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Live/Water/Pennsylvania/Safe Harbor Dam

Safe Harbor Dam

A water gauge in Lancaster County, Pennsylvania. Its stage was 4.45 ft as of Oct 13, 8:00 AM EDT.

Gauge SAHP1Lancaster County, PennsylvaniaEvery gauge in Pennsylvania

Stage now
4.45 ftreported Oct 13, 8:00 AM EDT
24 hour change
Fell 2.37 ftsince Oct 12, 8:00 AM
Elevation
230 ftabove sea level
County
Lancaster County
Position
39.9244° N, 76.3911° W
Record since
2010

Water level

Safe Harbor Dam

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, 7 days at Safe Harbor Dam: the water from 3.51 to 6.82 feet of stage, the latest 4.45 feet.WATER LEVEL, 7 DAYSFTHIGH 6.82 FT, OCT 12, 8:00 AM · LOW 3.51 FT, OCT 11, 8:00 AM345678Fri 9Sat 10Sun 11Mon 12Tue 13Wed 14Thu 154.45
Latest
4.45 ftOct 13, 8:00 AM
Highest
6.82 ftOct 12, 8:00 AM
Lowest
3.51 ftOct 11, 8:00 AM
Range
3.31 fthighest less lowest
Change
Rose 0.90 ftsince Oct 9, 8:00 AM
Readings
5
The readings these charts were drawn from, as a table
TimeStage ft
Oct 13, 8:00 AM4.45
Oct 12, 8:00 AM6.82
Oct 11, 8:00 AM3.51
Oct 10, 8:00 AM3.53
Oct 9, 8:00 AM3.55
Water level, 30 days at Safe Harbor Dam: the water from 3.51 to 6.82 feet of stage, the latest 4.45 feet.WATER LEVEL, 30 DAYSFTHIGH 6.82 FT, OCT 12, 8:00 AM · LOW 3.51 FT, OCT 11, 8:00 AM345678Sep 16Sep 21Sep 26Oct 1Oct 6Oct 114.45
Latest
4.45 ftOct 13, 8:00 AM
Highest
6.82 ftOct 12, 8:00 AM
Lowest
3.51 ftOct 11, 8:00 AM
Range
3.31 fthighest less lowest
Change
Rose 0.76 ftsince Sep 16, 6:00 AM
Readings
25
The readings these charts were drawn from, as a table
DayHigh ftLow ftAverage ftLast ftReadings
Oct 134.454.454.454.451
Oct 126.826.826.826.821
Oct 113.513.513.513.511
Oct 103.533.533.533.531
Oct 93.553.553.553.551
Oct 73.593.593.593.591
Oct 43.693.693.693.691
Oct 33.763.763.763.761
Oct 23.773.773.773.771
Oct 13.823.823.823.821
Sep 303.913.913.913.911
Sep 294.164.164.164.161
Sep 284.234.234.234.231
Sep 273.873.873.873.871
Sep 263.803.803.803.801
Sep 253.893.893.893.891
Sep 244.034.034.034.031
Sep 233.703.703.703.701
Sep 224.304.304.304.301
Sep 215.745.745.745.741
Sep 203.683.683.683.681
Sep 193.693.693.693.691
Sep 183.803.803.803.801
Sep 173.643.643.643.641
Sep 163.693.693.693.691

How it reports

Reports received, 7 days
7
Longest silence, 7 days
24 hoursfrom Oct 9, 8:00 AM
Latest report
Oct 15, 8:00 AMlocal time
Time to reach Storm Station
20 min

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

Ranking Statistics

247 score99.3of 100

Pennsylvania median
94.3the median score of 1,383 stations
Scoring higher
9stations in Pennsylvania
Sharing its score
208ranks 10 to 217
Points deducted
0.70.7 forecast check
Counted at the median
Accuracy, instrument checks, forecast checknot measured at this station; Pennsylvania median 100.0, 100.0, 92.9
Next above
TSVP1rank 16; ahead on median arrival 18 min 19 s against 20 min 20 s
Next below
ACMP1rank 24; behind on median arrival 20 min 20 s against 20 min 51 s
Sharing its rank
6other 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 35100.035.0 of 35 pointsPennsylvania median 95.87 of 7 scheduled reports received in 7 days
  2. Arrivalweight 10100.010.0 of 10 pointsPennsylvania median 94.8half its reports arrived within 20 min
  3. Continuityweight 10100.010.0 of 10 pointsPennsylvania median 100.0longest silence 24 h, on a schedule of one report every 24 h
  4. Accuracyweight 20-20.0 of 20 points, at the medianPennsylvania median 100.0-
  5. Instrument checksweight 15-15.0 of 15 points, at the medianPennsylvania median 100.0-
  6. Forecast checkweight 10-9.3 of 10 points, at the medianPennsylvania median 92.9-

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 2.4 h, none at 24 h
Continuity
Full marks for a longest silence of 3 reports or less (72 h), none for 72 (1728 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 Safe Harbor Dam

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.