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Live/Water/California/New Chicago Marsh at Alviso

New Chicago Marsh at Alviso

A water gauge in Santa Clara County, California. Its stage was 9.52 ft as of Oct 15, 8:15 PM PDT.

Gauge NCAC1Santa Clara County, CaliforniaEvery gauge in California

Stage now
9.52 ftreported Oct 15, 8:15 PM PDT
24 hour change
No changesince Oct 14, 8:15 PM
Rank
950of 4,465 in California, Oct 16
Elevation
13 ftabove sea level
County
Santa Clara County
Position
37.4298° N, 121.9783° W
Record since
2026

Water level

New Chicago Marsh at Alviso

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.

Left out: 2 readings the gauge sent that were not the water, the furthest 54.91 ft on Oct 15. A reading is left out when it leaps away from the water and straight back, sticks on one value, or swings with a gauge in ice or failing.

Water level, 24 hours at New Chicago Marsh at Alviso: the water from 9.51 to 10.02 feet of stage, the latest 9.52 feet.WATER LEVEL, 24 HOURSFTHIGH 10.02 FT, OCT 15, 1:15 AM · LOW 9.51 FT, OCT 14, 9:15 PM9.49.69.810.010.29 PMOct 153 AM6 AM9 AM12 PM3 PM6 PM9.52
Latest
9.52 ftOct 15, 8:15 PM
Highest
10.02 ftOct 15, 1:15 AM
Lowest
9.51 ftOct 14, 9:15 PM
Range
0.51 fthighest less lowest
Change
No changesince Oct 14, 8:45 PM
Readings
90
Left out
2not the water
The readings these charts were drawn from, as a table
TimeStage ft
Oct 15, 8:15 PM9.52
Oct 15, 8:00 PM9.51
Oct 15, 7:45 PM9.51
Oct 15, 7:30 PM9.51
Oct 15, 7:15 PM9.52
Oct 15, 7:00 PM9.70
Oct 15, 6:45 PM9.75
Oct 15, 6:30 PM9.71
Oct 15, 6:15 PM9.51
Oct 15, 6:00 PM9.57
Oct 15, 5:45 PM9.52
Oct 15, 5:30 PM9.52
Oct 15, 5:15 PM9.52
Oct 15, 5:00 PM9.52
Oct 15, 4:45 PM9.52
Oct 15, 4:30 PM9.53
Oct 15, 4:15 PM9.53
Oct 15, 4:00 PM9.52
Oct 15, 3:45 PM9.52
Oct 15, 3:15 PM9.53
Oct 15, 3:00 PM9.53
Oct 15, 2:45 PM9.53
Oct 15, 2:30 PM9.53
Oct 15, 2:15 PM9.53
Oct 15, 1:45 PM9.53
Oct 15, 1:30 PM9.53
Oct 15, 1:15 PM9.53
Oct 15, 1:00 PM9.53
Oct 15, 12:45 PM9.53
Oct 15, 12:30 PM9.53
Oct 15, 12:15 PM9.53
Oct 15, 12:00 PM9.53
Oct 15, 11:45 AM9.53
Oct 15, 11:30 AM9.53
Oct 15, 11:15 AM9.53
Oct 15, 11:00 AM9.53
Oct 15, 10:45 AM9.53
Oct 15, 10:30 AM9.53
Oct 15, 10:15 AM9.53
Oct 15, 9:45 AM9.53
Oct 15, 9:30 AM9.53
Oct 15, 9:15 AM9.53
Oct 15, 9:00 AM9.52
Oct 15, 8:45 AM9.52
Oct 15, 8:30 AM9.52
Oct 15, 8:15 AM9.52
Oct 15, 8:00 AM9.52
Oct 15, 7:45 AM9.52
Oct 15, 7:30 AM9.52
Oct 15, 7:15 AM9.52
Oct 15, 7:00 AM9.52
Oct 15, 6:45 AM9.52
Oct 15, 6:30 AM9.52
Oct 15, 6:15 AM9.52
Oct 15, 6:00 AM9.52
Oct 15, 5:45 AM9.52
Oct 15, 5:30 AM9.52
Oct 15, 5:15 AM9.52
Oct 15, 5:00 AM9.52
Oct 15, 4:45 AM9.52
Oct 15, 4:30 AM9.52
Oct 15, 4:15 AM9.52
Oct 15, 4:00 AM9.52
Oct 15, 3:45 AM9.52
Oct 15, 3:30 AM9.52
Oct 15, 3:15 AM9.52
Oct 15, 3:00 AM9.52
Oct 15, 2:45 AM9.53
Oct 15, 2:30 AM9.59
Oct 15, 2:00 AM9.69
Oct 15, 1:45 AM9.92
Oct 15, 1:15 AM10.02
Oct 15, 1:00 AM9.63
Oct 15, 12:45 AM9.57
Oct 15, 12:30 AM9.53
Oct 15, 12:15 AM9.52
Oct 15, 12:00 AM9.52
Oct 14, 11:45 PM9.52
Oct 14, 11:30 PM9.55
Oct 14, 11:15 PM9.52
Oct 14, 11:00 PM9.51
Oct 14, 10:45 PM9.51
Oct 14, 10:30 PM9.51
Oct 14, 10:15 PM9.51
Oct 14, 10:00 PM9.51
Oct 14, 9:45 PM9.51
Oct 14, 9:30 PM9.51
Oct 14, 9:15 PM9.51
Oct 14, 9:00 PM9.52
Oct 14, 8:45 PM9.52

Left out: 2 readings the gauge sent that were not the water, the furthest 54.91 ft on Oct 15. A reading is left out when it leaps away from the water and straight back, sticks on one value, or swings with a gauge in ice or failing.

Water level, 7 days at New Chicago Marsh at Alviso: the water from 9.51 to 10.02 feet of stage, the latest 9.52 feet.WATER LEVEL, 7 DAYSFTHIGH 10.02 FT, OCT 15, 1:15 AM · LOW 9.51 FT, OCT 14, 6:30 PM9.49.69.810.010.2Fri 9Sat 10Sun 11Mon 12Tue 13Wed 14Thu 159.52
Latest
9.52 ftOct 15, 8:15 PM
Highest
10.02 ftOct 15, 1:15 AM
Lowest
9.51 ftOct 14, 6:30 PM
Range
0.51 fthighest less lowest
Change
Fell 0.06 ftsince Oct 8, 8:45 PM
Readings
661
Left out
2not the water
The readings these charts were drawn from, as a table
TimeStage ft
Oct 15, 8:15 PM9.52
Oct 15, 7:45 PM9.51
Oct 15, 6:45 PM9.75
Oct 15, 5:45 PM9.52
Oct 15, 4:45 PM9.52
Oct 15, 3:45 PM9.52
Oct 15, 2:45 PM9.53
Oct 15, 1:45 PM9.53
Oct 15, 12:45 PM9.53
Oct 15, 11:45 AM9.53
Oct 15, 10:45 AM9.53
Oct 15, 9:45 AM9.53
Oct 15, 8:45 AM9.52
Oct 15, 7:45 AM9.52
Oct 15, 6:45 AM9.52
Oct 15, 5:45 AM9.52
Oct 15, 4:45 AM9.52
Oct 15, 3:45 AM9.52
Oct 15, 2:45 AM9.53
Oct 15, 1:45 AM9.92
Oct 15, 12:45 AM9.57
Oct 14, 11:45 PM9.52
Oct 14, 10:45 PM9.51
Oct 14, 9:45 PM9.51
Oct 14, 8:45 PM9.52
Oct 14, 7:45 PM9.51
Oct 14, 6:45 PM9.51
Oct 14, 5:45 PM9.53
Oct 14, 4:45 PM9.54
Oct 14, 3:45 PM9.53
Oct 14, 2:45 PM9.54
Oct 14, 1:45 PM9.54
Oct 14, 12:45 PM9.54
Oct 14, 11:45 AM9.54
Oct 14, 10:45 AM9.54
Oct 14, 9:45 AM9.54
Oct 14, 8:45 AM9.53
Oct 14, 7:45 AM9.53
Oct 14, 6:45 AM9.53
Oct 14, 5:45 AM9.53
Oct 14, 4:45 AM9.53
Oct 14, 3:45 AM9.53
Oct 14, 2:45 AM9.53
Oct 14, 1:45 AM9.53
Oct 14, 12:45 AM9.52
Oct 13, 11:45 PM9.53
Oct 13, 10:45 PM9.52
Oct 13, 9:45 PM9.52
Oct 13, 8:45 PM9.53
Oct 13, 7:45 PM9.53
Oct 13, 6:45 PM9.55
Oct 13, 5:45 PM9.53
Oct 13, 4:45 PM9.54
Oct 13, 3:45 PM9.54
Oct 13, 2:45 PM9.54
Oct 13, 1:45 PM9.54
Oct 13, 12:45 PM9.54
Oct 13, 11:45 AM9.55
Oct 13, 10:45 AM9.56
Oct 13, 9:45 AM9.55
Oct 13, 8:45 AM9.54
Oct 13, 7:45 AM9.54
Oct 13, 6:45 AM9.54
Oct 13, 5:45 AM9.54
Oct 13, 4:45 AM9.54
Oct 13, 3:45 AM9.55
Oct 13, 2:45 AM9.54
Oct 13, 1:45 AM9.54
Oct 13, 12:45 AM9.54
Oct 12, 11:45 PM9.54
Oct 12, 10:45 PM9.54
Oct 12, 9:45 PM9.54
Oct 12, 8:45 PM9.54
Oct 12, 7:45 PM9.53
Oct 12, 6:45 PM9.55
Oct 12, 5:45 PM9.57
Oct 12, 4:45 PM9.56
Oct 12, 3:45 PM9.57
Oct 12, 2:45 PM9.57
Oct 12, 1:45 PM9.56
Oct 12, 12:45 PM9.56
Oct 12, 11:45 AM9.56
Oct 12, 10:45 AM9.56
Oct 12, 9:45 AM9.56
Oct 12, 8:45 AM9.55
Oct 12, 7:45 AM9.55
Oct 12, 6:45 AM9.55
Oct 12, 5:45 AM9.55
Oct 12, 4:45 AM9.55
Oct 12, 3:45 AM9.55
Oct 12, 2:45 AM9.54
Oct 12, 1:45 AM9.54
Oct 12, 12:45 AM9.54
Oct 11, 11:45 PM9.54
Oct 11, 10:45 PM9.55
Oct 11, 9:45 PM9.54
Oct 11, 8:45 PM9.54
Oct 11, 7:45 PM9.56
Oct 11, 6:45 PM9.55
Oct 11, 5:45 PM9.58
Oct 11, 4:45 PM9.60
Oct 11, 3:45 PM9.61
Oct 11, 2:45 PM9.61
Oct 11, 1:45 PM9.60
Oct 11, 12:45 PM9.58
Oct 11, 11:45 AM9.58
Oct 11, 10:45 AM9.57
Oct 11, 9:45 AM9.56
Oct 11, 8:45 AM9.56
Oct 11, 7:45 AM9.56
Oct 11, 6:45 AM9.56
Oct 11, 5:45 AM9.56
Oct 11, 4:45 AM9.56
Oct 11, 3:45 AM9.56
Oct 11, 2:45 AM9.56
Oct 11, 1:45 AM9.55
Oct 11, 12:45 AM9.55
Oct 10, 11:45 PM9.55
Oct 10, 10:45 PM9.55
Oct 10, 9:45 PM9.55
Oct 10, 8:45 PM9.55
Oct 10, 7:45 PM9.58
Oct 10, 6:45 PM9.59
Oct 10, 5:45 PM9.59
Oct 10, 4:45 PM9.59
Oct 10, 3:45 PM9.60
Oct 10, 2:45 PM9.61
Oct 10, 1:45 PM9.62
Oct 10, 12:45 PM9.60
Oct 10, 11:45 AM9.59
Oct 10, 10:45 AM9.59
Oct 10, 9:45 AM9.59
Oct 10, 8:45 AM9.58
Oct 10, 7:45 AM9.58
Oct 10, 6:45 AM9.58
Oct 10, 5:45 AM9.58
Oct 10, 4:45 AM9.56
Oct 10, 3:45 AM9.56
Oct 10, 2:45 AM9.56
Oct 10, 1:45 AM9.56
Oct 10, 12:45 AM9.56
Oct 9, 11:45 PM9.56
Oct 9, 10:45 PM9.57
Oct 9, 9:45 PM9.57
Oct 9, 8:45 PM9.58
Oct 9, 7:45 PM9.58
Oct 9, 6:45 PM9.59
Oct 9, 5:45 PM9.59
Oct 9, 4:45 PM9.59
Oct 9, 3:45 PM9.59
Oct 9, 2:45 PM9.61
Oct 9, 1:45 PM9.59
Oct 9, 12:45 PM9.60
Oct 9, 11:45 AM9.59
Oct 9, 10:45 AM9.60
Oct 9, 9:45 AM9.59
Oct 9, 8:45 AM9.59
Oct 9, 7:45 AM9.59
Oct 9, 6:45 AM9.59
Oct 9, 5:45 AM9.59
Oct 9, 4:45 AM9.58
Oct 9, 3:45 AM9.58
Oct 9, 2:45 AM9.59
Oct 9, 1:45 AM9.59
Oct 9, 12:45 AM9.58
Oct 8, 11:45 PM9.58
Oct 8, 10:45 PM9.58
Oct 8, 9:45 PM9.58
Oct 8, 8:45 PM9.58

Left out: 2 readings the gauge sent that were not the water, the furthest 54.91 ft on Oct 15. A reading is left out when it leaps away from the water and straight back, sticks on one value, or swings with a gauge in ice or failing.

Water level, 30 days at New Chicago Marsh at Alviso: the water from 9.51 to 10.57 feet of stage, the latest 9.52 feet.WATER LEVEL, 30 DAYSFTHIGH 10.57 FT, SEP 28, 1:30 PM · LOW 9.51 FT, OCT 14, 6:30 PM9.510.010.511.0Sep 16Sep 21Sep 26Oct 1Oct 6Oct 119.52
Latest
9.52 ftOct 15, 8:15 PM
Highest
10.57 ftSep 28, 1:30 PM
Lowest
9.51 ftOct 14, 6:30 PM
Range
1.06 fthighest less lowest
Change
Fell 0.14 ftsince Sep 15, 8:45 PM
Readings
2,801
Left out
2not the water
The readings these charts were drawn from, as a table
DayHigh ftLow ftAverage ftLast ftReadings
Oct 1510.029.519.559.5277
Oct 149.559.519.539.5295
Oct 139.569.529.549.5394
Oct 129.579.539.559.5495
Oct 119.619.549.579.5496
Oct 109.629.559.589.5596
Oct 99.619.569.599.5695
Oct 89.609.579.599.5896
Oct 79.619.579.609.5993
Oct 69.629.599.619.6096
Oct 59.649.609.629.6196
Oct 49.659.609.639.6296
Oct 39.659.629.649.6395
Oct 29.669.629.649.6494
Oct 19.679.629.659.6396
Sep 309.829.629.669.6693
Sep 299.699.639.679.6595
Sep 2810.579.659.709.6594
Sep 279.899.669.699.6695
Sep 269.719.679.699.6891
Sep 259.759.669.709.6793
Sep 249.769.669.709.6993
Sep 239.739.689.709.7093
Sep 229.739.679.709.6991
Sep 219.749.679.709.6892
Sep 209.719.669.699.6992
Sep 199.719.669.689.6778
Sep 189.749.659.689.6794
Sep 179.709.649.679.6792
Sep 169.749.629.679.6592
Sep 159.669.639.649.6313

How it reports

Rank
950of 4,465 in California, Oct 16
Schedule
every 15 minon the hour's :00, :15, :30 and :45
Reports received, 24 hours
91 of 9694.7% of its schedule
Reports received, 7 days
659 of 67298.0% of its schedule
Longest silence, 7 days
30 minfrom Oct 9, 11:30 AM
Latest report
Oct 15, 8:15 PMlocal time
Time to reach Storm Station
15 min9 in 10 within 20 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 score94.6of 100

California median
91.6the median score of 4,465 stations
Scoring higher
920stations in California
Sharing its score
59ranks 921 to 979
Points deducted
5.42.9 accuracy, 1.0 arrival, 0.8 reports received, 0.8 forecast check
Counted at the median
Accuracy, instrument checks, forecast checknot measured at this station; California median 85.6, 100.0, 92.4
Next above
BFCC1rank 949; ahead on reports received 98.5% against 97.7%
Next below
ABRC1rank 953; behind on reports received 97.7% against 97.6%
Sharing its rank
2other 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 3597.834.2 of 35 pointsCalifornia median 98.5657 of 672 scheduled reports received in 7 days
  2. Arrivalweight 1090.19.0 of 10 pointsCalifornia median 81.2half its reports arrived within 15 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 New Chicago Marsh at Alviso

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.