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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 15272400 TWENTYMILE R NR PORTAGE AK
Anchorage Municipality, Alaska
Hydrologic Unit Code 19020302
Latitude  60°50'47", Longitude 148°59'09" NAD27
Drainage area 167  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
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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)
382012-08-23 13:52AKDTYesPVS/JSCUSGS376015.381.362.10PoorUnspecifedNONE1Imported Channel 1MBOTQADCPVADCP376046025401.47SOFTsiltEVENunknEVENUNSPUPST100.00
372011-09-08 12:16AKDTYesPVS/JSCUSGS1380013.550.000.30FairClearNONE1Imported Channel 1MBOTQADCPVADCP1380045130204.58SOFTsiltUNEVunknEVENUNSPUPST100.00
362011-07-14 10:33AKDTYesPVS/JSCUSGS506012.750.800.10PoorUnspecifedNONE1Imported Channel 1MBOTQADCPVADCP506045621602.34SOFTsiltUNEVunknEVENUNSPUPST300.00
352009-07-22 15:44:30AKDTYesjrm/pvsUSGS1480013.70 0.10PoorClearNONE1Imported Channel 1MBOTQADCPVADCP1480045426305.62SOFTsiltUNEVunknEVENUNSPUPST300.00
342009-07-21 12:53AKDTYesjrm/pvsUSGS858012.550.010.40PoorClearNONE1Imported Channel 1MBOTQADCPVADCP858039220504.22SOFTsiltUNEVunknEVENUNSPUPST300.00
332009-07-21 09:20AKDTYesjrm/pvsUSGS1240014.620.840.30FairUnspecifedNONE1Imported Channel 1MBOTQADCPVADCP1240046434303.64SOFTsiltUNEVunknEVENUNSPUPST300.00
322009-07-20 12:52AKDTYesjrm/pvsUSGS657011.86 0.30FairClearNONE1Imported Channel 1MBOTQADCPVADCP657039117303.80SOFTsiltUNEVunknEVENUNSPUPST300.00
311990-10-01 -- ----YesSHJ/ELKUSGS13808.98-0.110.70Fair NONE1Imported Channel 1CRANunspeunkno138038510501.31UNSPUNSPUNSPunknUNSPUNSPUNSP
301990-08-14 -- ----YesRMN/SHJUSGS491010.54-0.031.00Fair NONE1Imported Channel 1CRANunspeunkno491049017902.74UNSPUNSPUNSPunknUNSPUNSPUNSP
291990-07-17 -- ----YesLSL/JAMUSGS318010.18-0.011.00Unspecified NONE1Imported Channel 1BRUSunspeunkno318042816601.92UNSPUNSPUNSPunknUNSPUNSPUNSP
281990-06-21 -- ----YesSHJ/LUKUSGS395010.250.000.70Fair NONE1Imported Channel 1CRANunspeunkno395049220301.95UNSPUNSPUNSPunknUNSPUNSPUNSP
271990-05-22 -- ----YesJMD/SHJUSGS18809.89-0.031.00Poor NONE1Imported Channel 1CRANunspeunkno188048715701.20UNSPUNSPUNSPunknUNSPUNSPUNSP
261990-04-12 -- ----YesRMN/MRCUSGS11909.91-3.801.10Poor NONE1Imported Channel 1CRANunspeunkno11903209101.31UNSPUNSPUNSPunknUNSPUNSPUNSP
251989-10-14 -- ----YesRMN/SHJUSGS8648.88-0.071.00Fair NONE1Imported Channel 1CRANunspeunkno86439811800.73UNSPUNSPUNSPunknUNSPUNSPUNSP
241989-10-07 -- ----YesSHJUSGS676010.950.000.40Fair NONE1Imported Channel 1CRANunspeunkno676049121203.19UNSPUNSPUNSPunknUNSPUNSPUNSP
231989-08-27 -- ----YesSHJ/JMDUSGS1880013.200.000.70Good NONE1Imported Channel 1CRANunspeunkno1880049832505.78UNSPUNSPUNSPunknUNSPUNSPUNSP
221989-08-08 -- ----YesRMN/RLRUSGS368010.280.001.00Good NONE1Imported Channel 1BOATunspeunkno368048514102.65UNSPUNSPUNSPunknUNSPUNSPUNSP
211989-07-13 -- ----YesSHJUSGS447010.620.221.10Fair NONE1Imported Channel 1CRANunspeunkno447045715802.83UNSPUNSPUNSPunknUNSPUNSPUNSP
201989-05-17 -- ----YesSHJ/MATUSGS142010.780.221.10Fair NONE1Imported Channel 1UNSPother 1420 UNSPUNSPUNSPunknUNSPUNSPUNSP
181964-05-14 09:00AKSTYesLRB/ACMUSGS17500 -1.500.50Unspecified NONE1Imported Channel 1CRANunspeunkno17500 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
171964-05-14 06:45AKSTYesLRB/ACMUSGS19800 3.300.80Unspecified NONE1Imported Channel 1CRANunspeunkno19800 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
161964-05-13 21:00AKSTYesLRB/ACMUSGS9840 -1.100.80Unspecified NONE1Imported Channel 1CRANunspeunkno9840 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
151964-05-13 19:30AKSTYesLRB/ACMUSGS13600 2.801.30Unspecified NONE1Imported Channel 1CRANunspeunkno13600 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
141964-05-12 20:26AKSTYesLRB/ACMUSGS11500 Unspecified NONE1Imported Channel 1CRANunspeunkno11500 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
131964-05-12 18:45AKSTYesLRB/ACMUSGS18100 2.301.00Fair NONE1Imported Channel 1CRANunspeunkno18100 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
121964-05-12 07:45AKSTYesLRB/ACMUSGS18000 -2.400.80Unspecified NONE1Imported Channel 1CRANunspeunkno18000 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
111964-05-12 06:05AKSTYesLRB/ACMUSGS28800 0.600.50Unspecified NONE1Imported Channel 1CRANunspeunkno28800 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
101964-05-12 05:30AKSTYesLRB/ACMUSGS25700 2.000.50Unspecified NONE1Imported Channel 1CRANunspeunkno25700 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
91964-05-11 19:30AKSTYesLRB/ACMUSGS10500 -1.200.50Unspecified NONE1Imported Channel 1CRANunspeunkno10500 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
81964-05-11 18:00AKSTYesLRB/ACMUSGS17000 1.001.50Unspecified NONE1Imported Channel 1CRANunspeunkno17000 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
71964-05-11 07:00AKSTYesLRB/ACMUSGS14500 -1.500.50Unspecified NONE1Imported Channel 1CRANunspeunkno14500490 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
61964-05-11 05:45AKSTYesLRB/ACMUSGS17400 0.100.50Unspecified NONE1Imported Channel 1CRANunspeunkno17400 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
51964-05-11 05:05AKSTYesLRB/ACMUSGS22000 1.600.80Unspecified NONE1Imported Channel 1CRANunspeunkno22000454 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
41964-05-10 18:50AKSTYesLRB/ACMUSGS7190 -0.701.30Unspecified NONE1Imported Channel 1CRANunspeunkno7190 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
31964-05-10 17:00AKSTYesLRB/ACMUSGS8070 2.800.80Unspecified NONE1Imported Channel 1CRANunspeunkno8070490 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
21964-05-10 06:05AKSTYesLRB/ACMUSGS7900 -0.900.50Poor NONE1Imported Channel 1CRANunspeunkno7900490 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
11964-05-10 04:45AKSTYesLRB/ACMUSGS7130 0.501.30Poor NONE1Imported Channel 1CRANunspeunkno7130490 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP