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Live/Water/California/Delta at Mallard Island

Delta at Mallard Island

A water gauge in Contra Costa County, California. Its stage was 2.39 ft as of Oct 16, 12:30 AM PDT.

Gauge MLIC1Contra Costa County, CaliforniaEvery gauge in California

Stage now
2.39 ftreported Oct 16, 12:30 AM PDT
24 hour change
Rose 0.17 ftsince Oct 15, 12:30 AM
Rank
2,497of 4,465 in California, Oct 16
Elevation
4 ftabove sea level
County
Contra Costa County
Position
38.0500° N, 121.8500° W
Record since
2012

Water level

Delta at Mallard Island

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 Delta at Mallard Island: the water from 2.16 to 6.45 feet of stage, the latest 2.39 feet.WATER LEVEL, 24 HOURSFTHIGH 6.45 FT, OCT 15, 5:15 PM · LOW 2.16 FT, OCT 15, 1:15 AM24683 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 162.39
Latest
2.39 ftOct 16, 12:30 AM
Highest
6.45 ftOct 15, 5:15 PM
Lowest
2.16 ftOct 15, 1:15 AM
Range
4.29 fthighest less lowest
Change
Rose 0.23 ftsince Oct 15, 1:15 AM
Readings
94
The readings these charts were drawn from, as a table
TimeStage ft
Oct 16, 12:30 AM2.39
Oct 16, 12:15 AM2.46
Oct 16, 12:00 AM2.54
Oct 15, 11:45 PM2.72
Oct 15, 11:30 PM2.89
Oct 15, 11:15 PM3.02
Oct 15, 11:00 PM3.12
Oct 15, 10:45 PM3.24
Oct 15, 10:30 PM3.36
Oct 15, 10:15 PM3.54
Oct 15, 10:00 PM3.72
Oct 15, 9:45 PM3.87
Oct 15, 9:30 PM4.06
Oct 15, 9:15 PM4.22
Oct 15, 9:00 PM4.38
Oct 15, 8:45 PM4.56
Oct 15, 8:30 PM4.77
Oct 15, 8:15 PM4.99
Oct 15, 8:00 PM5.19
Oct 15, 7:45 PM5.39
Oct 15, 7:30 PM5.57
Oct 15, 7:15 PM5.76
Oct 15, 7:00 PM5.93
Oct 15, 6:45 PM6.07
Oct 15, 6:30 PM6.20
Oct 15, 6:15 PM6.31
Oct 15, 6:00 PM6.38
Oct 15, 5:45 PM6.43
Oct 15, 5:30 PM6.45
Oct 15, 5:15 PM6.45
Oct 15, 5:00 PM6.42
Oct 15, 4:45 PM6.39
Oct 15, 4:30 PM6.36
Oct 15, 4:15 PM6.30
Oct 15, 4:00 PM6.21
Oct 15, 3:45 PM6.14
Oct 15, 3:30 PM6.04
Oct 15, 3:15 PM5.94
Oct 15, 3:00 PM5.84
Oct 15, 2:45 PM5.72
Oct 15, 2:30 PM5.60
Oct 15, 2:15 PM5.46
Oct 15, 2:00 PM5.31
Oct 15, 1:45 PM5.17
Oct 15, 1:30 PM5.02
Oct 15, 1:15 PM4.88
Oct 15, 1:00 PM4.75
Oct 15, 12:45 PM4.63
Oct 15, 12:30 PM4.53
Oct 15, 12:15 PM4.43
Oct 15, 12:00 PM4.36
Oct 15, 11:45 AM4.31
Oct 15, 11:30 AM4.28
Oct 15, 11:15 AM4.30
Oct 15, 11:00 AM4.32
Oct 15, 10:45 AM4.37
Oct 15, 10:30 AM4.42
Oct 15, 10:15 AM4.49
Oct 15, 10:00 AM4.58
Oct 15, 9:45 AM4.69
Oct 15, 9:30 AM4.81
Oct 15, 9:15 AM4.92
Oct 15, 9:00 AM5.02
Oct 15, 8:45 AM5.11
Oct 15, 8:30 AM5.20
Oct 15, 8:15 AM5.25
Oct 15, 8:00 AM5.30
Oct 15, 7:45 AM5.33
Oct 15, 7:30 AM5.35
Oct 15, 7:15 AM5.35
Oct 15, 7:00 AM5.35
Oct 15, 6:45 AM5.33
Oct 15, 6:30 AM5.30
Oct 15, 6:15 AM5.25
Oct 15, 6:00 AM5.20
Oct 15, 5:45 AM5.13
Oct 15, 5:30 AM5.05
Oct 15, 5:15 AM4.97
Oct 15, 5:00 AM4.87
Oct 15, 4:45 AM4.77
Oct 15, 4:30 AM4.65
Oct 15, 4:15 AM4.48
Oct 15, 4:00 AM4.29
Oct 15, 3:45 AM4.07
Oct 15, 3:30 AM3.85
Oct 15, 3:15 AM3.62
Oct 15, 3:00 AM3.37
Oct 15, 2:45 AM3.09
Oct 15, 2:30 AM2.86
Oct 15, 2:15 AM2.61
Oct 15, 2:00 AM2.46
Oct 15, 1:45 AM2.29
Oct 15, 1:30 AM2.18
Oct 15, 1:15 AM2.16
Water level, 7 days at Delta at Mallard Island: the water from 2.10 to 7.24 feet of stage, the latest 2.39 feet.WATER LEVEL, 7 DAYSFTHIGH 7.24 FT, OCT 11, 3:15 PM · LOW 2.10 FT, OCT 15, 1:00 AM2468Sat 10Sun 11Mon 12Tue 13Wed 14Thu 15Fri 162.39
Latest
2.39 ftOct 16, 12:30 AM
Highest
7.24 ftOct 11, 3:15 PM
Lowest
2.10 ftOct 15, 1:00 AM
Range
5.14 fthighest less lowest
Change
Fell 4.07 ftsince Oct 9, 1:15 AM
Readings
670
The readings these charts were drawn from, as a table
TimeStage ft
Oct 16, 12:30 AM2.39
Oct 15, 11:45 PM2.72
Oct 15, 10:45 PM3.24
Oct 15, 9:45 PM3.87
Oct 15, 8:45 PM4.56
Oct 15, 7:45 PM5.39
Oct 15, 6:45 PM6.07
Oct 15, 5:45 PM6.43
Oct 15, 4:45 PM6.39
Oct 15, 3:45 PM6.14
Oct 15, 2:45 PM5.72
Oct 15, 1:45 PM5.17
Oct 15, 12:45 PM4.63
Oct 15, 11:45 AM4.31
Oct 15, 10:45 AM4.37
Oct 15, 9:45 AM4.69
Oct 15, 8:45 AM5.11
Oct 15, 7:45 AM5.33
Oct 15, 6:45 AM5.33
Oct 15, 5:45 AM5.13
Oct 15, 4:45 AM4.77
Oct 15, 3:45 AM4.07
Oct 15, 2:45 AM3.09
Oct 15, 1:45 AM2.29
Oct 15, 12:45 AM2.19
Oct 14, 11:45 PM2.48
Oct 14, 10:45 PM2.96
Oct 14, 9:45 PM3.52
Oct 14, 8:45 PM4.13
Oct 14, 7:45 PM4.90
Oct 14, 6:45 PM5.81
Oct 14, 5:45 PM6.46
Oct 14, 4:45 PM6.61
Oct 14, 3:45 PM6.45
Oct 14, 2:45 PM6.10
Oct 14, 1:45 PM5.54
Oct 14, 12:45 PM4.79
Oct 14, 11:45 AM4.23
Oct 14, 10:45 AM3.99
Oct 14, 9:45 AM4.17
Oct 14, 8:45 AM4.64
Oct 14, 7:45 AM5.17
Oct 14, 6:45 AM5.45
Oct 14, 5:45 AM5.44
Oct 14, 4:45 AM5.23
Oct 14, 3:45 AM4.77
Oct 14, 2:45 AM3.96
Oct 14, 1:45 AM2.90
Oct 14, 12:45 AM2.18
Oct 13, 11:45 PM2.25
Oct 13, 10:45 PM2.61
Oct 13, 9:45 PM3.13
Oct 13, 8:45 PM3.72
Oct 13, 7:45 PM4.43
Oct 13, 6:45 PM5.29
Oct 13, 5:45 PM6.18
Oct 13, 4:45 PM6.64
Oct 13, 3:45 PM6.67
Oct 13, 2:45 PM6.36
Oct 13, 1:45 PM5.87
Oct 13, 12:45 PM5.12
Oct 13, 11:45 AM4.35
Oct 13, 10:45 AM3.84
Oct 13, 9:45 AM3.81
Oct 13, 8:45 AM4.17
Oct 13, 7:45 AM4.84
Oct 13, 6:45 AM5.44
Oct 13, 5:45 AM5.73
Oct 13, 4:45 AM5.72
Oct 13, 3:45 AM5.47
Oct 13, 2:45 AM4.92
Oct 13, 1:45 AM3.92
Oct 13, 12:45 AM2.84
Oct 12, 11:45 PM2.42
Oct 12, 10:45 PM2.64
Oct 12, 9:45 PM3.08
Oct 12, 8:45 PM3.62
Oct 12, 7:45 PM4.23
Oct 12, 6:45 PM5.00
Oct 12, 5:45 PM6.01
Oct 12, 4:45 PM6.71
Oct 12, 3:45 PM6.90
Oct 12, 2:45 PM6.71
Oct 12, 1:45 PM6.32
Oct 12, 12:45 PM5.65
Oct 12, 11:45 AM4.67
Oct 12, 10:45 AM3.88
Oct 12, 9:45 AM3.60
Oct 12, 8:45 AM3.93
Oct 12, 7:45 AM4.45
Oct 12, 6:45 AM5.22
Oct 12, 5:45 AM5.89
Oct 12, 4:45 AM6.15
Oct 12, 3:45 AM6.10
Oct 12, 2:45 AM5.83
Oct 12, 1:45 AM5.16
Oct 12, 12:45 AM4.08
Oct 11, 11:45 PM3.06
Oct 11, 10:45 PM2.86
Oct 11, 9:45 PM3.24
Oct 11, 8:45 PM3.57
Oct 11, 7:45 PM4.17
Oct 11, 6:45 PM4.96
Oct 11, 5:45 PM5.92
Oct 11, 4:45 PM6.86
Oct 11, 3:45 PM7.23
Oct 11, 2:45 PM7.17
Oct 11, 1:45 PM6.84
Oct 11, 12:45 PM6.27
Oct 11, 11:45 AM5.34
Oct 11, 10:45 AM4.26
Oct 11, 9:45 AM3.66
Oct 11, 8:45 AM3.72
Oct 11, 7:45 AM4.12
Oct 11, 6:45 AM4.80
Oct 11, 5:45 AM5.67
Oct 11, 4:45 AM6.34
Oct 11, 3:45 AM6.51
Oct 11, 2:45 AM6.41
Oct 11, 1:45 AM6.05
Oct 11, 12:45 AM5.28
Oct 10, 11:45 PM4.12
Oct 10, 10:45 PM3.01
Oct 10, 9:45 PM3.00
Oct 10, 8:45 PM3.44
Oct 10, 7:45 PM3.93
Oct 10, 6:45 PM4.46
Oct 10, 5:45 PM5.27
Oct 10, 4:45 PM6.32
Oct 10, 3:45 PM7.04
Oct 10, 2:45 PM7.15
Oct 10, 1:45 PM6.95
Oct 10, 12:45 PM6.52
Oct 10, 11:45 AM5.79
Oct 10, 10:45 AM4.67
Oct 10, 9:45 AM3.70
Oct 10, 8:45 AM3.61
Oct 10, 7:45 AM3.88
Oct 10, 6:45 AM4.35
Oct 10, 5:45 AM5.09
Oct 10, 4:45 AM6.01
Oct 10, 3:45 AM6.57
Oct 10, 2:45 AM6.71
Oct 10, 1:45 AM6.54
Oct 10, 12:45 AM6.14
Oct 9, 11:45 PM5.35
Oct 9, 10:45 PM4.01
Oct 9, 9:45 PM3.30
Oct 9, 8:45 PM3.29
Oct 9, 7:45 PM3.48
Oct 9, 6:45 PM4.01
Oct 9, 5:45 PM4.78
Oct 9, 4:45 PM5.74
Oct 9, 3:45 PM6.64
Oct 9, 2:45 PM6.91
Oct 9, 1:45 PM6.80
Oct 9, 12:45 PM6.45
Oct 9, 11:45 AM5.90
Oct 9, 10:45 AM4.93
Oct 9, 9:45 AM3.66
Oct 9, 8:45 AM3.17
Oct 9, 7:45 AM3.19
Oct 9, 6:45 AM3.63
Oct 9, 5:45 AM4.15
Oct 9, 4:45 AM4.99
Oct 9, 3:45 AM5.95
Oct 9, 2:45 AM6.49
Oct 9, 1:45 AM6.54
Water level, 30 days at Delta at Mallard Island: the water from 1.91 to 7.24 feet of stage, the latest 2.39 feet.WATER LEVEL, 30 DAYSFTHIGH 7.24 FT, OCT 11, 3:15 PM · LOW 1.91 FT, OCT 5, 5:30 AM02468Sep 16Sep 21Sep 26Oct 1Oct 6Oct 112.39
Latest
2.39 ftOct 16, 12:30 AM
Highest
7.24 ftOct 11, 3:15 PM
Lowest
1.91 ftOct 5, 5:30 AM
Range
5.33 fthighest less lowest
Change
Fell 0.23 ftsince Sep 16, 1:15 AM
Readings
2,874
The readings these charts were drawn from, as a table
DayHigh ftLow ftAverage ftLast ftReadings
Oct 162.542.392.462.393
Oct 156.452.104.622.7296
Oct 146.612.124.662.4896
Oct 136.692.254.722.2596
Oct 126.902.424.942.4296
Oct 117.242.835.203.0696
Oct 107.152.835.194.1296
Oct 96.913.005.005.3596
Oct 86.602.704.715.7995
Oct 76.722.394.716.3193
Oct 66.682.254.626.6896
Oct 56.721.914.556.6396
Oct 46.682.004.625.7596
Oct 36.822.134.814.6796
Oct 26.942.014.873.9596
Oct 17.072.084.913.2596
Sep 307.002.164.802.7196
Sep 296.902.184.652.1896
Sep 286.632.194.522.1996
Sep 276.492.294.472.7996
Sep 266.242.364.343.8496
Sep 256.252.234.344.9296
Sep 246.292.114.325.6496
Sep 236.462.234.405.9896
Sep 226.412.254.536.4196
Sep 216.422.104.546.4296
Sep 206.192.334.565.9196
Sep 196.342.314.635.2996
Sep 186.282.214.574.5196
Sep 176.322.524.663.7596
Sep 166.562.534.883.3391

How it reports

Rank
2,497of 4,465 in California, Oct 16
Schedule
every 15 minon the hour's :00, :15, :30 and :45
Reports received, 24 hours
90 of 9693.7% of its schedule
Reports received, 7 days
656 of 67297.6% of its schedule
Longest silence, 7 days
41 minfrom Oct 16, 12:30 AM
Latest report
Oct 16, 12:30 AMlocal time
Time to reach Storm Station
24 min9 in 10 within 29 min
Against its reference, 30 days
+0.4 °Fwarmer than the airport station KCCR, 12 miles away, on average over 1,269 readings; typical difference 5.0 °F; also compared with 1 other reference station

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

Against its reference: each temperature this station reports is compared with the nearest airport or climate reference station that reported within half an hour, up to 15 miles away. The figure is its reading less the reference's, on average, as both were reported; the typical difference is the root mean square. The difference in height is shown where both heights are known.

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 score89.7of 100

California median
91.6the median score of 4,465 stations
Scoring higher
2,496stations in California
Sharing its score
3ranks 2,497 to 2,499
Points deducted
10.34.7 accuracy, 2.9 arrival, 1.1 reports received, 0.9 continuity, 0.8 forecast check
Counted at the median
Forecast checknot measured at this station; California median 92.4
Next above
PVBC1rank 2,492; ahead on 247 score 89.8 against 89.7
Next below
CD020rank 2,498; behind on reports received 96.8% against 87.1%

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 3596.933.9 of 35 pointsCalifornia median 98.5651 of 672 scheduled reports received in 7 days
  2. Arrivalweight 1071.27.1 of 10 pointsCalifornia median 81.2half its reports arrived within 24 min
  3. Continuityweight 1090.99.1 of 10 pointsCalifornia median 100.0longest silence 60 min, on a schedule of one report every 15 min
  4. Accuracyweight 2076.515.3 of 20 pointsCalifornia median 85.6its temperature against the airport station KCCR, 11.7 miles away, over 484 readings: typical difference 4.2 °F beyond a steady offset of +1.2 °F
  5. Instrument checksweight 15100.015.0 of 15 pointsCalifornia median 100.00 of 484 readings failed their check against its reference station
  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 2.7 °F of its reference, typically, none beyond 9.2 °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 Delta at Mallard Island

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.