Live/Water/California/Ca DWR Streamflow Gage at Rock Slough above Contra Costa Canal
Ca DWR Streamflow Gage at Rock Slough above Contra Costa Canal
A water gauge in Contra Costa County, California. Its stage was 6.49 ft as of Oct 15, 8:15 PM PDT.
- Stage now
- 6.49 ftreported Oct 15, 8:15 PM PDT
- 24 hour change
- Fell 0.08 ftsince Oct 14, 8:30 PM
- Elevation
- 3 ftabove sea level
- County
- Contra Costa County
- Position
- 37.9760° N, 121.6350° W
- Record since
- 2014
Water level
Ca DWR Streamflow Gage at Rock Slough above Contra Costa Canal
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.
- Latest
- 6.49 ftOct 15, 8:15 PM
- Highest
- 6.51 ftOct 14, 8:45 PM
- Lowest
- 2.87 ftOct 15, 4:30 AM
- Range
- 3.64 fthighest less lowest
- Change
- Fell 0.02 ftsince Oct 14, 8:45 PM
- Readings
- 83
The readings these charts were drawn from, as a table
| Time | Stage ft |
|---|---|
| Oct 15, 8:15 PM | 6.49 |
| Oct 15, 8:00 PM | 6.47 |
| Oct 15, 7:45 PM | 6.46 |
| Oct 15, 7:30 PM | 6.40 |
| Oct 15, 7:15 PM | 6.29 |
| Oct 15, 7:00 PM | 6.18 |
| Oct 15, 6:45 PM | 6.08 |
| Oct 15, 6:30 PM | 5.98 |
| Oct 15, 6:15 PM | 5.87 |
| Oct 15, 6:00 PM | 5.75 |
| Oct 15, 5:45 PM | 5.64 |
| Oct 15, 5:30 PM | 5.51 |
| Oct 15, 5:15 PM | 5.37 |
| Oct 15, 5:00 PM | 5.25 |
| Oct 15, 4:45 PM | 5.17 |
| Oct 15, 4:30 PM | 5.11 |
| Oct 15, 2:15 PM | 4.69 |
| Oct 15, 2:00 PM | 4.72 |
| Oct 15, 1:45 PM | 4.87 |
| Oct 15, 1:30 PM | 4.91 |
| Oct 15, 1:15 PM | 4.96 |
| Oct 15, 1:00 PM | 5.04 |
| Oct 15, 12:45 PM | 5.11 |
| Oct 15, 12:30 PM | 5.19 |
| Oct 15, 12:15 PM | 5.25 |
| Oct 15, 12:00 PM | 5.30 |
| Oct 15, 11:45 AM | 5.35 |
| Oct 15, 11:30 AM | 5.42 |
| Oct 15, 11:15 AM | 5.51 |
| Oct 15, 11:00 AM | 5.58 |
| Oct 15, 10:45 AM | 5.55 |
| Oct 15, 10:30 AM | 5.51 |
| Oct 15, 10:15 AM | 5.48 |
| Oct 15, 10:00 AM | 5.43 |
| Oct 15, 9:45 AM | 5.36 |
| Oct 15, 9:30 AM | 5.27 |
| Oct 15, 8:15 AM | 4.76 |
| Oct 15, 8:00 AM | 4.56 |
| Oct 15, 7:45 AM | 4.41 |
| Oct 15, 7:30 AM | 4.31 |
| Oct 15, 7:15 AM | 4.23 |
| Oct 15, 7:00 AM | 4.10 |
| Oct 15, 6:45 AM | 3.95 |
| Oct 15, 6:30 AM | 3.83 |
| Oct 15, 6:15 AM | 3.73 |
| Oct 15, 6:00 AM | 3.52 |
| Oct 15, 5:45 AM | 3.32 |
| Oct 15, 5:30 AM | 3.21 |
| Oct 15, 5:15 AM | 3.10 |
| Oct 15, 5:00 AM | 3.04 |
| Oct 15, 4:45 AM | 2.92 |
| Oct 15, 4:30 AM | 2.87 |
| Oct 15, 4:15 AM | 2.92 |
| Oct 15, 4:00 AM | 3.07 |
| Oct 15, 3:45 AM | 3.20 |
| Oct 15, 3:30 AM | 3.25 |
| Oct 15, 3:15 AM | 3.28 |
| Oct 15, 3:00 AM | 3.47 |
| Oct 15, 2:45 AM | 3.63 |
| Oct 15, 2:30 AM | 3.67 |
| Oct 15, 2:15 AM | 3.77 |
| Oct 15, 2:00 AM | 3.97 |
| Oct 15, 1:45 AM | 4.12 |
| Oct 15, 1:30 AM | 4.19 |
| Oct 15, 1:15 AM | 4.27 |
| Oct 15, 1:00 AM | 4.46 |
| Oct 15, 12:45 AM | 4.63 |
| Oct 15, 12:30 AM | 4.72 |
| Oct 15, 12:15 AM | 4.82 |
| Oct 15, 12:00 AM | 4.94 |
| Oct 14, 11:45 PM | 5.07 |
| Oct 14, 11:30 PM | 5.26 |
| Oct 14, 11:15 PM | 5.35 |
| Oct 14, 11:00 PM | 5.44 |
| Oct 14, 10:45 PM | 5.57 |
| Oct 14, 10:30 PM | 5.75 |
| Oct 14, 10:15 PM | 5.90 |
| Oct 14, 10:00 PM | 5.98 |
| Oct 14, 9:45 PM | 6.06 |
| Oct 14, 9:30 PM | 6.15 |
| Oct 14, 9:15 PM | 6.30 |
| Oct 14, 9:00 PM | 6.43 |
| Oct 14, 8:45 PM | 6.51 |
- Latest
- 6.49 ftOct 15, 8:15 PM
- Highest
- 7.13 ftOct 11, 7:00 PM
- Lowest
- 2.87 ftOct 15, 4:30 AM
- Range
- 4.26 fthighest less lowest
- Change
- Rose 1.65 ftsince Oct 8, 8:45 PM
- Readings
- 563
The readings these charts were drawn from, as a table
| Time | Stage ft |
|---|---|
| Oct 15, 8:15 PM | 6.49 |
| Oct 15, 7:45 PM | 6.46 |
| Oct 15, 6:45 PM | 6.08 |
| Oct 15, 5:45 PM | 5.64 |
| Oct 15, 4:45 PM | 5.17 |
| Oct 15, 2:15 PM | 4.69 |
| Oct 15, 1:45 PM | 4.87 |
| Oct 15, 12:45 PM | 5.11 |
| Oct 15, 11:45 AM | 5.35 |
| Oct 15, 10:45 AM | 5.55 |
| Oct 15, 9:45 AM | 5.36 |
| Oct 15, 8:15 AM | 4.76 |
| Oct 15, 7:45 AM | 4.41 |
| Oct 15, 6:45 AM | 3.95 |
| Oct 15, 5:45 AM | 3.32 |
| Oct 15, 4:45 AM | 2.92 |
| Oct 15, 3:45 AM | 3.20 |
| Oct 15, 2:45 AM | 3.63 |
| Oct 15, 1:45 AM | 4.12 |
| Oct 15, 12:45 AM | 4.63 |
| Oct 14, 11:45 PM | 5.07 |
| Oct 14, 10:45 PM | 5.57 |
| Oct 14, 9:45 PM | 6.06 |
| Oct 14, 8:45 PM | 6.51 |
| Oct 14, 6:15 PM | 6.14 |
| Oct 14, 5:45 PM | 5.89 |
| Oct 14, 4:45 PM | 5.39 |
| Oct 14, 3:45 PM | 4.93 |
| Oct 14, 2:45 PM | 4.41 |
| Oct 14, 1:45 PM | 4.43 |
| Oct 14, 12:45 PM | 4.66 |
| Oct 14, 11:45 AM | 5.08 |
| Oct 14, 10:45 AM | 5.43 |
| Oct 14, 9:45 AM | 5.60 |
| Oct 14, 8:45 AM | 5.43 |
| Oct 14, 7:45 AM | 4.96 |
| Oct 14, 6:45 AM | 4.43 |
| Oct 14, 5:45 AM | 3.97 |
| Oct 14, 4:45 AM | 3.38 |
| Oct 14, 3:45 AM | 3.00 |
| Oct 14, 2:45 AM | 3.34 |
| Oct 14, 1:45 AM | 3.83 |
| Oct 14, 12:45 AM | 4.32 |
| Oct 13, 11:45 PM | 4.78 |
| Oct 13, 10:45 PM | 5.32 |
| Oct 13, 9:45 PM | 5.84 |
| Oct 13, 8:45 PM | 6.26 |
| Oct 13, 7:45 PM | 6.64 |
| Oct 13, 4:15 PM | 5.35 |
| Oct 13, 3:45 PM | 4.98 |
| Oct 13, 2:45 PM | 4.49 |
| Oct 13, 1:45 PM | 4.26 |
| Oct 13, 12:45 PM | 4.44 |
| Oct 13, 11:45 AM | 4.87 |
| Oct 13, 10:45 AM | 5.30 |
| Oct 13, 9:45 AM | 5.66 |
| Oct 13, 8:45 AM | 5.87 |
| Oct 13, 7:45 AM | 5.67 |
| Oct 13, 6:45 AM | 5.20 |
| Oct 13, 5:45 AM | 4.62 |
| Oct 13, 4:45 AM | 4.16 |
| Oct 13, 3:45 AM | 3.49 |
| Oct 13, 2:15 AM | 3.69 |
| Oct 13, 1:45 AM | 3.81 |
| Oct 13, 12:45 AM | 4.33 |
| Oct 12, 11:45 PM | 4.71 |
| Oct 12, 10:45 PM | 5.23 |
| Oct 12, 9:45 PM | 5.77 |
| Oct 12, 8:45 PM | 6.23 |
| Oct 12, 7:45 PM | 6.73 |
| Oct 12, 6:15 PM | 6.63 |
| Oct 12, 5:45 PM | 6.50 |
| Oct 12, 4:45 PM | 5.99 |
| Oct 12, 3:45 PM | 5.44 |
| Oct 12, 2:45 PM | 4.89 |
| Oct 12, 1:45 PM | 4.31 |
| Oct 12, 12:45 PM | 4.37 |
| Oct 12, 11:45 AM | 4.75 |
| Oct 12, 10:45 AM | 5.07 |
| Oct 12, 9:45 AM | 5.54 |
| Oct 12, 8:15 AM | 6.12 |
| Oct 12, 7:45 AM | 6.23 |
| Oct 12, 6:45 AM | 5.98 |
| Oct 12, 5:45 AM | 5.56 |
| Oct 12, 4:45 AM | 4.98 |
| Oct 12, 3:45 AM | 4.44 |
| Oct 12, 2:45 AM | 3.86 |
| Oct 12, 1:45 AM | 4.00 |
| Oct 12, 12:45 AM | 4.37 |
| Oct 11, 11:45 PM | 4.83 |
| Oct 11, 10:45 PM | 5.33 |
| Oct 11, 9:45 PM | 5.81 |
| Oct 11, 8:15 PM | 6.58 |
| Oct 11, 7:45 PM | 6.78 |
| Oct 11, 6:45 PM | 7.10 |
| Oct 11, 5:45 PM | 6.92 |
| Oct 11, 2:15 PM | 5.05 |
| Oct 11, 1:45 PM | 4.79 |
| Oct 11, 12:45 PM | 4.34 |
| Oct 11, 11:45 AM | 4.56 |
| Oct 11, 10:45 AM | 4.99 |
| Oct 11, 9:15 AM | 5.74 |
| Oct 11, 8:45 AM | 5.85 |
| Oct 11, 7:45 AM | 6.32 |
| Oct 11, 6:15 AM | 6.31 |
| Oct 11, 5:45 AM | 6.16 |
| Oct 11, 4:45 AM | 5.66 |
| Oct 11, 3:45 AM | 5.14 |
| Oct 11, 2:45 AM | 4.49 |
| Oct 11, 1:45 AM | 3.84 |
| Oct 11, 12:45 AM | 4.11 |
| Oct 10, 11:15 PM | 4.73 |
| Oct 10, 10:45 PM | 5.05 |
| Oct 10, 9:45 PM | 5.51 |
| Oct 10, 8:45 PM | 6.07 |
| Oct 10, 7:45 PM | 6.55 |
| Oct 10, 6:45 PM | 6.98 |
| Oct 10, 5:15 PM | 6.86 |
| Oct 10, 4:45 PM | 6.63 |
| Oct 10, 3:45 PM | 6.10 |
| Oct 10, 2:15 PM | 5.23 |
| Oct 10, 1:45 PM | 5.01 |
| Oct 10, 12:45 PM | 4.28 |
| Oct 10, 11:45 AM | 4.35 |
| Oct 10, 10:45 AM | 4.67 |
| Oct 10, 9:45 AM | 5.19 |
| Oct 10, 8:45 AM | 5.70 |
| Oct 10, 7:45 AM | 6.11 |
| Oct 10, 6:15 AM | 6.62 |
| Oct 10, 5:45 AM | 6.64 |
| Oct 10, 4:15 AM | 6.11 |
| Oct 10, 3:45 AM | 5.77 |
| Oct 10, 2:15 AM | 4.94 |
| Oct 10, 1:45 AM | 4.69 |
| Oct 10, 12:45 AM | 4.15 |
| Oct 9, 11:45 PM | 4.38 |
| Oct 9, 10:45 PM | 4.80 |
| Oct 9, 9:45 PM | 5.26 |
| Oct 9, 8:45 PM | 5.72 |
| Oct 9, 7:45 PM | 6.22 |
| Oct 9, 6:45 PM | 6.70 |
| Oct 9, 3:15 PM | 5.82 |
| Oct 9, 2:45 PM | 5.46 |
| Oct 9, 1:45 PM | 4.93 |
| Oct 9, 12:45 PM | 4.24 |
| Oct 9, 11:45 AM | 3.89 |
| Oct 9, 10:45 AM | 4.10 |
| Oct 9, 9:45 AM | 4.54 |
| Oct 9, 8:45 AM | 5.03 |
| Oct 9, 7:45 AM | 5.60 |
| Oct 9, 6:45 AM | 6.07 |
| Oct 9, 5:45 AM | 6.40 |
| Oct 9, 4:15 AM | 6.04 |
| Oct 9, 3:45 AM | 5.87 |
| Oct 9, 2:45 AM | 5.34 |
| Oct 9, 1:45 AM | 4.78 |
| Oct 9, 12:45 AM | 4.25 |
| Oct 8, 11:45 PM | 3.68 |
| Oct 8, 10:45 PM | 3.95 |
| Oct 8, 9:45 PM | 4.40 |
| Oct 8, 8:45 PM | 4.84 |
- Latest
- 6.49 ftOct 15, 8:15 PM
- Highest
- 7.13 ftOct 11, 7:00 PM
- Lowest
- 2.83 ftSep 24, 11:45 AM
- Range
- 4.30 fthighest less lowest
- Change
- Fell 0.02 ftsince Sep 15, 8:45 PM
- Readings
- 2,627
The readings these charts were drawn from, as a table
| Day | High ft | Low ft | Average ft | Last ft | Readings |
|---|---|---|---|---|---|
| Oct 15 | 6.49 | 2.87 | 4.70 | 6.49 | 70 |
| Oct 14 | 6.57 | 2.94 | 4.80 | 5.07 | 88 |
| Oct 13 | 6.65 | 3.46 | 4.99 | 4.78 | 80 |
| Oct 12 | 6.77 | 3.79 | 5.22 | 4.71 | 88 |
| Oct 11 | 7.13 | 3.84 | 5.41 | 4.83 | 70 |
| Oct 10 | 7.04 | 4.15 | 5.48 | 4.73 | 74 |
| Oct 9 | 6.80 | 3.69 | 5.16 | 4.38 | 80 |
| Oct 8 | 6.36 | 3.34 | 5.02 | 3.68 | 84 |
| Oct 7 | 6.50 | 3.25 | 4.80 | 4.22 | 68 |
| Oct 6 | 6.62 | 3.10 | 4.80 | 4.99 | 76 |
| Oct 5 | 6.71 | 2.94 | 4.89 | 5.76 | 96 |
| Oct 4 | 6.81 | 2.90 | 4.92 | 6.47 | 96 |
| Oct 3 | 6.89 | 2.94 | 4.96 | 6.87 | 92 |
| Oct 2 | 6.93 | 3.10 | 5.02 | 6.46 | 84 |
| Oct 1 | 6.92 | 3.10 | 5.07 | 6.05 | 88 |
| Sep 30 | 6.76 | 3.02 | 4.80 | 5.41 | 88 |
| Sep 29 | 6.60 | 3.05 | 4.81 | 4.84 | 96 |
| Sep 28 | 6.39 | 3.16 | 4.78 | 4.36 | 92 |
| Sep 27 | 6.25 | 3.19 | 4.72 | 4.05 | 92 |
| Sep 26 | 6.01 | 3.10 | 4.68 | 3.63 | 96 |
| Sep 25 | 6.09 | 3.07 | 4.75 | 3.53 | 96 |
| Sep 24 | 6.06 | 2.83 | 4.60 | 3.67 | 88 |
| Sep 23 | 6.40 | 2.97 | 4.81 | 4.16 | 96 |
| Sep 22 | 6.61 | 3.13 | 4.87 | 5.00 | 88 |
| Sep 21 | 6.50 | 3.04 | 4.97 | 5.77 | 96 |
| Sep 20 | 6.65 | 3.04 | 4.91 | 6.06 | 90 |
| Sep 19 | 6.43 | 2.95 | 4.72 | 5.27 | 78 |
| Sep 18 | 6.61 | 2.92 | 4.89 | 6.51 | 96 |
| Sep 17 | 6.50 | 3.16 | 4.92 | 6.15 | 92 |
| Sep 16 | 6.71 | 3.30 | 5.04 | 5.99 | 96 |
| Sep 15 | 6.56 | 5.64 | 6.24 | 5.64 | 13 |
How it reports
- Schedule
- every houron the hour's :15
- Reports received, 24 hours
- 18 of 2475.0% of its schedule, 20 reports in all
- Reports received, 7 days
- 139 of 16882.7% of its schedule
- Longest silence, 7 days
- 4 hoursfrom Oct 9, 3:15 PM
- Latest report
- Oct 15, 8:15 PMlocal time
- Time to reach Storm Station
- 20 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 hour, 24 in 24 hours. Two reports in the same hour count as one received.
Ranking Statistics
247 score87.4of 100
- California median
- 91.6the median score of 4,465 stations
- Scoring higher
- 2,691stations in California
- Sharing its score
- 4ranks 2,692 to 2,695
- Points deducted
- 12.66.1 reports received, 2.9 accuracy, 2.0 arrival, 0.9 continuity, 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
- CD034rank 2,694; ahead on reports received 94.6% against 82.7%
- Next below
- BZRC1rank 2,696; behind on 247 score 87.4 against 87.3
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.
- Reports receivedweight 3582.728.9 of 35 pointsCalifornia median 98.5139 of 168 scheduled reports received in 7 days
- Arrivalweight 1080.48.0 of 10 pointsCalifornia median 81.2half its reports arrived within 20 min
- Continuityweight 1090.99.1 of 10 pointsCalifornia median 100.0longest silence 4 h, on a schedule of one report every 60 min
- Accuracyweight 20-17.1 of 20 points, at the medianCalifornia median 85.6-
- Instrument checksweight 15-15.0 of 15 points, at the medianCalifornia median 100.0-
- 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 (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 Ca DWR Streamflow Gage at Rock Slough above Contra Costa Canal
Gauges
Weather instruments
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.