Table 1 Location and duration of the sea level datasets held by the Port of London Authority.

From: Digitising historical sea level records in the Thames Estuary, UK

Gauge

Latitude (Degrees)

Longitude (Degrees)

Analogue (continuous analogue curve on microfilm)

Analogue (tabulated HW & LWs)

Digital (10 min 1994–1999, 1 min 2000 - current)

1. Walton-on-Naze

51.8428

1.2817

25/09/1967–03/11/1996

01/01/1968–31/12/1978, 01/06/1980–31/12/1995

01/01/1995 - current

2. Margate Harbour

51.3914

1.3797

21/03/1970–08/01/1997

22/09/1967–31/12/1977, 01/01/1979–31/12/1995

01/01/1994 - current

3. Shivering Sand

51.4723

1.1081

22/06/1964–09/05/1988

01/01/1974–31/12/1974

01/01/1995 – current (missing 2001)

4. Southend

51.5139

0.7255

03/01/1929–03/01/1997

01/01/1911–31/12/1995

01/01/1994 - current

5. Coryton

51.5041

0.5068

17/10/1969–23/01/1983

01/01/1969–31/12/1983

01/01/1994 - current

6. Tilbury

51.4562

0.3368

24/01/1929–12/10/1989

08/08/1912–31/12/1995

01/01/1994 - current

7. Gallions Pier (Albert Dock)

51.5069

0.0518

20/07/1950–08/05/1990

01/01/1915–07/09/1935, 01/01/1976–31/12/1990

01/01/1994 - current

8. Silvertown (North Woolwich)

51.4982

0.0478

20/07/1950–08/05/1990

20/07/1950–31/12/1975

01/01/1994 - current

9. Cherry Garden Pier

51.5013

−0.0610

01/01/1911–31/12/1934

10. Tower Pier

51.5070

−0.0775

01/01/1929–10/01/1997

23/04/1929–31/12/1995

01/01/1995 - current

11. Old Swan Pier

51.5072

−0.0919

01/01/1929–10/01/1997

01/05/1911–22/04/1929

01/01/1995 - current

12. All Hallows Pier

51.4468

0.7601

01/01/1911–31/01/1911

13. Temple Pier

51.5107

−0.1123

01/01/1911–31/12/1918

14. Strand-on-Green

51.4867

−0.2841

01/01/1911–31/12/1924

15. Richmond

51.4623

−0.3159

30/06/1962–10/01/1997

01/01/1911–31/12/1995

01/01/1995 - current