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Tide Gauge Details - USA - Baltimore_MD

Device description

Name
USA - Baltimore_MD
Country
USA
Group
TD UNESCO
Lat/Lon
39.266998 / -76.578003

Last measured values

Time(UTC)
21 Jun 2026 12:54:00
Latency
4336
Level
0.31

Harmonics

Points count
1663833
First date
02 May 2011 22:15
Last date
25 Feb 2026 21:54

Click on following link to see data:

Harmonics Constatns
Comp # Period (day) Cos factor (m) Sin factor (m)
0 0.00000 3.69476E-1 0E+0
1 0.12877 3.14364E-5 4.27195E-4
2 0.12886 2.14446E-4 1.32956E-4
3 0.12938 7.75086E-4 -3.33137E-4
4 0.14707 1.62583E-4 -3.80928E-5
5 0.16841 4.71134E-5 -2.04266E-5
6 0.16857 2.22771E-4 1.21249E-4
7 0.17036 2.96724E-4 4.54168E-4
8 0.17052 3.65783E-4 -1.14556E-3
9 0.17251 -2.65694E-3 -4.48047E-4
10 0.17470 3.18063E-4 -2.13931E-4
11 0.19989 1.28561E-5 -2.69139E-4
12 0.20545 -1.16325E-3 -5.95127E-4
13 0.24966 -3.81426E-4 -2.0375E-5
14 0.25000 3.90926E-4 1.81668E-4
15 0.25395 6.02455E-4 -1.5856E-4
16 0.25431 -1.58879E-3 -1.83656E-3
17 0.25631 -3.87727E-5 2.165E-5
18 0.25667 2.46263E-4 5.06072E-4
19 0.25876 -5.86371E-3 5.55961E-3
20 0.26122 2.99099E-3 1.28068E-3
21 0.33303 -4.68906E-4 -4.01691E-4
22 0.34071 -1.95362E-3 4.26676E-3
23 0.34135 -2.92654E-3 6.66622E-4
24 0.34502 -4.22909E-4 -6.61464E-5
25 0.34943 1.91802E-3 3.84109E-3
26 0.48977 2.45414E-4 -3.13539E-4
27 0.49109 9.42689E-4 -3.70033E-4
28 0.49863 -6.22222E-3 1.98542E-3
29 0.49932 -2.69259E-4 -1.94202E-3
30 0.50000 2.23316E-2 3.62629E-3
31 0.50798 -5.99551E-3 -2.77271E-3
32 0.50924 -4.30686E-4 3.0069E-3
33 0.51606 1.02961E-3 -3.75772E-4
34 0.51679 -2.37442E-3 5.48306E-3
35 0.51753 2.55389E-2 -1.46464E-1
36 0.51826 7.30552E-5 6.2283E-3
37 0.52608 1.4298E-3 -5.86379E-3
38 0.52743 -3.28017E-2 2.82284E-3
39 0.53632 -2.33839E-3 -9.62542E-4
40 0.53772 1.75381E-3 3.70983E-3
41 0.54697 1.96945E-5 -2.16833E-4
42 0.54843 3.61048E-4 -2.381E-4
43 0.89909 1.76681E-4 4.42748E-4
44 0.92942 -4.47053E-4 -2.0757E-3
45 0.93417 -1.26455E-3 -1.49236E-3
46 0.96244 1.24231E-3 1.16521E-3
47 0.96696 1.80554E-4 -1.13806E-3
48 0.99185 1.98376E-4 -2.81228E-4
49 0.99455 -4.24445E-4 3.5424E-3
50 0.99727 6.03729E-2 -3.10581E-3
51 1.00000 -8.78787E-3 1.87852E-2
52 1.00275 1.96212E-2 3.7602E-3
53 1.00551 7.269E-4 1.46319E-4
54 1.02954 3.70801E-4 7.03576E-4
55 1.03472 5.82025E-4 -1.04674E-3
56 1.04061 7.64777E-4 6.8877E-4
57 1.06951 -1.90177E-3 7.91616E-4
58 1.07581 4.4721E-2 -2.69247E-2
59 1.11346 3.65701E-3 -1.87478E-3
60 1.11951 -6.53387E-3 -7.80193E-3
61 1.16035 2.23586E-4 4.97701E-4
62 1.16693 -1.55287E-4 2.64033E-3
63 1.21136 1.78575E-3 -1.15439E-3
64 13.66079 -1.1608E-2 1.0103E-3
65 14.76529 3.24083E-3 6.7106E-3
66 27.55455 -1.556E-2 -2.52712E-4
67 31.81193 6.40709E-3 -5.49994E-3
68 182.62118 -3.08924E-2 -1.59575E-2
69 365.25998 -1.01257E-1 -5.8113E-2
Mathematical Formula
Tide calculation mathematical formula
Visual Basic Syntax
Function EstimateTideValues() As [Function]
                        Dim Pi As [Double] = Math.PI
                        Dim sum As [Double] = harmonics(0, 1)
                        For k As Int16 = 1 To harmonics.GetUpperBound(0)
                        Dim period As [Double] = 2 * Pi / harmonics(k, 0)
                        Dim coefCos As [Double] = harmonics(k, 1)
                        Dim coefSin As [Double] = harmonics(k, 2) 
                        sum = sum + coefCos * Math.Cos(time * period)
                        sum = sum + coefSin * Math.Sin(time * period)
                        Next
                        Return sum
                        End Function
C# Syntax
double EstimateTideValues()
                        {
                        double Pi = Math.PI;
                        double sum = harmonics[0, 1];
                        for (int k=1; k <= harmonics.GetUpperBound(0); k++)
                        {
                        double period = 2 * Pi / harmonics[k, 0];
                        double coefCos = harmonics[k, 1];
                        double coefSin = harmonics[k, 2];
                        sum += coefCos * Math.Cos(time * period);
                        sum += coefSin * Math.Sin(time * period);
                        }
                        return sum;
                        }

Axis ranges

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