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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 15300700 ALAGNAK R BL NONVIANUK R NR IGIUGIG AK
Lake And Peninsula Borough, Alaska
Hydrologic Unit Code 19030206
Latitude  59°01'16", Longitude 155°50'51" NAD27
Drainage area 922  square miles
Gage datum 460 feet above NGVD29
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
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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)
122001-06-06 11:44AKDTYesJHCUSGS4420 UnspecifiedClearNONE1Imported Channel 1BOATunspeunkno44203458335.30UNSPUNSPUNSPunknUNSPUNSPUNSP
112001-02-27 13:43AKSTYesGLS/JHCUSGS1420 FairIceShoreNONE1Imported Channel 1WADEunspeunkno14202514133.44UNSPUNSPUNSPunknUNSPUNSPUNSP
102000-08-30 13:00AKDTYesJHC/SFBUSGS29205.230.012.00Good NONE1Imported Channel 1BOATunspeunkno29202596334.61UNSPUNSPUNSPunknUNSPUNSPUNSP
92000-08-09 12:30AKDTYesJHC/GLSUSGS39905.96-0.033.00Fair NONE1Imported Channel 1BOATunspeunkno39903417755.15UNSPUNSPUNSPunknUNSPUNSPUNSP
82000-07-20 11:00AKDTYesJHC/SFBUSGS60106.600.001.00Fair NONE1Imported Channel 1BOATunspeunkno601034510305.83UNSPUNSPUNSPunknUNSPUNSPUNSP
72000-06-14 11:34AKDTYesJHC/SFBUSGS53806.220.002.00Fair NONE1Imported Channel 1BOATunspeunkno53803439335.77UNSPUNSPUNSPunknUNSPUNSPUNSP
62000-06-02 11:02AKDTYesJHC/GLSUSGS31405.17 Fair NONE1Imported Channel 1BOATunspeunkno31402525945.28UNSPUNSPUNSPunknUNSPUNSPUNSP
51999-09-16 -- ----YesJHC/GLSUSGS3420 Poor NONE1Imported Channel 1BOATunspeunkno34203366775.05UNSPUNSPUNSPunknUNSPUNSPUNSP
41999-08-26 12:00AKDTYesWCS/JMDUSGS3780 Fair NONE1Imported Channel 1BOATunspeunkno37803057495.05UNSPUNSPUNSPunknUNSPUNSPUNSP
31999-07-14 12:30AKDTYesJMD/BXHUSGS6690 Poor NONE1Imported Channel 1BOATunspeunkno669035210506.37UNSPUNSPUNSPunknUNSPUNSPUNSP
21999-06-23 12:30AKDTYesJMD/BXHUSGS10400 Unspecified NONE1Imported Channel 1BOATunspeunkno1040034414407.22UNSPUNSPUNSPunknUNSPUNSPUNSP
11999-06-04 11:20AKDTYesGLS/JMDUSGS3520 Fair NONE1Imported Channel 1BOATunspeunkno35203487334.80UNSPUNSPUNSPunknUNSPUNSPUNSP