Home Archived February 7, 2019
Site Information
01388000   Ramapo River at Pompton Lakes, NJ
Location:Latitude 40�'.1", Longitude 74�'.5", Passaic County, Hydrologic Unit 02030103, on right end of dam at pumping station in Pompton Lakes, 450 ft upstream from bridge on Paterson-Hamburg Turnpike, and 2.0 mi upstream from mouth.
Drainage Area:Continuous Period of Record:RemarksSite Type:Baseline Period of Record:Baseline Quality
1601921-2005Diversion by North Jersey District Water Supply Commission to Wanaque Reservoir since December 1953 and to Oradell Reservoir by United Water New Jersey since February 1985 for municipal supply. Slight regulation by Pompton Lake, capacity, 300,000,000 gal.A1921-1953EXCELLENT

Hydrologic Indices
Flow RegimeFlow EventIndex NameIndex Value
Index Type
Average FlowSurrogate for25th Percentile*Value75th Percentile*
Temporal MA183292.89363
Temporal MA283178363
Temporal MA393.72110.74151.25
Spatial MA415.5518.2523.27
Spatial MA51.51.651.81
Spatial MA69.2714.8122
Spatial MA74.136.318.25
Spatial MA83.014.375.36
Spatial MA90.450.520.67
Spatial MA100.290.360.44
Spatial MA110.240.290.35
Temporal MA12198.32305.42505.55
Temporal MA13241.57328.39447.75
Temporal MA14400.03574.39749.26
Temporal MA15336.65480.57702.37
Temporal MA16186.47379.74460.87
Temporal MA17110.08141.17281.93
Temporalac MA1855.19114154.36
Temporal MA1941.3269.32197.57
Temporal MA2042.5386.7245.45
Temporal MA2150.29105.48174.66
Temporal MA2275.53172.4398.9
Temporal MA23131266.1454.79
Temporal MA2441.7356.5474.75
Temporal MA2533.5743.171.21
Temporalb MA26MA1837.5450.9778.46
Temporal MA2741.6350.7865.43
Temporal MA2837.9745.2355.2
Temporal MA2937.4848.8660.02
Temporal MA3036.0658.9481.41
Temporal MA3136.0359.0391.84
Temporal MA3238.0971.14101.59
Temporal MA3327.7152.386.37
Temporal MA3439.2356.2497.13
Temporal MA3539.7162.181.89
Spatial MA364.226.866.16
Spatialb MA37MA181.031.331.56
Spatial MA381.912.422.67
Spatialb MA39MA1865.8579.5383.59
Spatial MA400.160.220.33
Temporal MA411.51.832.17
Spatial MA420.981.171.38
Spatial MA430.350.360.46
Spatial MA440.640.670.81
Spatial MA45000.04
Low Flow
Temporalc ML193.5140188.5
Temporalc ML2102.5139197
Temporalc ML3160224282.5
Temporalc ML4159202293.5
Temporalc ML595147217.5
Temporalac ML640.570109.5
Temporalc ML715.53669.5
Temporalc ML816.52659
Temporalc ML9193363
Temporalc ML1062864
Temporalc ML1138.571142.5
Temporalc ML126196186
Temporalb ML13ML660.1781.5982.11
Temporal ML140.030.090.18
Temporal ML150.020.060.1
Temporalb ML16ML60.030.090.18
Temporal ML170.020.090.12
Spatial ML1839.9176.5568.72
Temporal ML191.556.3110.13
Spatial ML200.440.510.55
Spatial ML2142.5587.5369.33
Temporal ML220.020.120.18
High Flow
Temporal MH14798751480
Temporal MH24467201255
Temporal MH3828.515002195
Temporal MH470112002095
Temporalac MH54877541250
Temporal MH6221334788.5
Temporal MH7116.5289657
Temporal MH883.5212655.5
Temporal MH996.5186999.5
Temporal MH1099248718.5
Temporal MH11132.55121750
Temporal MH122838601940
Spatial MH1393.81116.25114.16
Temporal MH1411.6514.0725.6
Spatial MH158.769.9413.21
Spatialb MH16MH53.083.584.07
Spatial MH171.762.042.22
Spatialb MH18MH54.946.776.87
Spatial MH19-0.070.570.41
Temporalb MH20MH511.5616.3128.63
Temporal MH2127.9732.4132.52
Temporal MH229.6411.614.86
Temporal MH234.188.59.04
Temporal MH241.244.645.29
Temporal MH253.597.078.33
Temporal MH268.0912.0213.26
Temporal MH272.716.117.26
Index Type
Low FlowSurrogate for
Spatialbc FL1FL35913
Spatial FL241.0384.5949.22
Temporala FL3003.5
High Flow
Temporalb FH1FH481215.5
Spatial FH225.9336.6535.5
Temporalbc FH3FH4364960
Temporala FH44816
Temporal FH581113
Temporal FH681113
Temporal FH7246.5
Temporal FH881215.5
Temporalb FH9FH45812.5
Temporal FH10115.5
Temporal FH11 NC NC NC
Index Type
Low FlowSurrogate for
Temporal DL131929.5
Temporal DL215.832535.33
Temporal DL322.1427.8639.36
Temporalac DL430.8737.1753.33
Temporal DL550.2279.52115.88
Spatialb DL6DL442.5587.5369.33
Spatial DL741.8165.1867.21
Spatial DL840.0364.8262.6
Spatial DL946.6773.9574.66
Spatial DL1045.7772.3772.12
Temporal DL110.020.110.17
Temporalb DL12DL40.120.190.22
Temporal DL130.170.280.3
Temporal DL140.420.470.58
Temporal DL150.210.240.34
Temporalb DL16DL45.1510.217.86
Spatial DL1748.970.6868.18
Temporal DL18000
Spatial DL19 NC 497.02 NC
Spatial DL20NC0NC
High Flow
Temporal DH1185026104580
Temporalac DH21502.8319703030
Temporal DH31089.291504.291834.71
Temporal DH4692.82789.33982.13
Temporal DH5489.62585.28639.88
Spatial DH641.8761.9857.44
Spatial DH739.6649.6649.95
Spatialb DH8DH233.2842.2841.55
Spatial DH926.1533.1333.42
Spatial DH1025.3724.5929.39
Temporal DH1110.3918.725.73
Temporal DH126.128.8810.31
Spatialb DH13DH23.894.735.52
Spatial DH140.10.130.21
Temporal DH155.977.259.5
Spatial DH1630.5644.0846.84
Temporal DH1712.341826.33
Temporal DH183.524.55.86
Temporal DH191.5522.44
Temporalb DH20DH25.977.259.5
Temporal DH2122.3231.3850.6
Temporal DH22 NC NC NC
Temporal DH23 NC NC NC
Temporal DH24 NC NC NC
Index Type
Average FlowSurrogate for
Spatial TA10.430.490.55
Spatial TA257.7460.9264.06
Spatial TA3 NC NC NC
Low Flow
Spatiala TL1246.84256.49262.49
Spatial TL232.1738.2341.58
Spatial TL3 NC NC NC
Spatial TL4 NC NC NC
High Flow
Spatiala TH142.851.2370.44
Spatial TH264.5161.2771.59
Spatial TH3 NC NC NC
Rate of Change
Index Type
Average FlowSurrogate for
Temporal RA1929100
Spatial RA2211.25265.22271.7
Temporalac RA3-61-24-10
Spatial RA4-289.34-252.19-225.38
Spatialb RA5RA30.280.310.31
Temporal RA60.080.190.46
Temporalb RA7RA3-0.21-0.12-0.07
Temporalb RA8RA394.5111140.5
Spatial RA97.9123.0211.49

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