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Live/Water/Washington/Chehalis River near Grand Mound

Chehalis River near Grand Mound

A gauge on the Chehalis River in Thurston County, Washington. Its stage was 128.82 ft as of Oct 15, 10:00 PM PDT.

Gauge CGMW1Thurston County, WashingtonEvery gauge in Washington

Stage now
128.82 ftreported Oct 15, 10:00 PM PDT
24 hour change
Fell 0.03 ftsince Oct 14, 10:00 PM
Rank
514of 1,451 in Washington, Oct 16
Elevation
164 ftabove sea level
County
Thurston County
Position
46.7833° N, 123.0333° W
Record since
2010

Water level

Chehalis River near Grand Mound

Stage is the height of the water's surface above the gauge's own fixed zero, in feet, not the depth of the water. Every point drawn is a reading the gauge sent, at the time it sent it.

Water level, 24 hours at Chehalis River near Grand Mound: the water from 128.82 to 128.85 feet of stage, the latest 128.82 feet.WATER LEVEL, 24 HOURSFTHIGH 128.85 FT, OCT 14, 10:30 PM · LOW 128.82 FT, OCT 15, 12:15 PM128.78128.80128.82128.85128.88128.90Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PM128.82
Latest
128.82 ftOct 15, 10:00 PM
Highest
128.85 ftOct 14, 10:30 PM
Lowest
128.82 ftOct 15, 12:15 PM
Range
0.03 fthighest less lowest
Change
Fell 0.03 ftsince Oct 14, 10:30 PM
Readings
87
The readings these charts were drawn from, as a table
TimeStage ft
Oct 15, 10:00 PM128.82
Oct 15, 9:45 PM128.82
Oct 15, 9:30 PM128.82
Oct 15, 9:15 PM128.82
Oct 15, 9:00 PM128.82
Oct 15, 8:45 PM128.82
Oct 15, 8:30 PM128.82
Oct 15, 8:15 PM128.82
Oct 15, 8:00 PM128.82
Oct 15, 7:45 PM128.82
Oct 15, 7:30 PM128.82
Oct 15, 7:15 PM128.82
Oct 15, 7:00 PM128.82
Oct 15, 6:45 PM128.82
Oct 15, 6:30 PM128.82
Oct 15, 6:15 PM128.82
Oct 15, 6:00 PM128.82
Oct 15, 5:45 PM128.82
Oct 15, 5:30 PM128.82
Oct 15, 5:15 PM128.82
Oct 15, 5:00 PM128.82
Oct 15, 4:45 PM128.82
Oct 15, 4:30 PM128.82
Oct 15, 4:15 PM128.82
Oct 15, 4:00 PM128.82
Oct 15, 3:45 PM128.82
Oct 15, 3:30 PM128.82
Oct 15, 3:15 PM128.82
Oct 15, 3:00 PM128.82
Oct 15, 2:45 PM128.82
Oct 15, 2:30 PM128.82
Oct 15, 2:15 PM128.82
Oct 15, 1:00 PM128.82
Oct 15, 12:45 PM128.82
Oct 15, 12:30 PM128.82
Oct 15, 12:15 PM128.82
Oct 15, 12:00 PM128.83
Oct 15, 11:45 AM128.83
Oct 15, 11:30 AM128.83
Oct 15, 11:15 AM128.83
Oct 15, 11:00 AM128.83
Oct 15, 10:45 AM128.83
Oct 15, 10:30 AM128.83
Oct 15, 10:15 AM128.83
Oct 15, 9:00 AM128.83
Oct 15, 8:45 AM128.83
Oct 15, 8:30 AM128.83
Oct 15, 8:15 AM128.83
Oct 15, 8:00 AM128.83
Oct 15, 7:45 AM128.83
Oct 15, 7:30 AM128.83
Oct 15, 7:15 AM128.83
Oct 15, 7:00 AM128.83
Oct 15, 6:45 AM128.83
Oct 15, 6:30 AM128.83
Oct 15, 6:15 AM128.83
Oct 15, 6:00 AM128.83
Oct 15, 5:45 AM128.83
Oct 15, 5:30 AM128.83
Oct 15, 5:15 AM128.83
Oct 15, 5:00 AM128.83
Oct 15, 4:45 AM128.83
Oct 15, 4:30 AM128.83
Oct 15, 4:15 AM128.83
Oct 15, 4:00 AM128.83
Oct 15, 3:45 AM128.83
Oct 15, 3:30 AM128.83
Oct 15, 3:15 AM128.83
Oct 15, 3:00 AM128.83
Oct 15, 2:45 AM128.83
Oct 15, 2:30 AM128.83
Oct 15, 2:15 AM128.84
Oct 15, 2:00 AM128.84
Oct 15, 1:45 AM128.84
Oct 15, 1:30 AM128.84
Oct 15, 1:15 AM128.84
Oct 15, 1:00 AM128.84
Oct 15, 12:45 AM128.84
Oct 15, 12:30 AM128.84
Oct 15, 12:15 AM128.84
Oct 15, 12:00 AM128.84
Oct 14, 11:45 PM128.84
Oct 14, 11:30 PM128.84
Oct 14, 11:15 PM128.84
Oct 14, 11:00 PM128.85
Oct 14, 10:45 PM128.85
Oct 14, 10:30 PM128.85
Water level, 7 days at Chehalis River near Grand Mound: the water from 128.82 to 128.92 feet of stage, the latest 128.82 feet.WATER LEVEL, 7 DAYSFTHIGH 128.92 FT, OCT 11, 1:00 PM · LOW 128.82 FT, OCT 15, 12:15 PM128.80128.82128.85128.88128.90128.93128.95Fri 9Sat 10Sun 11Mon 12Tue 13Wed 14Thu 15128.82
Latest
128.82 ftOct 15, 10:00 PM
Highest
128.92 ftOct 11, 1:00 PM
Lowest
128.82 ftOct 15, 12:15 PM
Range
0.10 fthighest less lowest
Change
Fell 0.03 ftsince Oct 8, 10:30 PM
Readings
655
The readings these charts were drawn from, as a table
TimeStage ft
Oct 15, 10:00 PM128.82
Oct 15, 9:45 PM128.82
Oct 15, 8:45 PM128.82
Oct 15, 7:45 PM128.82
Oct 15, 6:45 PM128.82
Oct 15, 5:45 PM128.82
Oct 15, 4:45 PM128.82
Oct 15, 3:45 PM128.82
Oct 15, 2:45 PM128.82
Oct 15, 1:00 PM128.82
Oct 15, 12:45 PM128.82
Oct 15, 11:45 AM128.83
Oct 15, 10:45 AM128.83
Oct 15, 9:00 AM128.83
Oct 15, 8:45 AM128.83
Oct 15, 7:45 AM128.83
Oct 15, 6:45 AM128.83
Oct 15, 5:45 AM128.83
Oct 15, 4:45 AM128.83
Oct 15, 3:45 AM128.83
Oct 15, 2:45 AM128.83
Oct 15, 1:45 AM128.84
Oct 15, 12:45 AM128.84
Oct 14, 11:45 PM128.84
Oct 14, 10:45 PM128.85
Oct 14, 9:45 PM128.85
Oct 14, 8:45 PM128.85
Oct 14, 7:45 PM128.86
Oct 14, 6:45 PM128.86
Oct 14, 5:45 PM128.87
Oct 14, 4:45 PM128.87
Oct 14, 3:45 PM128.87
Oct 14, 2:45 PM128.87
Oct 14, 1:45 PM128.87
Oct 14, 12:45 PM128.87
Oct 14, 11:45 AM128.87
Oct 14, 10:45 AM128.87
Oct 14, 9:45 AM128.87
Oct 14, 8:00 AM128.87
Oct 14, 7:45 AM128.87
Oct 14, 6:45 AM128.87
Oct 14, 5:45 AM128.87
Oct 14, 4:45 AM128.87
Oct 14, 3:45 AM128.87
Oct 14, 2:45 AM128.87
Oct 14, 1:45 AM128.88
Oct 14, 12:45 AM128.88
Oct 13, 11:45 PM128.88
Oct 13, 10:45 PM128.88
Oct 13, 9:45 PM128.88
Oct 13, 8:45 PM128.88
Oct 13, 7:45 PM128.88
Oct 13, 6:45 PM128.88
Oct 13, 5:45 PM128.88
Oct 13, 4:45 PM128.88
Oct 13, 3:45 PM128.88
Oct 13, 2:45 PM128.88
Oct 13, 1:45 PM128.88
Oct 13, 12:45 PM128.88
Oct 13, 11:45 AM128.88
Oct 13, 10:45 AM128.88
Oct 13, 9:45 AM128.88
Oct 13, 8:45 AM128.88
Oct 13, 7:45 AM128.88
Oct 13, 6:45 AM128.88
Oct 13, 5:45 AM128.88
Oct 13, 4:45 AM128.88
Oct 13, 3:45 AM128.88
Oct 13, 2:45 AM128.88
Oct 13, 1:45 AM128.88
Oct 13, 12:45 AM128.89
Oct 12, 11:45 PM128.89
Oct 12, 10:45 PM128.89
Oct 12, 9:45 PM128.89
Oct 12, 8:45 PM128.89
Oct 12, 7:45 PM128.89
Oct 12, 6:45 PM128.89
Oct 12, 5:45 PM128.89
Oct 12, 4:45 PM128.89
Oct 12, 3:45 PM128.90
Oct 12, 2:45 PM128.90
Oct 12, 1:45 PM128.90
Oct 12, 12:45 PM128.90
Oct 12, 11:45 AM128.90
Oct 12, 10:45 AM128.90
Oct 12, 9:45 AM128.90
Oct 12, 8:00 AM128.90
Oct 12, 7:45 AM128.90
Oct 12, 6:45 AM128.90
Oct 12, 5:45 AM128.90
Oct 12, 4:45 AM128.90
Oct 12, 3:45 AM128.90
Oct 12, 2:45 AM128.90
Oct 12, 1:45 AM128.90
Oct 12, 12:45 AM128.90
Oct 11, 11:45 PM128.90
Oct 11, 10:45 PM128.90
Oct 11, 9:45 PM128.90
Oct 11, 8:45 PM128.90
Oct 11, 7:45 PM128.90
Oct 11, 6:45 PM128.90
Oct 11, 5:45 PM128.90
Oct 11, 4:45 PM128.91
Oct 11, 3:45 PM128.91
Oct 11, 2:45 PM128.91
Oct 11, 1:45 PM128.92
Oct 11, 12:45 PM128.91
Oct 11, 11:45 AM128.91
Oct 11, 10:45 AM128.91
Oct 11, 9:45 AM128.91
Oct 11, 8:45 AM128.91
Oct 11, 7:45 AM128.91
Oct 11, 6:45 AM128.91
Oct 11, 5:45 AM128.91
Oct 11, 4:45 AM128.91
Oct 11, 3:45 AM128.91
Oct 11, 2:45 AM128.91
Oct 11, 1:45 AM128.90
Oct 11, 12:45 AM128.90
Oct 10, 11:45 PM128.90
Oct 10, 10:45 PM128.90
Oct 10, 9:45 PM128.89
Oct 10, 8:45 PM128.89
Oct 10, 7:45 PM128.89
Oct 10, 6:45 PM128.89
Oct 10, 5:45 PM128.89
Oct 10, 4:45 PM128.89
Oct 10, 3:45 PM128.89
Oct 10, 2:45 PM128.89
Oct 10, 1:45 PM128.89
Oct 10, 12:45 PM128.89
Oct 10, 11:45 AM128.89
Oct 10, 10:45 AM128.89
Oct 10, 9:45 AM128.89
Oct 10, 8:45 AM128.89
Oct 10, 7:45 AM128.89
Oct 10, 6:45 AM128.89
Oct 10, 5:45 AM128.89
Oct 10, 4:45 AM128.89
Oct 10, 3:45 AM128.89
Oct 10, 2:45 AM128.89
Oct 10, 1:45 AM128.89
Oct 10, 12:45 AM128.89
Oct 9, 11:45 PM128.89
Oct 9, 10:45 PM128.88
Oct 9, 9:45 PM128.88
Oct 9, 8:45 PM128.87
Oct 9, 7:45 PM128.86
Oct 9, 6:45 PM128.86
Oct 9, 5:45 PM128.85
Oct 9, 4:45 PM128.85
Oct 9, 3:45 PM128.85
Oct 9, 2:45 PM128.85
Oct 9, 1:45 PM128.85
Oct 9, 12:45 PM128.85
Oct 9, 11:45 AM128.85
Oct 9, 10:45 AM128.85
Oct 9, 9:45 AM128.85
Oct 9, 8:45 AM128.84
Oct 9, 7:45 AM128.84
Oct 9, 6:45 AM128.84
Oct 9, 5:45 AM128.84
Oct 9, 4:45 AM128.84
Oct 9, 3:45 AM128.84
Oct 9, 2:45 AM128.85
Oct 9, 1:45 AM128.85
Oct 9, 12:45 AM128.85
Oct 8, 11:45 PM128.85
Oct 8, 10:45 PM128.85
Water level, 30 days at Chehalis River near Grand Mound: the water from 128.76 to 129.68 feet of stage, the latest 128.82 feet.WATER LEVEL, 30 DAYSFTHIGH 129.68 FT, SEP 26, 10:45 PM · LOW 128.76 FT, SEP 23, 9:45 AM128.8129.0129.3129.5129.8130.0Sep 16Sep 21Sep 26Oct 1Oct 6Oct 11128.82
Latest
128.82 ftOct 15, 10:00 PM
Highest
129.68 ftSep 26, 10:45 PM
Lowest
128.76 ftSep 23, 9:45 AM
Range
0.92 fthighest less lowest
Change
Fell 0.13 ftsince Sep 15, 10:30 PM
Readings
2,803
The readings these charts were drawn from, as a table
DayHigh ftLow ftAverage ftLast ftReadings
Oct 15128.84128.82128.83128.8281
Oct 14128.88128.84128.87128.8492
Oct 13128.89128.88128.88128.8896
Oct 12128.90128.89128.90128.8992
Oct 11128.92128.90128.91128.9096
Oct 10128.90128.89128.89128.9096
Oct 9128.89128.84128.85128.8996
Oct 8128.88128.84128.85128.8596
Oct 7128.90128.88128.89128.8892
Oct 6128.91128.90128.90128.9096
Oct 5128.93128.91128.92128.9196
Oct 4128.95128.93128.94128.9396
Oct 3128.99128.95128.97128.9596
Oct 2129.03128.99129.02128.9992
Oct 1129.03128.93128.99129.0396
Sep 30129.01128.92128.95128.9392
Sep 29129.11129.01129.05129.0196
Sep 28129.33129.11129.21129.1196
Sep 27129.68129.34129.53129.3496
Sep 26129.68128.95129.28129.6896
Sep 25128.95128.89128.92128.9596
Sep 24128.89128.77128.82128.8996
Sep 23128.79128.76128.77128.7792
Sep 22128.82128.79128.82128.7988
Sep 21128.83128.82128.82128.8292
Sep 20128.83128.82128.82128.8391
Sep 19128.85128.83128.84128.8477
Sep 18128.83128.82128.83128.8392
Sep 17128.88128.82128.84128.8292
Sep 16128.95128.88128.92128.8896
Sep 15128.95128.95128.95128.956

How it reports

Rank
514of 1,451 in Washington, Oct 16
Schedule
every houron the hour's :00
Reports received, 24 hours
21 of 2487.5% of its schedule
Reports received, 7 days
163 of 16897.0% of its schedule
Longest silence, 7 days
2 hoursfrom Oct 12, 8:00 AM
Latest report
Oct 15, 10:00 PMlocal time
Time to reach Storm Station
17 min9 in 10 within 19 min

From Storm Station's own record of every report it heard from this station.

Its schedule is one report every hour, 24 in 24 hours. Two reports in the same hour count as one received.

Ranking Statistics

247 score95.7of 100

Washington median
93.9the median score of 1,451 stations
Scoring higher
497stations in Washington
Sharing its score
17ranks 498 to 514
Points deducted
4.31.4 arrival, 1.1 reports received, 1.0 accuracy, 0.9 forecast check
Counted at the median
Accuracy, instrument checks, forecast checknot measured at this station; Washington median 95.0, 100.0, 90.8
Next above
TGAW1rank 512; ahead on reports received 98.5% against 97.0%
Next below
TIWrank 515; behind on 247 score 95.7 against 95.6

Equal scores are ordered by the share of scheduled reports received, then the reports due in the week (the longer record first), then the median arrival, then the longest silence.

  1. Reports receivedweight 3597.034.0 of 35 pointsWashington median 98.7163 of 168 scheduled reports received in 7 days
  2. Arrivalweight 1086.28.6 of 10 pointsWashington median 90.6half its reports arrived within 17 min
  3. Continuityweight 10100.010.0 of 10 pointsWashington median 100.0longest silence 2 h, on a schedule of one report every 60 min
  4. Accuracyweight 20-19.0 of 20 points, at the medianWashington median 95.0-
  5. Instrument checksweight 15-15.0 of 15 points, at the medianWashington median 100.0-
  6. Forecast checkweight 10-9.1 of 10 points, at the medianWashington median 90.8-

The score is the weighted mean of its six parts, from the last 7 days. How a station is ranked sets out each part.

How each part is scored
Reports received
Full marks for every scheduled report received, none for none, in proportion between
Arrival
Full marks for a median arrival within 10 min, none at 60 min
Continuity
Full marks for a longest silence of 3 reports or less (3 h), none for 72 (72 h)
Accuracy
Full marks within 1.5 °F of its reference, typically, none beyond 8.0 °F
Instrument checks
Full marks for no reading failed, none for 5 per cent or more
Forecast check
Full marks within 2 °F of the forecast on average, none at 8 °F

Near Chehalis River near Grand Mound

How to read a gauge

A gauge measures the height of the water where it stands, its stage, in feet above a fixed mark at that gauge. Two gauges' stages are not comparable: each is measured from its own mark, and a reservoir's is often its height above sea level.

The stage shown is the latest the gauge reported, with the time it reported it. Storm Station hears each gauge on its own schedule and ranks it among its state's stations by its 247 score, how reliably it reports and how its readings hold up: that is its 247 rank.