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Bench Mark Sheet for 8775296, USS Lexington, Corpus Christi Bay TX

Superseded Epoch

Large map location marker Station Location
Small red map location marker Published bench mark
Small blue map location marker Unpublished bench mark

Bench mark positions only appear on the map if their coordinates in the CO-OPS database are at the precision of degrees/minutes/seconds/and tenths of seconds. If the coordinates are less precise, the mark will not appear.

Printable version

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

                                                                                
Station ID: 8775296                         PUBLICATION DATE:  07/11/2018
Name:       USS LEXINGTON, CORPUS CHRISTI                     
            TX
NOAA Chart: 11309                           Latitude:   27° 48.9' N (  27.81490)
USGS Quad:  CORPUS CHRISTI, TX              Longitude:  97° 23.4' W ( -97.38920)


To reach the station from the interchange of Interstate 37 and State Highway 358
proceed 7.2 km (4.5 mi) east, merge onto US-181 toward TX-35/Portland for 2.7 km
 (1.7 mi), take the exit toward the Texas State Aquarium/USS Lexington for 0.3
km (0.2 mi), travel 0.08 mi (0.1 km) straight on Seagull Boulevard, veer right
onto Burleson Street, drive 0.1 km (0.07 mi) on Burleson Street to the
intersection with Timon Boulevard, turn right onto Timon Boulevard and travel
0.6 km  (0.38 mi) until it merges with Surfside Boulevard, proceed on Surfside
Boulevard for 0.3 km (0.17 mi), turn left onto Pearl Avenue, drive 0.1 km (0.06
mi) then turn right onto North Shoreline Boulevard.  The bench marks are located
on the walk ramp leading to the USS Lexington and along Pearl Avenue and North
Shoreline Boulevard near the Texas State Aquarium. The station is located on the
concrete pier leading up to the USS Lexington Museum on North Shoreline
Boulevard.


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


                 PRIMARY BENCH MARK STAMPING:  90008 A 1990
                         DESIGNATION:          90008 A 1990

MONUMENTATION:           Tidal Station disk                    VM#:        17499
AGENCY:                  Conrad Blucher Institute (CBI)        IDB PID#:  AC8425
SETTING CLASSIFICATION:  Concrete Seawall                      OPUS PID:        
LATITUDE:   27° 48.9' N (  27.81436)          LONGITUDE:  97° 23.5' W ( -97.39167)


The primary benchmark is a disk set in a concrete seawall located 15.41 m (50.6
ft) SW of the water taxi landing, 14.02 m (46.0 ft) SE of the sidewalk
Intersection, and 6.68 m (21.9 ft) NE of the concrete sidewalk.

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

                                                                                
Station ID: 8775296                         PUBLICATION DATE:  07/11/2018
Name:       USS LEXINGTON, CORPUS CHRISTI                     
            TX
NOAA Chart: 11309                           Latitude:   27° 48.9' N (  27.81490)
USGS Quad:  CORPUS CHRISTI, TX              Longitude:  97° 23.4' W ( -97.38920)


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


                         BENCH MARK STAMPING:  90008 B 1990
                         DESIGNATION:          90008 B 1990

MONUMENTATION:           Tidal Station disk                    VM#:        17500
AGENCY:                  Conrad Blucher Institute (CBI)        IDB PID#:  AC8426
SETTING CLASSIFICATION:  Concrete Seawall                      OPUS PID:        
LATITUDE:   27° 48.8' N (  27.81411)          LONGITUDE:  97° 23.5' W ( -97.39136)


The benchmark is a disk set in a concrete seawall 30.3 m (99.4ft) east of the
southeast corner of the Texas State Aquarium, 26.0 m (85.3ft) southeast of the
center of a gate and path leading from a boat dock to a parking area, 9.0 m
(29.5ft) northwest of the southeast end of the seawall, 0.7 m (2.3ft) above the
level of a board walkway, and 0.5 m (1.6ft) northeast of a chain-link fence.



                         BENCH MARK STAMPING:  90008 C 1990
                         DESIGNATION:          90008 C 1990

MONUMENTATION:           Bench Mark disk                       VM#:        17535
AGENCY:                  Conrad Blucher Institute              IDB PID#:  AC8424
SETTING CLASSIFICATION:  Stainless steal rod                   OPUS PID:        
LATITUDE:   27° 48.9' N (  27.81464)          LONGITUDE:  97° 23.5' W ( -97.39175)


The bench mark is a disk located 36.8 m (120.7 ft ) northeast of the northeast
corner of the Texas State Aquarium, 7.0 m (23.0 ft) southeast of the center of
an exit driveway from a shuttle bus stop, 4.9 m (16.1 ft ) northwest of the
center of a sidewalk, 2.2 m (7.2 ft ) east of a utility lightpole, and 0.2 m
(0.7 ft) above the level of the driveway, crimped to a stainless steel rod
driven 14.6 m (47.9 ft) to refusal and encased in a 6- inch PVC pipe with
concrete kickblock.

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

                                                                                
Station ID: 8775296                         PUBLICATION DATE:  07/11/2018
Name:       USS LEXINGTON, CORPUS CHRISTI                     
            TX
NOAA Chart: 11309                           Latitude:   27° 48.9' N (  27.81490)
USGS Quad:  CORPUS CHRISTI, TX              Longitude:  97° 23.4' W ( -97.38920)


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


                         BENCH MARK STAMPING:  90008 D 1990
                         DESIGNATION:          90008 D 1990

MONUMENTATION:           Bench Mark disk                       VM#:        17536
AGENCY:                  Conrad Blucher Institute              IDB PID#:  AC8423
SETTING CLASSIFICATION:  Stainless steel rod                   OPUS PID:        
LATITUDE:   27° 48.9' N (  27.81519)          LONGITUDE:  97° 23.5' W ( -97.39161)


The bench mark is a brass disk at the intersection of North Shoreline Boulevard
and Pearl Street in a shrubby area between a curb and sidewalk at the NE end of
a median at a bus stop, located 13.6 m (44.6 ft) NW of the center of the exit
driveway for a shuttle bus stop, 10.1 m (33.1 ft) SE of the center of the
entrance driveway, 7.6 m (24.9 ft) SW of the extended street center, 3.0 m (9.8
ft) NW of the center of a manhole cover, 2.0 m (6.6 ft) NW of the extended
boulevard center, and 0.2 m (0.7 ft) above the level of the street, crimped to a
stainless steal rod driven 17.7 m (56 ft) to refusal, and encased in a 6 inch
PVC and concrete kickblock.

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

                                                                                
Station ID: 8775296                         PUBLICATION DATE:  07/11/2018
Name:       USS LEXINGTON, CORPUS CHRISTI                     
            TX
NOAA Chart: 11309                           Latitude:   27° 48.9' N (  27.81490)
USGS Quad:  CORPUS CHRISTI, TX              Longitude:  97° 23.4' W ( -97.38920)


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


                         BENCH MARK STAMPING:  90008 E 1990
                         DESIGNATION:          90008 E 1990

MONUMENTATION:           Bench Mark disk                       VM#:        17537
AGENCY:                  Conrad Blucher Institute (CBI)        IDB PID#:  AC8422
SETTING CLASSIFICATION:  Stainless steal rod                   OPUS PID#: AC8422
LATITUDE:   27° 48.9' N (  27.81564)          LONGITUDE:  97° 23.5' W ( -97.39242)


The bench mark is a disk located at the inter section of Surfside Boulevard and
Pearl Street, in a shrubby area between a curb and sidewalk, 16.8 m (55.1 ft)
south east of the Boulevard Center,     12.31 m (40.4 ft) east of the center of
a manhole cover, 6.61 m (21.7 ft) southwest of the street center, 1.8 m (5.9 ft)
south of a utility light pole, 0.6 m (2.0ft) northeast of the northeast edge of
a sidewalk, and 0.3 m (1.0 ft) above the level of the street. The benchmark is
crimped to a stainless steel rod driven 17.1 m (56.1 ft) to refusal and encased
in a 6- inch PVC pipe with concrete kickblock.



                         BENCH MARK STAMPING:  5296 D 2012
                         DESIGNATION:          877 5296 D

MONUMENTATION:           Bench Mark disk                       VM#:        20947
AGENCY:                  Conrad Blucher Institute (CBI)        IDB PID#:        
SETTING CLASSIFICATION:                                        OPUS PID:        
LATITUDE:   27° 49.0' N (  27.81633)          LONGITUDE:  97° 23.4' W ( -97.39039)


The bench mark is a disk set into a concrete walkway of the USS Lexington,
located 39.7 m (130.2 ft) NW of "5296 C 2012", 36.9 m (121.1 ft) east of the
road centerline, and 11.4 m (37.4 ft) south of the A4 Skyhawk display.  

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

                                                                                
Station ID: 8775296                         PUBLICATION DATE:  07/11/2018
Name:       USS LEXINGTON, CORPUS CHRISTI                     
            TX
NOAA Chart: 11309                           Latitude:   27° 48.9' N (  27.81490)
USGS Quad:  CORPUS CHRISTI, TX              Longitude:  97° 23.4' W ( -97.38920)


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


                         BENCH MARK STAMPING:  5296 C 2012
                         DESIGNATION:          877 5296 C

MONUMENTATION:           Bench Mark disk                       VM#:        20948
AGENCY:                  Conrad Blucher Institute (CBI)        IDB PID#:        
SETTING CLASSIFICATION:                                        OPUS PID:        
LATITUDE:   27° 49.0' N (  27.81617)          LONGITUDE:  97° 23.4' W ( -97.39006)


The bench mark is a disk set into a concrete walkway of the USS Lexington 94.3 m
(309.4 ft) north west of "5296 B 2012", 39.7 m (130.2 ft) south east of "5296 D
2012", and 25.62 m (84.1 ft) east of the beginning of the USS Lexington walkway.
 



                         BENCH MARK STAMPING:  5296 B 2012
                         DESIGNATION:          877 5296 B

MONUMENTATION:           Bench Mark disk                       VM#:        20949
AGENCY:                  Conrad Blucher Institute (CBI)        IDB PID#:        
SETTING CLASSIFICATION:                                        OPUS PID:        
LATITUDE:   27° 48.9' N (  27.81569)          LONGITUDE:  97° 23.4' W ( -97.38928)


The bench mark is a disk set into a concrete walkway of the USS Lexington 27.4 m
(89.9 ft) north of "5296 A 2012", 8.83 m (29.0 ft) east of the viewing platform
located next to the walkway, and 6.28 m (20.6 ft) north of access ramp leading
to the USS Lexington.

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

                                                                                
Station ID: 8775296                         PUBLICATION DATE:  07/11/2018
Name:       USS LEXINGTON, CORPUS CHRISTI                     
            TX
NOAA Chart: 11309                           Latitude:   27° 48.9' N (  27.81490)
USGS Quad:  CORPUS CHRISTI, TX              Longitude:  97° 23.4' W ( -97.38920)


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


                         BENCH MARK STAMPING:  5296 A  2012
                         DESIGNATION:          877 5296 A

MONUMENTATION:           Bench Mark disk                       VM#:        20950
AGENCY:                  Conrad Blucher Institute (CBI)        IDB PID#:        
SETTING CLASSIFICATION:                                        OPUS PID:        
LATITUDE:   27° 48.9' N (  27.81539)          LONGITUDE:  97° 23.4' W ( -97.38919)


The bench mark is a disk set into a concrete walkway of the USS Lexington 53.4 m
(175.2 ft) north of the Aquatrack Leveling Point, 27.4 m (89.9 ft) south of
"5296 B 2012" and 16.8 m (55.1 ft) north west of the walkway handrail end next
to the USS Lexington.  

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

                                                                                
Station ID: 8775296                         PUBLICATION DATE:  07/11/2018
Name:       USS LEXINGTON, CORPUS CHRISTI                     
            TX
NOAA Chart: 11309                           Latitude:   27° 48.9' N (  27.81490)
USGS Quad:  CORPUS CHRISTI, TX              Longitude:  97° 23.4' W ( -97.38920)


                            T I D A L   D A T U M S 


Tidal datums at USS LEXINGTON, CORPUS CHRISTI based on:

     LENGTH OF SERIES:      9 MONTHS
     TIME PERIOD:           July 2016 - March 2017
     TIDAL EPOCH:           2002-2006
     CONTROL TIDE STATION:  8774770 ROCKPORT, ARANSAS BAY


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

     HIGHEST OBSERVED WATER LEVEL (10/05/2017)         =  0.824
     MEAN HIGHER HIGH WATER                     MHHW   =  0.180
     MEAN HIGH WATER                            MHW    =  0.177
     MEAN SEA LEVEL                             MSL    =  0.102
     MEAN TIDE LEVEL                            MTL    =  0.091
     MEAN LOW WATER                             MLW    =  0.004
     MEAN LOWER LOW WATER                       MLLW   =  0.000
     North American Vertical Datum              NAVD88 = -0.136
     LOWEST  OBSERVED WATER LEVEL (01/13/2018)         = -0.342

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     90008 A 1990                                1.459    1.282
     90008 B 1990                                1.443    1.266
     90008 C 1990                                1.352    1.175
     90008 D 1990                                1.063    0.886
     90008 E 1990                                1.076    0.899
     5296 D 2012                                 0.900    0.723
     5296 C 2012                                 3.319    3.142
     5296 B 2012                                 7.101    6.924
     5296 A  2012                                8.550    8.373


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

                                                                                
Station ID: 8775296                         PUBLICATION DATE:  07/11/2018
Name:       USS LEXINGTON, CORPUS CHRISTI                     
            TX
NOAA Chart: 11309                           Latitude:   27° 48.9' N (  27.81490)
USGS Quad:  CORPUS CHRISTI, TX              Longitude:  97° 23.4' W ( -97.38920)


                             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.

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Products available at 8775296 USS Lexington, Corpus Christi Bay, TX

Revised: 08/08/2018
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services