Warning: Javascript must be enabled to use all the features on this page!


Page Loading - Please Wait...

Click to hideNews Bulletins

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 15087585 TWELVEMILE C NR PETERSBURG AK
Petersburg Borough, Alaska
Hydrologic Unit Code 19010210
Latitude  56°58'07", Longitude 133°04'05" NAD83
Drainage area 9.6  square miles
Output formats
HTML table with channel data
HTML table without channel data
Tab-separated data with channel data
Tab-separated data without channel data
Graph of data
Reselect output format
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)
362025-07-31 16:19AKDTYesRJB, ENCUSGS20.522.530.001.13PoorVegetationLightNONE1MMT 36WADEQSCMMVPAA20.561.042.60.48FIRMGRVLEVENSTDYEVENUNKNUPST30.00
352025-01-23 10:21AKSTYesJCT/ECUSGS34.722.750.010.50FairDebrisLightNONE1MainWADEQSCMMVPAA34.760.050.30.69FIRMGRVLEVENSTDYEVENSTNDUPST50.00
342025-01-23 09:15:30AKSTYesJCT/ECUSGS35.122.760.011.00FairDebrisLightNONE1MainWADEQSCMMVPAA35.152.043.10.81FIRMGRVLEVENSTDYEVENSTNDDNST50.00
332024-11-14 08:32AKSTYesJCT/CMJUSGS22.122.510.010.75FairDebrisLightNONE1MainWADEQSCMMVPAA22.158.036.50.60FIRMCBLSEVENSTDYEVENSTNDUPST50.00
322024-08-14 14:31AKDTYesJCT, MHHusgs10.622.310.000.53PoorClearNONE1Twelvemile Creek Routine LocationWADEQSCMMVPAA10.656.530.30.35FIRMSANDEVENSTDYEVENUNKNUPST30.00
312024-06-25 13:57AKDTYesMHH, CMJusgs40.022.790.010.37FairClearNONE1Normal LocationWADEQSCMMVPAA40.057.054.10.74FIRMGRVLEVENSTDYEVENUNKNUPST25.00
302024-06-25 13:31AKDTYesMHH, CMJusgs41.522.800.010.67FairClearNONE1Normal LocationWADEQSCMMVPAA41.557.054.60.76FIRMGRVLEVENSTDYEVENUNKNUPST20.00
292024-05-14 14:43:30AKDTYesMHH, JCTusgs15823.760.010.75FairClearNONE1MainWADEQSCMMVPAA15860.01131.40FIRMGRVLEVENSTDYEVENUNFMUPST80.00
282024-03-21 14:36AKDTNo
272024-01-03 08:58AKSTYesMHH, JCTusgs39.822.760.010.50FairClearNONE1Routine MainWADEQSCMMVPAA39.853.538.11.04SOFTGRVLEVENSTDYEVENUNKNUPST50.00
262023-11-06 13:21AKSTYesMHHusgs13923.540.180.50PoorClearNONE1Above GageWADEQSCMMVPAA13955.078.51.77FIRMGRVLEVENSTDYEVENUNKNUPST50.00
252023-09-06 12:02AKDTYesMHHusgs16.622.440.000.47PoorClearNONE1At GageWADEQSCMMVPAA16.660.434.30.48SOFTSANDEVENSTDYEVENUNKNATGA0.00
242023-07-12 09:47AKDTNo
232023-05-31 10:45AKDTNo
222023-01-10 11:26AKSTYesMHH, JLPusgs32.123.040.020.63PoorIceAnchorNONE1Gage ReachWADEQSCMMVPAA32.159.071.30.45SOFTSANDEVENSTDYEVENUNKNUPST20.00
212022-10-17 15:28:30AKDTYesMHH/PENusgs38424.860.421.50PoorClearNONE1MMT 21WADEQSCMMVPAA38458.01792.15FIRMSANDEVENUNSPUNEVSTNDUPST5.00
202022-08-22 14:20:30AKDTYesCMJ MHH PENusgs24.022.620.001.25Fair NONE120WADEQSCMMVPAA24.061.541.20.58SOFTsiltEVENSTDYEVENSTNDUPST60.00
192022-06-29 09:52:30AKDTYesPENUSGS10223.44-0.010.75Poor NONE112 Mile Solo Aquacalc mmt 19WADEQSCMMVPAA10268.090.51.13FIRMGRVLEVENSTDYEVENSTNDDNST1400.00
182022-06-08 08:15AKDTYesCMJ JMGusgs10523.420.000.50Fair NONE118WADEQSCMMVPAA10562.095.91.10SOFTGRVLEVENSTDYEVENSTNDATGA0.00
172022-03-03 11:40AKSTYesCMJ, JMGusgs25.822.650.000.75FairClearNONE117WADEQSCMMVPAA25.858.049.80.52SOFTGRVLUNEVSTDYEVENUNFMUPST20.00
162021-10-15 14:58:30AKDTYesCMJ, PENUSGS77.623.080.020.75Good NONE1Oct 15 Aquacalc Measurement 16WADEQSCMMVPAA77.648.048.61.59FIRMGRVLEVENSTDYEVENUNFMDNST20.00
152021-09-15 11:17AKDTYesJLP, PENUSGS56.022.910.000.67Good NONE112 Mile CreekWADEQSCMMVPAA56.059.068.90.81FIRMGRVLUNEVPULSEVENSTNDDNST75.00
142021-05-27 12:37AKDTYesrhh/jmgUSGS44.322.760.000.50GoodClearNONE112 mileWADEQSCMMVPAA44.356.058.80.75FIRMGRVLEVENSTDYEVENSTNDUPST50.00
132021-05-19 12:26AKDTYesrhh/jmgUSGS46.622.770.000.50FairClearNONE112 mileWADEQSCMMVPAA46.648.036.11.29FIRMGRVLEVENSTDYEVENSTNDDNST50.00
122021-04-29 17:26:30AKDTYesrhh/jmgUSGS67.723.02 FairClearNONE112 Mile Cr. nr. PetersburgWADEQSCMMVPAA67.755.051.81.31SOFTGRVLEVENSTDYEVENSTNDUPST80.00
111982-10-14 19:37AKDTYesswannerUSGS60.26.92 Unknown NONE1MainunknQSCMMunkno60.257.035.61.69unknunknunknunknunknUNKNunkn
101981-12-06 17:47AKSTYesswanner, imbUSGS71.07.10 Unknown NONE1MainunknQSCMMunkno71.057.554.41.30unknunknunknunknunknUNKNunkn
91980-10-21 19:09:30AKDTYesswannerUSGS60.16.86 Unknown NONE1MainunknQSCMMunkno60.158.044.31.36unknunknunknunknunknUNKNunkn
81979-09-17 21:22AKDTYesswanner, schUSGS1067.24 Unknown NONE1MainunknQSCMMunkno10656.568.21.55unknunknunknunknunknUNKNunkn
71978-11-04 19:32AKSTYesswanner, graUSGS70.06.94 Unknown NONE1MainunknQSCMMunkno70.056.041.61.68unknunknunknunknunknUNKNunkn
61977-10-06 21:24:30AKDTYesswanner, kisUSGS15.46.42 Unknown NONE1MainunknQSCMMunkno15.458.035.40.44unknunknunknunknunknUNKNunkn
51975-10-21 20:14:30AKDTYesswanner, thoUSGS67.36.91 Unknown NONE1MainunknQSCMMunkno67.357.052.61.28unknunknunknunknunknUNKNunkn
41975-06-22 21:59:30AKDTYesthomas kuhuUSGS57.77.11 Unknown NONE1MainunknQSCMMunkno57.759.651.51.11unknunknunknunknunknUNKNunkn
31974-04-12 22:17AKDTYeslovelace, mcUSGS59.17.29 Unknown NONE1MainunknQSCMMunkno59.160.067.30.88unknunknunknunknunknUNKNunkn
21972-11-09 18:22AKSTYeswiggins, kleUSGS2327.90 Unknown NONE1MainunknQSCMMunkno23259.01092.13unknunknunknunknunknUNKNunkn
11972-06-18 18:32AKDTYeslumanUSGS60.6 Unknown NONE1MainunknQSCMMunkno60.653.536.01.68unknunknunknunknunknUNKNunkn