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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 01643580 MONOCACY RIVER NEAR DICKERSON, MD
Frederick County, Maryland
Hydrologic Unit Code 02070009
Latitude  39°15'48.23", Longitude  77°26'08.67" NAD83
Drainage area 961  square miles
Gage datum 198.05 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 		 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)
0322025-11-14 09:46:51ESTYesRLTUSGS1971.12 FairClearNONE1032WADEQSCMMVADV1971723880.51FIRMBLDREVENSTDYEVENUNSPATGA0.00
0312025-08-26 11:08:35EDTYesCDWUSGS1841.33 FairDebrisModerateNONE1031BRDSQADCPVADCP1841874040.45FIRMBLDREVENSTDYEVENUNSPDNST40.00
0302025-07-31 15:13:18EDTYesLJ/CJ/RTUSGS2931.540.000.33FairClearNONE1MainBRDSQADCPVADCP2932084760.62FIRMCBLSUNEVSTDYUNEVUNKNDNST50.00
0292025-07-01 11:10:25EDTYesCDWUSGS6912.19 GoodClearNONE1029BRDSQADCPVADCP6912025941.16FIRMBLDRUNEVSTDYEVENUNSPATGA0.00
0282025-05-06 11:14:54EDTYesCDWUSGS22804.09 FairDebrisModerateNONE1028BRDSQADCPVADCP228021710302.22FIRMBLDREVENSTDYEVENUNSPDNST50.00
0272025-04-16 12:25:21EDTYesCDWUSGS6552.17 FairDebrisLightNONE1027BRDSQADCPVADCP6552055911.11FIRMBLDREVENSTDYEVENUNSPATGA0.00
0262025-02-04 09:39:45ESTYesCDWUSGS5181.95 FairDebrisLightNONE1026BRDSQADCPVADCP5182025440.95FIRMBLDRUNEVSTDYEVENUNSPDNST60.00
252024-11-23 09:00:19ESTYesCDJUSGS3471.580.021.50FairDebrisModerateNONE1MainWADEQSCMMVADV3471754690.74FIRMSANDEVENPULSEVENUNSPATGA0.00
242024-09-14 08:50:44EDTYesCDJUSGS1831.210.001.20FairClearNONE1MainWADEQSCMMVADV1831764020.46FIRMCBLSEVENSTDYEVENUNSPATGA0.00
0232024-07-08 09:46:51EDTYesLEK2/CDJUSGS2271.220.011.73GoodClearNONE1MainWADEQSCMMVADV2271824090.56FIRMGRVLEVENSTDYEVENUNSPATGA0.00
0222024-05-22 10:44:07EDTYesCDWUSGS7472.30 GoodClearNONE1022BRDSQADCPVADCP7472046221.20FIRMBLDREVENSTDYEVENUNSPDNST60.00
0212024-04-09 11:30:54EDTYesCDWUSGS20103.79 GoodDebrisModerateNONE1021BRDSQADCPVADCP20102089392.14FIRMBLDREVENSTDYEVENUNSPDNST80.00
0202024-04-04 10:30:10EDTYesCDWUSGS1800015.32 FairDebrisModerateNONE1020BRDSQADCPVADCP1800034937504.80FIRMBLDRUNEVPULSEVENUNSPDNST80.00
0192024-04-03 12:36:07EDTYesCDWUSGS1410012.34 PoorDebrisModerateNONE1019BRDSQADCPVADCP1410022426305.36FIRMBLDREVENPULSEVENUNSPDNST80.00
0182024-02-14 11:02:35ESTYesCDWUSGS59407.10 0.25FairDebrisModerateNONE1018BRDSQADCPVADCP594022517003.48FIRMBLDREVENPULSEVENUNSPDNST60.00
0172024-02-05 11:13:05ESTYesCDWUSGS10202.75 FairClearNONE1017BRDSQADCPVADCP10201976931.48FIRMCBLSEVENSTDYEVENUNSPDNST60.00
0162024-01-11 11:12:33ESTYesCDWUSGS58609.17 FairDebrisModerateNONE1016BRDSQADCPVADCP586023421602.71FIRMBLDREVENSTDYEVENUNSPDNST60.00
0152024-01-10 13:13:16ESTYesLK2/LJJ/CDWUSGS1820013.82 PoorDebrisModerateNONE1015BRDSQADCPVADCP1820034737204.88FIRMBLDRUNEVSTDYEVENUNSPDNST60.00
0142023-12-19 13:50:23ESTYesCDWUSGS38005.490.090.30FairDebrisModerateNONE1014BRDSQADCPVADCP380021712802.97FIRMBLDREVENSTDYEVENUNSPDNST60.00
0132023-12-12 12:50:52ESTYesCDWUSGS21403.950.000.22GoodClearNONE1013BRDSQADCPVADCP21402159782.18FIRMBLDREVENSTDYEVENUNSPDNST60.00
0122023-11-22 15:00:15ESTYesljjUSGS12402.980.050.30FairClearNONE1012BRDSQADCPVADCP12401997341.69FIRMCBLSUNEVSTDYUNEVUNKNDNST50.00
0112023-10-05 11:54:30EDTYesCDWUSGS1300.890.000.65FairClearNONE1011WADEQSCMMVADV1302063380.39FIRMBLDREVENSTDYEVENUNSPDNST50.00
0102023-09-06 15:59:30EDTYesLEKUSGS80.40.640.000.58FairDebrisLightNONE1010WADEQSCMMVADV80.41741710.47FIRMCBLSEVENSTDYEVENUNSPUPST20.00
0092023-08-02 12:04:28EDTYesCDWUSGS1300.930.000.23PoorDebrisModerateNONE1009BRDSQADCPVADCP1301903380.39FIRMBLDRUNEVSTDYEVENUNSPDNST60.00
0082023-07-13 11:26:38EDTYesCDWUSGS1611.050.000.45PoorClearNONE1008BRDSQADCPVADCP1611933600.45FIRMBLDRUNEVSTDYEVENUNSPDNST60.00
71979-09-27 -- ----YesJJMUSGS12204.15 Unspecified NONE1Imported Channel 1BOATunspeunkno1220222 UNSPUNSPUNSPunknUNSPUNSPUNSP
61977-09-14 -- ----YesJLFUSGS1022.59 Unspecified NONE1Imported Channel 1WADEunspeunkno1021302260.45UNSPUNSPUNSPunknUNSPUNSPUNSP
51977-07-13 -- ----YesJJMUSGS2403.02 Unspecified NONE1Imported Channel 1WADEunspeunkno2401572490.96UNSPUNSPUNSPunknUNSPUNSPUNSP
41976-08-30 -- ----YesJJMUSGS2363.03 Unspecified NONE1Imported Channel 1WADEunspeunkno2361703620.65UNSPUNSPUNSPunknUNSPUNSPUNSP
31975-06-06 -- ----YesJJMUSGS80609.75 Unspecified NONE1Imported Channel 1CRANunspeunkno806037519704.09UNSPUNSPUNSPunknUNSPUNSPUNSP
21975-05-29 -- ----YesDFGUSGS8564.19 Unspecified NONE1Imported Channel 1BOATunspeunkno8562257841.09UNSPUNSPUNSPunknUNSPUNSPUNSP
11974-10-02 -- ----YesBMHUSGS2223.02 Unspecified NONE1Imported Channel 1WADEunspeunkno2221573260.68UNSPUNSPUNSPunknUNSPUNSPUNSP