Home Archived February 7, 2019
Site Information
01381500   Whippany River at Morristown, NJ
Location:Latitude 40�'26", Longitude 74�'25", Morris County, Hydrologic Unit 02030103, on left bank at Morristown sewage-treatment plant, 0.8 mi northeast of Morristown, and 9.0 mi upstream from mouth.
Drainage Area:Continuous Period of Record:RemarksSite Type:Baseline Period of Record:Baseline Quality
29.41921-2005Flow occasionally regulated by operation of gates in Pocahontas Dam, 2.5 miles upstream of gage and Speedwell Lake 3.4 mi upstream of gage. Storm sewers entering the river in Morristown can cause sharp rises in stage, and peak flow frequency increased after route I-287 was constructed in 1970.C1921-1952EXCELLENT

Hydrologic Indices
Flow RegimeFlow EventIndex NameIndex Value
Index Type
Average FlowSurrogate for25th Percentile*Value75th Percentile*
Temporal MA12050.7159
Temporal MA2203559
Temporal MA382.5999.63135.96
Spatial MA419.219.6165.72
Spatial MA51.271.452.47
Spatial MA66.227.5451.29
Spatial MA72.943.7810.86
Spatial MA82.362.957
Spatial MA90.410.572.55
Spatial MA100.270.371.69
Spatialb MA11MA240.210.31.41
Temporal MA1240.6849.7366.84
Temporal MA1341.8460.5977.13
Temporal MA1462.4580.68102.48
Temporal MA1553.5170.25105.34
Temporal MA1639.6557.1875.9
Temporal MA1728.2837.9552.73
Temporal MA1818.9827.3146.81
Temporal MA1916.6826.7639.34
Temporal MA2015.7820.7742.42
Temporal MA2115.1925.4735.08
Temporal MA2219.2636.5958.55
Temporal MA2326.7140.1569.5
Temporalac MA2439.2962.9891.04
Temporal MA2534.3654.4684.27
Temporal MA2639.4359.7684.15
Temporal MA2736.8152.3355.42
Temporal MA2831.3145.0863.57
Temporal MA2937.3652.6868.82
Temporal MA3041.5166.45102.2
Temporal MA3141.7260.6984.68
Temporal MA3236.5479.63103.08
Temporal MA3325.652.54103.29
Temporal MA3437.868.73118.77
Temporal MA3550.0371.5392.7
Spatial MA363.224.856.47
Spatial MA370.851.021.58
Spatial MA381.481.92.77
Spatial MA3952.3462.7991.65
Spatialb MA40MA240.170.180.33
Temporal MA411.51.721.95
Spatial MA420.91.241.23
Spatialb MA43MA240.310.280.48
Spatial MA440.70.680.93
Spatialb MA45MA24-
Low Flow
Temporalc ML118.2523.536.75
Temporalc ML22129.540
Temporalac ML329.54149.5
Temporalc ML43439.553.5
Temporalc ML5232938.25
Temporalc ML6142027
Temporalc ML71113.518
Temporalc ML810.2512.519.5
Temporalc ML98.91318
Temporalc ML109.61318.75
Temporalc ML111216.524
Temporalc ML12122030
Temporalb ML13ML354.0957.398.78
Temporal ML140.240.280.34
Temporal ML150.160.190.24
Temporal ML160.240.280.34
Temporal ML170.170.220.3
Spatial ML1841.5931.2694.03
Temporalb ML19ML315.8119.0523.79
Spatialb ML20ML30.320.570.69
Spatial ML2141.7339.01104.03
Temporal ML220.270.30.43
High Flow
Temporal MH198.75186.5256.25
Temporal MH2101.75193258.5
Temporal MH3193.75265.5367.75
Temporal MH4122220.5316.5
Temporal MH594.25148226
Temporal MH662.595.5200.75
Temporal MH759.592292.25
Temporal MH850.584.5181.25
Temporal MH93280229.5
Temporal MH1036.7559.5204.5
Temporal MH1154.25183300.75
Temporalb MH12MH1490.25167304.75
Spatialb MH13MH1484.2989.73121.17
Temporalac MH149.6212.9718.13
Spatial MH155.228.2925.88
Spatialb MH16MH142.532.85.3
Spatialb MH17MH141.581.692.38
Spatial MH188.767.5214.44
Spatial MH19-0.190.520.72
Temporal MH2011.6513.9825.03
Temporal MH2113.913.9314.28
Temporal MH224.285.355.21
Temporal MH232.3755.16
Temporal MH241.313.764.59
Temporal MH253.896.437.32
Temporal MH267.9711.2111.54
Temporal MH272.24.725.71
Index Type
Low FlowSurrogate for
Spatialac FL17.251116.75
Spatialb FL2FL139.0454.1963.45
Temporalb FL3FL1000
High Flow
Temporal FH115.518.524
Spatial FH220.5535.0434.68
Temporalbc FH3FH72225.542.25
Temporalb FH4FH734.58
Temporal FH513.251921
Temporal FH6101417.75
Temporala FH7246
Temporal FH815.518.524
Temporal FH98.251315.75
Temporal FH1011.53
Temporalb FH11FH7001
Index Type
Low FlowSurrogate for
Temporal DL188.8512.75
Temporal DL28.269.6812.75
Temporal DL38.7811.0713.36
Temporal DL411.0114.2216.93
Temporalb DL5DL1615.7720.8630.31
Spatial DL641.7339.01104.03
Spatial DL738.3636.898.59
Spatial DL836.6446.4290.53
Spatialb DL9DL1635.1750.7978.06
Spatial DL1034.3650.1277.84
Temporal DL110.230.290.36
Temporal DL120.250.340.38
Temporal DL130.310.460.48
Temporalb DL14DL160.320.570.64
Temporal DL150.10.370.43
Temporalac DL165.57.339
Spatialb DL17DL1637.3640.2471.88
Temporal DL18000
Spatial DL19NC0NC
Spatial DL20NC0NC
High Flow
Temporalbc DH1DH11342.5411736
Temporal DH2209.83259424.25
Temporal DH3154.64185.85256.71
Temporal DH490.1121.39138.86
Temporal DH570.0285.3106.23
Spatial DH641.2650.4460.21
Spatial DH736.8647.4357.76
Spatial DH837.1340.0249.05
Spatialb DH9DH1131.4732.440.45
Spatial DH1029.8927.3437.96
Temporala DH119.7915.321.03
Temporal DH124.426.087.34
Spatial DH132.573.443.97
Spatialb DH14DH110.060.270.32
Temporal DH153.024.576.47
Spatial DH1633.9363.8169.21
Temporal DH177.351014.89
Temporal DH181.712.072.39
Temporal DH19111.33
Temporal DH203.024.576.47
Temporal DH2114.1420.4235.19
Temporal DH229.1715.7497.09
Temporalb DH23DH11123
Temporal DH24166277314
Index Type
Average FlowSurrogate for
Spatial TA10.170.470.44
Spatial TA235.9757.6161
Spatial TA30.270.330.41
Low Flow
Spatialb TL1TL2241.02266.4266.87
Spatiala TL234.130.9844.78
Spatial TL30.430.490.59
Spatial TL40.010.030.11
High Flow
Spatial TH130.9869.58111.47
Spatial TH262.7170.3574.66
Spatiala TH30.140.160.32
Rate of Change
Index Type
Average FlowSurrogate for
Temporalb RA1RA62728
Spatialb RA2RA6187.13217.26274.94
Temporalb RA3RA6-12-4-2
Spatialb RA4RA6-372.11-265.36-184.77
Spatial RA50.240.290.27
Temporalac RA60.080.20.55
Temporal RA7-0.25-0.12-0.06
Temporal RA8119125130.5
Spatial RA97.176.3712.75

a primary index as determined from the New Jersey Hydrologic Integrity Assessment Process (Henriksen and others, 2006; Kennen and others, 2007)
b surrogate index as determined from the New Jersey Hydrologic Integrity Assessment Process (Henriksen and others, 2006; Kennen and others, 2007)
c primary regulatory index for the New Jersey Department of Environmental Protection (J.L. Hoffman, NJDEP, written commun., 2007).

# indicates that site is an index station

* If the index is spatial, percentile values are from the distribution of values for the selected index for all sites of the same stream type if the index is spatial

** These sites are index sites, which are considered to be relatively undeveloped (least amount of urbanization, less than 15% urban landuse) for a long period of record (at least 50 years). The entire period of record for these sites are considered baseline.

NC value could not be calculated