USGS Stream Gage at Alameda C Flood Channel A Union City

Ranking Statistics

247 score93.2of 100

California median

91.6the median score of 4,465 stations

Scoring higher

1,673stations in California

Sharing its score

111ranks 1,674 to 1,784

Points deducted

6.83.0 arrival, 2.9 accuracy, 0.8 forecast check, 0.2 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

XKDC1rank 1,681; ahead on median arrival 24 min 48 s against 24 min 49 s

Next below

CWEC1rank 1,762; behind on longest silence 120 min against 121 min

Sharing its rank

25other 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 3599.434.8 of 35 pointsCalifornia median 98.5167 of 168 scheduled reports received in 7 days
2. Arrivalweight 1070.47.0 of 10 pointsCalifornia median 81.2half its reports arrived within 25 min
3. Continuityweight 10100.010.0 of 10 pointsCalifornia median 100.0longest silence 2 h, on a schedule of one report every 60 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.