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Live/Water/Virginia/Broad Run 7 SE Leesburg/Sterling

Broad Run 7 SE Leesburg/Sterling

A gauge on the Broad Run in Loudoun County, Virginia. Its stage was 2.54 ft as of Oct 15, 9:40 PM EDT.

Gauge LRGV2Loudoun County, VirginiaEvery gauge in Virginia

Stage now
2.54 ftreported Oct 15, 9:40 PM EDT
24 hour change
Fell 0.25 ftsince Oct 14, 9:40 PM
Elevation
200 ftabove sea level
County
Loudoun County
Position
39.0467° N, 77.4328° W
Record since
2010

Water level

Broad Run 7 SE Leesburg/Sterling

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 Broad Run 7 SE Leesburg/Sterling: the water from 2.54 to 2.78 feet of stage, the latest 2.54 feet.WATER LEVEL, 24 HOURSFTHIGH 2.78 FT, OCT 14, 10:45 PM · LOW 2.54 FT, OCT 15, 9:10 PM2.52.62.72.82.9Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PM2.54
Latest
2.54 ftOct 15, 9:40 PM
Highest
2.78 ftOct 14, 10:45 PM
Lowest
2.54 ftOct 15, 9:10 PM
Range
0.24 fthighest less lowest
Change
Fell 0.24 ftsince Oct 14, 10:45 PM
Readings
276
The readings these charts were drawn from, as a table
TimeStage ft
Oct 15, 9:40 PM2.54
Oct 15, 9:35 PM2.54
Oct 15, 9:30 PM2.55
Oct 15, 9:25 PM2.55
Oct 15, 9:20 PM2.56
Oct 15, 9:15 PM2.55
Oct 15, 9:10 PM2.54
Oct 15, 9:05 PM2.56
Oct 15, 9:00 PM2.55
Oct 15, 8:55 PM2.55
Oct 15, 8:50 PM2.55
Oct 15, 8:45 PM2.56
Oct 15, 8:40 PM2.55
Oct 15, 8:35 PM2.55
Oct 15, 8:30 PM2.56
Oct 15, 8:25 PM2.55
Oct 15, 8:20 PM2.56
Oct 15, 8:15 PM2.56
Oct 15, 8:10 PM2.56
Oct 15, 8:05 PM2.56
Oct 15, 8:00 PM2.55
Oct 15, 7:55 PM2.55
Oct 15, 7:50 PM2.56
Oct 15, 7:45 PM2.56
Oct 15, 7:40 PM2.56
Oct 15, 7:35 PM2.56
Oct 15, 7:30 PM2.56
Oct 15, 7:25 PM2.56
Oct 15, 7:20 PM2.57
Oct 15, 7:15 PM2.57
Oct 15, 7:10 PM2.57
Oct 15, 7:05 PM2.57
Oct 15, 7:00 PM2.57
Oct 15, 6:55 PM2.57
Oct 15, 6:50 PM2.57
Oct 15, 6:45 PM2.57
Oct 15, 6:40 PM2.56
Oct 15, 6:35 PM2.58
Oct 15, 6:30 PM2.58
Oct 15, 6:25 PM2.58
Oct 15, 6:20 PM2.58
Oct 15, 6:15 PM2.58
Oct 15, 6:10 PM2.58
Oct 15, 6:05 PM2.58
Oct 15, 6:00 PM2.59
Oct 15, 5:55 PM2.59
Oct 15, 5:50 PM2.57
Oct 15, 5:45 PM2.58
Oct 15, 5:40 PM2.58
Oct 15, 5:35 PM2.59
Oct 15, 5:30 PM2.58
Oct 15, 5:25 PM2.57
Oct 15, 5:20 PM2.58
Oct 15, 5:15 PM2.58
Oct 15, 5:10 PM2.58
Oct 15, 5:05 PM2.58
Oct 15, 5:00 PM2.57
Oct 15, 4:55 PM2.57
Oct 15, 4:50 PM2.58
Oct 15, 4:45 PM2.57
Oct 15, 4:40 PM2.58
Oct 15, 4:35 PM2.57
Oct 15, 4:30 PM2.58
Oct 15, 4:25 PM2.57
Oct 15, 4:20 PM2.57
Oct 15, 4:15 PM2.58
Oct 15, 4:10 PM2.56
Oct 15, 4:05 PM2.57
Oct 15, 4:00 PM2.57
Oct 15, 3:55 PM2.57
Oct 15, 3:50 PM2.57
Oct 15, 3:45 PM2.57
Oct 15, 3:40 PM2.57
Oct 15, 3:35 PM2.57
Oct 15, 3:30 PM2.57
Oct 15, 3:25 PM2.57
Oct 15, 3:20 PM2.57
Oct 15, 3:15 PM2.57
Oct 15, 3:10 PM2.56
Oct 15, 3:05 PM2.56
Oct 15, 3:00 PM2.56
Oct 15, 2:55 PM2.57
Oct 15, 2:50 PM2.57
Oct 15, 2:45 PM2.56
Oct 15, 2:40 PM2.57
Oct 15, 2:35 PM2.58
Oct 15, 2:30 PM2.57
Oct 15, 2:25 PM2.57
Oct 15, 2:20 PM2.57
Oct 15, 2:15 PM2.57
Oct 15, 2:10 PM2.57
Oct 15, 2:05 PM2.57
Oct 15, 2:00 PM2.58
Oct 15, 1:55 PM2.58
Oct 15, 1:50 PM2.57
Oct 15, 1:45 PM2.57
Oct 15, 1:40 PM2.58
Oct 15, 1:35 PM2.57
Oct 15, 1:30 PM2.58
Oct 15, 1:25 PM2.58
Oct 15, 1:20 PM2.58
Oct 15, 1:15 PM2.58
Oct 15, 1:10 PM2.57
Oct 15, 1:05 PM2.58
Oct 15, 1:00 PM2.57
Oct 15, 12:55 PM2.58
Oct 15, 12:50 PM2.58
Oct 15, 12:45 PM2.57
Oct 15, 12:40 PM2.58
Oct 15, 12:35 PM2.58
Oct 15, 12:30 PM2.58
Oct 15, 12:25 PM2.58
Oct 15, 12:20 PM2.57
Oct 15, 12:15 PM2.58
Oct 15, 12:10 PM2.57
Oct 15, 12:05 PM2.57
Oct 15, 12:00 PM2.58
Oct 15, 11:55 AM2.58
Oct 15, 11:50 AM2.57
Oct 15, 11:45 AM2.57
Oct 15, 11:40 AM2.57
Oct 15, 11:35 AM2.57
Oct 15, 11:30 AM2.58
Oct 15, 11:25 AM2.56
Oct 15, 11:20 AM2.57
Oct 15, 11:15 AM2.57
Oct 15, 11:10 AM2.57
Oct 15, 11:05 AM2.56
Oct 15, 11:00 AM2.57
Oct 15, 10:55 AM2.58
Oct 15, 10:50 AM2.57
Oct 15, 10:45 AM2.59
Oct 15, 10:40 AM2.58
Oct 15, 10:35 AM2.58
Oct 15, 10:30 AM2.59
Oct 15, 10:25 AM2.58
Oct 15, 10:20 AM2.59
Oct 15, 10:15 AM2.59
Oct 15, 10:10 AM2.59
Oct 15, 10:05 AM2.59
Oct 15, 10:00 AM2.60
Oct 15, 9:55 AM2.59
Oct 15, 9:50 AM2.59
Oct 15, 9:45 AM2.59
Oct 15, 9:40 AM2.60
Oct 15, 9:35 AM2.60
Oct 15, 9:30 AM2.60
Oct 15, 9:25 AM2.60
Oct 15, 9:20 AM2.60
Oct 15, 9:15 AM2.60
Oct 15, 9:10 AM2.60
Oct 15, 9:05 AM2.60
Oct 15, 9:00 AM2.60
Oct 15, 8:55 AM2.60
Oct 15, 8:50 AM2.60
Oct 15, 8:45 AM2.60
Oct 15, 8:40 AM2.60
Oct 15, 8:35 AM2.60
Oct 15, 8:30 AM2.60
Oct 15, 8:25 AM2.61
Oct 15, 8:20 AM2.61
Oct 15, 8:15 AM2.61
Oct 15, 8:10 AM2.61
Oct 15, 8:05 AM2.61
Oct 15, 8:00 AM2.60
Oct 15, 7:55 AM2.62
Oct 15, 7:50 AM2.63
Oct 15, 7:45 AM2.62
Oct 15, 7:40 AM2.64
Oct 15, 7:35 AM2.63
Oct 15, 7:30 AM2.63
Oct 15, 7:25 AM2.64
Oct 15, 7:20 AM2.63
Oct 15, 7:15 AM2.63
Oct 15, 7:10 AM2.63
Oct 15, 7:05 AM2.64
Oct 15, 7:00 AM2.64
Oct 15, 6:55 AM2.65
Oct 15, 6:50 AM2.64
Oct 15, 6:45 AM2.64
Oct 15, 6:40 AM2.65
Oct 15, 6:35 AM2.65
Oct 15, 6:30 AM2.64
Oct 15, 6:25 AM2.64
Oct 15, 6:20 AM2.64
Oct 15, 6:15 AM2.65
Oct 15, 6:10 AM2.65
Oct 15, 6:05 AM2.65
Oct 15, 6:00 AM2.66
Oct 15, 5:55 AM2.66
Oct 15, 5:50 AM2.67
Oct 15, 5:45 AM2.67
Oct 15, 5:40 AM2.68
Oct 15, 5:35 AM2.66
Oct 15, 5:30 AM2.68
Oct 15, 5:25 AM2.67
Oct 15, 5:20 AM2.67
Oct 15, 5:15 AM2.68
Oct 15, 5:10 AM2.68
Oct 15, 5:05 AM2.68
Oct 15, 5:00 AM2.67
Oct 15, 4:55 AM2.68
Oct 15, 4:50 AM2.68
Oct 15, 4:45 AM2.67
Oct 15, 4:40 AM2.68
Oct 15, 4:35 AM2.69
Oct 15, 4:30 AM2.68
Oct 15, 4:25 AM2.69
Oct 15, 4:20 AM2.69
Oct 15, 4:15 AM2.70
Oct 15, 4:10 AM2.69
Oct 15, 4:05 AM2.69
Oct 15, 4:00 AM2.69
Oct 15, 3:55 AM2.70
Oct 15, 3:50 AM2.70
Oct 15, 3:45 AM2.69
Oct 15, 3:40 AM2.70
Oct 15, 3:35 AM2.71
Oct 15, 3:30 AM2.70
Oct 15, 3:25 AM2.71
Oct 15, 3:20 AM2.72
Oct 15, 3:15 AM2.72
Oct 15, 3:10 AM2.72
Oct 15, 3:05 AM2.71
Oct 15, 3:00 AM2.71
Oct 15, 2:55 AM2.72
Oct 15, 2:50 AM2.72
Oct 15, 2:45 AM2.72
Oct 15, 2:40 AM2.72
Oct 15, 2:35 AM2.72
Oct 15, 2:30 AM2.72
Oct 15, 2:25 AM2.72
Oct 15, 2:20 AM2.72
Oct 15, 2:15 AM2.73
Oct 15, 2:10 AM2.74
Oct 15, 2:05 AM2.73
Oct 15, 2:00 AM2.74
Oct 15, 1:55 AM2.73
Oct 15, 1:50 AM2.73
Oct 15, 1:45 AM2.74
Oct 15, 1:40 AM2.75
Oct 15, 1:35 AM2.74
Oct 15, 1:30 AM2.75
Oct 15, 1:25 AM2.75
Oct 15, 1:20 AM2.75
Oct 15, 1:15 AM2.74
Oct 15, 1:10 AM2.74
Oct 15, 1:05 AM2.75
Oct 15, 1:00 AM2.74
Oct 15, 12:55 AM2.75
Oct 15, 12:50 AM2.75
Oct 15, 12:45 AM2.75
Oct 15, 12:40 AM2.76
Oct 15, 12:35 AM2.75
Oct 15, 12:30 AM2.75
Oct 15, 12:25 AM2.76
Oct 15, 12:20 AM2.77
Oct 15, 12:15 AM2.76
Oct 15, 12:10 AM2.77
Oct 15, 12:05 AM2.75
Oct 15, 12:00 AM2.77
Oct 14, 11:55 PM2.76
Oct 14, 11:50 PM2.76
Oct 14, 11:45 PM2.76
Oct 14, 11:40 PM2.76
Oct 14, 11:35 PM2.77
Oct 14, 11:30 PM2.77
Oct 14, 11:25 PM2.75
Oct 14, 11:20 PM2.76
Oct 14, 11:15 PM2.77
Oct 14, 11:10 PM2.77
Oct 14, 11:05 PM2.77
Oct 14, 11:00 PM2.77
Oct 14, 10:55 PM2.78
Oct 14, 10:50 PM2.77
Oct 14, 10:45 PM2.78
Water level, 7 days at Broad Run 7 SE Leesburg/Sterling: the water from 1.50 to 7.95 feet of stage, the latest 2.54 feet.WATER LEVEL, 7 DAYSFTHIGH 7.95 FT, OCT 12, 10:55 AM · LOW 1.50 FT, OCT 10, 4:10 PM0246810Fri 9Sat 10Sun 11Mon 12Tue 13Wed 14Thu 152.54
Latest
2.54 ftOct 15, 9:40 PM
Highest
7.95 ftOct 12, 10:55 AM
Lowest
1.50 ftOct 10, 4:10 PM
Range
6.45 fthighest less lowest
Change
Rose 0.92 ftsince Oct 8, 10:45 PM
Readings
1,980
The readings these charts were drawn from, as a table
TimeStage ft
Oct 15, 9:40 PM2.54
Oct 15, 8:55 PM2.55
Oct 15, 7:55 PM2.55
Oct 15, 6:55 PM2.57
Oct 15, 5:55 PM2.59
Oct 15, 4:55 PM2.57
Oct 15, 3:55 PM2.57
Oct 15, 2:55 PM2.57
Oct 15, 1:55 PM2.58
Oct 15, 12:55 PM2.58
Oct 15, 11:55 AM2.58
Oct 15, 10:55 AM2.58
Oct 15, 9:55 AM2.59
Oct 15, 8:55 AM2.60
Oct 15, 7:55 AM2.62
Oct 15, 6:55 AM2.65
Oct 15, 5:55 AM2.66
Oct 15, 4:55 AM2.68
Oct 15, 3:55 AM2.70
Oct 15, 2:55 AM2.72
Oct 15, 1:55 AM2.73
Oct 15, 12:55 AM2.75
Oct 14, 11:55 PM2.76
Oct 14, 10:55 PM2.78
Oct 14, 9:55 PM2.78
Oct 14, 8:55 PM2.80
Oct 14, 7:55 PM2.82
Oct 14, 6:55 PM2.83
Oct 14, 5:55 PM2.84
Oct 14, 4:55 PM2.83
Oct 14, 3:55 PM2.87
Oct 14, 2:55 PM2.88
Oct 14, 1:55 PM2.88
Oct 14, 12:55 PM2.91
Oct 14, 11:55 AM2.94
Oct 14, 10:55 AM2.98
Oct 14, 9:55 AM3.00
Oct 14, 8:55 AM3.02
Oct 14, 7:55 AM3.05
Oct 14, 6:55 AM3.07
Oct 14, 5:55 AM3.11
Oct 14, 4:55 AM3.13
Oct 14, 3:55 AM3.16
Oct 14, 2:55 AM3.20
Oct 14, 1:55 AM3.23
Oct 14, 12:55 AM3.26
Oct 13, 11:55 PM3.29
Oct 13, 10:55 PM3.33
Oct 13, 9:55 PM3.37
Oct 13, 8:55 PM3.41
Oct 13, 7:55 PM3.44
Oct 13, 6:55 PM3.48
Oct 13, 5:55 PM3.53
Oct 13, 4:55 PM3.57
Oct 13, 3:55 PM3.62
Oct 13, 2:55 PM3.67
Oct 13, 1:55 PM3.71
Oct 13, 12:55 PM3.76
Oct 13, 11:55 AM3.81
Oct 13, 10:55 AM3.86
Oct 13, 9:55 AM3.94
Oct 13, 8:55 AM3.99
Oct 13, 7:55 AM4.06
Oct 13, 6:55 AM4.14
Oct 13, 5:55 AM4.21
Oct 13, 4:55 AM4.30
Oct 13, 3:55 AM4.39
Oct 13, 2:55 AM4.49
Oct 13, 1:55 AM4.55
Oct 13, 12:55 AM4.66
Oct 12, 11:55 PM4.75
Oct 12, 10:55 PM4.87
Oct 12, 9:55 PM5.00
Oct 12, 8:55 PM5.12
Oct 12, 7:55 PM5.26
Oct 12, 6:55 PM5.44
Oct 12, 5:55 PM5.65
Oct 12, 4:55 PM5.98
Oct 12, 3:55 PM6.47
Oct 12, 2:55 PM7.13
Oct 12, 1:55 PM7.66
Oct 12, 12:40 PM7.82
Oct 12, 11:55 AM7.84
Oct 12, 10:55 AM7.95
Oct 12, 9:55 AM7.92
Oct 12, 8:55 AM7.87
Oct 12, 7:55 AM7.83
Oct 12, 6:55 AM7.74
Oct 12, 5:55 AM7.61
Oct 12, 4:55 AM7.24
Oct 12, 3:55 AM6.76
Oct 12, 2:55 AM6.43
Oct 12, 1:55 AM6.48
Oct 12, 12:55 AM6.58
Oct 11, 11:55 PM6.63
Oct 11, 10:55 PM6.68
Oct 11, 9:55 PM6.81
Oct 11, 8:55 PM7.05
Oct 11, 7:55 PM7.28
Oct 11, 6:55 PM7.47
Oct 11, 5:55 PM7.58
Oct 11, 4:55 PM7.70
Oct 11, 3:55 PM7.62
Oct 11, 2:55 PM7.47
Oct 11, 1:55 PM7.26
Oct 11, 12:55 PM6.68
Oct 11, 11:55 AM6.38
Oct 11, 10:55 AM5.83
Oct 11, 9:55 AM4.82
Oct 11, 8:55 AM3.85
Oct 11, 7:55 AM2.94
Oct 11, 6:55 AM2.29
Oct 11, 5:55 AM1.85
Oct 11, 4:55 AM1.67
Oct 11, 3:55 AM1.55
Oct 11, 2:55 AM1.52
Oct 11, 1:55 AM1.50
Oct 11, 12:55 AM1.51
Oct 10, 11:55 PM1.51
Oct 10, 10:55 PM1.52
Oct 10, 9:55 PM1.52
Oct 10, 8:55 PM1.52
Oct 10, 7:55 PM1.52
Oct 10, 6:55 PM1.52
Oct 10, 5:55 PM1.50
Oct 10, 4:55 PM1.50
Oct 10, 3:55 PM1.51
Oct 10, 2:55 PM1.52
Oct 10, 1:55 PM1.53
Oct 10, 12:40 PM1.54
Oct 10, 11:55 AM1.54
Oct 10, 10:55 AM1.54
Oct 10, 9:55 AM1.54
Oct 10, 8:55 AM1.55
Oct 10, 7:55 AM1.55
Oct 10, 6:55 AM1.56
Oct 10, 5:55 AM1.55
Oct 10, 4:55 AM1.55
Oct 10, 3:55 AM1.56
Oct 10, 2:55 AM1.56
Oct 10, 1:55 AM1.56
Oct 10, 12:55 AM1.57
Oct 9, 11:55 PM1.57
Oct 9, 10:55 PM1.57
Oct 9, 9:55 PM1.57
Oct 9, 8:55 PM1.57
Oct 9, 7:55 PM1.56
Oct 9, 6:55 PM1.56
Oct 9, 5:55 PM1.56
Oct 9, 4:55 PM1.55
Oct 9, 3:55 PM1.55
Oct 9, 2:55 PM1.56
Oct 9, 1:55 PM1.57
Oct 9, 12:55 PM1.59
Oct 9, 11:55 AM1.60
Oct 9, 10:55 AM1.61
Oct 9, 9:55 AM1.60
Oct 9, 8:55 AM1.59
Oct 9, 7:55 AM1.60
Oct 9, 6:55 AM1.60
Oct 9, 5:55 AM1.61
Oct 9, 4:55 AM1.61
Oct 9, 3:55 AM1.61
Oct 9, 2:55 AM1.62
Oct 9, 1:55 AM1.62
Oct 9, 12:55 AM1.62
Oct 8, 11:55 PM1.62
Oct 8, 10:55 PM1.62
Water level, 30 days at Broad Run 7 SE Leesburg/Sterling: the water from 1.50 to 7.95 feet of stage, the latest 2.54 feet.WATER LEVEL, 30 DAYSFTHIGH 7.95 FT, OCT 12, 10:55 AM · LOW 1.50 FT, OCT 10, 4:10 PM0246810Sep 16Sep 21Sep 26Oct 1Oct 6Oct 112.54
Latest
2.54 ftOct 15, 9:40 PM
Highest
7.95 ftOct 12, 10:55 AM
Lowest
1.50 ftOct 10, 4:10 PM
Range
6.45 fthighest less lowest
Change
Rose 0.88 ftsince Sep 15, 10:45 PM
Readings
8,496
The readings these charts were drawn from, as a table
DayHigh ftLow ftAverage ftLast ftReadings
Oct 152.772.542.622.54261
Oct 143.302.752.972.76288
Oct 134.753.293.893.29288
Oct 127.954.756.624.75276
Oct 117.701.504.986.63288
Oct 101.571.501.541.51276
Oct 91.631.551.591.57288
Oct 81.691.601.651.62288
Oct 71.791.691.741.69276
Oct 61.871.781.831.78288
Oct 52.001.861.921.87288
Oct 42.141.992.042.00288
Oct 32.251.842.142.14279
Oct 21.821.741.781.81285
Oct 11.891.771.831.81288
Sep 302.031.881.951.89276
Sep 292.111.992.042.02288
Sep 282.242.102.162.10288
Sep 272.412.252.352.25288
Sep 262.512.312.392.38288
Sep 252.852.512.662.51288
Sep 243.792.853.242.85288
Sep 235.193.804.643.80288
Sep 226.543.675.205.17276
Sep 214.501.612.353.66288
Sep 201.701.571.631.67255
Sep 191.731.601.661.60261
Sep 182.071.731.891.73288
Sep 171.811.601.671.79288
Sep 161.671.641.661.65288
Sep 151.661.661.661.6615

How it reports

Schedule
every houron the hour's :40
Reports received, 24 hours
24 of 24100% of its schedule
Reports received, 7 days
165 of 16898.2% of its schedule
Longest silence, 7 days
2 hoursfrom Oct 10, 12:40 PM
Latest report
Oct 15, 9:40 PMlocal time
Time to reach Storm Station
19 min9 in 10 within 21 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 score97.2of 100

Virginia median
95.9the median score of 1,541 stations
Scoring higher
596stations in Virginia
Sharing its score
22ranks 597 to 618
Points deducted
2.81.8 arrival, 0.6 reports received, 0.4 forecast check
Counted at the median
Accuracy, instrument checks, forecast checknot measured at this station; Virginia median 100.0, 100.0, 96.5
Next above
SMSV2rank 596; ahead on 247 score 97.3 against 97.2
Next below
ALTV2rank 605; behind on median arrival 18 min 53 s against 18 min 54 s
Sharing its rank
7other 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 3598.234.4 of 35 pointsVirginia median 97.9165 of 168 scheduled reports received in 7 days
  2. Arrivalweight 1082.28.2 of 10 pointsVirginia median 92.7half its reports arrived within 19 min
  3. Continuityweight 10100.010.0 of 10 pointsVirginia median 100.0longest silence 2 h, on a schedule of one report every 60 min
  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 10-9.7 of 10 points, at the medianVirginia median 96.5-

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 Broad Run 7 SE Leesburg/Sterling

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.