Station Information

Station ID: 205
Latitude: 13.1
Longitude: 80.3
Coastline code: 500
Station code: 91
Country: INDIA
Time span of data: 1916 – 2015
Completeness (%): 61
MTL Data: 1952-1958
MTL-MSL (mm): 1
Date of last update: 27 Apr 2023

Green Arrow: Current Station
Yellow Marker: Neighbouring RLR Station
Red Marker: Neighbouring Metric Station

Please note: In many cases, the station position in our database is accurate to only one minute. Thus, the tide gauge may not appear to be on the coast.

Additional Data Sources (guide to additional data sources)

Nearby Real Time Stations from VLIZ: chenn

Station Documentation

Link to RLR information.

Documentation - date unknown

1952 - 1958 values based on readings of high and low waters

Documentation added 1991-06-11

Madras 500/091 RLR(1964) is 11.4m below BM 160/30

Documentation added 1994-08-04

For a discussion of interannual variability of sea level along the coasts of Pakistan and India, see Clarke and Liu, Journal of Physical Oceanography, 24, 1224, 1994.

Documentation added 2002-12-06

SMRC Newsletter Jul-Dec 2001 reports high E coast correlation with SOI and MSL. MSL is much higher during La Nina tropical cyclones than during El Nino.

Documentation added 2010-09-15

The original benchmark BM 31 was 5.477m above the datum for 1880-1920. In 1952 the benchmark was changed to BM 160/30 this was 5.041m above chart datum. in 1992 the benchmark was changed to BM 160/23 5.04m above chart datum. This benchmark now remains the primary benchmark.

Documentation added 2016-01-12

We have changed the first line above, indicating that the MTL ends in 1958, not 1956 as was previously stated. We have verified that the values in the database are those from Pub. Sci. 20, in which they were indicated as MTL.

Documentation added 2016-01-22

A value of MTL-MSL=1 mm has been applied to the RLR data for the period 1952-1958. This value was derived from the average of three differences in the annual MSL and MTL listed in Pub. Sci. 24. Note that no correction has been applied to the metric data.

Documentation added 2017-06-27

Name changed to Chennai to match supplier - formerly known as Madras

Data Authority

Survey of India
Geodetic and Research Branch
17 E.C. Road
Dehra Dun
PIN 248 001