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Streamflow Measurements for the Nation

! Streamflow measurement pages will be decommissioned in early 2026. Please find the modernized pages in WDFN that suit you best. Learn more about our modernization plans and timeline and new pages.

USGS 01096548 STONY BROOK AT N CHELMSFORD, MA
Middlesex County, Massachusetts
Hydrologic Unit Code 01070006
Latitude  42°38'06.21", Longitude  71°22'46.33" NAD83
Gage datum 92 feet above NAVD88
Output formats
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Tab-separated data with 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 		 Channel
Number		 Channel
Name		 Meas.
type 		 Stream
flow
method 		 Velocity
method 		 Channel
flow
(ft3/s)		 Channel
width
(ft)		 Channel
area
(ft2)		 Channel
vel.
(ft/s)		 Channel
stability 		 Channel
material 		 Channel
evenness 		 Long.
vel.
desc. 		 Horz.
vel.
desc. 		 Vert.
vel.
desc. 		 Channel
loc.
code 		 Channel
loc.
dist.(ft)
442024-09-26 11:46:08EDTYesRJTUSGS2.08 Poor NONE1MainWADEQSCMMVADV2.0816.414.80.14FIRMBLDRUNEVSTDYUNEVUNKNATGA0.00
432024-08-29 11:59:01EDTYesSAUSGS7.71 Fair NONE1MainWADEQSCMMVADV7.7124.014.20.54FIRMCBLSUNEVSTDYUNSPSTNDUNSP
422024-07-22 12:30:15EDTYesZPR, SAUSGS5.95 Fair NONE1MainWADEQSCMMVADV5.9517.015.80.38UNSPUNSPUNSPUNSPUNSPUNSPUNSP
412024-06-11 10:05:35EDTYesZPR/SAUSGS33.6 Poor NONE1MainBRDSQADCPVADCP33.620.030.81.09UNSPUNSPUNSPUNSPUNSPUNSPUNSP
402024-05-16 10:39:28EDTYesJTHUSGS78.8 Fair NONE1Main ChannelBRDSQADCPVADCP78.822.043.71.80FIRMCBLSUNEVSTDYEVENUNKNATGA0.00
392024-04-03 10:32:47EDTYesJTHUSGS206 Fair NONE1Main ChannelBRDSQADCPVADCP20626.263.63.24FIRMBLDRUNEVSTDYEVENUNKNATGA0.00
382024-03-07 12:50:34ESTYesJTH/SAUSGS265 Poor NONE1Main ChannelBRDSQADCPVADCP26528.679.73.32FIRMCBLSUNEVSTDYEVENUNKNATGA0.00
372024-02-07 09:24:45ESTYesZPRUSGS139 Fair NONE1MainMBOTQADCPVADCP13922.761.42.26UNSPUNSPUNSPUNSPUNSPUNSPUNSP
362024-01-04 09:58:57ESTYesZPRUSGS149 Fair NONE1MainBRDSQADCPVADCP14923.762.22.40UNSPUNSPUNSPUNSPUNSPUNSPUNSP
352023-12-12 10:07:53ESTYesZPRUSGS175 Good NONE1MainBRDSQADCPVADCP17523.868.22.57UNSPUNSPUNSPUNSPUNSPUNSPUNSP
342023-11-08 11:08:35ESTYesZPRUSGS64.4 Poor NONE1MainMBOTQADCPVADCP64.419.968.90.94UNSPUNSPUNSPUNSPUNSPUNSPUNSP
332023-10-12 10:51:21EDTYesZPRUSGS78.6 Fair NONE1MainBRDSQADCPVADCP78.624.144.51.76UNSPUNSPUNSPUNSPUNSPUNSPUNSP
322023-08-10 11:35:22EDTYesrtbUSGS82.9 Poor NONE1main channelBRDSQADCPVADCP82.931.958.11.43FIRMBLDRUNEVPULSUNEVNSTDUNSP
312023-07-13 11:31EDTYesPSCUSGS108 0.50Fair NONE1MainWADEQSCMMVPAA10828.352.12.08FIRMCBLSUNEVSTDYUNEVUNKNUNSP
302023-06-13 11:28:57EDTYesPSCUSGS31.4 0.60Good NONE1mainWADEQSCMMVADV31.425.521.21.48FIRMGRVLUNEVSTDYUNEVUNKNUNSP
292023-05-08 10:54:30EDTYesPSC/EJHUSGS105 0.70Fair NONE1MainWADEQSCMMVPAA10527.150.42.09FIRMGRVLUNEVSTDYUNEVSTNDUNSP
282023-04-12 10:56:30EDTYesPSCUSGS73.4 0.50Fair NONE1mainWADEQSCMMVPAA73.426.036.02.04FIRMGRVLUNEVSTDYUNEVUNKNUNSP
272023-03-06 11:22:30ESTYesPSCUSGS101 0.50Fair NONE1mainWADEQSCMMVPAA10128.046.02.19FIRMCBLSUNEVSTDYUNSPUNKNDNST0.00
262023-02-02 11:51ESTYesPSCUSGS161 Fair NONE1mainWADEQSCMMVPAA16127.566.52.43FIRMGRVLUNEVSTDYUNEVSTNDUNSP
252023-01-04 11:45:30ESTYesPSCUSGS112 0.50Fair NONE1mainWADEQSCMMVPAA11227.052.52.14FIRMGRVLUNEVSTDYUNEVUNKNUNSP
242022-12-06 12:39:20ESTYesJERUSGS32.1 Fair NONE1MainWADEQSCMMVADV32.127.025.51.26FIRMBLDRUNEVSTDYEVENUNKNUNSP
232022-11-03 11:32:11EDTYesPSCUSGS45.9 Fair NONE1mainWADEQSCMMVADV45.927.532.71.40FIRMCBLSUNEVSTDYUNSPUNKNUNSP
222022-10-06 11:19:28EDTYesJER/PSCUSGS3.39 Fair NONE1MainWADEQSCMMVADV3.3923.518.70.18FIRMBLDRUNEVSTDYEVENUNKNUNSP
212022-09-07 14:02:42EDTYesJERUSGS4.90 Fair NONE1MainWADEQSCMMVADV4.9015.511.70.42FIRMBLDRUNEVSTDYEVENUNKNUNSP
202022-08-03 11:55:28EDTYesPSCUSGS0.97 Poor NONE1MainWADEQSCMMVADV0.9723.59.050.11FIRMCBLSUNEVSTDYUNEVUNKNUNSP
192022-07-14 09:49:39EDTYesJMT/JERUSGS3.84 Fair NONE1MainWADEQSCMMVADV3.8421.59.230.42SOFTGRVLEVENSTDYEVENUNKNUNSP
182022-07-14 09:41:19EDTYesJMT/JERUSGS3.85 Fair NONE1MainWADEQSCMMVADV3.8522.09.510.40SOFTGRVLEVENSTDYEVENUNKNUNSP
172022-06-15 09:11:51EDTYesPSCUSGS28.5 Good NONE1MainWADEQSCMMVADV28.524.519.31.48FIRMCBLSUNEVSTDYUNEVUNKNUNSP
162022-05-05 12:53:07EDTYesJMTusgs74.3 Fair NONE1Main ChannelWADEQSCMMVADV74.323.040.31.84FIRMCBLSEVENSTDYEVENUNKNUNSP
152022-04-04 11:43:33EDTYesKAFUSGS95.2 Good NONE1MainWADEQSCMMVADV95.226.043.62.18FIRMCBLSUNEVSTDYEVENNSTDUPST50.00
142022-03-09 11:47:01ESTYesPSCUSGS138 Fair NONE1MainWADEQSCMMVADV13827.055.62.49FIRMBLDRUNEVSTDYUNEVUNKNATGA0.00
132022-02-09 12:02:54ESTYesKKC/JTHUSGS145 0.40Poor NONE1Main ChannelBRDSQADCPVADCP14532.770.22.07FIRMBLDRUNEVSTDYUNEVNSTDATGA0.00
122022-01-26 11:33:30ESTYesJDLUSGS68.5 Good NONE1MainWADEQSCMMVADV68.525.032.22.12FIRMGRVLEVENSTDYEVENSTNDATGA0.00
112021-12-09 12:59:58ESTYesrtbUSGS53.4 Fair NONE1Main channelWADEQSCMMVADV53.422.528.01.91FIRMBLDRUNEVUNSPUNEVUNSPUNSP
102021-11-10 12:20:42ESTYesMCUUSGS65.0 Fair NONE1MainWADEQSCMMVADV65.023.047.01.38FIRMCBLSEVENPULSEVENNSTDUNSP
92021-10-12 11:54:19EDTYesMCUUSGS74.7 Fair NONE1MainWADEQSCMMVADV74.723.837.61.99FIRMBLDREVENSTDYEVENUNKNUNSP
82021-09-09 11:37:06EDTYesMCUUSGS93.6 Good NONE1MainWADEQSCMMVADV93.627.546.82.00FIRMBLDREVENSTDYUNSPNSTDUNSP
072021-08-05 10:22:30EDTYescpyUSGS52.0 0.50Good NONE1Main ChannelWADEQSCMMVADV52.024.728.91.80SOFTCBLSUNEVSTDYUNEVUNKNATGA0.00
62021-07-07 11:27:47EDTYesMCUUSGS81.3 Fair NONE1Stony BrookWADEQSCMMVADV81.326.540.62.00FIRMBLDREVENSTDYUNEVNSTDUNSP
52021-06-01 12:17EDTYesMCUUSGS112 Good NONE101096548WADEQSCMMVADV11226.350.12.24FIRMBLDREVENSTDYUNSPNSTDUNSP
32021-06-01 11:59:30EDTYescpyUSGS110 1.00Fair NONE1Main channelWADEQSCMMVADV11026.448.42.27SOFTBLDRUNEVSTDYUNEVUNKNUNSP
42021-05-11 14:19:52EDTYesMCUUSGS148 Fair NONE101096548WADEQSCMMVADV14827.060.02.46FIRMBLDREVENSTDYEVENNSTDUNSP
12021-04-07 10:06:30EDTYesCNCBUSGS44.1 Good NONE101096548 Qm measurementWADEQSCMMVADV44.127.028.21.57FIRMCBLSUNEVSTDYUNEVNSTDUNSP