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Bench Mark Sheet for 8729871, WARRINGTON, BAYOU GRANDE FL

Superseded Epoch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Small blue map location marker Unpublished bench mark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  7

                                                                                
Station ID: 8729871                         PUBLICATION DATE:  02/05/2004
Name:       WARRINGTON, BAYOU GRANDE                          
            FL
NOAA Chart: 11382                           Latitude:   30° 22.5' N (  30.37500)
USGS Quad:  WEST PENSACOLA                  Longitude:  87° 16.6' W ( -87.27670)


To reach the tidal bench marks from the intersection of Navy Boulevard (State
Road 295) and Gulf Beach Highway (State Road 292) in Warrington, proceed south
on Navy Boulevard for 1.4 km (0.9 mi) to 615 S. Navy Boulevard on the west side
of the highway.  The bench marks are along Navy Boulevard.  The tide gage and
staff were located on the pier behind the property at 615 S. Navy Boulevard.


                         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  7

                                                                                
Station ID: 8729871                         PUBLICATION DATE:  02/05/2004
Name:       WARRINGTON, BAYOU GRANDE                          
            FL
NOAA Chart: 11382                           Latitude:   30° 22.5' N (  30.37500)
USGS Quad:  WEST PENSACOLA                  Longitude:  87° 16.6' W ( -87.27670)


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


                 PRIMARY BENCH MARK STAMPING:  Q 26 1942
                         DESIGNATION:          Q 26

MONUMENTATION:           Bench Mark disk                       VM#:        10286
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  BG1692
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   30° 23.0' N (  30.38330)          LONGITUDE:  87° 16.7' W ( -87.27830)


The primary bench mark is a disk set in the top of a concrete monument, 0.5 km
(0.3 mi) south of the intersection of Navy Boulevard and Gulf Beach Highway, 
3.81 m (12.5 ft) north of the north curb of Sunset Avenue, 3.51 m (11.5 ft) west
of the west curb of Navy Boulevard, 1.22 m (4.0 ft) west of a fence corner, 0.3
m (1 ft) south of a fence line, and 0.12 m (0.4 ft) above ground level.



                         BENCH MARK STAMPING:  9871 A 1977
                         DESIGNATION:          872 9871 A TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:        10287
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  BG3665
SETTING CLASSIFICATION:  Concrete steps                        OPUS PID:        
LATITUDE:   30° 22.9' N (  30.38170)          LONGITUDE:  87° 16.6' W ( -87.27670)


The bench mark is a disk set flush in the eastern end of the bottom step leading
up to the entrance to the Warrington Presbyterian Church located at the
intersection of Navy Boulevard and Sunset Avenue, 21 m (70 ft) east of the east
edge of Navy Boulevard, 14 m (46 ft) south of the edge of Sunset Avenue and 3.20
m (10.5 ft) WNW of the NE corner of the church.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  3 of  7

                                                                                
Station ID: 8729871                         PUBLICATION DATE:  02/05/2004
Name:       WARRINGTON, BAYOU GRANDE                          
            FL
NOAA Chart: 11382                           Latitude:   30° 22.5' N (  30.37500)
USGS Quad:  WEST PENSACOLA                  Longitude:  87° 16.6' W ( -87.27670)


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


                         BENCH MARK STAMPING:  W 163 1955
                         DESIGNATION:          W 163

MONUMENTATION:           Bench Mark disk                       VM#:        10290
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  BG1823
SETTING CLASSIFICATION:  Building foundation                   OPUS PID:        
LATITUDE:   30° 22.2' N (  30.37000)          LONGITUDE:  87° 16.6' W ( -87.27670)


The bench mark is a disk set vertically in the west face of the concrete
foundation of the guard building # 666 located at main entrance to the Pensacola
Naval Air Station, 0.30 m (1.0 ft) south of the NW corner of the building, and
0.30 m (1.0 ft) above the level of the sidewalk.  

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  4 of  7

                                                                                
Station ID: 8729871                         PUBLICATION DATE:  02/05/2004
Name:       WARRINGTON, BAYOU GRANDE                          
            FL
NOAA Chart: 11382                           Latitude:   30° 22.5' N (  30.37500)
USGS Quad:  WEST PENSACOLA                  Longitude:  87° 16.6' W ( -87.27670)


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


                         BENCH MARK STAMPING:  P 26 RESET 1984
                         DESIGNATION:          P 26 RESET

MONUMENTATION:           Bench Mark disk                       VM#:        10291
AGENCY:                  National Geodetic Survey (NGS)        IDB PID#:  BG3667
SETTING CLASSIFICATION:  Concrete bridge railing               OPUS PID:        
LATITUDE:   30° 22.2' N (  30.37000)          LONGITUDE:  87° 16.6' W ( -87.27670)


The bench mark is a disk set in the top of the concrete railing located at the
SW corner of the Navy Boulevard bridge over Bayou Grande, 13 m (42 ft) west of
the centerline of the road, 1 m (4 ft) south of the south bridge abutment, and 1
m (3 ft) above the level of the road.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  5 of  7

                                                                                
Station ID: 8729871                         PUBLICATION DATE:  02/05/2004
Name:       WARRINGTON, BAYOU GRANDE                          
            FL
NOAA Chart: 11382                           Latitude:   30° 22.5' N (  30.37500)
USGS Quad:  WEST PENSACOLA                  Longitude:  87° 16.6' W ( -87.27670)


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


                         BENCH MARK STAMPING:  V 163 RESET 1984
                         DESIGNATION:          V 163 RESET 1984

MONUMENTATION:           Bench Mark disk                       VM#:        10292
AGENCY:                  National Geodetic Survey (NGS)        IDB PID#:  BG3666
SETTING CLASSIFICATION:  Concrete bridge guardrail             OPUS PID:        
LATITUDE:   30° 22.4' N (  30.37330)          LONGITUDE:  87° 16.5' W ( -87.27500)


The bench mark is a disk set in the top of the concrete railing located at the
NE corner of the Navy Boulevard bridge over Bayou Grande, 4 m (12.0 ft) west of
the bridge bannister, 2.13 m (7.0 ft) south of the north end of the railing, and
1 m (3 ft) above road level.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  6 of  7

                                                                                
Station ID: 8729871                         PUBLICATION DATE:  02/05/2004
Name:       WARRINGTON, BAYOU GRANDE                          
            FL
NOAA Chart: 11382                           Latitude:   30° 22.5' N (  30.37500)
USGS Quad:  WEST PENSACOLA                  Longitude:  87° 16.6' W ( -87.27670)


                            T I D A L   D A T U M S 


Tidal datums at WARRINGTON, BAYOU GRANDE based on:

     LENGTH OF SERIES:      4 MONTHS
     TIME PERIOD:           March 1977 - June 1977
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  8729840 PENSACOLA, PENSACOLA BAY


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

     MEAN HIGHER HIGH WATER                     MHHW   =  0.368
     MEAN HIGH WATER                            MHW    =  0.353
     MEAN TIDE LEVEL                            MTL    =  0.185
     MEAN SEA LEVEL                             MSL    =  0.181
     North American Vertical Datum              NAVD88 =  0.088
     MEAN LOW WATER                             MLW    =  0.016
     MEAN LOWER LOW WATER                       MLLW   =  0.000

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     Q 26 1942                                   2.906    2.553
     9871 A 1977                                 2.919    2.566
     W 163 1955                                  3.457    3.104
     P 26 RESET 1984                             3.986    3.633
     V 163 RESET 1984                            4.093    3.740


Foot Notes:

Elelvations for benchmarks"P 26 RESET 1984" and "V 163 RESET 1984" are based on
a single differential leveling connection, and do not meet quality control
standards of NOS. Caution should be used when deriving elevations from these
benchmarks

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

                                                                                
Station ID: 8729871                         PUBLICATION DATE:  02/05/2004
Name:       WARRINGTON, BAYOU GRANDE                          
            FL
NOAA Chart: 11382                           Latitude:   30° 22.5' N (  30.37500)
USGS Quad:  WEST PENSACOLA                  Longitude:  87° 16.6' W ( -87.27670)


                             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 8729871 WARRINGTON, BAYOU GRANDE, FL

Revised: 08/08/2018
NOAA / National Ocean Service
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