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Live/Water/Maryland/Gwynns Falls at Villa Nova

Gwynns Falls at Villa Nova

A water gauge in Baltimore County, Maryland. Its stage was 0.84 ft as of Oct 16, 12:35 AM EDT.

Gauge VNVM2Baltimore County, MarylandEvery gauge in Maryland

Stage now
0.84 ftreported Oct 16, 12:35 AM EDT
24 hour change
Fell 0.03 ftsince Oct 15, 12:35 AM
Elevation
400 ftabove sea level
County
Baltimore County
Position
39.3458° N, 76.7333° W
Record since
2011

Water level

Gwynns Falls at Villa Nova

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 Gwynns Falls at Villa Nova: the water from 0.83 to 0.87 feet of stage, the latest 0.84 feet.WATER LEVEL, 24 HOURSFTHIGH 0.87 FT, OCT 15, 1:15 AM · LOW 0.83 FT, OCT 15, 10:35 PM0.820.840.860.883 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 160.84
Latest
0.84 ftOct 16, 12:35 AM
Highest
0.87 ftOct 15, 1:15 AM
Lowest
0.83 ftOct 15, 10:35 PM
Range
0.04 fthighest less lowest
Change
Fell 0.03 ftsince Oct 15, 1:15 AM
Readings
281
The readings these charts were drawn from, as a table
TimeStage ft
Oct 16, 12:35 AM0.84
Oct 16, 12:30 AM0.83
Oct 16, 12:25 AM0.84
Oct 16, 12:20 AM0.84
Oct 16, 12:15 AM0.83
Oct 16, 12:10 AM0.83
Oct 16, 12:05 AM0.83
Oct 16, 12:00 AM0.84
Oct 15, 11:55 PM0.84
Oct 15, 11:50 PM0.84
Oct 15, 11:45 PM0.83
Oct 15, 11:40 PM0.83
Oct 15, 11:35 PM0.84
Oct 15, 11:30 PM0.84
Oct 15, 11:25 PM0.83
Oct 15, 11:20 PM0.84
Oct 15, 11:15 PM0.84
Oct 15, 11:10 PM0.84
Oct 15, 11:05 PM0.84
Oct 15, 11:00 PM0.83
Oct 15, 10:55 PM0.84
Oct 15, 10:50 PM0.84
Oct 15, 10:45 PM0.84
Oct 15, 10:40 PM0.84
Oct 15, 10:35 PM0.83
Oct 15, 10:30 PM0.84
Oct 15, 10:25 PM0.84
Oct 15, 10:20 PM0.84
Oct 15, 10:15 PM0.84
Oct 15, 10:10 PM0.84
Oct 15, 10:05 PM0.84
Oct 15, 10:00 PM0.84
Oct 15, 9:55 PM0.84
Oct 15, 9:50 PM0.84
Oct 15, 9:45 PM0.84
Oct 15, 9:40 PM0.84
Oct 15, 9:35 PM0.84
Oct 15, 9:30 PM0.84
Oct 15, 9:25 PM0.84
Oct 15, 9:20 PM0.84
Oct 15, 9:15 PM0.84
Oct 15, 9:10 PM0.84
Oct 15, 9:05 PM0.84
Oct 15, 9:00 PM0.84
Oct 15, 8:55 PM0.84
Oct 15, 8:50 PM0.84
Oct 15, 8:45 PM0.84
Oct 15, 8:40 PM0.84
Oct 15, 8:35 PM0.84
Oct 15, 8:30 PM0.84
Oct 15, 8:25 PM0.84
Oct 15, 8:20 PM0.84
Oct 15, 8:15 PM0.84
Oct 15, 8:10 PM0.84
Oct 15, 8:05 PM0.84
Oct 15, 8:00 PM0.84
Oct 15, 7:55 PM0.84
Oct 15, 7:50 PM0.84
Oct 15, 7:45 PM0.84
Oct 15, 7:40 PM0.84
Oct 15, 7:35 PM0.84
Oct 15, 7:30 PM0.84
Oct 15, 7:25 PM0.84
Oct 15, 7:20 PM0.84
Oct 15, 7:15 PM0.84
Oct 15, 7:10 PM0.84
Oct 15, 7:05 PM0.84
Oct 15, 7:00 PM0.84
Oct 15, 6:55 PM0.84
Oct 15, 6:50 PM0.84
Oct 15, 6:45 PM0.84
Oct 15, 6:40 PM0.84
Oct 15, 6:35 PM0.84
Oct 15, 6:30 PM0.84
Oct 15, 6:25 PM0.84
Oct 15, 6:20 PM0.84
Oct 15, 6:15 PM0.84
Oct 15, 6:10 PM0.84
Oct 15, 6:05 PM0.84
Oct 15, 6:00 PM0.84
Oct 15, 5:55 PM0.84
Oct 15, 5:50 PM0.84
Oct 15, 5:45 PM0.84
Oct 15, 5:40 PM0.84
Oct 15, 5:35 PM0.84
Oct 15, 5:30 PM0.84
Oct 15, 5:25 PM0.84
Oct 15, 5:20 PM0.84
Oct 15, 5:15 PM0.84
Oct 15, 5:10 PM0.84
Oct 15, 5:05 PM0.84
Oct 15, 5:00 PM0.84
Oct 15, 4:55 PM0.84
Oct 15, 4:50 PM0.84
Oct 15, 4:45 PM0.84
Oct 15, 4:40 PM0.84
Oct 15, 4:35 PM0.84
Oct 15, 4:30 PM0.84
Oct 15, 4:25 PM0.84
Oct 15, 4:20 PM0.84
Oct 15, 4:15 PM0.84
Oct 15, 4:10 PM0.84
Oct 15, 4:05 PM0.84
Oct 15, 4:00 PM0.84
Oct 15, 3:55 PM0.84
Oct 15, 3:50 PM0.84
Oct 15, 3:45 PM0.84
Oct 15, 3:40 PM0.84
Oct 15, 3:35 PM0.84
Oct 15, 3:30 PM0.84
Oct 15, 3:25 PM0.84
Oct 15, 3:20 PM0.84
Oct 15, 3:15 PM0.84
Oct 15, 3:10 PM0.84
Oct 15, 3:05 PM0.84
Oct 15, 3:00 PM0.84
Oct 15, 2:55 PM0.84
Oct 15, 2:50 PM0.84
Oct 15, 2:45 PM0.84
Oct 15, 2:40 PM0.85
Oct 15, 2:35 PM0.85
Oct 15, 2:30 PM0.85
Oct 15, 2:25 PM0.84
Oct 15, 2:20 PM0.84
Oct 15, 2:15 PM0.84
Oct 15, 2:10 PM0.84
Oct 15, 2:05 PM0.85
Oct 15, 2:00 PM0.84
Oct 15, 1:55 PM0.85
Oct 15, 1:50 PM0.84
Oct 15, 1:45 PM0.85
Oct 15, 1:40 PM0.85
Oct 15, 1:35 PM0.85
Oct 15, 1:30 PM0.85
Oct 15, 1:25 PM0.84
Oct 15, 1:20 PM0.85
Oct 15, 1:15 PM0.85
Oct 15, 1:10 PM0.85
Oct 15, 1:05 PM0.85
Oct 15, 1:00 PM0.85
Oct 15, 12:55 PM0.85
Oct 15, 12:50 PM0.85
Oct 15, 12:45 PM0.85
Oct 15, 12:40 PM0.85
Oct 15, 12:35 PM0.85
Oct 15, 12:30 PM0.85
Oct 15, 12:25 PM0.85
Oct 15, 12:20 PM0.85
Oct 15, 12:15 PM0.85
Oct 15, 12:10 PM0.85
Oct 15, 12:05 PM0.85
Oct 15, 12:00 PM0.85
Oct 15, 11:55 AM0.85
Oct 15, 11:50 AM0.85
Oct 15, 11:45 AM0.85
Oct 15, 11:40 AM0.85
Oct 15, 11:35 AM0.85
Oct 15, 11:30 AM0.85
Oct 15, 11:25 AM0.85
Oct 15, 11:20 AM0.85
Oct 15, 11:15 AM0.85
Oct 15, 11:10 AM0.85
Oct 15, 11:05 AM0.85
Oct 15, 11:00 AM0.85
Oct 15, 10:55 AM0.85
Oct 15, 10:50 AM0.85
Oct 15, 10:45 AM0.85
Oct 15, 10:40 AM0.85
Oct 15, 10:35 AM0.85
Oct 15, 10:30 AM0.85
Oct 15, 10:25 AM0.85
Oct 15, 10:20 AM0.85
Oct 15, 10:15 AM0.85
Oct 15, 10:10 AM0.85
Oct 15, 10:05 AM0.85
Oct 15, 10:00 AM0.85
Oct 15, 9:55 AM0.85
Oct 15, 9:50 AM0.85
Oct 15, 9:45 AM0.85
Oct 15, 9:40 AM0.85
Oct 15, 9:35 AM0.85
Oct 15, 9:30 AM0.85
Oct 15, 9:25 AM0.85
Oct 15, 9:20 AM0.85
Oct 15, 9:15 AM0.85
Oct 15, 9:10 AM0.85
Oct 15, 9:05 AM0.85
Oct 15, 9:00 AM0.85
Oct 15, 8:55 AM0.85
Oct 15, 8:50 AM0.85
Oct 15, 8:45 AM0.85
Oct 15, 8:40 AM0.85
Oct 15, 8:35 AM0.85
Oct 15, 8:30 AM0.86
Oct 15, 8:25 AM0.85
Oct 15, 8:20 AM0.85
Oct 15, 8:15 AM0.85
Oct 15, 8:10 AM0.85
Oct 15, 8:05 AM0.85
Oct 15, 8:00 AM0.85
Oct 15, 7:55 AM0.86
Oct 15, 7:50 AM0.85
Oct 15, 7:45 AM0.86
Oct 15, 7:40 AM0.86
Oct 15, 7:35 AM0.86
Oct 15, 7:30 AM0.86
Oct 15, 7:25 AM0.86
Oct 15, 7:20 AM0.86
Oct 15, 7:15 AM0.86
Oct 15, 7:10 AM0.86
Oct 15, 7:05 AM0.86
Oct 15, 7:00 AM0.86
Oct 15, 6:55 AM0.86
Oct 15, 6:50 AM0.86
Oct 15, 6:45 AM0.86
Oct 15, 6:40 AM0.86
Oct 15, 6:35 AM0.86
Oct 15, 6:30 AM0.86
Oct 15, 6:25 AM0.86
Oct 15, 6:20 AM0.86
Oct 15, 6:15 AM0.86
Oct 15, 6:10 AM0.86
Oct 15, 6:05 AM0.86
Oct 15, 6:00 AM0.86
Oct 15, 5:55 AM0.86
Oct 15, 5:50 AM0.86
Oct 15, 5:45 AM0.86
Oct 15, 5:40 AM0.86
Oct 15, 5:35 AM0.86
Oct 15, 5:30 AM0.86
Oct 15, 5:25 AM0.86
Oct 15, 5:20 AM0.86
Oct 15, 5:15 AM0.86
Oct 15, 5:10 AM0.86
Oct 15, 5:05 AM0.86
Oct 15, 5:00 AM0.86
Oct 15, 4:55 AM0.86
Oct 15, 4:50 AM0.86
Oct 15, 4:45 AM0.86
Oct 15, 4:40 AM0.86
Oct 15, 4:35 AM0.86
Oct 15, 4:30 AM0.86
Oct 15, 4:25 AM0.86
Oct 15, 4:20 AM0.86
Oct 15, 4:15 AM0.86
Oct 15, 4:10 AM0.86
Oct 15, 4:05 AM0.86
Oct 15, 4:00 AM0.86
Oct 15, 3:55 AM0.86
Oct 15, 3:50 AM0.86
Oct 15, 3:45 AM0.86
Oct 15, 3:40 AM0.86
Oct 15, 3:35 AM0.86
Oct 15, 3:30 AM0.86
Oct 15, 3:25 AM0.86
Oct 15, 3:20 AM0.86
Oct 15, 3:15 AM0.86
Oct 15, 3:10 AM0.86
Oct 15, 3:05 AM0.86
Oct 15, 3:00 AM0.86
Oct 15, 2:55 AM0.86
Oct 15, 2:50 AM0.86
Oct 15, 2:45 AM0.86
Oct 15, 2:40 AM0.86
Oct 15, 2:35 AM0.87
Oct 15, 2:30 AM0.86
Oct 15, 2:25 AM0.86
Oct 15, 2:20 AM0.86
Oct 15, 2:15 AM0.86
Oct 15, 2:10 AM0.87
Oct 15, 2:05 AM0.87
Oct 15, 2:00 AM0.87
Oct 15, 1:55 AM0.87
Oct 15, 1:50 AM0.86
Oct 15, 1:45 AM0.86
Oct 15, 1:40 AM0.87
Oct 15, 1:35 AM0.87
Oct 15, 1:30 AM0.86
Oct 15, 1:25 AM0.87
Oct 15, 1:20 AM0.86
Oct 15, 1:15 AM0.87
Water level, 7 days at Gwynns Falls at Villa Nova: the water from 0.72 to 4.95 feet of stage, the latest 0.84 feet.WATER LEVEL, 7 DAYSFTHIGH 4.95 FT, OCT 11, 3:35 PM · LOW 0.72 FT, OCT 10, 10:35 PM0246Sat 10Sun 11Mon 12Tue 13Wed 14Thu 15Fri 160.84
Latest
0.84 ftOct 16, 12:35 AM
Highest
4.95 ftOct 11, 3:35 PM
Lowest
0.72 ftOct 10, 10:35 PM
Range
4.23 fthighest less lowest
Change
Rose 0.10 ftsince Oct 9, 1:15 AM
Readings
1,997
The readings these charts were drawn from, as a table
TimeStage ft
Oct 16, 12:35 AM0.84
Oct 15, 11:55 PM0.84
Oct 15, 10:55 PM0.84
Oct 15, 9:55 PM0.84
Oct 15, 8:55 PM0.84
Oct 15, 7:55 PM0.84
Oct 15, 6:55 PM0.84
Oct 15, 5:55 PM0.84
Oct 15, 4:55 PM0.84
Oct 15, 3:55 PM0.84
Oct 15, 2:55 PM0.84
Oct 15, 1:55 PM0.85
Oct 15, 12:55 PM0.85
Oct 15, 11:55 AM0.85
Oct 15, 10:55 AM0.85
Oct 15, 9:55 AM0.85
Oct 15, 8:55 AM0.85
Oct 15, 7:55 AM0.86
Oct 15, 6:55 AM0.86
Oct 15, 5:55 AM0.86
Oct 15, 4:55 AM0.86
Oct 15, 3:55 AM0.86
Oct 15, 2:55 AM0.86
Oct 15, 1:55 AM0.87
Oct 15, 12:55 AM0.87
Oct 14, 11:55 PM0.87
Oct 14, 10:55 PM0.87
Oct 14, 9:55 PM0.87
Oct 14, 8:55 PM0.88
Oct 14, 7:55 PM0.88
Oct 14, 6:55 PM0.88
Oct 14, 5:55 PM0.88
Oct 14, 4:55 PM0.89
Oct 14, 3:55 PM0.89
Oct 14, 2:55 PM0.89
Oct 14, 1:55 PM0.89
Oct 14, 12:55 PM0.89
Oct 14, 11:55 AM0.90
Oct 14, 10:55 AM0.90
Oct 14, 9:55 AM0.90
Oct 14, 8:55 AM0.91
Oct 14, 7:55 AM0.91
Oct 14, 6:55 AM0.91
Oct 14, 5:55 AM0.91
Oct 14, 4:55 AM0.92
Oct 14, 3:55 AM0.92
Oct 14, 2:55 AM0.93
Oct 14, 1:55 AM0.93
Oct 14, 12:55 AM0.94
Oct 13, 11:55 PM0.94
Oct 13, 10:55 PM0.95
Oct 13, 9:55 PM0.96
Oct 13, 8:55 PM0.96
Oct 13, 7:55 PM0.97
Oct 13, 6:55 PM0.97
Oct 13, 5:55 PM0.98
Oct 13, 4:55 PM0.98
Oct 13, 3:55 PM0.99
Oct 13, 2:55 PM1.00
Oct 13, 1:55 PM1.01
Oct 13, 12:55 PM1.02
Oct 13, 11:55 AM1.02
Oct 13, 10:55 AM1.03
Oct 13, 9:55 AM1.04
Oct 13, 8:55 AM1.05
Oct 13, 7:55 AM1.06
Oct 13, 6:55 AM1.07
Oct 13, 5:55 AM1.08
Oct 13, 4:55 AM1.10
Oct 13, 3:55 AM1.12
Oct 13, 2:55 AM1.13
Oct 13, 1:55 AM1.15
Oct 13, 12:55 AM1.17
Oct 12, 11:55 PM1.19
Oct 12, 10:55 PM1.21
Oct 12, 9:55 PM1.23
Oct 12, 8:55 PM1.26
Oct 12, 7:55 PM1.30
Oct 12, 6:55 PM1.33
Oct 12, 5:55 PM1.38
Oct 12, 4:55 PM1.43
Oct 12, 3:55 PM1.49
Oct 12, 2:55 PM1.57
Oct 12, 1:55 PM1.66
Oct 12, 12:55 PM1.76
Oct 12, 11:55 AM1.87
Oct 12, 10:55 AM2.01
Oct 12, 9:55 AM2.15
Oct 12, 8:55 AM2.27
Oct 12, 7:55 AM2.40
Oct 12, 6:55 AM2.62
Oct 12, 5:55 AM2.81
Oct 12, 4:55 AM2.98
Oct 12, 3:55 AM2.94
Oct 12, 2:55 AM2.73
Oct 12, 1:55 AM2.89
Oct 12, 12:55 AM2.30
Oct 11, 11:55 PM2.26
Oct 11, 10:55 PM2.44
Oct 11, 9:55 PM2.69
Oct 11, 8:55 PM2.95
Oct 11, 7:55 PM3.31
Oct 11, 6:55 PM3.67
Oct 11, 5:55 PM4.05
Oct 11, 4:55 PM4.51
Oct 11, 3:55 PM4.87
Oct 11, 2:55 PM4.79
Oct 11, 1:55 PM4.22
Oct 11, 12:55 PM3.41
Oct 11, 11:55 AM2.86
Oct 11, 10:55 AM2.35
Oct 11, 9:55 AM1.79
Oct 11, 8:55 AM1.12
Oct 11, 7:55 AM0.92
Oct 11, 6:55 AM0.75
Oct 11, 5:55 AM0.73
Oct 11, 4:55 AM0.73
Oct 11, 3:55 AM0.73
Oct 11, 2:55 AM0.73
Oct 11, 1:55 AM0.73
Oct 11, 12:55 AM0.73
Oct 10, 11:55 PM0.73
Oct 10, 10:55 PM0.73
Oct 10, 9:55 PM0.73
Oct 10, 8:55 PM0.73
Oct 10, 7:55 PM0.73
Oct 10, 6:55 PM0.73
Oct 10, 5:55 PM0.73
Oct 10, 4:55 PM0.73
Oct 10, 3:55 PM0.73
Oct 10, 2:55 PM0.73
Oct 10, 1:55 PM0.73
Oct 10, 12:55 PM0.73
Oct 10, 11:55 AM0.73
Oct 10, 10:55 AM0.73
Oct 10, 9:55 AM0.73
Oct 10, 8:55 AM0.73
Oct 10, 7:55 AM0.73
Oct 10, 6:55 AM0.73
Oct 10, 5:55 AM0.73
Oct 10, 4:55 AM0.73
Oct 10, 3:55 AM0.73
Oct 10, 2:55 AM0.73
Oct 10, 1:55 AM0.73
Oct 10, 12:55 AM0.73
Oct 9, 11:55 PM0.73
Oct 9, 10:55 PM0.73
Oct 9, 9:55 PM0.73
Oct 9, 8:55 PM0.73
Oct 9, 7:55 PM0.73
Oct 9, 6:55 PM0.73
Oct 9, 5:55 PM0.74
Oct 9, 4:55 PM0.73
Oct 9, 3:55 PM0.74
Oct 9, 2:55 PM0.73
Oct 9, 1:55 PM0.73
Oct 9, 12:35 PM0.73
Oct 9, 11:55 AM0.73
Oct 9, 10:55 AM0.73
Oct 9, 9:55 AM0.74
Oct 9, 8:55 AM0.74
Oct 9, 7:55 AM0.74
Oct 9, 6:55 AM0.74
Oct 9, 5:55 AM0.74
Oct 9, 4:55 AM0.74
Oct 9, 3:55 AM0.74
Oct 9, 2:55 AM0.74
Oct 9, 1:55 AM0.74
Water level, 30 days at Gwynns Falls at Villa Nova: the water from 0.70 to 4.95 feet of stage, the latest 0.84 feet.WATER LEVEL, 30 DAYSFTHIGH 4.95 FT, OCT 11, 3:35 PM · LOW 0.70 FT, SEP 16, 1:15 AM0246Sep 16Sep 21Sep 26Oct 1Oct 6Oct 110.84
Latest
0.84 ftOct 16, 12:35 AM
Highest
4.95 ftOct 11, 3:35 PM
Lowest
0.70 ftSep 16, 1:15 AM
Range
4.25 fthighest less lowest
Change
Rose 0.14 ftsince Sep 16, 1:15 AM
Readings
8,525
The readings these charts were drawn from, as a table
DayHigh ftLow ftAverage ftLast ftReadings
Oct 160.840.830.840.848
Oct 150.870.830.850.84288
Oct 140.940.870.900.87288
Oct 131.190.941.040.94288
Oct 122.981.191.971.19288
Oct 114.950.722.362.26288
Oct 100.730.720.730.73288
Oct 90.740.730.740.73276
Oct 80.760.740.750.74288
Oct 70.760.750.750.75264
Oct 60.760.740.750.75288
Oct 50.800.760.780.76288
Oct 40.790.760.770.79288
Oct 30.770.760.770.76288
Oct 20.800.770.780.77288
Oct 10.800.780.790.79288
Sep 300.810.800.810.80276
Sep 290.870.810.830.81288
Sep 281.150.860.940.86288
Sep 271.230.851.011.15288
Sep 260.880.780.800.88288
Sep 250.830.790.810.80288
Sep 240.960.830.880.83288
Sep 231.950.961.290.96288
Sep 222.000.851.671.95288
Sep 210.910.790.830.85288
Sep 200.980.700.840.91256
Sep 190.730.710.720.71272
Sep 180.770.720.750.73288
Sep 170.770.700.720.72288
Sep 160.710.700.700.71261

How it reports

Schedule
every houron the hour's :35
Reports received, 24 hours
24 of 24100% of its schedule, 25 reports in all
Reports received, 7 days
167 of 16899.4% of its schedule, 168 reports in all
Longest silence, 7 days
2 hoursfrom Oct 9, 12:35 PM
Latest report
Oct 15, 11:35 PMlocal time
Time to reach Storm Station
16 min9 in 10 within 18 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 score97.6of 100

Maryland median
89.0the median score of 736 stations
Scoring higher
121stations in Maryland
Sharing its score
8ranks 122 to 129
Points deducted
2.41.2 arrival, 0.8 forecast check, 0.2 reports received, 0.2 accuracy
Counted at the median
Accuracy, instrument checks, forecast checknot measured at this station; Maryland median 99.0, 100.0, 92.1
Next above
FMErank 122; ahead on reports received 99.6% against 99.4%
Next below
PRNM2rank 124; behind on reports received 99.4% against 97.6%

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 pointsMaryland median 82.1167 of 168 scheduled reports received in 7 days
  2. Arrivalweight 1088.08.8 of 10 pointsMaryland median 94.0half its reports arrived within 16 min
  3. Continuityweight 10100.010.0 of 10 pointsMaryland median 100.0longest silence 2 h, on a schedule of one report every 60 min
  4. Accuracyweight 20-19.8 of 20 points, at the medianMaryland median 99.0-
  5. Instrument checksweight 15-15.0 of 15 points, at the medianMaryland median 100.0-
  6. Forecast checkweight 10-9.2 of 10 points, at the medianMaryland median 92.1-

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 Gwynns Falls at Villa Nova

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.