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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 12126500 SAMMAMISH RIVER AT BOTHELL, WA
King County, Washington
Hydrologic Unit Code 17110012
Latitude  47°45'20", Longitude 122°12'35" NAD27
Drainage area 212.00  square miles
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)
84M1994-12-12 -- ----YesADMUSGS390 Unspecified NONE1Imported Channel 1UNSPother 390 UNSPUNSPUNSPunknUNSPUNSPUNSP
83M1994-10-07 -- ----YesADMUSGS69.0 Unspecified NONE1Imported Channel 1UNSPother 69.0 UNSPUNSPUNSPunknUNSPUNSPUNSP
82M1994-09-07 -- ----YesADMUSGS67.0 Unspecified NONE1Imported Channel 1UNSPother 67.0 UNSPUNSPUNSPunknUNSPUNSPUNSP
3071994-06-27 12:30PDTYesTENUSGS11421.280.001.20FairVegetationLightNONE1Imported Channel 1CRANunspeunkno11483.04110.23UNSPUNSPUNSPunknUNSPUNSPUNSP
3061994-05-13 14:25PDTYesTENUSGS1750.00-0.051.50FairDebrisLightNONE1Imported Channel 1CRANunspeunkno17584.04130.42UNSPUNSPUNSPunknUNSPUNSPUNSP
3051994-03-16 09:05PSTYesBSPUSGS44720.890.001.20GoodClearNONE1Imported Channel 1CRANunspeunkno44782.04051.10UNSPUNSPUNSPunknUNSPUNSPUNSP
3041994-01-26 14:45PSTYesRDFUSGS42320.080.001.00FairClearNONE1Imported Channel 1CRANunspeunkno42378.03541.19UNSPUNSPUNSPunknUNSPUNSPUNSP
3031993-12-16 13:50PSTYesRDFUSGS50920.330.001.00FairClearNONE1Imported Channel 1CRANunspeunkno50975.03751.36UNSPUNSPUNSPunknUNSPUNSPUNSP
3021993-10-18 10:24PDTYesRDFUSGS11920.220.001.00FairClearNONE1Imported Channel 1CRANunspeunkno11975.03750.32UNSPUNSPUNSPunknUNSPUNSPUNSP
3011993-08-18 13:32PDTYesJEJUSGS14521.14-0.011.30FairClearNONE1Imported Channel 1CRANunspeunkno14586.04470.32UNSPUNSPUNSPunknUNSPUNSPUNSP
74M1993-07-21 -- ----YesADMUSGS333 Unspecified NONE1Imported Channel 1UNSPother 333 UNSPUNSPUNSPunknUNSPUNSPUNSP
2991993-05-19 10:22PDTYesRDFUSGS31721.550.001.20GoodClearNONE1Imported Channel 1CRANunspeunkno31783.04710.67UNSPUNSPUNSPunknUNSPUNSPUNSP
2981993-04-21 11:04PDTYesRDFUSGS53521.390.001.00GoodClearNONE1Imported Channel 1CRANunspeunkno53585.04641.15UNSPUNSPUNSPunknUNSPUNSPUNSP
2971993-03-17 13:25PSTYesJEJUSGS33920.510.001.50GoodClearNONE1Imported Channel 1CRANunspeunkno33979.03940.86UNSPUNSPUNSPunknUNSPUNSPUNSP
2961993-02-17 14:07PSTYesJEJUSGS23919.760.001.50GoodClearNONE1Imported Channel 1CRANunspeunkno23972.03270.73UNSPUNSPUNSPunknUNSPUNSPUNSP
2951993-01-22 15:43PSTYesJEJUSGS37920.090.000.80PoorClearNONE1Imported Channel 1CRANunspeunkno37975.03591.06UNSPUNSPUNSPunknUNSPUNSPUNSP
2941992-12-11 13:58PSTYesRDFUSGS66020.540.001.00GoodClearNONE1Imported Channel 1CRANunspeunkno66080.04101.61UNSPUNSPUNSPunknUNSPUNSPUNSP
2931992-10-15 09:57PDTYesRDFUSGS98.519.740.001.00FairClearNONE1Imported Channel 1CRANunspeunkno98.575.03500.28UNSPUNSPUNSPunknUNSPUNSPUNSP
2921992-08-12 13:50PDTYesRDFUSGS11020.580.001.00FairClearNONE1Imported Channel 1CRANunspeunkno11075.03970.28UNSPUNSPUNSPunknUNSPUNSPUNSP
2911992-07-15 12:55PDTYesRDFUSGS11021.390.002.00GoodClearNONE1Imported Channel 1CRANunspeunkno11084.04600.24UNSPUNSPUNSPunknUNSPUNSPUNSP
2901992-06-05 13:57PDTYesRDFUSGS11821.380.001.50PoorDebrisModerateNONE1Imported Channel 1CRANunspeunkno11883.04690.25UNSPUNSPUNSPunknUNSPUNSPUNSP
2891992-05-01 15:00PDTYesRDFUSGS37321.300.041.80GoodDebrisLightNONE1Imported Channel 1CRANunspeunkno37385.04720.79UNSPUNSPUNSPunknUNSPUNSPUNSP
2881992-03-26 14:30PSTYesRDFUSGS27620.660.021.50GoodClearNONE1Imported Channel 1CRANunspeunkno27675.04000.69UNSPUNSPUNSPunknUNSPUNSPUNSP
2871992-01-22 09:35PSTYesRDF/SAGUSGS31519.86-0.011.00GoodClearNONE1Imported Channel 1CRANunspeunkno31573.03410.94UNSPUNSPUNSPunknUNSPUNSPUNSP
2861991-12-19 14:02PSTYesRDFUSGS45420.610.001.00GoodClearNONE1Imported Channel 1CRANunspeunkno45475.03761.21UNSPUNSPUNSPunknUNSPUNSPUNSP
2851991-11-05 10:30PSTYesRDFUSGS34920.311.102.30FairDebrisLightNONE1Imported Channel 1CRANunspeunkno34975.03870.90UNSPUNSPUNSPunknUNSPUNSPUNSP
2841991-09-17 15:10PDTYesMKB/KEFUSGS12120.080.011.40FairClearNONE1Imported Channel 1CRANunspeunkno12178.03660.33UNSPUNSPUNSPunknUNSPUNSPUNSP
2831991-07-19 12:28PDTYesMKB/SGUSGS12220.800.001.20FairClearNONE1Imported Channel 1WADEunspeunkno12282.04480.27UNSPUNSPUNSPunknUNSPUNSPUNSP
2821991-05-23 14:05PDTYesMKB/KBOUSGS25321.350.021.40FairClearNONE1Imported Channel 1CRANunspeunkno25384.046.90.54UNSPUNSPUNSPunknUNSPUNSPUNSP
2811991-04-01 10:10PSTYesKBOUSGS44021.010.001.00Fair NONE1Imported Channel 1CRANunspeunkno44084.04331.02UNSPUNSPUNSPunknUNSPUNSPUNSP
2801991-02-26 10:03PSTYesKBOUSGS73820.980.010.90GoodClearNONE1Imported Channel 1CRANunspeunkno73881.05021.57UNSPUNSPUNSPunknUNSPUNSPUNSP
2791991-01-23 12:04PSTYesKBOUSGS73220.720.001.00GoodClearNONE1Imported Channel 1CRANunspeunkno73281.04301.70UNSPUNSPUNSPunknUNSPUNSPUNSP
2781990-12-12 11:03PSTYesKBOUSGS99620.960.011.00GoodClearNONE1Imported Channel 1CRANunspeunkno996 4922.03UNSPUNSPUNSPunknUNSPUNSPUNSP
2771990-11-20 13:38PSTYesKBOUSGS71420.660.011.10FairDebrisLightNONE1Imported Channel 1CRANunspeunkno71481.04231.69UNSPUNSPUNSPunknUNSPUNSPUNSP
2761990-10-15 09:50PDTYesKBOUSGS28419.560.101.20FairUnspecifedNONE1Imported Channel 1CRANunspeunkno28477.03670.77UNSPUNSPUNSPunknUNSPUNSPUNSP
2751990-08-29 11:05PDTYesKBOUSGS11219.490.002.00FairUnspecifedNONE1Imported Channel 1CRANunspeunkno11278.03840.29UNSPUNSPUNSPunknUNSPUNSPUNSP
2741990-06-11 12:40PDTYesJWUUSGS59222.330.031.00FairClearNONE1Imported Channel 1CRANunspeunkno59284.04821.23UNSPUNSPUNSPunknUNSPUNSPUNSP
2731990-01-25 12:25PSTYesJWUUSGS576 FairClearNONE1Imported Channel 1CRANunspeunkno57680.03931.46UNSPUNSPUNSPunknUNSPUNSPUNSP
2721989-12-12 12:00PSTYesJWUUSGS68421.490.000.90FairClearNONE1Imported Channel 1CRANunspeunkno68484.03971.72UNSPUNSPUNSPunknUNSPUNSPUNSP
2711989-08-21 11:50PDTYesJWUUSGS99.321.210.001.30Good NONE1Imported Channel 1CRANunspeunkno99.383.03700.27UNSPUNSPUNSPunknUNSPUNSPUNSP
2701989-06-26 13:15PDTYesJWUUSGS11321.48-0.011.00Fair NONE1Imported Channel 1CRANunspeunkno11386.03830.30UNSPUNSPUNSPunknUNSPUNSPUNSP
2691989-04-11 12:35PDTYesJWUUSGS73622.380.021.40GoodClearNONE1Imported Channel 1CRANunspeunkno73687.04711.56UNSPUNSPUNSPunknUNSPUNSPUNSP
2681989-02-07 12:43PSTYesJWUUSGS37520.680.021.20FairClearNONE1Imported Channel 1CRANunspeunkno37576.03341.12UNSPUNSPUNSPunknUNSPUNSPUNSP
2671988-12-02 12:56PSTYesJWUUSGS47821.530.021.80Good NONE1Imported Channel 1CRANunspeunkno47878.03641.31UNSPUNSPUNSPunknUNSPUNSPUNSP
2661988-10-17 11:30PDTYesJWUUSGS16827.480.021.40Poor NONE1Imported Channel 1CRANunspeunkno16878.03290.51UNSPUNSPUNSPunknUNSPUNSPUNSP
2651988-08-05 08:30PDTYesOCHUSGS84.1 Poor NONE1Imported Channel 1UNSPother 84.1 UNSPUNSPUNSPunknUNSPUNSPUNSP
2641988-06-27 -- ----YesOCHUSGS1.57 Fair NONE1Imported Channel 1CRANunspeunkno1.5784.04360.36UNSPUNSPUNSPunknUNSPUNSPUNSP
2631988-03-08 -- ----YesWVFUSGS28122.260.001.30GoodClearNONE1Imported Channel 1CRANunspeunkno28180.03510.80UNSPUNSPUNSPunknUNSPUNSPUNSP
2621988-01-12 -- ----YesWVFUSGS223 Unspecified NONE1Imported Channel 1CRANunspeunkno22375.03230.69UNSPUNSPUNSPunknUNSPUNSPUNSP
2611987-10-05 -- ----YesSNBUSGS69.7 FairClearNONE1Imported Channel 1CRANunspeunkno69.760.02880.24UNSPUNSPUNSPunknUNSPUNSPUNSP
2601987-08-19 -- ----YesSNBUSGS73.1 Fair NONE1Imported Channel 1CRANunspeunkno73.176.03720.20UNSPUNSPUNSPunknUNSPUNSPUNSP
2591987-06-29 -- ----YesSNBUSGS105 Fair NONE1Imported Channel 1CRANunspeunkno10584.04480.23UNSPUNSPUNSPunknUNSPUNSPUNSP
2581987-04-15 -- ----YesSNBUSGS380 GoodClearNONE1Imported Channel 1CRANunspeunkno38083.04370.87UNSPUNSPUNSPunknUNSPUNSPUNSP
32M1987-04-13 -- ----YesADMUSGS380 Unspecified NONE1Imported Channel 1UNSPother 380 UNSPUNSPUNSPunknUNSPUNSPUNSP
2571987-02-10 -- ----YesSNBUSGS650 GoodClearNONE1Imported Channel 1CRANunspeunkno650 0.00UNSPUNSPUNSPunknUNSPUNSPUNSP
2561986-12-16 -- ----YesSNBUSGS423 Good NONE1Imported Channel 1UNSPother 423 UNSPUNSPUNSPunknUNSPUNSPUNSP
2551986-10-06 -- ----YesSNBUSGS107 Good NONE1Imported Channel 1UNSPother 107 UNSPUNSPUNSPunknUNSPUNSPUNSP
2541986-08-14 -- ----YesSNBUSGS83.4 Fair NONE1Imported Channel 1UNSPother 83.4 UNSPUNSPUNSPunknUNSPUNSPUNSP
2531986-07-17 -- ----YesSNBUSGS230 Good NONE1Imported Channel 1UNSPother 230 UNSPUNSPUNSPunknUNSPUNSPUNSP
2521986-06-19 -- ----YesSNBUSGS192 Good NONE1Imported Channel 1UNSPother 192 UNSPUNSPUNSPunknUNSPUNSPUNSP
2511986-05-08 -- ----YesSNBUSGS310 Good NONE1Imported Channel 1UNSPother 310 UNSPUNSPUNSPunknUNSPUNSPUNSP
2501986-04-07 -- ----YesSNBUSGS331 Good NONE1Imported Channel 1UNSPother 331 UNSPUNSPUNSPunknUNSPUNSPUNSP
2491986-02-06 -- ----YesSNBUSGS656 Good NONE1Imported Channel 1UNSPother 656 UNSPUNSPUNSPunknUNSPUNSPUNSP
2481985-12-13 -- ----YesSNBUSGS407 Good NONE1Imported Channel 1UNSPother 407 UNSPUNSPUNSPunknUNSPUNSPUNSP
2471985-11-14 -- ----YesSNBUSGS325 Good NONE1Imported Channel 1UNSPother 325 UNSPUNSPUNSPunknUNSPUNSPUNSP
2461985-10-01 -- ----YesSNBUSGS94.3 Fair NONE1Imported Channel 1UNSPother 94.3 UNSPUNSPUNSPunknUNSPUNSPUNSP
2451985-08-05 -- ----YesSNBUSGS91.4 Fair NONE1Imported Channel 1UNSPother 91.4 UNSPUNSPUNSPunknUNSPUNSPUNSP
2441985-07-01 -- ----YesSNBUSGS140 Fair NONE1Imported Channel 1UNSPother 140 UNSPUNSPUNSPunknUNSPUNSPUNSP
2431985-06-03 -- ----YesSNBUSGS221 Good NONE1Imported Channel 1UNSPother 221 UNSPUNSPUNSPunknUNSPUNSPUNSP
2421985-03-21 -- ----YesSNBUSGS296 Unspecified NONE1Imported Channel 1UNSPother 296 UNSPUNSPUNSPunknUNSPUNSPUNSP
2411984-10-11 -- ----YesBSP/JCTUSGS217 Unspecified NONE1Imported Channel 1UNSPother 217 UNSPUNSPUNSPunknUNSPUNSPUNSP
2401984-08-15 -- ----YesWVFUSGS101 Unspecified NONE1Imported Channel 1UNSPother 101 UNSPUNSPUNSPunknUNSPUNSPUNSP
13M1984-06-04 -- ----YesADMUSGS384 Unspecified NONE1Imported Channel 1UNSPother 384 UNSPUNSPUNSPunknUNSPUNSPUNSP
12M1984-01-31 -- ----YesADMUSGS738 Unspecified NONE1Imported Channel 1UNSPother 738 UNSPUNSPUNSPunknUNSPUNSPUNSP
11M1983-11-04 -- ----YesADMUSGS534 Unspecified NONE1Imported Channel 1UNSPother 534 UNSPUNSPUNSPunknUNSPUNSPUNSP
3001983-07-21 11:07PDTYesRDFUSGS33321.380.001.00Good NONE1Imported Channel 1CRANunspeunkno33382.04750.70UNSPUNSPUNSPunknUNSPUNSPUNSP
10M1983-07-15 -- ----YesADMUSGS199 Unspecified NONE1Imported Channel 1UNSPother 199 UNSPUNSPUNSPunknUNSPUNSPUNSP
9M1983-05-13 -- ----YesADMUSGS224 Unspecified NONE1Imported Channel 1UNSPother 224 UNSPUNSPUNSPunknUNSPUNSPUNSP
8M1983-03-31 -- ----YesADMUSGS575 Unspecified NONE1Imported Channel 1UNSPother 575 UNSPUNSPUNSPunknUNSPUNSPUNSP
7M1983-02-03 -- ----YesADMUSGS534 Unspecified NONE1Imported Channel 1UNSPother 534 UNSPUNSPUNSPunknUNSPUNSPUNSP
6M1982-12-08 -- ----YesADMUSGS866 Unspecified NONE1Imported Channel 1UNSPother 866 UNSPUNSPUNSPunknUNSPUNSPUNSP
5M1982-09-10 -- ----YesADMUSGS239 Unspecified NONE1Imported Channel 1UNSPother 239 UNSPUNSPUNSPunknUNSPUNSPUNSP
4M1982-06-22 -- ----YesADMUSGS116 Unspecified NONE1Imported Channel 1UNSPother 116 UNSPUNSPUNSPunknUNSPUNSPUNSP
3M1982-04-28 -- ----YesADMUSGS404 Unspecified NONE1Imported Channel 1UNSPother 404 UNSPUNSPUNSPunknUNSPUNSPUNSP
2M1964-07-15 -- ----YesADMUSGS300 Unspecified NONE1Imported Channel 1UNSPother 300 UNSPUNSPUNSPunknUNSPUNSPUNSP
1M1963-10-02 -- ----YesADMUSGS106 Unspecified NONE1Imported Channel 1UNSPother 106 UNSPUNSPUNSPunknUNSPUNSPUNSP