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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 400118105134600 BOULDER CREEK AT COTTONWOOD GROVE NR BOULDER CO.
Boulder County, Colorado
Hydrologic Unit Code 10190005
Latitude  40°01'18", Longitude 105°13'46" NAD27
Gage datum 5,210 feet above NGVD29
Output formats
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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)
231991-11-25 13:15MSTYesRAKUSGS2.501.610.000.50FairClearNONE1Imported Channel 1WADEunspeunkno2.5011.53.790.66UNSPUNSPUNSPunknUNSPUNSPUNSP
221991-09-12 11:35MDTYesRAKUSGS18.11.930.000.40GoodClearNONE1Imported Channel 1WADEunspeunkno18.134.019.80.91UNSPUNSPUNSPunknUNSPUNSPUNSP
211991-07-11 10:30MDTYesRAKUSGS85.72.49-0.010.50FairClearNONE1Imported Channel 1WADEunspeunkno85.736.041.42.07UNSPUNSPUNSPunknUNSPUNSPUNSP
201991-06-18 09:15MDTYesRAKUSGS3243.54-0.010.80GoodClearNONE1Imported Channel 1WADEunspeunkno32446.575.44.29UNSPUNSPUNSPunknUNSPUNSPUNSP
191991-06-05 10:05MDTYesRAKUSGS1452.860.000.50GoodClearNONE1Imported Channel 1WADEunspeunkno14528.534.54.20UNSPUNSPUNSPunknUNSPUNSPUNSP
181991-05-10 10:25MDTYesRAKUSGS28.52.270.000.40FairClearNONE1Imported Channel 1WADEunspeunkno28.514.611.82.42UNSPUNSPUNSPunknUNSPUNSPUNSP
171991-04-04 11:10MSTYesGBOUSGS2.311.81-0.010.50FairDebrisLightNONE1Imported Channel 1WADEunspeunkno2.317.503.740.62UNSPUNSPUNSPunknUNSPUNSPUNSP
161991-03-15 12:20MSTYesRAKUSGS2.001.800.010.30GoodClearNONE1Imported Channel 1WADEunspeunkno2.007.903.310.60UNSPUNSPUNSPunknUNSPUNSPUNSP
151991-02-08 10:08MSTYesRAKUSGS4.881.90-0.020.50FairClearNONE1Imported Channel 1WADEunspeunkno4.887.403.861.26UNSPUNSPUNSPunknUNSPUNSPUNSP
141990-12-11 10:10MSTYesRAKUSGS2.351.750.000.30FairClearNONE1Imported Channel 1WADEunspeunkno2.3510.56.670.35UNSPUNSPUNSPunknUNSPUNSPUNSP
131990-11-01 10:30MSTYesRAK/RAHUSGS13.12.050.000.50FairClearNONE1Imported Channel 1WADEunspeunkno13.114.810.61.24UNSPUNSPUNSPunknUNSPUNSPUNSP
121990-09-17 11:50MDTYesRAK/GMCUSGS20.92.180.010.50FairClearNONE1Imported Channel 1WADEunspeunkno20.919.713.21.58UNSPUNSPUNSPunknUNSPUNSPUNSP
111990-07-23 10:20MDTYesRAK/GMCUSGS58.32.56-0.010.50FairClearNONE1Imported Channel 1WADEunspeunkno58.321.522.02.65UNSPUNSPUNSPunknUNSPUNSPUNSP
101990-07-16 11:30MDTYesRAKUSGS45.02.470.000.50FairClearNONE1Imported Channel 1WADEunspeunkno45.021.019.22.34UNSPUNSPUNSPunknUNSPUNSPUNSP
91990-06-26 10:05MDTYesRSW/RAKUSGS2103.35-0.020.80FairClearNONE1Imported Channel 1WADEunspeunkno21041.049.84.22UNSPUNSPUNSPunknUNSPUNSPUNSP
81990-06-18 10:20MDTYesRSW/RAKUSGS2153.41-0.020.70FairClearNONE1Imported Channel 1WADEunspeunkno21542.051.64.17UNSPUNSPUNSPunknUNSPUNSPUNSP
71990-03-20 09:45MSTYesRSW/GMCUSGS1.641.730.000.30UnspecifiedClearNONE1Imported Channel 1WADEunspeunkno1.6410.02.690.61UNSPUNSPUNSPunknUNSPUNSPUNSP
61990-01-18 10:00MSTYesRSW/GMCUSGS7.491.960.000.50UnspecifiedClearNONE1Imported Channel 1WADEunspeunkno7.4910.04.711.59UNSPUNSPUNSPunknUNSPUNSPUNSP
2111990-01-10 10:10MSTYesBWUSGS9.681.99 Unspecified NONE1Imported Channel 1WADEunspeunkno9.68 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
2101989-12-12 13:20MSTYesBWUSGS8.181.80 Unspecified NONE1Imported Channel 1WADEunspeunkno8.18 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
2091989-11-30 16:03MSTYesLMUSGS6.811.74 Unspecified NONE1Imported Channel 1WADEunspeunkno6.81 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
51989-11-21 12:30MSTYesGMCUSGS11.01.800.001.00UnspecifiedClearNONE1Imported Channel 1WADEunspeunkno11.025.411.70.94UNSPUNSPUNSPunknUNSPUNSPUNSP
2081989-11-16 12:08MSTYesLMUSGS3.981.64 Unspecified NONE1Imported Channel 1WADEunspeunkno3.98 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
2071989-11-09 17:03MSTYesLMUSGS4.911.65 Unspecified NONE1Imported Channel 1UNSPother 4.91 UNSPUNSPUNSPunknUNSPUNSPUNSP
2061989-11-02 13:47MSTYesLMUSGS8.101.76 Unspecified NONE1Imported Channel 1UNSPother 8.10 UNSPUNSPUNSPunknUNSPUNSPUNSP
2051989-10-26 15:50MDTYesLMUSGS4.071.65 Unspecified NONE1Imported Channel 1WADEunspeunkno4.07 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
41989-10-19 09:50MDTYesRSW/GMCUSGS10.81.83-0.010.70UnspecifiedClearNONE1Imported Channel 1WADEunspeunkno10.820.08.991.20UNSPUNSPUNSPunknUNSPUNSPUNSP
2041989-10-12 09:25MDTYesLMUSGS3.041.60 Unspecified NONE1Imported Channel 1UNSPother 3.04 UNSPUNSPUNSPunknUNSPUNSPUNSP
2031989-10-05 13:55MDTYesLMUSGS4.071.64 Unspecified NONE1Imported Channel 1UNSPother 4.07 UNSPUNSPUNSPunknUNSPUNSPUNSP
31989-09-29 09:50MDTYesRSW/GMCUSGS2.321.57-0.010.40UnspecifiedClearNONE1Imported Channel 1WADEunspeunkno2.3214.53.950.59UNSPUNSPUNSPunknUNSPUNSPUNSP
2021989-09-21 15:00MDTYesLMUSGS5.241.65 UnspecifiedClearNONE1Imported Channel 1UNSPother 5.24 UNSPUNSPUNSPunknUNSPUNSPUNSP
21989-09-21 10:00MDTYesRSW/GMCUSGS5.201.70-0.010.70UnspecifiedClearNONE1Imported Channel 1WADEunspeunkno5.2019.05.560.94UNSPUNSPUNSPunknUNSPUNSPUNSP
2011989-09-14 15:00MDTYesLMUSGS17.21.86 Unspecified NONE1Imported Channel 1WADEunspeunkno17.2 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
11989-08-29 13:35MDTYesGMCUSGS11.01.790.000.50UnspecifiedClearNONE1Imported Channel 1WADEunspeunkno11.021.012.70.86UNSPUNSPUNSPunknUNSPUNSPUNSP