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Hydrograph River at a Glance Download
Snoqualmie River at Snoqualmie Falls River Discharge (kcfs)Stage (ft)Observed: 2.74 kcfs at 8:15AM Oct 18, 2014Observed: 2.82 kcfs at 8:30AM Oct 18, 2014Observed: 2.87 kcfs at 8:45AM Oct 18, 2014Observed: 2.94 kcfs at 9:00AM Oct 18, 2014Observed: 2.99 kcfs at 9:15AM Oct 18, 2014Observed: 3.03 kcfs at 9:30AM Oct 18, 2014Observed: 3.3 kcfs at 10:45AM Oct 18, 2014Observed: 3.32 kcfs at 11:00AM Oct 18, 2014Observed: 3.35 kcfs at 11:15AM Oct 18, 2014Observed: 3.39 kcfs at 11:30AM Oct 18, 2014Observed: 3.41 kcfs at 11:45AM Oct 18, 2014Observed: 3.44 kcfs at 12:00PM Oct 18, 2014Observed: 3.45 kcfs at 12:15PM Oct 18, 2014Observed: 3.48 kcfs at 12:30PM Oct 18, 2014Observed: 3.68 kcfs at 2:45PM Oct 18, 2014Observed: 3.7 kcfs at 3:00PM Oct 18, 2014Observed: 3.73 kcfs at 3:15PM Oct 18, 2014Observed: 3.77 kcfs at 3:30PM Oct 18, 2014Observed: 3.77 kcfs at 3:45PM Oct 18, 2014Observed: 3.78 kcfs at 4:00PM Oct 18, 2014Observed: 3.81 kcfs at 4:15PM Oct 18, 2014Highest Observation: 3.83 kcfs at 4:30PM Oct 18, 2014Highest Observation: 3.83 kcfs at 4:45PM Oct 18, 2014Highest Observation: 3.83 kcfs at 5:00PM Oct 18, 2014Observed: 3.81 kcfs at 5:15PM Oct 18, 2014Highest Observation: 3.83 kcfs at 5:30PM Oct 18, 2014Highest Observation: 3.83 kcfs at 5:45PM Oct 18, 2014Observed: 3.81 kcfs at 6:00PM Oct 18, 2014Observed: 3.78 kcfs at 6:15PM Oct 18, 2014Observed: 3.78 kcfs at 6:30PM Oct 18, 2014Observed: 3.77 kcfs at 6:45PM Oct 18, 2014Observed: 3.75 kcfs at 7:00PM Oct 18, 2014Observed: 3.74 kcfs at 7:15PM Oct 18, 2014Observed: 3.71 kcfs at 7:30PM Oct 18, 2014Observed: 3.71 kcfs at 7:45PM Oct 18, 2014Observed: 3.67 kcfs at 8:00PM Oct 18, 2014Observed: 3.62 kcfs at 8:15PM Oct 18, 2014Observed: 3.61 kcfs at 8:30PM Oct 18, 2014Observed: 3.58 kcfs at 8:45PM Oct 18, 2014Observed: 3.58 kcfs at 9:00PM Oct 18, 2014Observed: 3.54 kcfs at 9:15PM Oct 18, 2014Observed: 3.54 kcfs at 9:30PM Oct 18, 2014Observed: 3.54 kcfs at 10:15PM Oct 18, 2014Observed: 3.54 kcfs at 10:30PM Oct 18, 2014Observed: 3.5 kcfs at 10:45PM Oct 18, 2014Observed: 3.47 kcfs at 11:00PM Oct 18, 2014Observed: 3.45 kcfs at 11:15PM Oct 18, 2014Observed: 3.44 kcfs at 11:30PM Oct 18, 2014Observed: 3.4 kcfs at 11:45PM Oct 18, 2014Observed: 3.37 kcfs at 12:00AM Oct 19, 2014Observed: 3.35 kcfs at 12:15AM Oct 19, 2014Observed: 3.33 kcfs at 12:30AM Oct 19, 2014Observed: 3.3 kcfs at 12:45AM Oct 19, 2014Observed: 3.29 kcfs at 1:00AM Oct 19, 2014Observed: 3.26 kcfs at 1:15AM Oct 19, 2014Observed: 3.22 kcfs at 1:30AM Oct 19, 2014Observed: 3.21 kcfs at 1:45AM Oct 19, 2014Observed: 3.18 kcfs at 2:00AM Oct 19, 2014Observed: 3.17 kcfs at 2:15AM Oct 19, 2014Observed: 3.15 kcfs at 2:30AM Oct 19, 2014Observed: 3.02 kcfs at 3:45AM Oct 19, 2014Observed: 2.99 kcfs at 4:00AM Oct 19, 2014Observed: 2.97 kcfs at 4:15AM Oct 19, 2014Observed: 2.97 kcfs at 4:30AM Oct 19, 2014Observed: 2.94 kcfs at 4:45AM Oct 19, 2014Observed: 2.93 kcfs at 5:00AM Oct 19, 2014Observed: 2.89 kcfs at 5:15AM Oct 19, 2014Observed: 2.87 kcfs at 5:30AM Oct 19, 2014Observed: 2.87 kcfs at 5:45AM Oct 19, 2014Observed: 2.85 kcfs at 6:00AM Oct 19, 2014Observed: 2.82 kcfs at 6:15AM Oct 19, 2014Observed: 2.8 kcfs at 6:30AM Oct 19, 2014Observed: 2.78 kcfs at 6:45AM Oct 19, 2014Observed: 2.77 kcfs at 7:00AM Oct 19, 2014Observed: 2.76 kcfs at 7:15AM Oct 19, 2014Observed: 2.73 kcfs at 7:30AM Oct 19, 2014Observed: 2.71 kcfs at 7:45AM Oct 19, 2014Observed: 2.69 kcfs at 8:00AM Oct 19, 2014Observed: 2.67 kcfs at 8:15AM Oct 19, 2014Observed: 2.66 kcfs at 8:30AM Oct 19, 2014Observed: 2.65 kcfs at 8:45AM Oct 19, 2014Observed: 2.64 kcfs at 9:00AM Oct 19, 2014Observed: 2.61 kcfs at 9:15AM Oct 19, 2014Observed: 2.6 kcfs at 9:30AM Oct 19, 2014Observed: 2.59 kcfs at 9:45AM Oct 19, 2014Observed: 2.58 kcfs at 10:00AM Oct 19, 2014Observed: 2.56 kcfs at 10:15AM Oct 19, 2014Observed: 2.55 kcfs at 10:30AM Oct 19, 2014Observed: 2.54 kcfs at 10:45AM Oct 19, 2014Observed: 2.52 kcfs at 11:00AM Oct 19, 2014Observed: 2.51 kcfs at 11:15AM Oct 19, 2014Observed: 2.49 kcfs at 11:30AM Oct 19, 2014Observed: 2.48 kcfs at 11:45AM Oct 19, 2014Observed: 2.46 kcfs at 12:00PM Oct 19, 2014Observed: 2.46 kcfs at 12:15PM Oct 19, 2014Observed: 2.42 kcfs at 12:30PM Oct 19, 2014Observed: 2.42 kcfs at 12:45PM Oct 19, 2014Observed: 2.4 kcfs at 1:00PM Oct 19, 2014Observed: 2.39 kcfs at 1:15PM Oct 19, 2014Observed: 2.38 kcfs at 1:30PM Oct 19, 2014Observed: 2.37 kcfs at 1:45PM Oct 19, 2014Observed: 2.34 kcfs at 2:00PM Oct 19, 2014Observed: 2.34 kcfs at 2:15PM Oct 19, 2014Observed: 2.33 kcfs at 2:30PM Oct 19, 2014Observed: 2.32 kcfs at 2:45PM Oct 19, 2014Observed: 2.31 kcfs at 3:00PM Oct 19, 2014Observed: 2.3 kcfs at 3:15PM Oct 19, 2014Observed: 2.28 kcfs at 3:30PM Oct 19, 2014Observed: 2.25 kcfs at 3:45PM Oct 19, 2014Observed: 2.27 kcfs at 4:00PM Oct 19, 2014Observed: 2.25 kcfs at 4:15PM Oct 19, 2014Observed: 2.23 kcfs at 4:30PM Oct 19, 2014Observed: 2.17 kcfs at 4:45PM Oct 19, 2014Observed: 2.17 kcfs at 5:00PM Oct 19, 2014Observed: 2.16 kcfs at 5:15PM Oct 19, 2014Observed: 2.15 kcfs at 5:30PM Oct 19, 2014Observed: 2.13 kcfs at 5:45PM Oct 19, 2014Observed: 2.12 kcfs at 6:00PM Oct 19, 2014Observed: 2.11 kcfs at 6:15PM Oct 19, 2014Observed: 2.11 kcfs at 6:30PM Oct 19, 2014Observed: 2 kcfs at 10:15PM Oct 19, 2014Observed: 2 kcfs at 10:30PM Oct 19, 2014Observed: 1.99 kcfs at 10:45PM Oct 19, 2014Observed: 1.98 kcfs at 11:00PM Oct 19, 2014Observed: 1.98 kcfs at 11:15PM Oct 19, 2014Observed: 1.96 kcfs at 11:30PM Oct 19, 2014Observed: 1.96 kcfs at 11:45PM Oct 19, 2014Observed: 1.95 kcfs at 12:00AM Oct 20, 2014Observed: 1.94 kcfs at 12:15AM Oct 20, 2014Observed: 1.93 kcfs at 12:30AM Oct 20, 2014Observed: 1.92 kcfs at 12:45AM Oct 20, 2014Observed: 1.91 kcfs at 1:00AM Oct 20, 2014Observed: 1.9 kcfs at 1:15AM Oct 20, 2014Observed: 1.9 kcfs at 1:30AM Oct 20, 2014Observed: 1.9 kcfs at 1:45AM Oct 20, 2014Observed: 1.89 kcfs at 2:00AM Oct 20, 2014Observed: 1.88 kcfs at 2:15AM Oct 20, 2014Observed: 1.87 kcfs at 2:30AM Oct 20, 2014Observed: 1.86 kcfs at 3:45AM Oct 20, 2014Observed: 1.85 kcfs at 4:00AM Oct 20, 2014Observed: 1.84 kcfs at 4:15AM Oct 20, 2014Observed: 1.84 kcfs at 4:30AM Oct 20, 2014Observed: 1.83 kcfs at 4:45AM Oct 20, 2014Observed: 1.83 kcfs at 5:00AM Oct 20, 2014Observed: 1.84 kcfs at 5:15AM Oct 20, 2014Observed: 1.83 kcfs at 5:30AM Oct 20, 2014Observed: 1.82 kcfs at 5:45AM Oct 20, 2014Observed: 1.82 kcfs at 6:00AM Oct 20, 2014Observed: 1.8 kcfs at 6:15AM Oct 20, 2014Observed: 1.81 kcfs at 6:30AM Oct 20, 2014Observed: 1.8 kcfs at 6:45AM Oct 20, 2014Observed: 1.8 kcfs at 7:00AM Oct 20, 2014Observed: 1.8 kcfs at 7:15AM Oct 20, 2014Observed: 1.78 kcfs at 7:30AM Oct 20, 2014Observed: 1.79 kcfs at 7:45AM Oct 20, 2014Observed: 1.77 kcfs at 8:00AM Oct 20, 2014Observed: 1.78 kcfs at 8:15AM Oct 20, 2014Observed: 1.78 kcfs at 8:30AM Oct 20, 2014Observed: 1.77 kcfs at 8:45AM Oct 20, 2014Observed: 1.78 kcfs at 9:00AM Oct 20, 2014Observed: 1.78 kcfs at 9:15AM Oct 20, 2014Observed: 1.79 kcfs at 9:30AM Oct 20, 2014Observed: 1.79 kcfs at 9:45AM Oct 20, 2014Observed: 1.77 kcfs at 10:00AM Oct 20, 2014Observed: 1.77 kcfs at 10:15AM Oct 20, 2014Observed: 1.76 kcfs at 10:30AM Oct 20, 2014Observed: 1.77 kcfs at 10:45AM Oct 20, 2014Observed: 1.76 kcfs at 11:00AM Oct 20, 2014Observed: 1.76 kcfs at 11:15AM Oct 20, 2014Observed: 1.75 kcfs at 11:30AM Oct 20, 2014Observed: 1.75 kcfs at 11:45AM Oct 20, 2014Observed: 1.74 kcfs at 12:00PM Oct 20, 2014Observed: 1.75 kcfs at 12:15PM Oct 20, 2014Observed: 1.75 kcfs at 12:30PM Oct 20, 2014Observed: 1.74 kcfs at 12:45PM Oct 20, 2014Observed: 1.76 kcfs at 1:00PM Oct 20, 2014Observed: 1.77 kcfs at 1:15PM Oct 20, 2014Observed: 1.77 kcfs at 1:30PM Oct 20, 2014Observed: 1.75 kcfs at 1:45PM Oct 20, 2014Observed: 1.75 kcfs at 2:00PM Oct 20, 2014Observed: 1.74 kcfs at 2:15PM Oct 20, 2014Observed: 1.74 kcfs at 2:30PM Oct 20, 2014Observed: 1.74 kcfs at 2:45PM Oct 20, 2014Observed: 1.74 kcfs at 3:00PM Oct 20, 2014Observed: 1.74 kcfs at 3:15PM Oct 20, 2014Observed: 1.74 kcfs at 3:30PM Oct 20, 2014Observed: 1.75 kcfs at 4:30PM Oct 20, 2014Observed: 1.74 kcfs at 4:45PM Oct 20, 2014Observed: 1.74 kcfs at 5:00PM Oct 20, 2014Observed: 1.74 kcfs at 5:15PM Oct 20, 2014Observed: 1.74 kcfs at 5:30PM Oct 20, 2014Observed: 1.75 kcfs at 5:45PM Oct 20, 2014Observed: 1.75 kcfs at 6:00PM Oct 20, 2014Observed: 1.75 kcfs at 6:15PM Oct 20, 2014Observed: 1.75 kcfs at 6:30PM Oct 20, 2014Observed: 1.76 kcfs at 6:45PM Oct 20, 2014Observed: 1.75 kcfs at 7:00PM Oct 20, 2014Observed: 1.76 kcfs at 7:15PM Oct 20, 2014Observed: 1.76 kcfs at 7:30PM Oct 20, 2014Observed: 1.76 kcfs at 8:45PM Oct 20, 2014Observed: 1.76 kcfs at 9:00PM Oct 20, 2014Observed: 1.76 kcfs at 9:15PM Oct 20, 2014Observed: 1.77 kcfs at 9:30PM Oct 20, 2014Observed: 1.76 kcfs at 10:15PM Oct 20, 2014Observed: 1.77 kcfs at 10:30PM Oct 20, 2014Observed: 1.77 kcfs at 10:45PM Oct 20, 2014Observed: 1.77 kcfs at 11:00PM Oct 20, 2014Observed: 1.76 kcfs at 11:15PM Oct 20, 2014Observed: 1.76 kcfs at 11:30PM Oct 20, 2014Observed: 1.77 kcfs at 11:45PM Oct 20, 2014Observed: 1.76 kcfs at 12:00AM Oct 21, 2014Observed: 1.77 kcfs at 12:15AM Oct 21, 2014Observed: 1.77 kcfs at 12:30AM Oct 21, 2014Observed: 1.77 kcfs at 12:45AM Oct 21, 2014Observed: 1.77 kcfs at 1:00AM Oct 21, 2014Observed: 1.77 kcfs at 1:15AM Oct 21, 2014Observed: 1.77 kcfs at 1:30AM Oct 21, 2014Observed: 1.77 kcfs at 1:45AM Oct 21, 2014Observed: 1.77 kcfs at 2:00AM Oct 21, 2014Observed: 1.76 kcfs at 2:15AM Oct 21, 2014Observed: 1.76 kcfs at 2:30AM Oct 21, 2014Observed: 1.76 kcfs at 2:45AM Oct 21, 2014Observed: 1.76 kcfs at 3:00AM Oct 21, 2014Observed: 1.74 kcfs at 3:15AM Oct 21, 2014Observed: 1.75 kcfs at 3:30AM Oct 21, 2014Observed: 1.75 kcfs at 3:45AM Oct 21, 2014Observed: 1.74 kcfs at 4:00AM Oct 21, 2014Observed: 1.74 kcfs at 4:15AM Oct 21, 2014Observed: 1.74 kcfs at 4:30AM Oct 21, 2014Observed: 1.73 kcfs at 4:45AM Oct 21, 2014Observed: 1.74 kcfs at 5:00AM Oct 21, 2014Observed: 1.75 kcfs at 5:15AM Oct 21, 2014Observed: 1.74 kcfs at 5:30AM Oct 21, 2014Observed: 1.74 kcfs at 5:45AM Oct 21, 2014Observed: 1.74 kcfs at 6:00AM Oct 21, 2014Observed: 1.74 kcfs at 6:15AM Oct 21, 2014Observed: 1.74 kcfs at 6:30AM Oct 21, 2014Observed: 1.73 kcfs at 6:45AM Oct 21, 2014Observed: 1.74 kcfs at 7:00AM Oct 21, 2014Observed: 1.74 kcfs at 7:15AM Oct 21, 2014Observed: 1.74 kcfs at 7:30AM Oct 21, 2014Forecast: 1.63 kcfs 11:00AM Oct 21, 2014Forecast: 1.53 kcfs 5:00PM Oct 21, 2014Forecast: 1.51 kcfs 11:00PM Oct 21, 2014Forecast: 2.15 kcfs 5:00AM Oct 22, 2014Forecast: 4.72 kcfs 11:00AM Oct 22, 2014Forecast: 7.14 kcfs 5:00PM Oct 22, 2014Highest Forecast: 7.68 kcfs 11:00PM Oct 22, 2014Forecast: 7.09 kcfs 5:00AM Oct 23, 2014Forecast: 5.83 kcfs 11:00AM Oct 23, 2014Forecast: 5.01 kcfs 5:00PM Oct 23, 2014Forecast: 4.57 kcfs 11:00PM Oct 23, 2014Forecast: 4.01 kcfs 5:00AM Oct 24, 2014USGS--Water Resources of the United StatesSQUW1(plotting QRIRV) Graph Created (8:03AM Oct 21, 2014)ObservedForecast (issued 8:24AM Oct 20)Latest observed value: 1.74 kcfs at 7:30 AM PDT 21-Oct-2014. Flood Flow is 20 kcfs
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About this graph
Tabular Data (UTC)
Tabular Data (PDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: The above river forecast includes future rainfall. Forecast stages may be different if the rainfall does not occur.

Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions

NOTE: Forecasts for the Snoqualmie River at Snoqualmie Falls are issued routinely year-round.

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Downstream Gauge Downstream Gauge - near Carnation
Flood Categories (in KCFS)
Major Flood Flow:41
Moderate Flood Flow:31
Flood Flow:20
Action Flow:0

Historical Crests
(1) 78,800 cfs on 11/24/1990
(2) 61,000 cfs on 11/23/1959
(3) 58,100 cfs on 11/24/1986
(4) 54,900 cfs on 11/07/2006 (P)
(5) 53,800 cfs on 12/02/1977
(6) 51,800 cfs on 12/03/1975
(7) 51,700 cfs on 02/09/1996
(8) 50,200 cfs on 11/29/1995 (P)
(9) 48,100 cfs on 01/18/1975
(10) 44,000 cfs on 11/09/1989
Show More Historical Crests

(P): Preliminary values subject to further review.

Low Water Records
Zoom Level:16
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Gauge LocationGauge Map Marker
Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
70000 the Snoqualmie River will cause severe near record flooding from the town of Snoqualmie downstream through Fall City. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Snoqualmie River Basin. This river level on the Snoqualmie corresponds to a phase 4 flood in the King County flood system.
55000 the Snoqualmie River will cause major flooding from the town of Snoqualmie downstream through Fall City...inundating most of the farm land in the flood plain...some residential areas...and many roads. Flood waters will be deep and swift in some areas. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Snoqualmie River Basin. This river level on the Snoqualmie corresponds roughly to a phase 4 flood in the King County flood system.
41000 the Snoqualmie River will cause major flooding from the town of Snoqualmie downstream through Fall City...inundating most of the farm land in the flood plain...some residential areas...and many roads. Flood waters will be deep and swift in some areas. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Snoqualmie River Basin. This river level on the Snoqualmie corresponds roughly to a phase 4 flood in the King County flood system.
30000 the Snoqualmie River will cause widespread flooding of pasture lands and roads along the river from the town of Snoqualmie downstream through Fall City. Roads that may become flooded include Fall City-Carnation...Tolt Hill...and Novelty Flats Roads. This river level on the Snoqualmie corresponds roughly to a phase 3 flood in the King County flood system.
20000 the Snoqualmie River will cause widespread flooding of pasture lands and roads along the river from the town of Snoqualmie downstream through Fall City. Roads that may become flooded include Fall City-Carnation...Tolt Hill...and Novelty Flats Roads. This river level on the Snoqualmie corresponds roughly to a phase 3 flood in the King County flood system.
12000 the Snoqualmie River will spill over its banks between the town of Snoqualmie and Fall City...covering pasture lands and several roads along the river. This river level on the Snoqualmie corresponds roughly to a phase 2 flood in the King County flood system.
About This Location Collapse

Latitude: 47.545278° N, Longitude: 121.841111° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS flow Not Available Not Available Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
Elevation
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other 120 Not Available  

Current/Historical Observations:

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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
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Page last modified: 5-Aug-2014 6:36 PM
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