/A
03/041218.0N/A19.2140314005101433.065619632.1N/AN/AN/A
03/031218.8N/A19.71401140012751447.078922431.2547.78230
03/021218.9N/A19.51395140014481417.097529332.9548.28770
03/011218.9N/A19.31402140014841379.0109034629.9548.48400
02/291218.9N/A19.21408140014321339.0108035532.4548.48400
02/281218.9N/A19.11090108017661301.0125037031.2N/AN/AN/A
02/271218.3N/A18.41095108026901252.0176060431.7N/AN/AN/A
02/261217.0N/A16.91111108051281174.03160108033.2548.78770
02/251213.5N/A13.11188108057011014.0451097832.7547.09440
02/241209.2N/A8.610651070747835.056021934.8546.08060
02/231209.5N/A8.810931070625822.0-999999-99999933.4546.55090
02/221210.0N/A9.211061070782813.0-999999-99999934.7546.55050
02/211210.4N/A9.310781020902798.0-999999-99999933.7N/AN/AN/A
02/201210.6N/A9.010851020958781.0-999999-99999933.0N/AN/AN/A
02/191210.7N/A8.9108710201137762.0-999999-99999935.0546.55090
02/181210.7N/A8.7110210201700737.0N/AN/A34.2N/AN/AN/A
02/171210.1N/A8.0109310601732696.0-999999-99999935.4N/AN/AN/A
02/161209.5N/A7.110581060466660.0-999999-99999934.3546.53350
02/151210.1N/A7.410581060230670.0971-99999933.0545.93660
02/141210.9N/A7.810631070245690.0695N/A30.8N/AN/AN/A
02/131211.8N/A8.210661070311713.0N/AN/A32.0544.93180
02/121212.5N/A8.710701070330736.0290-99999932.7545.33180
02/111213.2N/A9.010771070460770.0332-99999931.3545.43180
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.