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Live/Water/Virginia/Wolf Trap - Difficult Run

Wolf Trap - Difficult Run

A water gauge in Fairfax County, Virginia. Its stage was 193.74 ft as of Oct 17, 2:05 PM EDT.

Gauge DRBV2Fairfax County, VirginiaEvery gauge in Virginia

Stage now
193.74 ftreported Oct 17, 2:05 PM EDT
24 hour change
Fell 0.01 ftsince Oct 16, 2:05 PM
Elevation
205 ftabove sea level
Position
38.9527° N, 77.2911° W
Record since
2019

Water level

Wolf Trap - Difficult Run

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 Wolf Trap - Difficult Run: the water from 193.74 to 193.75 feet of stage, the latest 193.74 feet.WATER LEVEL, 24 HOURSFTHIGH 193.75 FT, OCT 17, 2:05 AM · LOW 193.74 FT, OCT 16, 8:05 PM193.70193.72193.74193.76193.78193.806 PM9 PMOct 173 AM6 AM9 AM12 PM3 PM193.74
Latest
193.74 ftOct 17, 2:05 PM
Highest
193.75 ftOct 17, 2:05 AM
Lowest
193.74 ftOct 16, 8:05 PM
Range
0.01 fthighest less lowest
Change
No changesince Oct 16, 8:05 PM
Readings
4
The readings these charts were drawn from, as a table
TimeStage ft
Oct 17, 2:05 PM193.74
Oct 17, 8:05 AM193.74
Oct 17, 2:05 AM193.75
Oct 16, 8:05 PM193.74
Water level, 7 days at Wolf Trap - Difficult Run: the water from 193.74 to 194.33 feet of stage, the latest 193.74 feet.WATER LEVEL, 7 DAYSFTHIGH 194.33 FT, OCT 11, 1:45 PM · LOW 193.74 FT, OCT 10, 8:05 PM193.6193.8194.0194.2194.4194.6Sun 11Mon 12Tue 13Wed 14Thu 15Fri 16Sat 17193.74
Latest
193.74 ftOct 17, 2:05 PM
Highest
194.33 ftOct 11, 1:45 PM
Lowest
193.74 ftOct 10, 8:05 PM
Range
0.59 fthighest less lowest
Change
No changesince Oct 10, 8:05 PM
Readings
48
The readings these charts were drawn from, as a table
TimeStage ft
Oct 17, 2:05 PM193.74
Oct 17, 8:05 AM193.74
Oct 17, 2:05 AM193.75
Oct 16, 8:05 PM193.74
Oct 16, 2:05 PM193.75
Oct 16, 8:05 AM193.74
Oct 16, 2:05 AM193.75
Oct 15, 8:05 PM193.75
Oct 15, 2:05 PM193.75
Oct 15, 8:05 AM193.75
Oct 15, 2:05 AM193.75
Oct 14, 8:05 PM193.75
Oct 14, 2:05 PM193.75
Oct 14, 8:05 AM193.74
Oct 14, 2:05 AM193.75
Oct 13, 8:05 PM193.75
Oct 13, 2:05 PM193.74
Oct 13, 8:05 AM193.74
Oct 13, 2:05 AM193.74
Oct 12, 8:05 PM193.75
Oct 12, 2:05 PM193.74
Oct 12, 8:05 AM193.74
Oct 12, 2:05 AM193.75
Oct 11, 8:05 PM193.74
Oct 11, 4:15 PM193.76
Oct 11, 3:55 PM193.88
Oct 11, 2:50 PM194.25
Oct 11, 1:45 PM194.33
Oct 11, 12:25 PM194.28
Oct 11, 11:50 AM194.12
Oct 11, 8:05 AM193.75
Oct 11, 2:05 AM193.74
Oct 10, 8:05 PM193.74
Water level, 30 days at Wolf Trap - Difficult Run: the water from 193.73 to 194.33 feet of stage, the latest 193.74 feet.WATER LEVEL, 30 DAYSFTHIGH 194.33 FT, OCT 11, 1:45 PM · LOW 193.73 FT, SEP 25, 2:05 PM193.6193.8194.0194.2194.4194.6Sep 17Sep 22Sep 27Oct 2Oct 7Oct 12193.74
Latest
193.74 ftOct 17, 2:05 PM
Highest
194.33 ftOct 11, 1:45 PM
Lowest
193.73 ftSep 25, 2:05 PM
Range
0.60 fthighest less lowest
Change
Fell 0.01 ftsince Sep 17, 8:05 PM
Readings
139
The readings these charts were drawn from, as a table
DayHigh ftLow ftAverage ftLast ftReadings
Oct 17193.75193.74193.74193.743
Oct 16193.75193.74193.75193.744
Oct 15193.75193.75193.75193.754
Oct 14193.75193.74193.75193.754
Oct 13193.75193.74193.74193.754
Oct 12193.75193.74193.75193.754
Oct 11194.33193.74194.02193.7424
Oct 10193.74193.74193.74193.744
Oct 9193.74193.73193.74193.744
Oct 8193.74193.74193.74193.744
Oct 7193.74193.74193.74193.744
Oct 6193.74193.74193.74193.744
Oct 5193.75193.75193.75193.754
Oct 4193.75193.75193.75193.754
Oct 3193.75193.75193.75193.754
Oct 2193.75193.74193.75193.754
Oct 1193.75193.74193.75193.754
Sep 30193.75193.75193.75193.754
Sep 29193.75193.75193.75193.754
Sep 28193.75193.75193.75193.754
Sep 27193.75193.74193.75193.754
Sep 26193.75193.73193.74193.754
Sep 25193.74193.73193.74193.744
Sep 24193.75193.74193.75193.754
Sep 23193.75193.75193.75193.754
Sep 22193.75193.75193.75193.754
Sep 21193.75193.75193.75193.754
Sep 20193.75193.75193.75193.753
Sep 19193.75193.74193.75193.754
Sep 18193.75193.75193.75193.754
Sep 17193.75193.75193.75193.751

How it reports

Schedule
every 6 hours
Reports received, 24 hours
4 of 4100% of its schedule
Reports received, 7 days
28 of 28100% of its schedule, 43 reports in all
Longest silence, 7 days
6 hoursfrom Oct 10, 8:05 PM
Latest report
Oct 17, 2:05 PMlocal time
Time to reach Storm Station
14 min9 in 10 within 16 min

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

Its schedule is one report every 6 hours, 4 in 24 hours. Two reports in the same 6 hours count as one received.

Ranking Statistics

247 score99.6of 100

Virginia median
95.9the median score of 1,554 stations
Scoring higher
7stations in Virginia
Sharing its score
199ranks 8 to 206
Points deducted
0.40.4 forecast check
Counted at the median
Accuracy, instrument checks, forecast checknot measured at this station; Virginia median 100.0, 100.0, 95.7
Next above
AKQrank 8; ahead on reports due 168 against 28, the longer record first
Next below
BUVV2rank 10; behind on reports due 28 against 7, the longer record first

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 35100.035.0 of 35 pointsVirginia median 97.628 of 28 scheduled reports received in 7 days
  2. Arrivalweight 10100.010.0 of 10 pointsVirginia median 92.7half its reports arrived within 14 min
  3. Continuityweight 10100.010.0 of 10 pointsVirginia median 100.0longest silence 6 h, on a schedule of one report every 6 h
  4. Accuracyweight 20-20.0 of 20 points, at the medianVirginia median 100.0-
  5. Instrument checksweight 15-15.0 of 15 points, at the medianVirginia median 100.0-
  6. Forecast checkweight 10-9.6 of 10 points, at the medianVirginia median 95.7-

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 36 min, none at 6 h
Continuity
Full marks for a longest silence of 3 reports or less (18 h), none for 72 (432 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 Wolf Trap - Difficult Run

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.