Home Archived February 7, 2019
Site Information
01464000   Assunpink Creek at Trenton, NJ
Location:Latitude 40�'27", Longitude 74�'57", Mercer County, Hydrologic Unit 02040105, on left bank 20 ft upstream from bridge on Chambers Street (Lincoln Avenue) in Trenton, and 1.5 mi upstream from mouth .
Drainage Area:Continuous Period of Record:RemarksSite Type:Baseline Period of Record:Baseline Quality
911921-1954Records include water diverted from outside the basin since February 1954 for municipal supply which returns to Assunpink Creek through Ewing-Lawrence Sewerage Authority Treatment Plant, 2.4 mi above station.A1923-1956EXCELLENT

Hydrologic Indices
Flow RegimeFlow EventIndex NameIndex Value
Index Type
Average FlowSurrogate for25th Percentile*Value75th Percentile*
Temporal MA143118.05140
Temporal MA24378140
Temporal MA380.54103.7135.92
Spatial MA415.5517.7523.27
Spatial MA51.51.511.81
Spatial MA69.279.522
Spatial MA74.134.248.25
Spatial MA83.013.265.36
Spatial MA90.450.520.67
Spatial MA100.290.330.44
Spatial MA110.240.270.35
Temporal MA1286.05130.24174.58
Temporal MA13131.53172.66221.28
Temporal MA14147.4180.39236.16
Temporal MA1594.64155.15205.34
Temporal MA1665.11106.9137.98
Temporal MA1745.266.3596.41
Temporalac MA1830.4755.45107.86
Temporal MA1930.157.3996.54
Temporal MA2027.262.65122.96
Temporal MA2141.7656.4774.39
Temporal MA2255.8194.47142.74
Temporal MA2378.7120.23150.14
Temporal MA2441.3355.3872.04
Temporal MA2543.5962.4980.75
Temporalb MA26MA1842.6753.6771.11
Temporal MA2740.3558.4467.29
Temporal MA284254.6762.04
Temporal MA2941.4356.0179
Temporal MA3031.6157.8997.41
Temporal MA3146.761.1793.8
Temporal MA3235.9551.73105.63
Temporal MA3332.5251.6388.37
Temporal MA3435.2647.2971.3
Temporal MA3542.861.2678.36
Spatial MA364.224.196.16
Spatialb MA37MA181.031.121.56
Spatial MA381.912.012.67
Spatialb MA39MA1865.8565.7383.59
Spatial MA400.160.210.33
Temporal MA4111.31.62
Spatial MA420.9811.38
Spatial MA430.350.490.46
Spatial MA440.640.720.81
Spatial MA4500.020.04
Low Flow
Temporalc ML140.756272.25
Temporalc ML249.256793.25
Temporalc ML365.258198.25
Temporalc ML448.7569.590
Temporalc ML527.254364.25
Temporalac ML617.752637.5
Temporalc ML713.2519.525.75
Temporalc ML81316.535.25
Temporalc ML913.523.533
Temporalc ML10162637
Temporalc ML1132.2542.562
Temporalc ML12335169.75
Temporalb ML13ML660.1767.0282.11
Temporal ML140.140.170.23
Temporal ML150.090.120.16
Temporalb ML16ML60.140.170.23
Temporal ML170.10.120.16
Spatial ML1839.9136.7168.72
Temporal ML198.9811.8815.56
Spatial ML200.440.490.55
Spatial ML2142.5542.8469.33
Temporal ML220.10.170.21
High Flow
Temporal MH1217.75324.5587.75
Temporal MH2337.5501.5705.75
Temporal MH3356.5522748.75
Temporal MH4219.5385.5599
Temporalac MH5158.25285.5472
Temporal MH6102.75204.5326
Temporal MH755.75149430.5
Temporal MH869174479.75
Temporal MH962.75153.5437.5
Temporal MH1094.25143.5209
Temporal MH11102.5287472
Temporal MH12198.5368.5548.25
Spatial MH1393.8191.81114.16
Temporal MH149.4711.1517.11
Spatial MH158.768.6113.21
Spatialb MH16MH53.083.174.07
Spatial MH171.761.82.22
Spatialb MH18MH54.946.476.87
Spatial MH19-
Temporalb MH20MH57.810.4615.6
Temporal MH2113.5519.8123.54
Temporal MH225.928.469.46
Temporal MH232.476.747.06
Temporal MH241.323.914.76
Temporal MH253.746.217.37
Temporal MH267.910.7211.28
Temporal MH272.264.75.62
Index Type
Low FlowSurrogate for
Spatialbc FL1FL37.759.516
Spatial FL241.0382.449.22
Temporala FL3000
High Flow
Temporalb FH1FH41214.518.25
Spatial FH225.9328.235.5
Temporalbc FH3FH420.7537.556.5
Temporala FH42610.5
Temporal FH510.751316
Temporal FH67.751114
Temporal FH7135
Temporal FH81214.518.25
Temporalb FH9FH471017
Temporal FH1012.56
Temporal FH11001
Index Type
Low FlowSurrogate for
Temporal DL191519.25
Temporal DL21216.1720.33
Temporal DL31519.3623.82
Temporalac DL419.4925.3237.18
Temporal DL532.4547.6759.37
Spatialb DL6DL442.5542.8469.33
Spatial DL741.8139.1167.21
Spatial DL840.0345.7962.6
Spatial DL946.6750.1974.66
Spatial DL1045.7752.3772.12
Temporal DL110.120.180.25
Temporalb DL12DL40.190.270.31
Temporal DL130.250.380.48
Temporal DL140.420.550.58
Temporal DL150.210.330.34
Temporalb DL16DL44.617.8611.25
Spatial DL1748.951.4268.18
Temporal DL18000
Spatial DL19NC0NC
Spatial DL20NC0NC
High Flow
Temporal DH17109521420
Temporalac DH2575768.081086.33
Temporal DH3407.27517.71680.75
Temporal DH4229.56280.58329.86
Temporal DH5166.39189.97247.51
Spatial DH641.8748.7457.44
Spatial DH739.6644.0749.95
Spatialb DH8DH233.2836.8741.55
Spatial DH926.1528.5533.42
Spatial DH1025.3727.2429.39
Temporal DH119.113.7818.21
Temporal DH125.227.278.73
Spatialb DH13DH22.943.694.23
Spatial DH140.10.220.21
Temporal DH154.255.427.07
Spatial DH1630.5638.5146.84
Temporal DH179.5713.2418.46
Temporal DH182.833.614
Temporal DH191.522.25
Temporalb DH20DH24.255.427.07
Temporal DH2117.8726.5540.27
Temporal DH2235.13114.75189
Temporal DH23122.5
Temporal DH2491130250.5
Index Type
Average FlowSurrogate for
Spatial TA10.430.510.55
Spatial TA257.7459.8664.06
Spatial TA30.250.250.36
Low Flow
Spatiala TL1246.84236.35262.49
Spatial TL232.1734.8141.58
Spatial TL30.460.510.6
Spatial TL40.020.040.04
High Flow
Spatiala TH142.839.6170.44
Spatial TH264.5169.9471.59
Spatial TH30.120.170.38
Rate of Change
Index Type
Average FlowSurrogate for
Temporal RA141345
Spatial RA2211.25210.88271.7
Temporalac RA3-25-10-4
Spatial RA4-289.34-202.73-225.38
Spatialb RA5RA30.280.310.31
Temporal RA60.070.190.48
Temporalb RA7RA3-0.23-0.12-0.07
Temporalb RA8RA3102.75113.5133.5
Spatial RA97.9120.0111.49

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