Superseded Bench Mark Sheet for 8771510, Galveston Pleasure Pier TX

Present Epoch

Printable version

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
Datums Page                                                        Page  1 of  8

                                                   PUBLICATION DATE:  01/14/2000
Station ID: 8771510                                SUPERCEDED DATE:   04/21/2003
Name:       GALVESTON PLEASURE PIER                           
            TEXAS
NOAA Chart: 11324                                  Latitude:         29° 17.1' N
USGS Quad:  GALVESTON                              Longitude:        94° 47.3' W


To reach the tidal bench marks from the Post Office on the west side of
Rosenberg Avenue (25th Street) and Winnie Street (Avenue G), proceed SE on
Rosenberg Avenue for 1.6 km (1.0 mi) to Seawall Boulevard and the entrance to
Flagship Pier (formerly known as Pleasure Pier).  The bench marks are primarily
east of the pier on the seawall along Seawall Boulevard. The tide gage and staff
are approximately 0.3 km (0.2 mi) SE of Seawall Boulevard on the SE corner of
the pier.


                         T I D A L   B E N C H   M A R K S


                 PRIMARY BENCH MARK STAMPING:  NO 43 1957
                         DESIGNATION:          877 1510 TIDAL 43

MONUMENTATION:           Tidal Station disk                        VM#:      854
AGENCY:                  Coast and Geodetic Survey (CGS)           PID#:  AW0592
SETTING CLASSIFICATION:  Concrete pier deck


The primary bench mark is a disk set in the top of the concrete floor of the
Flagship Motor Hotel Fishing Pier, 0.3 km (0.2 mi) SE of the center line of
Seawall Boulevard, at a narrow drive between the Hotel and Fishing Pier parking
lots, 18.84 m (61.8 ft) NW of the NW edge of the Fishing Pier parking lot, 10.73
m (35.2 ft) SE of the SE edge of the hotel parking lot, 1.2 m (3.9 ft) east of a
wire gate, and 0.37 m (1.2 ft) SW of the NE edge of the drive.



                         BENCH MARK STAMPING:  WALL 1933 ELEV 15.279 FT
                         DESIGNATION:          WALL

MONUMENTATION:           Triangulation Station disk                VM#:      855
AGENCY:                  Coast and Geodetic Survey (CGS)           PID#:  AW0588
SETTING CLASSIFICATION:  Concrete sea wall


The bench mark is a disk set in the top of the sea wall, along Seawall Boulevard
about midway between 12th and 13th Streets, 10.91 m (35.8 ft) SW of the west
corner of a concrete bench, 0.79 m (2.6 ft) south of a small angle in the
sidewalk, 0.52 m (1.7 ft) SE of the SE edge of the sidewalk, and about level
with the boulevard.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  2 of  8

                                                   PUBLICATION DATE:  01/14/2000
Station ID: 8771510                                SUPERCEDED DATE:   04/21/2003
Name:       GALVESTON PLEASURE PIER                           
            TEXAS
NOAA Chart: 11324                                  Latitude:         29° 17.1' N
USGS Quad:  GALVESTON                              Longitude:        94° 47.3' W


                         T I D A L   B E N C H   M A R K S


                         BENCH MARK STAMPING:  E 168 1936 ELEV 15.502 FT
                         DESIGNATION:          E 168

MONUMENTATION:           Bench Mark disk                           VM#:      856
AGENCY:                  Coast and Geodetic Survey (CGS)           PID#:  AW0590
SETTING CLASSIFICATION:  Concrete sea wall


The bench mark is a disk set in the top center of the concrete sea wall in line
with the center of a rock bracker, about 104 m (342 ft) SW of the junction of
Seawall Boulevard and 23rd Street North across the boulevard from Playland Park,
21.18 m (69.5 ft) NE of the NE end of a concrete bench, 8.47 m (27.8 ft) SW of
the south corner of a concrete block planter with two palm trees, 5.43 m (17.8
ft) SE of the SE curb of the boulevard,   0.94 m (3.1 ft) north of the NW end of
a pipe handrail along steps leading to the beach, and about 0.3 m (1 ft) higher
than the boulevard.



                         BENCH MARK STAMPING:  WALL NO 1 1942
                         DESIGNATION:          WALL RM 1

MONUMENTATION:           Reference Mark disk                       VM#:      857
AGENCY:                  Coast and Geodetic Survey (CGS)           PID#:  AW0589
SETTING CLASSIFICATION:  Concrete sea wall


The bench mark is a disk set in the top of the concrete sea wall, along Seawall
Boulevard about midway between 12th and 13th Streets, 14.23 m (46.7 ft) NE of
the station, 1.71 m (5.6 ft) NE of the east corner of a conctete bench, 1.19 m
(3.9 ft) SE of the SE edge of the sidewalk, and about level with the boulevard.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  3 of  8

                                                   PUBLICATION DATE:  01/14/2000
Station ID: 8771510                                SUPERCEDED DATE:   04/21/2003
Name:       GALVESTON PLEASURE PIER                           
            TEXAS
NOAA Chart: 11324                                  Latitude:         29° 17.1' N
USGS Quad:  GALVESTON                              Longitude:        94° 47.3' W


                         T I D A L   B E N C H   M A R K S


                         BENCH MARK STAMPING:  NO 44 1957
                         DESIGNATION:          877 1510 TIDAL 44

MONUMENTATION:           Tidal Station disk                        VM#:      858
AGENCY:                  Coast and Geodetic Survey (CGS)           PID#:  AW0591
SETTING CLASSIFICATION:  Concrete sea wall


The bench mark is a disk set in the top center of the concrete sea wall, at the
junction of Seawall Boulevard and Rosenberg Avenue  North (25th Street), 3 m (10
ft) SW of the centerline of a concrete ramp leading down to the beach, 0.88 m
(2.9 ft) NW of the extended concrete curb of the ramp leading up along the NE
side of the Flagship Motor Hotel Pier, 0.70 m (2.3 ft) north of the NE corner of
a chain link fence around the Flagship Motor Hotel, and about 0.61 m (2.0 ft)
higher than the boulevard.



                         BENCH MARK STAMPING:  NO 10 1973
                         DESIGNATION:          877 1510 TIDAL 10

MONUMENTATION:           Tidal Station disk                        VM#:      859
AGENCY:                  National Ocean Survey (NOS)               PID#:  AW1221
SETTING CLASSIFICATION:  Concrete sea wall


The bench mark is a disk set flush in the top of the sea wall at the junction of
Seawall Boulevard and Tremont Street (22nd Street), 17.28 m (56.7 ft) ESE of the
centerline of Seawall Boulevard, 7.50 m (24.6 ft) SW of steps leading to the
beach at the foot of Tremont Street, and 0.79 m (2.6 ft) NW of the edge of the
sea wall.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  4 of  8

                                                   PUBLICATION DATE:  01/14/2000
Station ID: 8771510                                SUPERCEDED DATE:   04/21/2003
Name:       GALVESTON PLEASURE PIER                           
            TEXAS
NOAA Chart: 11324                                  Latitude:         29° 17.1' N
USGS Quad:  GALVESTON                              Longitude:        94° 47.3' W


                         T I D A L   B E N C H   M A R K S


                         BENCH MARK STAMPING:  NO 45 1975
                         DESIGNATION:          877 1510 TIDAL 45

MONUMENTATION:           Tidal Station disk                        VM#:      860
AGENCY:                  National Ocean Survey (NOS)               PID#:  AW1247
SETTING CLASSIFICATION:  Concrete sea wall


The bench mark is a disk set in the top center of the concrete sea wall, at the
junction of Seawall Boulevard and Moody Avenue (21st Street), across the
boulevard from the SE corner of Moody Center, 22.01 m (72.2 ft) east of a red
and yellow fire hydrant, 15.48 m (50.8 ft) SE of the center line of Seawall
Boulevard, 9.54 m (31.3 ft) SW of the SW corner of a planter with one palm tree,
and 0.79 m (2.6 ft) NW of the seaward side of the sea wall.



                         BENCH MARK STAMPING:  NO 46 1975
                         DESIGNATION:          877 1510 TIDAL 46

MONUMENTATION:           Tidal Station disk                        VM#:      861
AGENCY:                  National Ocean Survey (NOS)               PID#:  AW1703
SETTING CLASSIFICATION:  Concrete sea wall


The bench mark is a disk set in the top of the sea wall, near the junction of
Seawall Boulevard and 18th Street, 15.03 m (49.3 ft) SE of the center line of
Seawall Boulevard, 3.17 m (10.4 ft) SW of the SW edge of a concrete bench along
the sea wall, and 0.79 m (2.6 ft) NW of the seaward side of the sea wall.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  5 of  8

                                                   PUBLICATION DATE:  01/14/2000
Station ID: 8771510                                SUPERCEDED DATE:   04/21/2003
Name:       GALVESTON PLEASURE PIER                           
            TEXAS
NOAA Chart: 11324                                  Latitude:         29° 17.1' N
USGS Quad:  GALVESTON                              Longitude:        94° 47.3' W


                         T I D A L   B E N C H   M A R K S


                         BENCH MARK STAMPING:  NO 47 1975
                         DESIGNATION:          877 1510 TIDAL 47

MONUMENTATION:           Tidal Station disk                        VM#:      862
AGENCY:                  National Ocean Survey (NOS)               PID#:  AW1887
SETTING CLASSIFICATION:  Concrete sea wall


The bench mark is a disk set in the top of the sea wall, at the junction of
Seawall Boulevard and 14th Street, 14.57 m (47.8 ft) SE of the centerline of
Seawall Boulevard, 2.10 m (6.9 ft) north of the NE side of steps leading to the
beach, and 0.85 m (2.8 ft) NW of the seaward side of the sea wall.



                         BENCH MARK STAMPING:  S 449 5
                         DESIGNATION:          S 449 5

MONUMENTATION:           Survey disk                               VM#:      863
AGENCY:                  US Army Corps of Engineers                PID#:  AW4850
SETTING CLASSIFICATION:  Concrete sea wall


The bench mark is a disk set in the top center of the concrete sea wall, at the
junction of Seawall Boulevard and 24th Street, 23.04 m (75.6 ft) NE of bench
mark NO 44 1957, 19.99 m (65.6 ft) NE of the NE ramp leading to the Flagship
Motor Hotel,  15.18 m (49.8 ft) SE of the centerline of Seawall Boulevard, and
3.23 m (10.6 ft) west of the west side of steps leading to the beach.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  6 of  8

                                                   PUBLICATION DATE:  01/14/2000
Station ID: 8771510                                SUPERCEDED DATE:   04/21/2003
Name:       GALVESTON PLEASURE PIER                           
            TEXAS
NOAA Chart: 11324                                  Latitude:         29° 17.1' N
USGS Quad:  GALVESTON                              Longitude:        94° 47.3' W


                            T I D A L   D A T U M S 


Tidal datums at GALVESTON PLEASURE PIER based on:

     LENGTH OF SERIES:      5 Years
     TIME PERIOD:           January 1990 - December 1994
     TIDAL EPOCH:           1960-1978
     CONTROL TIDE STATION:  8771450 GALVESTON PIER 21, GALVESTON CHANNEL


Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:

     HIGHEST OBSERVED WATER LEVEL (09/11/1961)         =  2.829
     MEAN HIGHER HIGH WATER                     MHHW   =  0.649
     MEAN HIGH WATER                            MHW    =  0.578
     MEAN TIDE LEVEL                            MTL    =  0.364
     MEAN SEA LEVEL                             MSL    =  0.359
     North American Vertical Datum              NAVD88 =  0.209
     MEAN LOW WATER                             MLW    =  0.151
     MEAN LOWER LOW WATER                       MLLW   =  0.000
     LOWEST  OBSERVED WATER LEVEL (02/12/1985)         = -1.463

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     NO 43 1957                                  7.563    6.985
     WALL 1933 ELEV 15.279 FT                    4.557    3.979
     E 168 1936 ELEV 15.502 FT                   4.611    4.033
     WALL NO 1 1942                              4.530    3.952
     NO 44 1957                                  4.590    4.012
     NO 10 1973                                  4.579    4.001
     NO 45 1975                                  4.597    4.019
     NO 46 1975                                  4.585    4.007
     NO 47 1975                                  4.549    3.971
     S 449 5                                     4.599    4.021


                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  7 of  8

                                                   PUBLICATION DATE:  01/14/2000
Station ID: 8771510                                SUPERCEDED DATE:   04/21/2003
Name:       GALVESTON PLEASURE PIER                           
            TEXAS
NOAA Chart: 11324                                  Latitude:         29° 17.1' N
USGS Quad:  GALVESTON                              Longitude:        94° 47.3' W


Foot Notes:

Galveston Bay, Texas has anomalous relative sea level trends compared to most
other geographic regions in the United States.  This is due to a general
subsidence of land in this area, which is occurring at a rapid rate.  Because of
the magnitude of the sea level trends in these areas, NOAA has adopted a
procedure for computing accepted tidal datums for the National Water Level
Observation Network (NWLON) using the last several years of sea level data
rather than the 19 - year tidal epoch. The tide ranges are still based on the
1960 - 1978 National Tidal Datum Epoch (NTDE) and are applied to the five year
(1990 - 1994) mean tide level (MTL) to compute other tidal datums. The adoption
of this procedure was necessary to ensure that these tidal datums accurately
represent the existing stand of sea level.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  8 of  8

                                                   PUBLICATION DATE:  01/14/2000
Station ID: 8771510                                SUPERCEDED DATE:   04/21/2003
Name:       GALVESTON PLEASURE PIER                           
            TEXAS
NOAA Chart: 11324                                  Latitude:         29° 17.1' N
USGS Quad:  GALVESTON                              Longitude:        94° 47.3' W


                             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 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.

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Products available at 8771510 Galveston Pleasure Pier, TX