Home Archived February 7, 2019
Site Information
01398500   North Branch Raritan River near Far Hills, NJ
Location:Latitude 40�'30", Longitude 74�'10", Somerset County, Hydrologic Unit 02030105, on left bank 75 ft upstream from Ravine Lake Dam, 1.3 mi southeast of Peakpack, 1.6 mi north of Far Hills, and 2.3 mi upstream from Peapack Brook.
Drainage Area:Continuous Period of Record:RemarksSite Type:Baseline Period of Record:Baseline Quality
26.21921-2005Records formerly included diversion by small turbine at dam which returned to river 1,000 ft downstream from Ravine Lake Dam. Flow regulated occasionally by operation of waste gate in dam.C1921-2004EXCELLENT

Hydrologic Indices
Flow RegimeFlow EventIndex NameIndex Value
Index Type
Average FlowSurrogate for25th Percentile*Value75th Percentile*
Temporal MA11748.0957
Temporal MA2173357
Temporal MA378.45105.38139.79
Spatial MA415.5522.7223.27
Spatial MA51.51.461.81
Spatial MA6NC9.5NC
Spatial MA7NC4.33NC
Spatial MA8NC3.35NC
Spatial MA9NC0.64NC
Spatial MA10NC0.42NC
Spatialb MA11MA24NC0.35NC
Temporal MA1231.7448.5868.95
Temporal MA1341.1954.6173.88
Temporal MA1459.1873.94101.21
Temporal MA1549.6871.13107.95
Temporal MA1636.3651.970.08
Temporal MA1722.330.2745.88
Temporal MA1814.0421.4236.9
Temporal MA1911.4919.3632.95
Temporal MA2010.5919.2332.98
Temporal MA2113.2319.2630.9
Temporal MA2218.334.4256.13
Temporal MA2326.2339.0767.32
Temporalac MA2440.4257.4687.26
Temporal MA2538.6758.2692.31
Temporal MA2636.8355.0978.21
Temporal MA2729.544.1659.85
Temporal MA2833.8243.463.99
Temporal MA2932.4746.164.97
Temporal MA3036.1959.3990.61
Temporal MA3144.962.8688.21
Temporal MA3240.8772.29116.36
Temporal MA3334.6355.46104.83
Temporal MA3445.7768.45106.12
Temporal MA3542.5364.1385.73
Spatial MA36NC3.67NC
Spatial MA37NC-0.24NC
Spatial MA38NC-0.38NC
Spatial MA39NC-1.#IONC
Spatialb MA40MA24NC-1.#IONC
Temporal MA411.391.842.19
Spatial MA42NC1.5NC
Spatialb MA43MA24NC0.44NC
Spatial MA44NC0.78NC
Spatialb MA45MA24NC0NC
Low Flow
Temporalc ML116.52435
Temporalc ML219.52939
Temporalac ML3304048
Temporalc ML4344155
Temporalc ML521.52836
Temporalc ML6131724.5
Temporalc ML78.051116
Temporalc ML86.258.915
Temporalc ML95.79.515
Temporalc ML106.859.516
Temporalc ML119.751625
Temporalc ML12122231
Temporalb ML13ML3NC673.78NC
Temporal ML140.150.20.27
Temporal ML150.10.140.18
Temporal ML160.150.20.27
Temporal ML170.130.260.12
Spatial ML18NCNCNC
Temporalb ML19ML310.2913.618.17
Spatialb ML20ML3NC0.58NC
Spatial ML21NC94.79NC
Temporal ML220.170.240.33
High Flow
Temporal MH181.5186272
Temporal MH2106.5179277.5
Temporal MH3159.5250339
Temporal MH4104201292.5
Temporal MH581.5139217.5
Temporal MH64986188
Temporal MH738.565172.5
Temporal MH83561156
Temporal MH931.575204
Temporal MH103275153
Temporal MH1146149266.5
Temporalb MH12MH1486136300.5
Spatialb MH13MH14NC-674.45NC
Temporalac MH1410.2713.3721.51
Spatial MH15NC8.74NC
Spatialb MH16MH14NC2.88NC
Spatialb MH17MH14NC1.73NC
Spatial MH18NC8.55NC
Spatial MH19NC-0.36NC
Temporal MH2013.0219.1626.32
Temporal MH2112.515.9117.47
Temporal MH223.946.137.17
Temporal MH233.495.735.81
Temporal MH241.273.874.02
Temporal MH253.736.747.69
Temporal MH268.0511.9513.23
Temporal MH272.215.026
Index Type
Low FlowSurrogate for
Spatialac FL161013.5
Spatialb FL2FL1NC50.24NC
Temporalb FL3FL1000
High Flow
Temporal FH1141721
Spatial FH2NC34.73NC
Temporalbc FH3FH7162846
Temporalb FH4FH7259
Temporal FH5111619
Temporal FH691317
Temporala FH71.547
Temporal FH8141721
Temporal FH971014
Temporal FH10114
Temporalb FH11FH7012
Index Type
Low FlowSurrogate for
Temporal DL14.56.38.55
Temporal DL25.729.275.17
Temporal DL36.3910.365.68
Temporal DL48.7815.419.06
Temporalb DL5DL1615.0225.3712.76
Spatial DL6NC94.79NC
Spatialb DL9DL16NCNCNC
Spatial DL10NCNCNC
Temporal DL110.140.230.26
Temporal DL120.19-1.#IO0.17
Temporal DL130.27-1.#IO0.27
Temporalb DL14DL16NC0.52NC
Temporal DL15NC0.3NC
Temporalac DL165.347.8210.44
Spatialb DL17DL16NC59.28NC
Temporal DL18000
Spatial DL19NCNCNC
Spatial DL20NC2.16NC
High Flow
Temporalbc DH1DH11341502689.5
Temporal DH2205.5287.33421
Temporal DH3150196.14258.14
Temporal DH488.92118.69143.38
Temporal DH564.9285.06106.88
Spatial DH6NC52.7NC
Spatial DH7NC45.25NC
Spatial DH8NC40.88NC
Spatialb DH9DH11NC36.55NC
Spatial DH10NC31.69NC
Temporala DH1110.3316.6320.89
Temporal DH124.556.327.82
Spatial DH132.693.624.35
Spatialb DH14DH11NCNCNC
Temporal DH153.34.746.88
Spatial DH16NC48.99NC
Temporal DH177.6311.3315.85
Temporal DH181.652.153.07
Temporal DH1911.141.43
Temporal DH203.34.746.88
Temporal DH2115.9926.840.89
Temporal DH224883150.5
Temporalb DH23DH11123
Temporal DH2494158226.5
Index Type
Average FlowSurrogate for
Spatial TA10.430.420.55
Spatial TA257.7452.0564.06
Spatial TA3NC0.25NC
Low Flow
Spatialb TL1TL2246.84256.26262.49
Spatiala TL232.1732.6541.58
Spatial TL3NC0.79NC
Spatial TL40.029999990.04
High Flow
Spatial TH142.847.6370.44
Spatial TH264.5169.5471.59
Spatiala TH30.120.050.38
Rate of Change
Index Type
Average FlowSurrogate for
Temporalb RA1RA62624
Spatialb RA2RA6NC246.46NC
Temporalb RA3RA6-10-4-2
Spatialb RA4RA6NC-296.02NC
Spatial RA50.280.280.31
Temporalac RA60.080.190.53
Temporal RA7-0.24-0.12-0.06
Temporal RA8115122129.5
Spatial RA97.9117.1511.49

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