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Datums Page Page 1 of 10
Station ID: 9500966 PUBLICATION DATE: 08/03/2010
Name: MADERO, TAMPICO HARBOR, MEXICO
NOAA Chart: 411 Latitude: 22° 15.7' N ( 22.26170)
USGS Quad: Longitude: 97° 47.7' W ( -97.79500)
T I D A L B E N C H M A R K S
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 10
Station ID: 9500966 PUBLICATION DATE: 08/03/2010
Name: MADERO, TAMPICO HARBOR, MEXICO
NOAA Chart: 411 Latitude: 22° 15.7' N ( 22.26170)
USGS Quad: Longitude: 97° 47.7' W ( -97.79500)
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 0966 A 2004
DESIGNATION: 950 0966 A TIDAL
ALIAS: PBM
MONUMENTATION: Metal Rod VM#: 17555
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Stainless steel rod OPUS PID:
LATITUDE: 22° 15.8' N ( 22.26330) LONGITUDE: 97° 47.8' W ( -97.79670)
The primary bench mark is located in the city of Madrero, Tamaulipas, Mexico on
Calle Emilio Carranza, 21.09 m (69.2 ft) SE of a concrete power and telephone
pole CFE 9 450 19 EEB located on the SW corner of the intersection of Calle
Emilio Carranza and Calle Paso Don ye Cecilia, 4.78 m (15.7 ft) from the center
of Calle Emilio Carranza, and 2.50 m (8.2 ft) SSW of a 5.00 m (16.4 ft) tall
concrete block wall. The bench mark is crimped to a stainless steel rod driven
18.0 m (59 ft) into the ground, and encased in a 6-inch PVC pipe with concrete
kickblock and an aluminum cover.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 10
Station ID: 9500966 PUBLICATION DATE: 08/03/2010
Name: MADERO, TAMPICO HARBOR, MEXICO
NOAA Chart: 411 Latitude: 22° 15.7' N ( 22.26170)
USGS Quad: Longitude: 97° 47.7' W ( -97.79500)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 1
DESIGNATION: BN 1
ALIAS: BM1 PIER
MONUMENTATION: Tidal Station disk VM#: 17556
AGENCY: Unknown IDB PID#:
SETTING CLASSIFICATION: Pier curb OPUS PID:
LATITUDE: 22° 15.7' N ( 22.26170) LONGITUDE: 97° 47.8' W ( -97.79670)
The bench mark is a disk imbedded in a concrete curb of the pier of the Tampico
Pilots Dock between the concrete tide house and pilots storage area, 3.90 m
(12.8 ft) from bench mark "BN120434 1999", 2.50 m (8.2 ft) from the pier walkway
to the shore, and 0.09 (0.3 ft) from the NE corner of the tide house.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 10
Station ID: 9500966 PUBLICATION DATE: 08/03/2010
Name: MADERO, TAMPICO HARBOR, MEXICO
NOAA Chart: 411 Latitude: 22° 15.7' N ( 22.26170)
USGS Quad: Longitude: 97° 47.7' W ( -97.79500)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: SECRETARIA DE MARIA BN 120434
DESIGNATION: PIER
ALIAS: SECRETARIA MARINA
MONUMENTATION: Bench Mark disk VM#: 17557
AGENCY: SDM IDB PID#:
SETTING CLASSIFICATION: Pier OPUS PID:
LATITUDE: 22° 15.7' N ( 22.26170) LONGITUDE: 97° 47.8' W ( -97.79670)
The bench mark is a disk set into the top of a concrete curb on the SW side of
the Tampico Pilot Boat Dock, 5.00 m (16.4 ft) SW of the SW inside corner of the
pier "T", 3.90 m (12.8 ft) SSE of BN1, and 1.40 m (4.6 ft) SE of the concrete
tide house.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 10
Station ID: 9500966 PUBLICATION DATE: 08/03/2010
Name: MADERO, TAMPICO HARBOR, MEXICO
NOAA Chart: 411 Latitude: 22° 15.7' N ( 22.26170)
USGS Quad: Longitude: 97° 47.7' W ( -97.79500)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 2 1962
DESIGNATION: BN 2
ALIAS: PILOT HOUSE
MONUMENTATION: Tidal Station disk VM#: 17558
AGENCY: Unknown IDB PID#:
SETTING CLASSIFICATION: Home foundation OPUS PID:
LATITUDE: 22° 15.7' N ( 22.26170) LONGITUDE: 97° 47.8' W ( -97.79670)
The bench mark is a disk set into the concrete foundation of the Tampico Pilots
Building located on the SW side of Calle Emilio Carranza between the boat ramp
at the south end of Calle Emilio Carranza and the intersection of Calle Paso Don
ye Cecilia, 12.01 m (39.4 ft) from the centerline of Calle Emilio Carranza, 4.51
m (14.8 ft) south of the NE corner of the Pilots Building, and 1.01 m (3.3 ft)
east of the SE corner of the Pilots Building.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 10
Station ID: 9500966 PUBLICATION DATE: 08/03/2010
Name: MADERO, TAMPICO HARBOR, MEXICO
NOAA Chart: 411 Latitude: 22° 15.7' N ( 22.26170)
USGS Quad: Longitude: 97° 47.7' W ( -97.79500)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 1624119178 P49T
DESIGNATION: P 49T
ALIAS: BOAT RAMPA
MONUMENTATION: Bench Mark disk VM#: 17559
AGENCY: Comision DE Aqua IDB PID#:
SETTING CLASSIFICATION: Boat ramp foundation sidewalk OPUS PID:
LATITUDE: 22° 15.7' N ( 22.26170) LONGITUDE: 97° 47.7' W ( -97.79500)
The bench mark is set into the sidewalk on the north side of the boat ramp at
the south end of Calle Emilio Carranza, 16.61 m (54.5 ft) from the north point
of a concrete slab elevated 0.40 m (1.3 ft) just north of the bait house, 3.41 m
(11.2 ft) from the centerline of the boat ramp, and 1.40 m (4.6 ft) from the NW
corner of the bait house on the east side of the ramp.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 7 of 10
Station ID: 9500966 PUBLICATION DATE: 08/03/2010
Name: MADERO, TAMPICO HARBOR, MEXICO
NOAA Chart: 411 Latitude: 22° 15.7' N ( 22.26170)
USGS Quad: Longitude: 97° 47.7' W ( -97.79500)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 0966 B 2004
DESIGNATION: 950 0966 B TIDAL
ALIAS: 0966 B
MONUMENTATION: Metal Rod VM#: 17560
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Stainless steel rod OPUS PID:
LATITUDE: 22° 15.8' N ( 22.26330) LONGITUDE: 97° 47.8' W ( -97.79670)
The bench mark is located on the site of the Centro DE Salud Alimenta at teh NE
quadrant of the intersection of Calle Emelio Carranza and Calle Pase Don ye
Cecilia, 18.01 m (59.1 ft) north of the centerline of Calle Pase Don ye Cecilia,
13.69 m (44.9 ft) SE of the Monumento a La Madre, and 1.01 m (3.3 ft) south of
the concrete bleachers on the west side of the basketball court slab. The bench
mark is crimped to a stainless steel rod driven 18.0 m (59 ft) into the ground,
and encased in a 6-inch PVC pipe with concrete kickblock and an aluminum access
cover.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 8 of 10
Station ID: 9500966 PUBLICATION DATE: 08/03/2010
Name: MADERO, TAMPICO HARBOR, MEXICO
NOAA Chart: 411 Latitude: 22° 15.7' N ( 22.26170)
USGS Quad: Longitude: 97° 47.7' W ( -97.79500)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: BN 120430
DESIGNATION: BN 3
ALIAS: BN3
MONUMENTATION: Tidal Station disk VM#: 17561
AGENCY: Secretaria De Marina IDB PID#: TX2940
SETTING CLASSIFICATION: Sidewalk OPUS PID:
LATITUDE: 22° 15.8' N ( 22.26330) LONGITUDE: 97° 47.8' W ( -97.79670)
The bench mark is a disk set in the concrete sidewalk SW of the main school
building located at the Centro De Salud Alimenta, 18.81 m (61.7 ft) NW of the NW
corner of the building at the NE corner of Calle Paso Don ye Cecilia and Calle
Emilio Carranza, 4.69 m (15.4 ft) east of the centerline of Calle Emilio
Carranza, and 1.01 (3.3 ft) west of a light pole.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 9 of 10
Station ID: 9500966 PUBLICATION DATE: 08/03/2010
Name: MADERO, TAMPICO HARBOR, MEXICO
NOAA Chart: 411 Latitude: 22° 15.7' N ( 22.26170)
USGS Quad: Longitude: 97° 47.7' W ( -97.79500)
T I D A L D A T U M S
Tidal datums at MADERO, TAMPICO HARBOR, MEXICO based on:
LENGTH OF SERIES: 2 YEARS
TIME PERIOD: September 2004 - August 2006
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 8779770 PORT ISABEL, LAGUNA MADRE
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
HIGHEST OBSERVED WATER LEVEL (10/09/2005) = 1.063
MEAN HIGHER HIGH WATER MHHW = 0.418
MEAN HIGH WATER MHW = 0.399
MEAN SEA LEVEL MSL = 0.250
MEAN TIDE LEVEL MTL = 0.230
MEAN LOW WATER MLW = 0.060
MEAN LOWER LOW WATER MLLW = 0.000
LOWEST OBSERVED WATER LEVEL (12/13/2004) = -0.477
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
0966 A 2004 1.605 1.206
1 2.539 2.140
SECRETARIA DE MARIA BN 120434 2.499 2.100
2 1962 1.663 1.264
1624119178 P49T 1.593 1.194
0966 B 2004 1.954 1.555
BN 120430 2.274 1.875
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 10 of 10
Station ID: 9500966 PUBLICATION DATE: 08/03/2010
Name: MADERO, TAMPICO HARBOR, MEXICO
NOAA Chart: 411 Latitude: 22° 15.7' N ( 22.26170)
USGS Quad: Longitude: 97° 47.7' W ( -97.79500)
D E F I N I T I O N S
Mean Sea Level (MSL) is a tidal datum determined over a 19-year National Tidal
Datum Epoch. It pertains to local mean sea level and should not be confused
with the fixed datums of North American Vertical Datum of 1988 (NAVD88).
NAVD88 is a fixed datum derived from a simultaneous, least squares, minimum
constraint adjustment of Canadian/Mexican/United States leveling observations.
Local mean sea level observed at Father Point/Rimouski, Canada was held fixed as
the single initial constraint. NAVD88 replaces NGVD29 as the national
standard geodetic reference for heights. Bench mark elevations relative to
NAVD88 are available from NGS through the World Wide Web at
National Geodetic Survey.
NGVD29 is a fixed datum adopted as a national standard geodetic reference for
heights but is now considered superseded. NGVD29 is sometimes referred to as
Sea Level Datum of 1929 or as Mean Sea Level on some early issues of Geological
Survey Topographic Quads. NGVD29 was originally derived from a general
adjustment of the first-order leveling networks of the U.S. and Canada after
holding mean sea level observed at 26 long term tide stations as fixed.
Numerous local and wide-spread adjustments have been made since establishment in
1929. Bench mark elevations relative to NGVD29 are available from the National
Geodetic Survey (NGS) data base via the World Wide Web at
National Geodetic Survey.
NAVD88 and NGVD29 are fixed geodetic datums whose elevation relationships to
local MSL and other tidal datums may not be consistent from one location to
another.
The Vertical Mark Number (VM#) and PID# shown on the bench mark sheet are unique
identifiers for bench marks in the tidal and geodetic databases, respectively.
Each bench mark in either database has a single, unique VM# and/or PID# assigned.
Where both VM# and PID# are indicated, both tidal and geodetic elevations are
available for the bench mark listed. The NGS's Integrated Data Base (IDB PID)
provides geodetic datum based on traditionally leveled and bluebooked ties to
the National Spatial Reference System(NSRS) https://www.ngs.noaa.gov/datasheets/.
The NGS Online Positioning User Service (OPUS PID) provides geodetic datum based
on GPS position & tie it to the NSRS https://www.ngs.noaa.gov/OPUS/.
The NAVD88 elevation is shown on the Elevations of Tidal Datums Table Referred
to MLLW only when two or more of the bench marks listed have NAVD88 elevations.
The NAVD88 elevation relationship shown in the table is derived from an average
of several bench mark elevations relative to tide station datum. As a result of
this averaging, NAVD88 bench mark elevations computed indirectly from the tidal
datums elevation table may differ slightly from NAVD88 elevations listed for
each bench mark in the NGS database.