Delaware River · PA

Philadelphia

William Penn's city, where the nation declared its independence.

Population
1,603,797 (2020 census)
Founded
1682
Declaration
July 4, 1776
Tides
Two highs, two lows a day

Then

  1. Before 1682

    The Lenape live along the Delaware, with a village at Shackamaxon.

  2. 1682

    Quaker William Penn founds Philadelphia.

  3. 1776

    The Second Continental Congress adopts the Declaration of Independence on July 4 in what is now Independence Hall.

  4. 1787

    The Constitutional Convention signs the Constitution there on September 17.

Now

Philadelphia sits between the Delaware and Schuylkill rivers, and its port is growing along the Delaware. Camden and the New Jersey shore lie across the river, and the stations here follow the tidal river up past Burlington.

On the water

From NOAA's predictions for Market Street Bridge, PA over the next 365 days. Heights are in feet above mean lower low water (MLLW).

Pattern
Two highs and two lows a day, close in size
Typical daily range
6.2 ft
Biggest swing
7.1 ft on Sep 1
Smallest swing
5.0 ft on Jun 2
Highest high
7.3 ft, Aug 3 at 2:11 AM
Lowest low
−0.4 ft, Jan 25 at 10:41 PM

24 tide stations around Philadelphia

Show all 24 stations

Sources