Home Archived February 7, 2019
Site Information
01403535   East Branch Stony Brook at Best Lake at Watchung, NJ
Location:Latitude 40�'24", Longitude 74�'52", Somerset County, Hydrologic Unit 02030105, 700 ft upstream from dam on Best Lake in Watchung, 1,400 ft upstream from mouth, and 1.4 mi west of Plainfield .
Drainage Area:Continuous Period of Record:RemarksSite Type:Baseline Period of Record:Baseline Quality
1.571979-2000Records given herein represent flow over dam and leakage through ports in dam.D1980-2000EXCELLENT

Hydrologic Indices
Flow RegimeFlow EventIndex NameIndex Value
Index Type
Average FlowSurrogate for25th Percentile*Value75th Percentile*
Temporal MA10.52.692.7
Temporal MA20.51.12.7
Temporal MA3133.05195.38255.82
Spatial MA419.2720.365.72
Spatial MA51.272.442.47
Spatial MA66.222051.29
Spatial MA72.947.6710.86
Spatial MA82.365.47
Spatialb MA9MA390.4131.432.55
Spatial MA100.2721.381.69
Spatial MA110.2117.691.41
Temporal MA121.73.184.42
Temporalbc MA13MA392.162.864.68
Temporal MA142.623.545.45
Temporal MA151.94.266.2
Temporal MA161.692.393.97
Temporal MA170.771.362.05
Temporal MA180.571.172.39
Temporal MA190.420.691.33
Temporal MA200.460.731.14
Temporal MA210.570.972.04
Temporal MA221.22.543.45
Temporal MA231.032.424.41
Temporal MA2480.27129.14194.27
Temporal MA2579.0190.68130.89
Temporal MA2676.1896.1110.31
Temporal MA2765.3198.23110.63
Temporal MA2873.04113.06138.06
Temporal MA2976.55121.76155.77
Temporal MA30121.12179.02227.95
Temporal MA3167.59122.03202.65
Temporal MA32100.97154.16235
Temporal MA3386.77130.94217.2
Temporal MA3493.07131.35172.95
Temporal MA3566.41111.94130.01
Spatial MA363.2206.47
Spatial MA370.8501.58
Spatial MA381.4802.77
Spatiala MA3952.34NC 91.65
Spatialb MA40MA390.1700.33
Temporal MA411.29NC 2.01
Spatial MA420.91.11.23
Spatial MA430.310.420.48
Spatialb MA44MA390.70.820.93
Spatial MA45-0.02NC 0.03
Low Flow
Temporalc ML10.30.541.05
Temporalc ML20.631.11.6
Temporalc ML30.7912.3
Temporalc ML40.841.41.85
Temporalc ML50.550.670.91
Temporalc ML60.240.360.57
Temporalc ML70.10.210.38
Temporalc ML80.120.210.38
Temporalc ML90.150.250.32
Temporalc ML100.150.30.46
Temporalc ML110.260.420.63
Temporalc ML120.470.60.86
Temporalb ML13ML2054.09520.6598.78
Temporal ML1400.070.18
Temporalbc ML15ML2000.030.07
Temporal ML1600.070.18
Temporal ML170.020.050.09
Spatial ML1841.5980.7194.03
Temporal ML1903.136.8
Spatiala ML200.320.330.69
Spatialb ML21ML2041.73108.05104.03
Temporal ML2200.060.12
High Flow
Temporalb MH1MH167.21938.5
Temporalbc MH2MH168.051421
Temporalb MH3MH16121832
Temporal MH47.62138.5
Temporal MH58.31426.5
Temporal MH62.959.515.5
Temporal MH73.351222
Temporal MH81.54.812
Temporal MH92.755.515.5
Temporal MH102.95.318.5
Temporal MH117.051432
Temporal MH122.58.432
Spatial MH1384.29-520.68121.17
Temporal MH1428.8249.4370.52
Spatial MH155.2225.4625.88
Spatiala MH162.534.915.3
Spatial MH171.582.462.38
Spatial MH188.7619.9314.44
Spatial MH19-0.19-0.960.72
Temporal MH2024.5232.4849.68
Temporalb MH21MH1625.983029.2
Temporal MH2212.3717.3818.24
Temporal MH2312.2315.9617.99
Temporal MH241.7710.2710.91
Temporal MH254.7113.4815.46
Temporal MH261020.0421.82
Temporal MH273.9112.714.55
Index Type
Low FlowSurrogate for
Spatialbc FL1FL3101215
Spatialb FL2FL339.0441.2263.45
Temporala FL3014
High Flow
Temporal FH118.52126
Spatial FH220.5528.9834.68
Temporalac FH341.57790
Temporal FH4132329.5
Temporalb FH5FH315.52026
Temporal FH6182027.5
Temporal FH79.51518
Temporal FH818.52126
Temporalb FH9FH3101215
Temporalb FH10FH3123.5
Temporalb FH11FH3011
Index Type
Low FlowSurrogate for
Temporal DL100.10.19
Temporal DL200.110.22
Temporal DL30.010.170.26
Temporalac DL40.150.270.48
Temporal DL50.550.881.41
Spatial DL641.73108.05104.03
Spatialb DL7DL438.36101.5698.59
Spatial DL836.6489.5990.53
Spatial DL935.1760.4478.06
Spatial DL1034.3654.4777.84
Temporalb DL11DL400.10.17
Temporal DL120.010.150.24
Temporal DL130.140.290.43
Temporal DL140.320.460.64
Temporal DL150.10.250.43
Temporalb DL16DL44.746.648.53
Spatial DL1737.3660.1171.88
Temporal DL18007.5
Spatial DL19NC 180.21NC
Spatial DL20NC 3.57NC
High Flow
Temporal DH138.55178
Temporalbc DH2DH1416.6727.6337.72
Temporal DH312.0617.2419.86
Temporal DH45.366.9710.31
Temporal DH53.464.917.1
Spatial DH641.2677.260.21
Spatial DH736.8659.5957.76
Spatial DH837.1347.0949.05
Spatial DH931.4740.6440.45
Spatial DH1029.8940.0937.96
Temporal DH113560.3970.91
Temporalb DH12DH1410.9614.9418.05
Spatial DH134.876.799.38
Spatiala DH140.0600.32
Temporal DH152.973.854.84
Spatial DH1633.9340.2969.21
Temporalb DH17DH146.568.6210.46
Temporal DH182.272.964.05
Temporal DH191.361.571.72
Temporal DH202.973.854.84
Temporal DH2116.4821.4326.04
Temporal DH2218.579152.75
Temporalb DH23DH14112.5
Temporal DH2458113197
Index Type
Average FlowSurrogate for
Spatial TA10.170.270.44
Spatial TA235.9743.8861
Spatial TA30.270.320.41
Low Flow
Spatiala TL1241.02240.63266.87
Spatial TL234.150.7744.78
Spatial TL30.430.430.59
Spatial TL40.010.030.11
High Flow
Spatial TH130.983.12111.47
Spatialb TH2TH362.7172.7774.66
Spatiala TH30.140.140.32
Rate of Change
Index Type
Average FlowSurrogate for
Temporalb RA1RA70.10.422.6
Spatial RA2187.13287.99274.94
Temporalb RA3RA7-0.71-0.2-0.06
Spatial RA4-372.11-407.56-184.77
Spatial RA50.240.270.27
Temporalb RA6RA70.120.341.08
Temporalac RA7-0.38-0.17-0.09
Temporalb RA8RA7114123131.5
Spatial RA97.1719.9712.75

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