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

                                                                                
Station ID: 8729678                         PUBLICATION DATE:  04/21/2003
Name:       NAVARRE BEACH                                     
            FL
NOAA Chart: 11382                           Latitude:   30° 22.6' N (  30.37670)
USGS Quad:  NAVARRE                         Longitude:  86° 51.9' W ( -86.86500)


To reach the tidal bench marks from the toll booth in Navarre at the
intersection of U.S. Highway 98 and State Road 399, proceed south on State Road
399 for 2.6 km (1.6 mi) to Navarre Beach Fishing Pier.  The bench marks are near
the parking lot and motel at the pier and along State Road 399.  The tide gage
and staff were on the end of Navarre Beach Fishing Pier.


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


                 PRIMARY BENCH MARK STAMPING:  9678 H 1977
                         DESIGNATION:          872 9678 H TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:        10190
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  BG3467
SETTING CLASSIFICATION:  Galvanized steel rod                  OPUS PID:        
LATITUDE:   30° 22.8' N (  30.38000)          LONGITUDE:  86° 51.9' W ( -86.86500)


The primary bench mark is a disk located 11.55 m (37.9 ft) NW of the SW corner
of the Navarre Beach Fishing Pier restaurant, 310.82 m (5.5 ft) SW of the NW
corner of the restaurant, 0.61 m (2.0 ft) south of the boardwalk leading to the
west entrance to the restaurant, and 0.3 m (1 ft) north of a witness post.  The
bench mark is set 0.3 m (1 ft) below ground level, crimped to a galvanized steel
rod driven 17 m (56 ft) to refusal, and encased in a PVC pipe.

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

                                                                                
Station ID: 8729678                         PUBLICATION DATE:  04/21/2003
Name:       NAVARRE BEACH                                     
            FL
NOAA Chart: 11382                           Latitude:   30° 22.6' N (  30.37670)
USGS Quad:  NAVARRE                         Longitude:  86° 51.9' W ( -86.86500)


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


                         BENCH MARK STAMPING:  1 1973
                         DESIGNATION:          872 9678 TIDAL 1

MONUMENTATION:           Tidal Station disk                    VM#:        10188
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  BG3683
SETTING CLASSIFICATION:  Retaining wall                        OPUS PID:        
LATITUDE:   30° 22.8' N (  30.38000)          LONGITUDE:  86° 52.0' W ( -86.86670)


The bench mark is a disk set flush in the top of a concrete retaining wall,
11.55 m (37.9 ft) SSE of a utility pole at the NE corner of the motel parking
lot, 11.31 m (37.1 ft) NE of the NE corner of Navarre Beach Motel, 3.66 m (12.0
ft) north of the centerline of the entrance drive to the motel, 0.24 m (0.8 ft)
east of the west end of the retaining wall, and 0.12 m (0.4 ft) above the level
of the parking lot.



                         BENCH MARK STAMPING:  2 1973
                         DESIGNATION:          872 9678 TIDAL 2

MONUMENTATION:           Tidal Station disk                    VM#:        10189
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  BG3684
SETTING CLASSIFICATION:  Concrete sewer cover                  OPUS PID:        
LATITUDE:   30° 22.9' N (  30.38170)          LONGITUDE:  86° 52.0' W ( -86.86670)


The bench mark is a disk set flush in the top of a 1.83 m (6 ft) diameter
concrete sewer cover, 66 m (215 ft) west of the centerline of the road to the
fishing pier, 14.33 m (47.0 ft) SSE of the centerline of State Road 399, 4.51 m
(14.8 ft) WNW of a utility pole, and 0.12 m (0.4 ft) south of the north edge of
the sewer cover.

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

                                                                                
Station ID: 8729678                         PUBLICATION DATE:  04/21/2003
Name:       NAVARRE BEACH                                     
            FL
NOAA Chart: 11382                           Latitude:   30° 22.6' N (  30.37670)
USGS Quad:  NAVARRE                         Longitude:  86° 51.9' W ( -86.86500)


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


                         BENCH MARK STAMPING:  9678 J 1977
                         DESIGNATION:          872 9678 J TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:        10191
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  BG3465
SETTING CLASSIFICATION:  Galvanized steel rod                  OPUS PID:        
LATITUDE:   30° 22.8' N (  30.38000)          LONGITUDE:  86° 52.0' W ( -86.86670)


The bench mark is a disk located 60 m (196 ft) north of the centerline of the
entrance road to Navarre Beach Motel, 33.07 m (108.5 ft) west of the centerline
of the entrance drive to the fishing pier, and 0.21 m (0.7 ft) south of a
witness post.  The bench mark is crimped to a galvanized steel rod driven 17 m
(56 ft) to refusal, and encased in a PVC pipe projecting 0.09 m (0.3 ft) above
ground level.



                         BENCH MARK STAMPING:  9678 K 1977
                         DESIGNATION:          872 9678 K TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:        10192
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  BG3464
SETTING CLASSIFICATION:  Galvanized steel rod                  OPUS PID:        
LATITUDE:   30° 22.9' N (  30.38170)          LONGITUDE:  86° 51.9' W ( -86.86500)


The bench mark is a disk located near the entrance road to Navarre Beach Fishing
Pier, 10.39 m (34.1 ft) SSE of the centerline of State Road 399, 8.53 m (28.0
ft) ESE of the centerline of the pier entrance road, 1.22 m (4.0 ft) east of a
powerline anchor pole, and 0.49 m (1.6 ft) north of a witness post.  The bench
mark is crimped to a galvanized steel rod driven 17 m (56 ft) to refusal, and
encased in a PVC pipe projecting 0.09 m (0.3 ft) above ground level.

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

                                                                                
Station ID: 8729678                         PUBLICATION DATE:  04/21/2003
Name:       NAVARRE BEACH                                     
            FL
NOAA Chart: 11382                           Latitude:   30° 22.6' N (  30.37670)
USGS Quad:  NAVARRE                         Longitude:  86° 51.9' W ( -86.86500)


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


                         BENCH MARK STAMPING:  9678 L 1977
                         DESIGNATION:          872 9678 L TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:        10193
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  BG3463
SETTING CLASSIFICATION:  Galvanized steel rod                  OPUS PID:        
LATITUDE:   30° 22.9' N (  30.38170)          LONGITUDE:  86° 51.7' W ( -86.86170)


The bench mark is a disk located 9.24 m (30.3 ft) south of the centerline of
State Road 399, 7 m (23 ft) east of the centerline of the road leading to
Navarre Beach Pavilion, 3.63 m (11.9 ft) NNE of a stop sign, 1.10 m (3.6 ft) SE
of a utility pole supporting traffic lights, and 0.37 m (1.2 ft) west of a
witness post.  The bench mark is crimped to a galvanized steel rod driven 17 m
(56 ft) to refusal, and encased in a PVC pipe projecting 0.09 m (0.3 ft) above
ground level.

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

                                                                                
Station ID: 8729678                         PUBLICATION DATE:  04/21/2003
Name:       NAVARRE BEACH                                     
            FL
NOAA Chart: 11382                           Latitude:   30° 22.6' N (  30.37670)
USGS Quad:  NAVARRE                         Longitude:  86° 51.9' W ( -86.86500)


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


                         BENCH MARK STAMPING:  B 395 1981
                         DESIGNATION:          B 395

MONUMENTATION:           Tidal Station disk                    VM#:        10194
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  BG3466
SETTING CLASSIFICATION:  Stainless steel rod                   OPUS PID:        
LATITUDE:   30° 22.8' N (  30.38000)          LONGITUDE:  86° 51.9' W ( -86.86500)


The bench mark is a disk located near Navarre Beach Motel, 24 m (79 ft) SSE of a
power pole, 13 m (42 ft) SSE of Bench Mark 1 1973, 11 m (36 ft) ESE of the NE
corner of the motel, 9 m (30 ft) south of the centerline of the entrance drive
to the motel, and 0.34 m (1.1 ft) north of witness post.  The bench mark is set
level with the ground, crimped to a stainless steel rod driven 27 m (88 ft) to
refusal, and encased in a PVC pipe with an aluminum access cover.



                         BENCH MARK STAMPING:  9678 A
                         DESIGNATION:          872 9678 A TIDAL

MONUMENTATION:           Survey disk                           VM#:        10195
AGENCY:                  Florida Highway Department (FLHD)     IDB PID#:  BG3685
SETTING CLASSIFICATION:  Concrete bridge railing               OPUS PID#: BG3685
LATITUDE:   30° 23.2' N (  30.38670)          LONGITUDE:  86° 51.7' W ( -86.86170)


The bench mark is a disk set in the top of the concrete railing at the SE corner
of the south bridge over Santa Rosa Sound, 5.49 m (18.0 ft) east of the
centerline of State Road 399, 0.21 m (0.7 ft) north of the south end of the
railing, and 0.88 m (2.9 ft) above the level of the highway.

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

                                                                                
Station ID: 8729678                         PUBLICATION DATE:  04/21/2003
Name:       NAVARRE BEACH                                     
            FL
NOAA Chart: 11382                           Latitude:   30° 22.6' N (  30.37670)
USGS Quad:  NAVARRE                         Longitude:  86° 51.9' W ( -86.86500)


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


                         BENCH MARK STAMPING:  9678 B
                         DESIGNATION:          872 9678 B TIDAL

MONUMENTATION:           Survey disk                           VM#:        10196
AGENCY:                  Florida Highway Department (FLHD)     IDB PID#:  BG3686
SETTING CLASSIFICATION:  Concrete bridge railing               OPUS PID#: BG3686
LATITUDE:   30° 23.3' N (  30.38830)          LONGITUDE:  86° 51.8' W ( -86.86330)


The bench mark is a disk set in the top of the concrete railing at the NW corner
of the south bridge over the Santa Rosa Sound, 5.49 m (18.0 ft) west of the
centerline of State Highway 399, 0.18 m (0.6 ft) south of the north end of the
railing, and 0.88 m (2.9 ft) above the level of the highway.

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

                                                                                
Station ID: 8729678                         PUBLICATION DATE:  04/21/2003
Name:       NAVARRE BEACH                                     
            FL
NOAA Chart: 11382                           Latitude:   30° 22.6' N (  30.37670)
USGS Quad:  NAVARRE                         Longitude:  86° 51.9' W ( -86.86500)


                            T I D A L   D A T U M S 


Tidal datums at NAVARRE BEACH based on:

     LENGTH OF SERIES:      10 Years
     TIME PERIOD:           January 1978 - December 1987
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  8729840 PENSACOLA, PENSACOLA BAY


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

     HIGHEST OBSERVED WATER LEVEL (12/31/1986)         =  0.898
     MEAN HIGHER HIGH WATER                     MHHW   =  0.421
     MEAN HIGH WATER                            MHW    =  0.401
     MEAN TIDE LEVEL                            MTL    =  0.209
     MEAN SEA LEVEL                             MSL    =  0.201
     North American Vertical Datum              NAVD88 =  0.144
     MEAN LOW WATER                             MLW    =  0.016
     MEAN LOWER LOW WATER                       MLLW   =  0.000
     LOWEST  OBSERVED WATER LEVEL (02/29/1984)         = -0.602

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     9678 H 1977                                 3.970    3.569
     1 1973                                      3.877    3.476
     2 1973                                      2.113    1.712
     9678 J 1977                                 2.541    2.140
     9678 K 1977                                 1.692    1.291
     9678 L 1977                                 2.798    2.397
     B 395 1981                                  3.722    3.321
     9678 A                                      5.100    4.699
     9678 B                                      5.085    4.684


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

                                                                                
Station ID: 8729678                         PUBLICATION DATE:  04/21/2003
Name:       NAVARRE BEACH                                     
            FL
NOAA Chart: 11382                           Latitude:   30° 22.6' N (  30.37670)
USGS Quad:  NAVARRE                         Longitude:  86° 51.9' W ( -86.86500)


                             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.