Storm Station

At a dam

DCP network, identified by the register

Identifier
FOLC1
Latitude
38.70000 N
Longitude
121.16690 W
Elevation
-
Listed
Automatically, on 166 reports in 159 hours over the last seven days
Rank
2,699of 4,072 in California, Oct 4

On the radar over Folsom Dam (American River)ReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

At a dam

Drawn as the kind of place it stands at. 19 instruments in California stand at one.

Station charts

Folsom Dam (American River) Report

Rank 2,699 of 4,072 in California, Oct 4. The 247 rank orders a state's stations by their 247 score out of 100: how reliably they report, how accurate their readings are against a reference station, how their readings pass their checks, and how they stand against the forecast.

247 score87.7of 100

  1. Reports receivedweight 3598.8166 of 168 scheduled reports received in 7 days
  2. Arrivalweight 1030.7half its reports arrived within 45 min
  3. Continuityweight 10100.0longest silence 2 h, on a schedule of one report every 60 min
  4. Accuracyweight 20--
  5. Instrument checksweight 15--
  6. Forecast checkweight 10--

The score is the weighted mean of its six parts, from the last 7 days. How a station is ranked sets out each part.

Rank
2,699of 4,072 in California, Oct 4
Schedule
every houron the hour's :00
Reports received, 24 hours
23 of 2495.8% of its schedule
Reports received, 7 days
167 of 16899.4% of its schedule
Days reported, 30 days
-
Longest silence, 7 days
2 hoursfrom Oct 3, 11:00 PM
Latest report
Oct 4, 8:00 AMlocal time

The reports received are counted from the network's own archive of this station's reports. Its 247 rank is counted from Storm Station's own record, which holds less than 7 days of it so far: 166 of 168 scheduled reports received, 98.8%.

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

Chart of the 4,072 ranked stations in California on Oct 4 by the share of their scheduled reports received in Storm Station's own record, up to 7 days, in tenths: 0 to 9 per cent, 86; 10 to 19 per cent, 52; 20 to 29 per cent, 8; 30 to 39 per cent, 43; 40 to 49 per cent, 36; 50 to 59 per cent, 54; 60 to 69 per cent, 151; 70 to 79 per cent, 116; 80 to 89 per cent, 218; 90 to 99 per cent, 2,244; 100 per cent, 1,064. Folsom Dam (American River) received 98.8 per cent, 166 of 168 scheduled reports, rank 2,699 of 4,072.WHERE IT RANKS IN CALIFORNIA, Oct 4THIS ONE: 98.8%, 166 OF 168, RANK 2,699 OF 4,072PER CENT OF SCHEDULED REPORTS RECEIVEDIN STORM STATION'S OWN RECORD, UP TO 7 DAYS1101001,0000 to 98610 to 195220 to 29830 to 394340 to 493650 to 595460 to 6915170 to 7911680 to 8921890 to 992,2441001,064STATIONS, LOG SCALE
Chart of Folsom Dam (American River)'s rank in California by how it reported, day by day, from 2026-09-26 to 2026-10-04: 2026-09-26 rank 1,689 of 3,089; 2026-09-27 rank 1,574 of 3,141; 2026-09-28 rank 1,531 of 3,395; 2026-09-29 rank 1,485 of 3,460; 2026-09-30 rank 1,992 of 3,491; 2026-10-01 rank 2,143 of 3,586; 2026-10-02 rank 2,770 of 3,944; 2026-10-03 rank 2,769 of 3,944; 2026-10-04 rank 2,699 of 4,072.ITS RANK IN CALIFORNIA, DAY BY DAYRANK, FIRST AT THE TOP11,0002,0003,000Sep 26Sep 28Sep 30Oct 2Oct 4
The ranking these charts were drawn from, as tables
Share of scheduled reports receivedStations
100%1,064
90 to 99%2,244
80 to 89%218
70 to 79%116
60 to 69%151
50 to 59%54
40 to 49%36
30 to 39%43
20 to 29%8
10 to 19%52
0 to 9%86
DayRankStations rankedShare received
Oct 4, 20262,6994,07298.8%
Oct 3, 20262,7693,94498.7%
Oct 2, 20262,7703,94498.7%
Oct 1, 20262,1433,58698.5%
Sep 30, 20261,9923,49199.1%
Sep 29, 20261,4853,460100.0%
Sep 28, 20261,5313,395100.0%
Sep 27, 20261,5743,141100.0%
Sep 26, 20261,6893,089100.0%
Reports received at Folsom Dam (American River), reports from 0.0 to 2.0, the latest 0.0, in reports.REPORTS RECEIVEDreports00.511.5212 PM3 PM6 PM9 PMOct 43 AM6 AM9 AM
Reports received at Folsom Dam (American River), reports from 0.0 to 2.0, the latest 0.0, in reports.REPORTS RECEIVEDreports00.511.52Mon 28Tue 29Wed 30Thu 1Fri 2Sat 3Sun 4

The instrumentWhat an instrument is FB-INS-001

What it seesMoon and tides FB-CLK-003Hurricane FB-EVT-043Nor'easter FB-EVT-066Flash flood FB-EVT-100Coastal flood FB-EVT-105

Near Folsom Dam (American River)

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