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Streamflow Measurements for the Nation


USGS 01100000 MERRIMACK RIVER BL CONCORD RIVER AT LOWELL, MA


Middlesex County, Massachusetts
Hydrologic Unit Code 01070006
Latitude  42°38'45", Longitude  71°17'56" NAD27
Drainage area 4,635  square miles
Contributing drainage area 4,421  square miles
Gage datum 4.37 feet above NAVD88
Output formats
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HTML table without channel data
Tab-separated data with channel data
Tab-separated data without channel data
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Meas.
Number
  Date       Time Time
Datum
Measurement
Used?
  Who Measuring
Agency
Stream
flow
(ft3/s)
Gage
Height
(ft)
GH
Change
(ft)
Meas.
Duration
(hr)
Meas.
Rated
  Control Flow
Adjust.
Code
 
5732021-09-14 11:20:16EDTYesAGM/TMGUSGS784044.21-0.050.30FairClearNONE
5722021-06-23 12:45:43EDTYesAGM/TMGUSGS207042.040.020.32GoodClearNONE
5712021-06-23 11:43:41EDTYesAGM/TMGUSGS202042.010.030.30GoodClearNONE
5702021-03-30 13:27:21EDTYesAGWUSGS2110047.300.000.33FairClearNONE
5692021-02-22 12:33:27ESTYesAGWUSGS492043.16-0.030.25FairClearNONE
5682020-10-28 10:34:40EDTYesAGW/RTBUSGS312042.380.000.33FairClearNONE
5672020-08-04 10:20:41EDTYesAGWUSGS123041.470.000.50FairClearNONE
5662020-06-24 10:13:36EDTYesAGW/GEMUSGS174041.820.000.25GoodClearNONE
5652020-02-12 14:51:40ESTYesAGW/AGMUSGS791044.00-0.010.25FairClearNONE
5642019-11-26 10:25ESTYesAGW/JDLUSGS1270045.49-0.010.25FairClearNONE
5632019-10-08 15:56:09EDTYesAGW/JDLUSGS126041.550.000.33FairClearNONE
5622019-08-06 14:36:43EDTYesAGW/MCUUSGS188041.920.000.25FairClearNONE
5612019-06-10 13:44:18EDTYesAGW/AGMUSGS765044.070.000.25FairClearNONE
5602019-04-01 15:49:54EDTYesCAS, GEMUSGS1600046.300.010.25FairClearNONE
5592019-02-07 14:28:46ESTYesCAS, GEMUSGS1270045.41-0.030.25GoodClearNONE
5582018-12-07 11:13:20ESTYesCAS, AGWUSGS1880046.99-0.030.20GoodClearNONE
5572018-11-07 09:29:54ESTYescpy.USGS2810049.19-0.010.30FairClearNONE
5562018-09-20 14:07:45EDTYesCAS, LRRUSGS1150045.18-0.160.25FairClearNONE
5552018-07-19 15:12:43EDTYesCAS, GEMUSGS224042.150.010.20FairClearNONE
5542018-05-01 11:47:48EDTYescpyUSGS2040047.310.000.20FairClearNONE
5532018-02-28 13:33:21ESTYesCAS, CPYUSGS1450045.880.060.25FairClearNONE
5522018-01-11 11:38:59ESTYescpy/tgUSGS439043.010.010.25FairIceAnchorNONE
5512017-10-31 12:40:26EDTYesGEM/ANYUSGS3260050.130.060.30FairClearNONE
5502017-10-20 09:52:47EDTYesCPY/ANY/TMGUSGS224042.240.010.25FairClearNONE
5492017-08-07 16:20:04EDTYesCPY/ANYUSGS280042.420.000.25FairClearNONE
5482017-05-26 11:02:09EDTYescpy/anyUSGS1040044.930.030.25FairClearNONE
5472017-04-26 11:51:20EDTYesRTB/CYPUSGS1490046.050.03 GoodUnspecifedNONE
5462017-03-09 10:55:07ESTYescy/jcUSGS969044.540.000.25FairClearMEAS
5452016-12-14 12:42:17ESTYesLRRUSGS351042.790.000.30FairClearNONE
5442016-10-17 16:41:01EDTYesLRRUSGS111041.500.010.20FairClearNONE
5432016-10-17 15:55:40EDTYesLRRUSGS106041.500.020.30FairClearNONE
5422016-08-23 15:59:23EDTYesLRRUSGS155041.750.090.20GoodClearNONE
5412016-08-23 15:29:51EDTYesLRRUSGS143041.680.060.20GoodClearNONE
5402016-06-09 16:00EDTYesCSTUSGS542043.19 PoorClearNONE
5392016-04-13 14:10EDTYesCSTUSGS1060044.790.040.50GoodClearNONE
5382016-02-16 13:11:28ESTYesCSTUSGS542043.340.020.30FairClearNONE
5372015-12-10 14:34:14ESTYesCSTUSGS421042.990.000.30GoodUnspecifedNONE
5362015-10-19 14:42:27EDTYesLRR/CSTUSGS215042.130.000.20FairClearNONE
5352015-08-18 14:13:03EDTYesLRR/CSTUSGS167041.920.02 FairClearNONE
5342015-06-17 13:22:25EDTYesLRRUSGS380042.760.010.30GoodClearNONE
5332015-06-17 12:54:30EDTYesLRRUSGS368042.740.010.20GoodClearNONE
5322015-04-15 12:53:49EDTYesLRRUSGS2300047.850.010.30FairClearNONE
5312015-02-19 13:43:15ESTYesLRRUSGS467043.180.000.40FairClearNONE
5302014-12-08 12:37:23ESTYesLRRUSGS1120045.090.000.30GoodClearNONE
5292014-10-20 13:50:01EDTYesLRRUSGS771044.180.040.80FairClearNONE
5282014-08-14 14:26:33EDTYesLRRUSGS805044.220.010.20GoodClearNONE
5272014-06-16 12:57:14EDTYesLRRUSGS596043.520.020.20GoodClearNONE
5262014-04-10 12:53:30EDTYesLRRUSGS3560050.380.000.40FairClearNONE
5252014-02-04 12:34:08ESTYesLRRUSGS533043.330.000.40FairClearNONE
5242013-10-18 13:56:20EDTYesLRRUSGS228042.240.010.30GoodClearNONE
5232013-09-10 14:26:28EDTYesLRRUSGS318042.640.000.30FairClearNONE
5222013-08-16 12:39:56EDTNo
5212013-06-13 11:03:16EDTYesLRRUSGS2230047.820.000.30FairClearNONE
5202013-04-01 11:40:39EDTYesLRRUSGS1380045.690.000.20FairClearNONE
5192013-04-01 10:58:43EDTYesLRRUSGS1370045.670.000.30FairClearNONE
5182013-03-14 11:09:30EDTYesLRRUSGS2110047.450.030.40FairClearNONE
5172013-03-14 10:25:50EDTYesLRRUSGS2100047.400.030.20FairClearNONE
5162013-02-07 14:07:30ESTYesLRRUSGS620043.590.010.30Good NONE
5152013-02-07 13:18ESTYesLRRUSGS617043.600.010.30Good NONE
5142012-12-03 16:23ESTYesLRR/AMWUSGS334042.67-0.010.30GoodClearNONE
5132012-12-03 15:37:30ESTYesLRR/AMWUSGS347042.77-0.080.30GoodClearOTHR
5122012-10-10 12:14:30EDTYesLRR/AMWUSGS308042.500.050.50FairClearNONE
5112012-07-31 10:17:30EDTYesRTB/AWUSGS276042.400.000.30FairClearNONE
5102012-06-12 09:37EDTYesCRLUSGS872044.320.000.30GoodClearNONE
5092012-04-16 10:57EDTYesCRLUSGS356042.710.050.40FairClearNONE
5082012-04-16 10:19EDTYesCRLUSGS328042.610.030.30FairClearNONE
5072012-02-14 11:23:30ESTYesGWP/JYCUSGS502043.26-0.010.30FairClearNONE
5062012-01-09 15:54:30ESTYesGWP/SGOUSGS903044.35-0.030.80FairClearNONE
5052010-11-10 10:38:30ESTYesGWP/JYCUSGS1020044.610.000.30FairClearNONE
5042010-08-12 10:15EDTYesAMW/LYCUSGS178041.840.030.60GoodClearNONE
5032010-08-12 08:25EDTYesAMWUSGS127041.570.030.80FairClearNONE
5022010-04-23 11:35EDTYesLYC/TRDUSGS1410045.60 GoodUnspecifedNONE
5012009-11-19 11:04ESTYesTRD/AMWUSGS1030044.680.020.40FairClearNONE
5002009-07-16 08:29EDTYesTRD/JFWUSGS857044.200.020.40GoodClearNONE
4992009-05-13 14:10EDTYesTRD/GWPUSGS1060044.740.030.40GoodClearNONE
4982009-03-10 09:03EDTYesamw/gwpUSGS1600045.810.802.10FairClearNONE
4972008-11-19 10:57ESTYesJLZ/TRDUSGS1220045.140.000.50GoodClearNONE
4962008-09-09 11:23EDTYesTRDUSGS2070047.050.000.70GoodClearNONE
4952008-04-16 11:37EDTYesTRDUSGS3160049.200.000.70ExcellentClearNONE
4942008-01-10 12:37ESTYesTRDUSGS1210044.960.020.40GoodClearNONE
4932008-01-10 11:46ESTYesTRDUSGS1220044.900.030.40GoodClearNONE
4922007-08-20 17:00EDTYesTRDUSGS111041.520.050.30GoodClearNONE
4912007-08-20 16:35EDTYesTRDUSGS115041.55-0.030.30GoodClearNONE
4902007-08-20 16:15EDTYesTRDUSGS123041.61-0.040.30GoodClearNONE
4892007-08-20 15:45EDTYesTRDUSGS140041.73-0.150.40GoodClearNONE
4882007-05-07 10:27EDTYesAMW/GGGUSGS1370045.56 GoodClearNONE
4872007-01-18 13:49ESTYesTRDUSGS966044.430.000.40GoodClearNONE
4862007-01-18 12:36ESTYesTRDUSGS1030044.440.000.40GoodClearNONE
4852006-09-14 09:07EDTYesLYC/JLZUSGS216042.220.000.60GoodClearNONE
4842006-08-29 09:45EDTYesLYC/JLZUSGS370042.69 GoodClearNONE
4832006-08-29 08:45EDTYesLYC/JLZUSGS383042.67 GoodClearNONE
4822006-08-03 10:40EDTYesBLLUSGS545043.42 GoodClearNONE
4812006-08-03 08:22EDTYesBLLUSGS533043.34 GoodClearNONE
4802006-07-05 10:10EDTYesjlz/jfwUSGS1130044.95 GoodClearNONE
4792006-05-22 08:28EDTYesLYC/AMWUSGS4280051.28-0.040.50FairUnspecifedNONE
4782006-05-17 08:40EDTYesLYC/AMWUSGS6620055.17-0.110.50FairUnspecifedNONE
4772006-05-16 18:55EDTYesLYC/AMWUSGS8230056.75-0.040.50FairUnspecifedNONE
4762006-05-16 07:38EDTYesLYC/BOSUSGS8830057.84-0.060.50FairUnspecifedNONE
4752006-05-15 12:01EDTYesLYC/JLZUSGS9180058.610.070.50PoorUnspecifedNONE
4742006-01-11 11:30ESTYesjlz/lycUSGS978044.50-0.021.00GoodClearNONE
4732005-06-02 12:43EDTYesjlz/bosUSGS1650045.940.010.40GoodClearNONE
4722005-04-06 13:41EDTYestrd/jlzUSGS4310051.48 UnspecifiedUnspecifedNONE
4712005-01-13 12:23ESTYestrd/jlzUSGS857044.03 GoodClearNONE
4702004-11-04 09:25ESTYesbosUSGS314042.370.011.70GoodClearNONE
4692004-03-01 08:55ESTYesbosUSGS355042.540.001.60GoodIceShoreNONE
4682003-10-31 08:26ESTYesbosUSGS2960048.690.01 GoodUnspecifedNONE
4672003-06-10 08:51EDTYesbosUSGS988044.32-0.021.90ExcellentClearNONE
4662003-04-10 08:28EDTYesjfwUSGS1740045.960.021.00FairClearNONE
4652002-12-11 11:20ESTYesjfwUSGS351042.460.011.00GoodClearNONE
4642002-08-21 07:49EDTYesdmUSGS86641.07-0.011.70FairClearNONE
4632002-08-15 -- ----YesjfwUSGS124041.320.010.50Poor NONE
4622002-04-30 12:25EDTYesjfwUSGS919044.170.001.00ExcellentClearNONE
4612002-01-23 08:45ESTYesjfwUSGS163041.700.001.00GoodClearNONE
4602001-09-06 12:15EDTYesjfwUSGS81541.060.011.00GoodClearNONE
4592001-09-06 11:00EDTYesjfwUSGS80741.070.021.00GoodClearNONE
4582001-05-04 11:30EDTYesjfwUSGS1540045.540.071.00GoodClearNONE
4572000-11-28 10:30ESTYesjfwUSGS697043.510.071.50GoodClearNONE
4562000-08-01 09:00EDTYesjfwUSGS743043.640.051.00GoodClearNONE
4552000-05-11 12:15EDTYesjfwUSGS1320045.020.041.50GoodClearNONE
4542000-02-15 08:15ESTYesjfwUSGS549043.190.081.30ExcellentClearNONE
4531999-10-21 11:15EDTYesjsw/jfwUSGS542043.160.302.50GoodClearNONE
4521999-06-04 11:30EDTYesjfwUSGS246042.11-0.091.50GoodClearNONE
4511999-03-30 10:20ESTYesjfwUSGS2290046.950.072.00FairClearNONE
4501998-09-02 08:33EDTYesrgcUSGS150041.660.022.30GoodClearNONE
4491998-06-17 10:40EDTYesgcUSGS4700052.170.142.50GoodClearNONE
4481998-04-02 09:20ESTYesRGCUSGS3050049.100.113.10GoodClearNONE
4471998-01-05 09:04ESTYesrgcUSGS397042.670.012.00GoodClearNONE
4461997-10-09 09:19EDTYesgcUSGS165041.75-0.021.90GoodClearNONE
4451997-07-08 09:00EDTYesGCUSGS272042.220.091.80GoodClearNONE
4441997-05-27 08:50EDTYesGCUSGS993044.33-0.031.90GoodClearNONE
4431997-04-09 09:40EDTYesGCUSGS3020049.050.012.20GoodClearNONE
4421997-02-21 08:46ESTYesGCUSGS828043.940.061.90GoodClearNONE
4411996-12-20 09:15ESTYesGC /EHUSGS2900048.750.062.80GoodClearNONE
4401996-10-29 09:11ESTYesJZUSGS1970046.720.292.00GoodClearNONE
4391996-10-28 09:45ESTYesJZUSGS2050047.04-0.042.00GoodClearNONE
4381996-10-25 10:15EDTYesJZUSGS2860049.75-0.162.10FairClearNONE
4371996-10-24 09:45EDTYesJZUSGS3550050.91-0.062.30FairClearNONE
4361996-10-23 14:00EDTYesJZUSGS4320052.21-0.152.50FairUnspecifedNONE
4351996-10-23 09:10EDTYesJZUSGS4480052.53-0.343.00FairUnspecifedNONE
4341996-07-22 10:33EDTYesCRLUSGS1070044.520.021.60GoodClearNONE
4331996-04-18 -- ----YesPLP/RSSUSGS5070052.79-0.061.30GoodClearNONE
4321995-10-20 12:05EDTYesPLP/CRLUSGS272042.220.001.70GoodClearNONE
4311995-04-21 08:35EDTYesCRLUSGS553043.160.281.60GoodClearNONE
4301994-07-26 09:34EDTYesDMUSGS203041.91-0.071.50GoodClearNONE
4291994-05-04 10:43EDTYesDMUSGS1350045.190.011.80GoodClearNONE
4281993-08-10 08:58EDTYesDMUSGS152041.720.002.10GoodClearNONE
4271993-08-09 08:21EDTYesDMUSGS71041.160.082.10GoodClearNONE
4261993-08-02 07:58EDTYesDMUSGS278042.18-0.102.20GoodClearNONE
4251993-06-08 11:34EDTYesDMUSGS428042.720.241.80GoodClearNONE
4241993-03-31 10:20ESTYesZHSUSGS4390051.64-0.032.60GoodClearNONE
4231992-11-13 12:48ESTYesDMUSGS412042.730.562.20GoodClearNONE
4221992-08-14 09:23EDTYesD/BUSGS264042.180.123.90FairClearNONE
4211992-02-27 15:06ESTYesjlzUSGS782043.80-0.081.50GoodClearNONE
4201991-10-02 13:30EDTYesJLZ/MHUSGS817043.91-0.041.50GoodClearNONE
4191991-08-15 13:44EDTYesJLZUSGS157041.680.031.00GoodClearNONE
4181991-07-09 07:59EDTYesJLZUSGS162041.690.011.30GoodClearNONE
4171991-03-07 08:43ESTYesJLZUSGS2050047.07-0.012.00UnspecifiedClearNONE
4161991-01-03 11:43ESTYesSPCUSGS1290045.00-0.052.30FairClearNONE
4151990-06-27 17:40EDTYesSPCUSGS737043.720.042.50FairClearNONE
4141990-05-18 13:09EDTYesSPCUSGS2240047.310.183.50FairClearNONE
4131990-04-03 13:23EDTYesSPCUSGS1170044.920.033.30FairClearNONE
4121990-01-03 10:34ESTYesLOUSGS385042.72-0.072.90FairDebrisLightNONE
4111989-06-08 10:50EDTYesLOUSGS863044.200.063.00FairClearNONE
4101989-04-19 13:38EDTYesLOUSGS1810046.56-0.093.60GoodDebrisLightNONE
4091989-01-17 14:20ESTYesTCUSGS270042.270.011.10GoodClearNONE
4081988-12-15 13:50ESTYesLOUSGS378042.75-0.712.10Poor NONE
4071988-11-10 10:55ESTYesL/OUSGS927044.24-0.213.00Good NONE
4061988-10-18 11:25EDTYesL/OUSGS171041.94-0.282.50PoorClearNONE
4051988-03-30 09:25ESTYestjcUSGS2100046.920.231.40GoodClearNONE
4041987-08-21 12:09EDTYesTJCUSGS156041.700.021.20FairClearNONE
4031987-05-29 -- ----YesTJCUSGS458042.86-0.111.30FairClearNONE
4021987-04-07 -- ----YesWBH/ARCUSGS8400057.09-0.072.80GoodClearNONE
4011987-03-30 -- ----YesRSSUSGS2180047.130.011.50GoodClearNONE
4001987-02-23 -- ----YesRSSUSGS325042.450.001.30GoodClearNONE
3991986-08-22 -- ----YesRSSUSGS535043.12-0.061.30GoodClearNONE
3981986-07-03 -- ----YesRSSUSGS358042.62-0.021.30GoodClearNONE
3971986-03-04 -- ----YesRSS/TJCUSGS899044.19-0.071.00GoodClearNONE
3961985-10-08 -- ----YesRSSUSGS724043.720.001.30GoodClearNONE
3951985-05-10 -- ----YesRSSUSGS783043.92-0.011.30GoodClearNONE
3941985-01-03 -- ----YesRSSUSGS811043.870.011.20GoodClearNONE
3931984-11-27 -- ----YesRSSUSGS280042.29-0.051.40GoodClearNONE
3921984-10-01 -- ----YesRSSUSGS236042.050.051.30GoodClearNONE
2431960-04-07 12:00ESTYesJDLUSGS6540054.53-0.341.90GoodClearNONE
871938-09-24 13:00EDTYesAMMUSGS9100057.30-0.391.80UnspecifiedClearNONE
861938-09-23 13:00EDTYesWLIUSGS12200060.54-0.020.90UnspecifiedClearNONE