Superseded Bench Mark Sheet for 8729511, DESTIN, EAST PASS FL

Present Epoch

Printable version

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
Datums Page                                                        Page  1 of  5

                                                   PUBLICATION DATE:  12/05/1988
Station ID: 8729511                                SUPERCEDED DATE:   04/21/2003
Name:       DESTIN, EAST PASS, CHOCTAWHATCHEE BAY             
            FLORIDA
NOAA Chart: 11388                                  Latitude:         30° 23.7' N
USGS Quad:  FORT WALTON BEACH                      Longitude:        86° 30.8' W


To reach the tidal bench marks from the intersection of U.S. Highway 98 and
State Highway 85 in Fort Walton Beach, proceed east on U.S. Highway 98 for 5.9
miles (9.5 km) to the E end of the bridge over East Pass.  The bench marks are
along U.S. Highway 98.  The tide gage and staff were located 131 feet (40 m)
north of the NE corner of the bridge.


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


                 PRIMARY BENCH MARK STAMPING:   

MONUMENTATION:                                                     VM#:    10145
AGENCY:                                                            PID:         
SETTING CLASSIFICATION:  






                         BENCH MARK STAMPING:  1 1941

MONUMENTATION:           Survey Disk                               VM#:    10139
AGENCY:                                                            PID#:  BG2107
SETTING CLASSIFICATION:  Concrete Curb


The bench mark is 5.9 miles (9.5 km) east along U.S. Highway 98 from the
intersection with State Highway 85 at Fort Walton Beach, 0.55 mile (0.89 km)
west along Highway 98 from the Episcopal Church in Destin, 40.0 feet (12.2 m)
west of the east end of the bridge over East Pass, 12.75 feet (3.89 m) south of
the centerline of the highway, set into the concrete curb on the south side of
the bridge, and level with the road surface.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  2 of  5

                                                   PUBLICATION DATE:  12/05/1988
Station ID: 8729511                                SUPERCEDED DATE:   04/21/2003
Name:       DESTIN, EAST PASS, CHOCTAWHATCHEE BAY             
            FLORIDA
NOAA Chart: 11388                                  Latitude:         30° 23.7' N
USGS Quad:  FORT WALTON BEACH                      Longitude:        86° 30.8' W


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


                         BENCH MARK STAMPING:  2 1941

MONUMENTATION:           Survey Disk                               VM#:    10140
AGENCY:                                                            PID#:  BG2105
SETTING CLASSIFICATION:  Concrete Abutment


The bench mark is 5.9 miles (9.5 km) east along U.S. Highway 98 from the
intersection with State Highway 85 at Fort Walton Beach, 0.4 mile (0.6 km) west
of the Post Office at Destin, 14.5 feet (4.4 m) north of the centerline of the
highway, set in the top of the north end of the east abutment of the bridge over
East Pass and 0.8 foot (0.2 km) above the level of the bridge floor.



                         BENCH MARK STAMPING:  26.488 LC 1934

MONUMENTATION:           Survey Disk                               VM#:    10141
AGENCY:                                                            PID#:  BG2106
SETTING CLASSIFICATION:  Concrete Abutment


The bench mark is 5.9 miles (9.5 km) east along U.S. Highway 78 from the
intersection with State Highway 85 at Fort Walton Beach 0.55 miles (0.89 km)
west along U.S. Highway 98 from the Episcopal Church in Destin, 14.0 feet (4.3
m), south of the centerline of the highway, set in the top of the south end of
the east abutment of bridge over East Pass, and level with the road surface.



                         BENCH MARK STAMPING:  9505 A 1977

MONUMENTATION:           Survey Disk                               VM#:    10142
AGENCY:                                                            PID#:  BG3656
SETTING CLASSIFICATION:  Concrete Foundation


The bench mark is at Her Majestry II charter boat service office, 150.0 feet
(45.7 m) south of the white wall adjoining Nicks Place, 102.0 feet (31.1 m) ENE
of the centerline of the dirt drive leading to the water, 21.9 feet (6.7 m) west
of a power pole at the SW corner of the building, and set in the concrete
foundation.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  3 of  5

                                                   PUBLICATION DATE:  12/05/1988
Station ID: 8729511                                SUPERCEDED DATE:   04/21/2003
Name:       DESTIN, EAST PASS, CHOCTAWHATCHEE BAY             
            FLORIDA
NOAA Chart: 11388                                  Latitude:         30° 23.7' N
USGS Quad:  FORT WALTON BEACH                      Longitude:        86° 30.8' W


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


                         BENCH MARK STAMPING:  9505 B 1977

MONUMENTATION:           Survey Disk                               VM#:    10143
AGENCY:                                                            PID#:  BG3657
SETTING CLASSIFICATION:  Concrete Foundation


The bench mark is at Destin, 147.0 feet (44.8 m) SSW of the SW corner of the
Destin Chamber of Commerce building, 54.5 feet (16.6 m) NNE of the NE corner of
the building housing the Pizza and Subs Restaurant, and Pauls Interiors
Furniture Shop, 32.0 feet (9.8 m) south of the centerline of the eastbound lane
of U.S. Highway 98, 11.2 feet (3.4 m) west of the NW corner of the Blue Room
Restaurant, and set into the SE corner of a concrete signpost foundation.



                         BENCH MARK STAMPING:  NO STAMPING 1

MONUMENTATION:           Survey Disk                               VM#:    10144
AGENCY:                                                            PID:         
SETTING CLASSIFICATION:  Concrete Abutment


The bench mark is 5.9 miles (10 km) east along U.S Highway 98 from the
intersection with State Highway 85 at Fort Walton Beach, 0.55 mile (0.88 km)
west along U.S. Highway 98 form the Episcopal Church in Destin, and 101.0 feet
(30.8 km) ESE of the westbound land of the highway bridge over East Pass.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  4 of  5

                                                   PUBLICATION DATE:  12/05/1988
Station ID: 8729511                                SUPERCEDED DATE:   04/21/2003
Name:       DESTIN, EAST PASS, CHOCTAWHATCHEE BAY             
            FLORIDA
NOAA Chart: 11388                                  Latitude:         30° 23.7' N
USGS Quad:  FORT WALTON BEACH                      Longitude:        86° 30.8' W


                            T I D A L   D A T U M S 


Tidal datums at DESTIN, EAST PASS, CHOCTAWHATCHEE BAY based on:

     LENGTH OF SERIES:      4 MONTHS
     TIME PERIOD:           MAY-AUGUST 1977
     TIDAL EPOCH:           1960-1978
     CONTROL TIDE STATION:  8729840 PENSALCOLA


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

     HIGHEST OBSERVED WATER LEVEL (09/04/1977)         =   1.86
     MEAN HIGHER HIGH WATER                     MHHW   =   0.51
     MEAN HIGH WATER                            MHW    =   0.48
     MEAN TIDE LEVEL                            MTL    =   0.27
     MEAN LOW WATER                             MLW    =   0.05
     MEAN LOWER LOW WATER                       MLLW   =   0.00
   * NATIONAL GEODETIC VERTICAL DATUM           NGVD29 =  -0.28
     LOWEST  OBSERVED WATER LEVEL (04/28/1977)         =  -0.27

   * NGVD reference based on adjustment of 1957 and NOS levels of 1977. 
North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In FEET above:

     Stamping or Designation                    MLLW        MHW

     0                                           0.00      0.00
     1 1941                                     26.26     25.78
     2 1941                                     27.39     26.91
     26.488 LC 1934                             26.20     25.72
     9505 A 1977                                 5.19      4.71
     9505 B 1977                                20.35     19.87
     NO STAMPING 1                              28.22     27.74


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

                                                   PUBLICATION DATE:  12/05/1988
Station ID: 8729511                                SUPERCEDED DATE:   04/21/2003
Name:       DESTIN, EAST PASS, CHOCTAWHATCHEE BAY             
            FLORIDA
NOAA Chart: 11388                                  Latitude:         30° 23.7' N
USGS Quad:  FORT WALTON BEACH                      Longitude:        86° 30.8' 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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