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Live/Water/Maryland/Beaverdam Run at Cockeysville

Beaverdam Run at Cockeysville

A gauge on the Beaverdam Run in Baltimore County, Maryland. Its stage was 2.91 ft as of Oct 16, 12:25 AM EDT.

Gauge CKYM2Baltimore County, MarylandEvery gauge in Maryland

Stage now
2.91 ftreported Oct 16, 12:25 AM EDT
24 hour change
No changesince Oct 15, 12:25 AM
Elevation
256 ftabove sea level
County
Baltimore County
Position
39.4856° N, 76.6458° W
Record since
2011

Water level

Beaverdam Run at Cockeysville

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 Beaverdam Run at Cockeysville: the water from 2.81 to 2.96 feet of stage, the latest 2.91 feet.WATER LEVEL, 24 HOURSFTHIGH 2.96 FT, OCT 15, 5:50 AM · LOW 2.81 FT, OCT 15, 6:30 PM2.802.852.902.953.003 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 162.91
Latest
2.91 ftOct 16, 12:25 AM
Highest
2.96 ftOct 15, 5:50 AM
Lowest
2.81 ftOct 15, 6:30 PM
Range
0.15 fthighest less lowest
Change
Fell 0.01 ftsince Oct 15, 1:15 AM
Readings
279
The readings these charts were drawn from, as a table
TimeStage ft
Oct 16, 12:25 AM2.91
Oct 16, 12:20 AM2.91
Oct 16, 12:15 AM2.91
Oct 16, 12:10 AM2.91
Oct 16, 12:05 AM2.91
Oct 16, 12:00 AM2.91
Oct 15, 11:55 PM2.91
Oct 15, 11:50 PM2.91
Oct 15, 11:45 PM2.91
Oct 15, 11:40 PM2.92
Oct 15, 11:35 PM2.92
Oct 15, 11:30 PM2.92
Oct 15, 11:25 PM2.92
Oct 15, 11:20 PM2.92
Oct 15, 11:15 PM2.92
Oct 15, 11:10 PM2.92
Oct 15, 11:05 PM2.92
Oct 15, 11:00 PM2.92
Oct 15, 10:55 PM2.92
Oct 15, 10:50 PM2.92
Oct 15, 10:45 PM2.92
Oct 15, 10:40 PM2.92
Oct 15, 10:35 PM2.91
Oct 15, 10:30 PM2.91
Oct 15, 10:25 PM2.91
Oct 15, 10:20 PM2.91
Oct 15, 10:15 PM2.91
Oct 15, 10:10 PM2.91
Oct 15, 10:05 PM2.90
Oct 15, 10:00 PM2.90
Oct 15, 9:55 PM2.90
Oct 15, 9:50 PM2.89
Oct 15, 9:45 PM2.89
Oct 15, 9:40 PM2.89
Oct 15, 9:35 PM2.88
Oct 15, 9:30 PM2.88
Oct 15, 9:25 PM2.88
Oct 15, 9:20 PM2.87
Oct 15, 9:15 PM2.87
Oct 15, 9:10 PM2.87
Oct 15, 9:05 PM2.86
Oct 15, 9:00 PM2.86
Oct 15, 8:55 PM2.86
Oct 15, 8:50 PM2.85
Oct 15, 8:45 PM2.85
Oct 15, 8:40 PM2.85
Oct 15, 8:35 PM2.84
Oct 15, 8:30 PM2.84
Oct 15, 8:25 PM2.84
Oct 15, 8:20 PM2.84
Oct 15, 8:15 PM2.84
Oct 15, 8:10 PM2.84
Oct 15, 8:05 PM2.83
Oct 15, 8:00 PM2.83
Oct 15, 7:55 PM2.83
Oct 15, 7:50 PM2.83
Oct 15, 7:45 PM2.83
Oct 15, 7:40 PM2.82
Oct 15, 7:35 PM2.82
Oct 15, 7:30 PM2.82
Oct 15, 7:25 PM2.82
Oct 15, 7:20 PM2.82
Oct 15, 7:15 PM2.82
Oct 15, 7:10 PM2.82
Oct 15, 7:05 PM2.82
Oct 15, 7:00 PM2.82
Oct 15, 6:55 PM2.81
Oct 15, 6:50 PM2.81
Oct 15, 6:45 PM2.81
Oct 15, 6:40 PM2.81
Oct 15, 6:35 PM2.81
Oct 15, 6:30 PM2.81
Oct 15, 6:25 PM2.82
Oct 15, 6:20 PM2.82
Oct 15, 6:15 PM2.82
Oct 15, 6:10 PM2.82
Oct 15, 6:05 PM2.82
Oct 15, 6:00 PM2.82
Oct 15, 5:55 PM2.82
Oct 15, 5:50 PM2.82
Oct 15, 5:45 PM2.82
Oct 15, 5:40 PM2.82
Oct 15, 5:35 PM2.82
Oct 15, 5:30 PM2.82
Oct 15, 5:25 PM2.82
Oct 15, 5:20 PM2.82
Oct 15, 5:15 PM2.82
Oct 15, 5:10 PM2.83
Oct 15, 5:05 PM2.83
Oct 15, 5:00 PM2.83
Oct 15, 4:55 PM2.83
Oct 15, 4:50 PM2.83
Oct 15, 4:45 PM2.83
Oct 15, 4:40 PM2.84
Oct 15, 4:35 PM2.84
Oct 15, 4:30 PM2.84
Oct 15, 4:25 PM2.84
Oct 15, 4:20 PM2.85
Oct 15, 4:15 PM2.85
Oct 15, 4:10 PM2.85
Oct 15, 4:05 PM2.85
Oct 15, 4:00 PM2.85
Oct 15, 3:55 PM2.86
Oct 15, 3:50 PM2.86
Oct 15, 3:45 PM2.86
Oct 15, 3:40 PM2.86
Oct 15, 3:35 PM2.87
Oct 15, 3:30 PM2.87
Oct 15, 3:25 PM2.87
Oct 15, 3:20 PM2.87
Oct 15, 3:15 PM2.88
Oct 15, 3:10 PM2.88
Oct 15, 3:05 PM2.88
Oct 15, 3:00 PM2.88
Oct 15, 2:55 PM2.89
Oct 15, 2:50 PM2.89
Oct 15, 2:45 PM2.89
Oct 15, 2:40 PM2.89
Oct 15, 2:35 PM2.89
Oct 15, 2:30 PM2.90
Oct 15, 2:25 PM2.90
Oct 15, 2:20 PM2.90
Oct 15, 2:15 PM2.91
Oct 15, 2:10 PM2.91
Oct 15, 2:05 PM2.91
Oct 15, 2:00 PM2.91
Oct 15, 1:55 PM2.91
Oct 15, 1:50 PM2.92
Oct 15, 1:45 PM2.92
Oct 15, 1:40 PM2.92
Oct 15, 1:35 PM2.92
Oct 15, 1:30 PM2.92
Oct 15, 1:25 PM2.92
Oct 15, 1:20 PM2.92
Oct 15, 1:15 PM2.93
Oct 15, 1:10 PM2.93
Oct 15, 1:05 PM2.93
Oct 15, 1:00 PM2.93
Oct 15, 12:55 PM2.93
Oct 15, 12:50 PM2.93
Oct 15, 12:45 PM2.93
Oct 15, 12:40 PM2.93
Oct 15, 12:35 PM2.93
Oct 15, 12:30 PM2.93
Oct 15, 12:25 PM2.93
Oct 15, 12:20 PM2.94
Oct 15, 12:15 PM2.94
Oct 15, 12:10 PM2.94
Oct 15, 12:05 PM2.94
Oct 15, 12:00 PM2.94
Oct 15, 11:55 AM2.94
Oct 15, 11:50 AM2.94
Oct 15, 11:45 AM2.94
Oct 15, 11:40 AM2.94
Oct 15, 11:35 AM2.94
Oct 15, 11:30 AM2.94
Oct 15, 11:25 AM2.94
Oct 15, 11:20 AM2.94
Oct 15, 11:15 AM2.94
Oct 15, 11:10 AM2.95
Oct 15, 11:05 AM2.94
Oct 15, 11:00 AM2.95
Oct 15, 10:55 AM2.95
Oct 15, 10:50 AM2.95
Oct 15, 10:45 AM2.95
Oct 15, 10:40 AM2.95
Oct 15, 10:35 AM2.95
Oct 15, 10:30 AM2.95
Oct 15, 10:25 AM2.95
Oct 15, 10:20 AM2.95
Oct 15, 10:15 AM2.95
Oct 15, 10:10 AM2.95
Oct 15, 10:05 AM2.95
Oct 15, 10:00 AM2.95
Oct 15, 9:55 AM2.95
Oct 15, 9:50 AM2.95
Oct 15, 9:45 AM2.95
Oct 15, 9:40 AM2.96
Oct 15, 9:35 AM2.96
Oct 15, 9:30 AM2.96
Oct 15, 9:25 AM2.96
Oct 15, 9:20 AM2.96
Oct 15, 9:15 AM2.96
Oct 15, 9:10 AM2.96
Oct 15, 9:05 AM2.96
Oct 15, 9:00 AM2.96
Oct 15, 8:55 AM2.96
Oct 15, 8:50 AM2.96
Oct 15, 8:45 AM2.96
Oct 15, 8:40 AM2.96
Oct 15, 8:35 AM2.96
Oct 15, 8:30 AM2.96
Oct 15, 8:25 AM2.96
Oct 15, 8:20 AM2.96
Oct 15, 8:15 AM2.96
Oct 15, 8:10 AM2.96
Oct 15, 8:05 AM2.96
Oct 15, 8:00 AM2.96
Oct 15, 7:55 AM2.96
Oct 15, 7:50 AM2.96
Oct 15, 7:45 AM2.96
Oct 15, 7:40 AM2.96
Oct 15, 7:35 AM2.96
Oct 15, 7:30 AM2.96
Oct 15, 7:25 AM2.96
Oct 15, 7:20 AM2.96
Oct 15, 7:15 AM2.96
Oct 15, 7:10 AM2.96
Oct 15, 7:05 AM2.96
Oct 15, 7:00 AM2.96
Oct 15, 6:55 AM2.96
Oct 15, 6:50 AM2.96
Oct 15, 6:45 AM2.96
Oct 15, 6:40 AM2.96
Oct 15, 6:35 AM2.96
Oct 15, 6:30 AM2.96
Oct 15, 6:25 AM2.96
Oct 15, 6:20 AM2.96
Oct 15, 6:15 AM2.96
Oct 15, 6:10 AM2.96
Oct 15, 6:05 AM2.96
Oct 15, 6:00 AM2.96
Oct 15, 5:55 AM2.96
Oct 15, 5:50 AM2.96
Oct 15, 5:45 AM2.95
Oct 15, 5:40 AM2.95
Oct 15, 5:35 AM2.95
Oct 15, 5:30 AM2.95
Oct 15, 5:25 AM2.95
Oct 15, 5:20 AM2.95
Oct 15, 5:15 AM2.95
Oct 15, 5:10 AM2.95
Oct 15, 5:05 AM2.95
Oct 15, 5:00 AM2.95
Oct 15, 4:55 AM2.95
Oct 15, 4:50 AM2.95
Oct 15, 4:45 AM2.95
Oct 15, 4:40 AM2.95
Oct 15, 4:35 AM2.95
Oct 15, 4:30 AM2.95
Oct 15, 4:25 AM2.95
Oct 15, 4:20 AM2.95
Oct 15, 4:15 AM2.95
Oct 15, 4:10 AM2.95
Oct 15, 4:05 AM2.95
Oct 15, 4:00 AM2.94
Oct 15, 3:55 AM2.94
Oct 15, 3:50 AM2.94
Oct 15, 3:45 AM2.94
Oct 15, 3:40 AM2.94
Oct 15, 3:35 AM2.94
Oct 15, 3:30 AM2.94
Oct 15, 3:25 AM2.94
Oct 15, 3:20 AM2.94
Oct 15, 3:15 AM2.94
Oct 15, 3:10 AM2.94
Oct 15, 3:05 AM2.94
Oct 15, 3:00 AM2.94
Oct 15, 2:55 AM2.94
Oct 15, 2:50 AM2.94
Oct 15, 2:45 AM2.94
Oct 15, 2:40 AM2.93
Oct 15, 2:35 AM2.93
Oct 15, 2:30 AM2.93
Oct 15, 2:25 AM2.93
Oct 15, 2:20 AM2.93
Oct 15, 2:15 AM2.93
Oct 15, 2:10 AM2.93
Oct 15, 2:05 AM2.93
Oct 15, 2:00 AM2.93
Oct 15, 1:55 AM2.93
Oct 15, 1:50 AM2.93
Oct 15, 1:45 AM2.93
Oct 15, 1:40 AM2.93
Oct 15, 1:35 AM2.92
Oct 15, 1:30 AM2.93
Oct 15, 1:25 AM2.92
Oct 15, 1:20 AM2.92
Oct 15, 1:15 AM2.92
Water level, 7 days at Beaverdam Run at Cockeysville: the water from 2.22 to 6.56 feet of stage, the latest 2.91 feet.WATER LEVEL, 7 DAYSFTHIGH 6.56 FT, OCT 11, 11:45 AM · LOW 2.22 FT, OCT 9, 4:05 PM2468Sat 10Sun 11Mon 12Tue 13Wed 14Thu 15Fri 162.91
Latest
2.91 ftOct 16, 12:25 AM
Highest
6.56 ftOct 11, 11:45 AM
Lowest
2.22 ftOct 9, 4:05 PM
Range
4.34 fthighest less lowest
Change
Rose 0.62 ftsince Oct 9, 1:15 AM
Readings
1,995
The readings these charts were drawn from, as a table
TimeStage ft
Oct 16, 12:25 AM2.91
Oct 15, 11:55 PM2.91
Oct 15, 10:55 PM2.92
Oct 15, 9:55 PM2.90
Oct 15, 8:55 PM2.86
Oct 15, 7:55 PM2.83
Oct 15, 6:55 PM2.81
Oct 15, 5:55 PM2.82
Oct 15, 4:55 PM2.83
Oct 15, 3:55 PM2.86
Oct 15, 2:55 PM2.89
Oct 15, 1:55 PM2.91
Oct 15, 12:55 PM2.93
Oct 15, 11:55 AM2.94
Oct 15, 10:55 AM2.95
Oct 15, 9:55 AM2.95
Oct 15, 8:55 AM2.96
Oct 15, 7:55 AM2.96
Oct 15, 6:55 AM2.96
Oct 15, 5:55 AM2.96
Oct 15, 4:55 AM2.95
Oct 15, 3:55 AM2.94
Oct 15, 2:55 AM2.94
Oct 15, 1:55 AM2.93
Oct 15, 12:55 AM2.92
Oct 14, 11:55 PM2.90
Oct 14, 10:55 PM2.89
Oct 14, 9:55 PM2.89
Oct 14, 8:55 PM2.89
Oct 14, 7:55 PM2.88
Oct 14, 6:55 PM2.86
Oct 14, 5:55 PM2.84
Oct 14, 4:55 PM2.84
Oct 14, 3:55 PM2.85
Oct 14, 2:55 PM2.88
Oct 14, 1:55 PM2.90
Oct 14, 12:55 PM2.90
Oct 14, 11:55 AM2.91
Oct 14, 10:55 AM2.91
Oct 14, 9:55 AM2.92
Oct 14, 8:55 AM2.93
Oct 14, 7:55 AM2.95
Oct 14, 6:55 AM2.95
Oct 14, 5:55 AM2.95
Oct 14, 4:55 AM2.95
Oct 14, 3:55 AM2.95
Oct 14, 2:55 AM2.95
Oct 14, 1:55 AM2.95
Oct 14, 12:55 AM2.96
Oct 13, 11:55 PM2.96
Oct 13, 10:55 PM2.97
Oct 13, 9:55 PM2.98
Oct 13, 8:55 PM2.98
Oct 13, 7:55 PM2.97
Oct 13, 6:55 PM2.96
Oct 13, 5:55 PM2.96
Oct 13, 4:55 PM2.96
Oct 13, 3:55 PM2.97
Oct 13, 2:55 PM2.99
Oct 13, 1:55 PM3.00
Oct 13, 12:55 PM3.01
Oct 13, 11:55 AM3.01
Oct 13, 10:55 AM3.02
Oct 13, 9:55 AM3.04
Oct 13, 8:55 AM3.06
Oct 13, 7:55 AM3.09
Oct 13, 6:55 AM3.11
Oct 13, 5:55 AM3.12
Oct 13, 4:55 AM3.14
Oct 13, 3:55 AM3.16
Oct 13, 2:55 AM3.17
Oct 13, 1:55 AM3.19
Oct 13, 12:55 AM3.21
Oct 12, 11:55 PM3.23
Oct 12, 10:55 PM3.26
Oct 12, 9:55 PM3.28
Oct 12, 8:55 PM3.31
Oct 12, 7:55 PM3.35
Oct 12, 6:55 PM3.39
Oct 12, 5:55 PM3.45
Oct 12, 4:55 PM3.52
Oct 12, 3:55 PM3.59
Oct 12, 2:55 PM3.65
Oct 12, 1:55 PM3.69
Oct 12, 12:55 PM3.75
Oct 12, 11:55 AM3.89
Oct 12, 10:55 AM4.06
Oct 12, 9:55 AM4.25
Oct 12, 8:55 AM4.50
Oct 12, 7:55 AM4.79
Oct 12, 6:55 AM5.11
Oct 12, 5:55 AM5.34
Oct 12, 4:55 AM5.40
Oct 12, 3:55 AM5.20
Oct 12, 2:55 AM5.61
Oct 12, 1:55 AM5.67
Oct 12, 12:55 AM4.58
Oct 11, 11:55 PM4.04
Oct 11, 10:55 PM4.20
Oct 11, 9:55 PM4.39
Oct 11, 8:55 PM4.63
Oct 11, 7:55 PM4.89
Oct 11, 6:55 PM5.21
Oct 11, 5:55 PM5.59
Oct 11, 4:55 PM5.97
Oct 11, 3:55 PM6.30
Oct 11, 2:55 PM6.43
Oct 11, 1:55 PM6.40
Oct 11, 12:55 PM6.51
Oct 11, 11:55 AM6.56
Oct 11, 10:55 AM5.98
Oct 11, 9:55 AM4.99
Oct 11, 8:55 AM4.14
Oct 11, 7:55 AM2.78
Oct 11, 6:55 AM2.43
Oct 11, 5:55 AM2.33
Oct 11, 4:55 AM2.33
Oct 11, 3:55 AM2.32
Oct 11, 2:55 AM2.32
Oct 11, 1:55 AM2.32
Oct 11, 12:55 AM2.32
Oct 10, 11:55 PM2.32
Oct 10, 10:55 PM2.32
Oct 10, 9:55 PM2.32
Oct 10, 8:55 PM2.31
Oct 10, 7:55 PM2.31
Oct 10, 6:55 PM2.31
Oct 10, 5:55 PM2.30
Oct 10, 4:55 PM2.31
Oct 10, 3:55 PM2.31
Oct 10, 2:55 PM2.31
Oct 10, 1:55 PM2.31
Oct 10, 12:55 PM2.31
Oct 10, 11:55 AM2.31
Oct 10, 10:25 AM2.31
Oct 10, 9:55 AM2.31
Oct 10, 8:55 AM2.31
Oct 10, 7:55 AM2.31
Oct 10, 6:55 AM2.31
Oct 10, 5:55 AM2.31
Oct 10, 4:55 AM2.31
Oct 10, 3:55 AM2.31
Oct 10, 2:55 AM2.31
Oct 10, 1:55 AM2.31
Oct 10, 12:55 AM2.30
Oct 9, 11:55 PM2.28
Oct 9, 10:55 PM2.25
Oct 9, 9:55 PM2.25
Oct 9, 8:55 PM2.24
Oct 9, 7:55 PM2.23
Oct 9, 6:55 PM2.23
Oct 9, 5:55 PM2.23
Oct 9, 4:55 PM2.23
Oct 9, 3:55 PM2.23
Oct 9, 2:55 PM2.24
Oct 9, 1:55 PM2.27
Oct 9, 12:55 PM2.29
Oct 9, 11:55 AM2.29
Oct 9, 10:55 AM2.29
Oct 9, 9:55 AM2.29
Oct 9, 8:55 AM2.30
Oct 9, 7:55 AM2.31
Oct 9, 6:55 AM2.30
Oct 9, 5:55 AM2.30
Oct 9, 4:55 AM2.30
Oct 9, 3:55 AM2.30
Oct 9, 2:55 AM2.30
Oct 9, 1:55 AM2.30
Water level, 30 days at Beaverdam Run at Cockeysville: the water from 1.95 to 6.56 feet of stage, the latest 2.91 feet.WATER LEVEL, 30 DAYSFTHIGH 6.56 FT, OCT 11, 11:45 AM · LOW 1.95 FT, SEP 16, 8:20 PM02468Sep 16Sep 21Sep 26Oct 1Oct 6Oct 112.91
Latest
2.91 ftOct 16, 12:25 AM
Highest
6.56 ftOct 11, 11:45 AM
Lowest
1.95 ftSep 16, 8:20 PM
Range
4.61 fthighest less lowest
Change
Rose 0.83 ftsince Sep 16, 1:15 AM
Readings
8,523
The readings these charts were drawn from, as a table
DayHigh ftLow ftAverage ftLast ftReadings
Oct 162.912.912.912.916
Oct 152.962.812.912.91288
Oct 144.492.842.912.90288
Oct 133.232.963.052.96288
Oct 125.713.234.183.23288
Oct 116.562.324.364.04288
Oct 102.322.282.312.32276
Oct 92.312.222.272.28288
Oct 82.372.242.302.28288
Oct 72.362.242.292.30276
Oct 62.302.192.242.25288
Oct 52.312.172.242.21288
Oct 42.312.262.292.31288
Oct 32.262.242.252.26288
Oct 22.262.152.202.24288
Oct 12.312.162.242.25288
Sep 302.372.222.292.27276
Sep 292.402.262.312.32288
Sep 282.582.312.422.31288
Sep 273.382.362.782.58288
Sep 262.662.292.382.43288
Sep 252.322.282.302.30288
Sep 242.402.262.312.31288
Sep 233.692.362.802.36288
Sep 224.242.413.673.70288
Sep 213.572.062.482.46276
Sep 203.682.142.473.02270
Sep 192.162.082.132.13282
Sep 182.181.992.102.08288
Sep 173.251.952.272.13264
Sep 162.091.952.021.95261

How it reports

Schedule
every houron the hour's :25
Reports received, 24 hours
24 of 24100% of its schedule
Reports received, 7 days
167 of 16899.4% of its schedule, 168 reports in all
Longest silence, 7 days
2 hoursfrom Oct 10, 10:25 AM
Latest report
Oct 15, 10:25 PMlocal time
Time to reach Storm Station
18 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 score97.0of 100

Maryland median
89.0the median score of 736 stations
Scoring higher
179stations in Maryland
Sharing its score
2ranks 180 to 181
Points deducted
3.01.6 arrival, 0.8 forecast check, 0.4 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
CVLM2rank 180; ahead on reports received 99.4% against 98.8%
Next below
SRPM2rank 182; behind on 247 score 97.0 against 96.9

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 3598.834.6 of 35 pointsMaryland median 82.1166 of 168 scheduled reports received in 7 days
  2. Arrivalweight 1084.38.4 of 10 pointsMaryland median 94.0half its reports arrived within 18 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 Beaverdam Run at Cockeysville

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.