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Live/Water/California/Alviso Slough

Alviso Slough

A gauge on the Alviso Slough in Santa Clara County, California. Its stage was 2.38 ft as of Oct 15, 9:00 PM PDT.

Gauge ALVC1Santa Clara County, CaliforniaEvery gauge in California

Stage now
2.38 ftreported Oct 15, 9:00 PM PDT
24 hour change
Rose 0.74 ftsince Oct 14, 9:00 PM
Rank
1,888of 4,465 in California, Oct 16
Elevation
7 ftabove sea level
County
Santa Clara County
Position
37.4367° N, 121.9910° W
Record since
2026

Water level

Alviso Slough

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 Alviso Slough: the water from 0.37 to 7.69 feet of stage, the latest 2.38 feet.WATER LEVEL, 24 HOURSFTHIGH 7.69 FT, OCT 15, 3:45 PM · LOW 0.37 FT, OCT 14, 11:00 PM0246810Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PM2.38
Latest
2.38 ftOct 15, 9:00 PM
Highest
7.69 ftOct 15, 3:45 PM
Lowest
0.37 ftOct 14, 11:00 PM
Range
7.32 fthighest less lowest
Change
Rose 1.17 ftsince Oct 14, 9:30 PM
Readings
95
The readings these charts were drawn from, as a table
TimeStage ft
Oct 15, 9:00 PM2.38
Oct 15, 8:45 PM2.65
Oct 15, 8:30 PM2.90
Oct 15, 8:15 PM3.17
Oct 15, 8:00 PM3.44
Oct 15, 7:45 PM3.70
Oct 15, 7:30 PM3.98
Oct 15, 7:15 PM4.28
Oct 15, 7:00 PM4.61
Oct 15, 6:45 PM4.96
Oct 15, 6:30 PM5.27
Oct 15, 6:15 PM5.51
Oct 15, 6:00 PM5.74
Oct 15, 5:45 PM6.05
Oct 15, 5:30 PM6.45
Oct 15, 5:15 PM6.84
Oct 15, 5:00 PM7.18
Oct 15, 4:45 PM7.43
Oct 15, 4:30 PM7.60
Oct 15, 4:15 PM7.68
Oct 15, 4:00 PM7.67
Oct 15, 3:45 PM7.69
Oct 15, 3:30 PM7.67
Oct 15, 3:15 PM7.64
Oct 15, 3:00 PM7.55
Oct 15, 2:45 PM7.47
Oct 15, 2:30 PM7.36
Oct 15, 2:15 PM7.19
Oct 15, 2:00 PM7.03
Oct 15, 1:45 PM6.78
Oct 15, 1:30 PM6.47
Oct 15, 1:15 PM6.14
Oct 15, 1:00 PM5.79
Oct 15, 12:45 PM5.52
Oct 15, 12:30 PM5.30
Oct 15, 12:15 PM5.06
Oct 15, 12:00 PM4.78
Oct 15, 11:45 AM4.47
Oct 15, 11:30 AM4.11
Oct 15, 11:15 AM3.73
Oct 15, 11:00 AM3.43
Oct 15, 10:45 AM3.26
Oct 15, 10:30 AM3.19
Oct 15, 10:15 AM3.17
Oct 15, 10:00 AM3.19
Oct 15, 9:45 AM3.24
Oct 15, 9:30 AM3.36
Oct 15, 9:15 AM3.52
Oct 15, 9:00 AM3.69
Oct 15, 8:45 AM3.89
Oct 15, 8:30 AM4.09
Oct 15, 8:15 AM4.28
Oct 15, 8:00 AM4.49
Oct 15, 7:45 AM4.79
Oct 15, 7:30 AM5.03
Oct 15, 7:15 AM5.24
Oct 15, 7:00 AM5.43
Oct 15, 6:45 AM5.64
Oct 15, 6:30 AM5.80
Oct 15, 6:15 AM6.01
Oct 15, 6:00 AM6.21
Oct 15, 5:45 AM6.36
Oct 15, 5:30 AM6.46
Oct 15, 5:15 AM6.51
Oct 15, 5:00 AM6.55
Oct 15, 4:45 AM6.55
Oct 15, 4:30 AM6.52
Oct 15, 4:15 AM6.39
Oct 15, 4:00 AM6.21
Oct 15, 3:45 AM5.96
Oct 15, 3:30 AM5.71
Oct 15, 3:15 AM5.56
Oct 15, 3:00 AM5.32
Oct 15, 2:45 AM5.06
Oct 15, 2:30 AM4.73
Oct 15, 2:15 AM4.37
Oct 15, 2:00 AM3.96
Oct 15, 1:45 AM3.57
Oct 15, 1:30 AM3.17
Oct 15, 1:15 AM2.71
Oct 15, 1:00 AM2.34
Oct 15, 12:45 AM1.93
Oct 15, 12:30 AM1.52
Oct 15, 12:15 AM1.16
Oct 15, 12:00 AM0.84
Oct 14, 11:45 PM0.59
Oct 14, 11:30 PM0.45
Oct 14, 11:15 PM0.38
Oct 14, 11:00 PM0.37
Oct 14, 10:45 PM0.47
Oct 14, 10:30 PM0.55
Oct 14, 10:15 PM0.67
Oct 14, 10:00 PM0.82
Oct 14, 9:45 PM1.00
Oct 14, 9:30 PM1.21
Water level, 7 days at Alviso Slough: the water from 0.26 to 9.45 feet of stage, the latest 2.38 feet.WATER LEVEL, 7 DAYSFTHIGH 9.45 FT, OCT 10, 1:45 PM · LOW 0.26 FT, OCT 13, 10:30 PM03581013Fri 9Sat 10Sun 11Mon 12Tue 13Wed 14Thu 152.38
Latest
2.38 ftOct 15, 9:00 PM
Highest
9.45 ftOct 10, 1:45 PM
Lowest
0.26 ftOct 13, 10:30 PM
Range
9.19 fthighest less lowest
Change
Fell 3.05 ftsince Oct 8, 9:30 PM
Readings
667
The readings these charts were drawn from, as a table
TimeStage ft
Oct 15, 9:00 PM2.38
Oct 15, 8:45 PM2.65
Oct 15, 7:45 PM3.70
Oct 15, 6:45 PM4.96
Oct 15, 5:45 PM6.05
Oct 15, 4:45 PM7.43
Oct 15, 3:45 PM7.69
Oct 15, 2:45 PM7.47
Oct 15, 1:45 PM6.78
Oct 15, 12:45 PM5.52
Oct 15, 11:45 AM4.47
Oct 15, 10:45 AM3.26
Oct 15, 9:45 AM3.24
Oct 15, 8:45 AM3.89
Oct 15, 7:45 AM4.79
Oct 15, 6:45 AM5.64
Oct 15, 5:45 AM6.36
Oct 15, 4:45 AM6.55
Oct 15, 3:45 AM5.96
Oct 15, 2:45 AM5.06
Oct 15, 1:45 AM3.57
Oct 15, 12:45 AM1.93
Oct 14, 11:45 PM0.59
Oct 14, 10:45 PM0.47
Oct 14, 9:45 PM1.00
Oct 14, 8:45 PM1.88
Oct 14, 7:45 PM3.03
Oct 14, 6:45 PM4.26
Oct 14, 5:45 PM5.69
Oct 14, 4:45 PM7.16
Oct 14, 3:45 PM8.02
Oct 14, 2:45 PM7.96
Oct 14, 1:45 PM7.55
Oct 14, 12:45 PM6.45
Oct 14, 11:45 AM5.07
Oct 14, 10:45 AM3.50
Oct 14, 9:45 AM2.59
Oct 14, 8:45 AM2.92
Oct 14, 7:45 AM3.81
Oct 14, 6:45 AM4.88
Oct 14, 5:45 AM5.87
Oct 14, 4:45 AM6.63
Oct 14, 3:45 AM6.81
Oct 14, 2:45 AM5.93
Oct 14, 1:45 AM4.74
Oct 14, 12:45 AM2.96
Oct 13, 11:45 PM1.14
Oct 13, 10:45 PM0.26
Oct 13, 9:45 PM0.63
Oct 13, 8:45 PM1.47
Oct 13, 7:45 PM2.50
Oct 13, 6:45 PM3.69
Oct 13, 5:45 PM5.24
Oct 13, 4:45 PM6.59
Oct 13, 3:45 PM8.20
Oct 13, 2:45 PM8.29
Oct 13, 1:45 PM7.98
Oct 13, 12:45 PM7.29
Oct 13, 11:45 AM5.85
Oct 13, 10:45 AM4.11
Oct 13, 9:45 AM2.39
Oct 13, 8:45 AM2.26
Oct 13, 7:45 AM3.15
Oct 13, 6:45 AM4.15
Oct 13, 5:45 AM5.40
Oct 13, 4:45 AM6.59
Oct 13, 3:45 AM7.15
Oct 13, 2:45 AM6.94
Oct 13, 1:45 AM5.98
Oct 13, 12:45 AM4.61
Oct 12, 11:45 PM2.59
Oct 12, 10:45 PM0.87
Oct 12, 9:45 PM0.46
Oct 12, 8:45 PM0.95
Oct 12, 7:45 PM1.88
Oct 12, 6:45 PM3.08
Oct 12, 5:45 PM4.57
Oct 12, 4:45 PM5.97
Oct 12, 3:45 PM7.79
Oct 12, 2:45 PM8.62
Oct 12, 1:45 PM8.31
Oct 12, 12:45 PM8.16
Oct 12, 11:45 AM6.96
Oct 12, 10:45 AM5.26
Oct 12, 9:45 AM3.20
Oct 12, 8:45 AM2.10
Oct 12, 7:45 AM2.69
Oct 12, 6:45 AM3.75
Oct 12, 5:45 AM4.99
Oct 12, 4:45 AM6.23
Oct 12, 3:45 AM7.70
Oct 12, 2:45 AM7.96
Oct 12, 1:45 AM7.54
Oct 12, 12:45 AM6.35
Oct 11, 11:45 PM4.55
Oct 11, 10:45 PM2.40
Oct 11, 9:45 PM0.92
Oct 11, 8:45 PM1.14
Oct 11, 7:45 PM2.07
Oct 11, 6:45 PM3.27
Oct 11, 5:45 PM4.72
Oct 11, 4:45 PM6.27
Oct 11, 3:45 PM8.26
Oct 11, 2:45 PM9.36
Oct 11, 1:45 PM9.32
Oct 11, 12:45 PM8.64
Oct 11, 11:45 AM7.87
Oct 11, 10:45 AM6.24
Oct 11, 9:45 AM4.16
Oct 11, 8:45 AM2.07
Oct 11, 7:45 AM2.09
Oct 11, 6:45 AM3.08
Oct 11, 5:45 AM4.33
Oct 11, 4:45 AM5.81
Oct 11, 3:45 AM7.35
Oct 11, 2:45 AM8.46
Oct 11, 1:45 AM8.34
Oct 11, 12:45 AM7.80
Oct 10, 11:45 PM6.39
Oct 10, 10:45 PM4.37
Oct 10, 9:45 PM2.01
Oct 10, 8:45 PM0.97
Oct 10, 7:45 PM1.63
Oct 10, 6:45 PM2.63
Oct 10, 5:45 PM3.94
Oct 10, 4:45 PM5.42
Oct 10, 3:45 PM6.99
Oct 10, 2:45 PM8.92
Oct 10, 1:45 PM9.45
Oct 10, 12:45 PM8.96
Oct 10, 11:45 AM8.27
Oct 10, 10:45 AM6.97
Oct 10, 9:45 AM5.09
Oct 10, 8:45 AM2.74
Oct 10, 7:45 AM1.54
Oct 10, 6:45 AM2.10
Oct 10, 5:45 AM3.21
Oct 10, 4:45 AM4.57
Oct 10, 3:45 AM6.00
Oct 10, 2:45 AM7.83
Oct 10, 1:45 AM8.52
Oct 10, 12:45 AM8.28
Oct 9, 11:45 PM7.60
Oct 9, 10:45 PM6.15
Oct 9, 9:45 PM4.01
Oct 9, 8:45 PM1.76
Oct 9, 7:45 PM1.11
Oct 9, 6:45 PM1.91
Oct 9, 5:45 PM3.02
Oct 9, 4:45 PM4.32
Oct 9, 3:45 PM5.88
Oct 9, 2:45 PM7.72
Oct 9, 1:45 PM8.97
Oct 9, 12:45 PM8.93
Oct 9, 11:45 AM8.31
Oct 9, 10:45 AM7.42
Oct 9, 9:45 AM5.60
Oct 9, 8:45 AM3.27
Oct 9, 7:45 AM1.31
Oct 9, 6:45 AM1.27
Oct 9, 5:45 AM2.15
Oct 9, 4:45 AM3.39
Oct 9, 3:45 AM4.81
Oct 9, 2:45 AM6.23
Oct 9, 1:45 AM8.09
Oct 9, 12:45 AM8.47
Oct 8, 11:45 PM8.16
Oct 8, 10:45 PM7.46
Oct 8, 9:45 PM5.95
Water level, 30 days at Alviso Slough: the water from 0.00 to 9.45 feet of stage, the latest 2.38 feet.WATER LEVEL, 30 DAYSFTHIGH 9.45 FT, OCT 10, 1:45 PM · LOW 0.00 FT, SEP 28, 10:00 PM03581013Sep 16Sep 21Sep 26Oct 1Oct 6Oct 112.38
Latest
2.38 ftOct 15, 9:00 PM
Highest
9.45 ftOct 10, 1:45 PM
Lowest
0.00 ftSep 28, 10:00 PM
Range
9.45 fthighest less lowest
Change
Rose 0.26 ftsince Sep 15, 9:30 PM
Readings
2,837
The readings these charts were drawn from, as a table
DayHigh ftLow ftAverage ftLast ftReadings
Oct 157.690.845.032.3885
Oct 148.070.374.590.5996
Oct 138.320.264.681.1496
Oct 128.620.465.002.5994
Oct 119.410.875.404.5595
Oct 109.450.975.316.3996
Oct 99.061.055.117.6095
Oct 88.480.494.738.1695
Oct 78.310.234.568.3193
Oct 68.290.024.407.9195
Oct 58.000.414.495.6596
Oct 47.990.404.624.1195
Oct 38.080.344.702.5595
Oct 28.110.294.711.3195
Oct 18.530.324.790.5396
Sep 308.780.214.790.2294
Sep 298.700.064.540.9496
Sep 288.430.004.402.4396
Sep 278.410.344.404.4096
Sep 268.150.404.305.9795
Sep 257.830.354.297.1596
Sep 247.680.324.257.6896
Sep 237.660.084.107.6596
Sep 227.520.174.216.9993
Sep 217.150.594.185.5895
Sep 207.020.964.334.6294
Sep 197.270.964.147.2777
Sep 187.140.994.462.3796
Sep 177.250.984.441.4795
Sep 167.840.864.501.0095
Sep 152.120.791.270.7910

How it reports

Rank
1,888of 4,465 in California, Oct 16
Schedule
every 15 minon the hour's :00, :15, :30 and :45
Reports received, 24 hours
93 of 9696.8% of its schedule
Reports received, 7 days
664 of 67298.8% of its schedule
Longest silence, 7 days
30 minfrom Oct 9, 1:30 PM
Latest report
Oct 15, 9:00 PMlocal time
Time to reach Storm Station
25 min9 in 10 within 30 min

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

Its schedule is one report every 15 min, 96 in 24 hours. Two reports in the same 15 min count as one received.

Ranking Statistics

247 score92.8of 100

California median
91.6the median score of 4,465 stations
Scoring higher
1,884stations in California
Sharing its score
108ranks 1,885 to 1,992
Points deducted
7.23.0 arrival, 2.9 accuracy, 0.8 forecast check, 0.5 reports received
Counted at the median
Accuracy, instrument checks, forecast checknot measured at this station; California median 85.6, 100.0, 92.4
Next above
341545117124001rank 1,885; ahead on reports received 100% against 98.5%
Next below
ANDC1rank 1,903; behind on reports received 98.5% against 98.3%
Sharing its rank
14other stations, equal on every measure

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 3598.534.5 of 35 pointsCalifornia median 98.5662 of 672 scheduled reports received in 7 days
  2. Arrivalweight 1070.17.0 of 10 pointsCalifornia median 81.2half its reports arrived within 25 min
  3. Continuityweight 10100.010.0 of 10 pointsCalifornia median 100.0longest silence 45 min, on a schedule of one report every 15 min
  4. Accuracyweight 20-17.1 of 20 points, at the medianCalifornia median 85.6-
  5. Instrument checksweight 15-15.0 of 15 points, at the medianCalifornia median 100.0-
  6. Forecast checkweight 10-9.2 of 10 points, at the medianCalifornia median 92.4-

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 (45 min), none for 72 (18 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 Alviso Slough

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.