U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
Datums Page                                                        Page  1 of  7

                                                                                
Station ID: 8729840                                PUBLICATION DATE:  02/09/2009
Name:       PENSACOLA, PENSACOLA BAY                          
            FLORIDA
NOAA Chart: 11383                                  Latitude:         30° 24.2' N
USGS Quad:  PENSACOLA                              Longitude:        87° 12.7' W


To reach the tidal bench marks in Pensacola, FL from the intersection of
Business 98/Garden Street and Jefferson Street, south on Jefferson Street for
0.74 km (0.45 mi).  The bench marks are located in a green zone in a City
parking lot in betweeen Cedar Street and Gimble Street and along Jefferson
Street. The tide gauge is located on the east side of the pier, near the NE
corner of the large parking area.


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


                 PRIMARY BENCH MARK STAMPING:  9840 M 1978
                         DESIGNATION:          872 9840 M TIDAL

MONUMENTATION:           Tidal Station disk                        VM#:     1568
AGENCY:                  National Ocean Service (NOS)              PID#:  BG4867
SETTING CLASSIFICATION:  Stainless steel rod


The primary bench mark is a disk set in the grassy nole on the east side of
Jefferson Street in between the sidewalk and the parking lot, 63.00 m (206.7 ft)
south of the centerline of Cedar Street, 35.40 m (116.1 ft) NNW of the
centerline of Gimble Street, 9.45 m (31.0 ft) ENE of the centerline of south
Jefferson Street, and 0.17 m (0.56 ft) east of a witness post. The bench mark is
set 15 cm (0.5 ft) below ground level, crimped to the top of a stainless steel
rod driven 7.0 m (23 ft), and encased in a 5-inch PVC pipe with aluminum cover
and concrete kickblock.  Note:  SW edge of disk is bent down.



                         BENCH MARK STAMPING:  8 1923
                         DESIGNATION:          872 9840  TIDAL 8

MONUMENTATION:           Tidal Station disk                        VM#:     1558
AGENCY:                  US Coast and Geodetic Survey (USC&GS)     PID#:  BG1732
SETTING CLASSIFICATION:  Concrete foundation


The bench mark is a disk set vertically in the south face of the concrete
foundation of the T. T. Wentworth Building, 17.17 m (56.3 ft) east of the
centerline of Jefferson Street, 14.94 m (49.0 ft) east of the east curb line of
Jefferson Street, 10.30 m (33.8 ft) west of the centerline of the south entrance
to the T. T. Wentworth Building, 9.14 m (30.0 ft) north of the north curb of
Zarraggossa Street, 0.24 m (0.79 ft) east of the SW corner of the building, and
0.27 m (0.89 ft) above ground.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  2 of  7

                                                                                
Station ID: 8729840                                PUBLICATION DATE:  02/09/2009
Name:       PENSACOLA, PENSACOLA BAY                          
            FLORIDA
NOAA Chart: 11383                                  Latitude:         30° 24.2' N
USGS Quad:  PENSACOLA                              Longitude:        87° 12.7' W


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


                         BENCH MARK STAMPING:  G 9 1918 13.271
                         DESIGNATION:          G 9

MONUMENTATION:           Tidal Station disk                        VM#:     1561
AGENCY:                  US Coast and Geodetic Survey (USC&GS)     PID#:  BG1731
SETTING CLASSIFICATION:  Building


The bench mark is a disk set vertically in the south face of the Escambia County
Courthouse, 19.10 m (62.7 ft) west of the west curb of Palafox Street, 4.72 m
(15.5 ft) north of the north curb of Government Street, 0.37 m (1.2 ft) west of
the SE corner of the building, and 0.76 m (2.5 ft) above the level of the walk.



                         BENCH MARK STAMPING:  11 1923
                         DESIGNATION:          872 9840 TIDAL 11

MONUMENTATION:           Tidal Station disk                        VM#:     1562
AGENCY:                  US Coast and Geodetic Survey (USC&GS)     PID#:  BG1723
SETTING CLASSIFICATION:  Concrete doorsill


The bench mark is a disk set in the top of the west end of the north concrete
door sill of a vacant building 115 (used to be a meat packing company) located
at the SW corner of the intersection of Garden and Tarragona, 13.87 m (45.5 ft)
west of the west curb of Tarragona Street, 6.60 m (21.7 ft) east of the NW
corner of the vacant building, 4.88 m (16.0 ft) south of the south curb of
Garden Street, and 0.24 m (0.79 ft) above the level of the sidewalk.

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

                                                                                
Station ID: 8729840                                PUBLICATION DATE:  02/09/2009
Name:       PENSACOLA, PENSACOLA BAY                          
            FLORIDA
NOAA Chart: 11383                                  Latitude:         30° 24.2' N
USGS Quad:  PENSACOLA                              Longitude:        87° 12.7' W


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


                         BENCH MARK STAMPING:  1930
                         DESIGNATION:          872 9840 TIDAL BASIC

MONUMENTATION:           Tidal Station disk                        VM#:     1563
AGENCY:                  US Coast and Geodetic Survey (USC&GS)     PID#:  BG1730
SETTING CLASSIFICATION:  Concrete monument


The bench mark is a disk set in the top of a 0.46 m (1.51 ft) x 0.46 m (1.51 ft)
concrete post projecting 0.64 m (2.1 ft) on the grounds of the City Plaza, 34.50
m (113.2 ft) south of the south curb line of Government Street, 30.73 m (100.8
ft) NW of the NW corner of the granite base of William Dudley Chipley Memorial,
and 9.75 m (32.0 ft) east of the east curb line of Palafox Street.



                         BENCH MARK STAMPING:  12 1940
                         DESIGNATION:          872 9840 TIDAL 12

MONUMENTATION:           Tidal Station disk                        VM#:     1564
AGENCY:                  US Coast and Geodetic Survey (USC&GS)     PID#:  BG1724
SETTING CLASSIFICATION:  Building


The bench mark is a disk set vertically in the south face of the concrete
foundation of the Courthouse, 13.19 m (43.27 ft) north of the centerline of
Chase Street, 3.65 m (12.0 ft) east of the SW corner of the building, 0.3 m (1.0
ft) west of the west edge of a basement window which is  just west of the
basement entrance, and 0.95 m (3.1 ft) above ground level.

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

                                                                                
Station ID: 8729840                                PUBLICATION DATE:  02/09/2009
Name:       PENSACOLA, PENSACOLA BAY                          
            FLORIDA
NOAA Chart: 11383                                  Latitude:         30° 24.2' N
USGS Quad:  PENSACOLA                              Longitude:        87° 12.7' W


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


                         BENCH MARK STAMPING:  9840 N 1978
                         DESIGNATION:          872 9840 N

MONUMENTATION:           Tidal Station disk                        VM#:     1569
AGENCY:                  National Ocean Survey (NOS)               PID:         
SETTING CLASSIFICATION:  Stainless steel rod


The bench mark is a disk set at the NE corner of the Pensacola News Journal
Building, 13.72 m (45.0 ft) west of the centerline of a monument with five
flags, 9.91 m (32.5 ft) south of the centerline of Romano Street, and 4.88 m
(16.0 ft) east of the NE corner of the News building. The bench mark is crimped
to the top of a stainless steel rod driven 7.0 m (23.0 ft), and encased in
concrete kickblock.



                         BENCH MARK STAMPING:  H 02 1998
                         DESIGNATION:          872 9840 H 02

MONUMENTATION:           Survey disk                               VM#:    16007
AGENCY:                  US Army Corps of Engineers (USE)          PID:         
SETTING CLASSIFICATION:  Concrete bulkhead


The bench mark is set in a concrete bulkhead cap on the east side of the city
marina, 21.86 m (71.72 ft) south of the NE corner of the concrete bulkhead of
the inlet, 7.10 m (23.29 ft) east of the centerline of the road around the
parking lot, 6.18 m (20.28 ft) north of the ne corner of the gauge house, and
0.66 m (2.17 ft) west of the east edge of the concrete bulkhead cap.

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

                                                                                
Station ID: 8729840                                PUBLICATION DATE:  02/09/2009
Name:       PENSACOLA, PENSACOLA BAY                          
            FLORIDA
NOAA Chart: 11383                                  Latitude:         30° 24.2' N
USGS Quad:  PENSACOLA                              Longitude:        87° 12.7' W


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


                         BENCH MARK STAMPING:  9840 R 2003
                         DESIGNATION:          872 9840 R

MONUMENTATION:           Tidal Station disk                        VM#:    17153
AGENCY:                  National Ocean Service (NOS)              PID:         
SETTING CLASSIFICATION:  Concrete bulkhead


The bench mark is a disk set in the concrete bulkhead cap on the east side of
the City Marina, 85.93 m (281.9 ft) SE of the west inside corner of the inlet,
61.0 m (200.1 ft) NW of the NE corner of the concrete bulkhead of the inlet,
14.38 m (47.2 ft) NE of the centerline of Jefferson Street, and 0.69 m (2.3 ft)
SW of the NE edge of the concrete bulkhead cap.



                         BENCH MARK STAMPING:  9840 S 2004
                         DESIGNATION:          872 9840 S

MONUMENTATION:           Tidal Station disk                        VM#:    17738
AGENCY:                  National Ocean Service (NOS)              PID:         
SETTING CLASSIFICATION:  


The benchmark is a disk set in a concrete pier, 0.04 km (0.00 mi) east from the
western edge of the Pilots Pier, 0.5 m (1.6 ft) south from the north edge of the
pier and 0.12 km (0.05 mi) west from the railroad centerline.

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

                                                                                
Station ID: 8729840                                PUBLICATION DATE:  02/09/2009
Name:       PENSACOLA, PENSACOLA BAY                          
            FLORIDA
NOAA Chart: 11383                                  Latitude:         30° 24.2' N
USGS Quad:  PENSACOLA                              Longitude:        87° 12.7' W


                            T I D A L   D A T U M S 


Tidal datums at PENSACOLA, PENSACOLA BAY based on:

     LENGTH OF SERIES:      19 YEARS
     TIME PERIOD:           January 1983 - December 2001
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:   


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

     HIGHEST OBSERVED WATER LEVEL (09/18/1926)         =  2.643
     MEAN HIGHER HIGH WATER                     MHHW   =  0.383
     MEAN HIGH WATER                            MHW    =  0.374
     MEAN TIDE LEVEL                            MTL    =  0.191
     MEAN SEA LEVEL                             MSL    =  0.188
     North American Vertical Datum              NAVD88 =  0.098
     MEAN LOW WATER                             MLW    =  0.008
     MEAN LOWER LOW WATER                       MLLW   =  0.000
     LOWEST  OBSERVED WATER LEVEL (01/06/1924)         = -0.740

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     9840 M 1978                                 1.799    1.425
     8 1923                                      3.930    3.556
     G 9 1918 13.271                             4.084    3.710
     11 1923                                     3.412    3.038
     1930                                        3.845    3.472
     12 1940                                     4.798    4.424
     9840 N 1978                                 2.726    2.352
     H 02 1998                                   2.190    1.816
     9840 R 2003                                 2.156    1.782
     9840 S 2004                                 3.264    2.890


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

                                                                                
Station ID: 8729840                                PUBLICATION DATE:  02/09/2009
Name:       PENSACOLA, PENSACOLA BAY                          
            FLORIDA
NOAA Chart: 11383                                  Latitude:         30° 24.2' N
USGS Quad:  PENSACOLA                              Longitude:        87° 12.7' 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.