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Bench Mark Sheet for 8729039, PARKER BRANCH, LAIRD BAYOU, EAST BAY 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Superseded Epoch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Small blue map location marker Unpublished bench mark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  6

                                                                                
Station ID: 8729039                         PUBLICATION DATE:  02/05/2004
Name:       PARKER BRANCH, LAIRD BAYOU, EAST BAY              
            FL
NOAA Chart: 11389                           Latitude:   30°  8.2' N (  30.13670)
USGS Quad:  SPRINGFIELD                     Longitude:  85° 31.0' W ( -85.51670)


To reach the tidal bench marks from the intersection of State Road 22 and U.S.
Highway 98 in Callaway, proceed 9.5 km (5.9 mi) east on State Road 22 to the
intersection of Highway 2297, then turn right and proceed south on Highway 2297
for 1.8 km (1.1 mi) to Old Bicycle Road, then turn right and proceed west on Old
Bicycle Road for 1.1 km (0.7 mi) to the bridge over Parker Branch.  The bench
marks are along Old Bicycle Road.  The tide gage and staff were located on the
SW corner of the bridge.


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


                 PRIMARY BENCH MARK STAMPING:  9039 A 1976
                         DESIGNATION:          872 9039 A TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         9950
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  BE1719
SETTING CLASSIFICATION:  Copper-clad steel rod                 OPUS PID:        
LATITUDE:   30°  8.3' N (  30.13830)          LONGITUDE:  85° 31.0' W ( -85.51670)


The primary bench mark is a disk located 122 m (400 ft) west of bench mark 9039
B 1976, 41 m (135 ft) NNW of the SW corner of the wooden bridge over Parker
Branch, 11 m (36 ft) north of the centerline of Old Bicycle Road, and 0.58 m
(1.9 ft) north of a telephone pole.  The bench mark is set 30 cm (1 ft) below
ground level, crimped to the top of a copper-clad steel rod driven 12.2 m (40
ft) to refusal, and encased in PVC pipe and concrete kickblock.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  2 of  6

                                                                                
Station ID: 8729039                         PUBLICATION DATE:  02/05/2004
Name:       PARKER BRANCH, LAIRD BAYOU, EAST BAY              
            FL
NOAA Chart: 11389                           Latitude:   30°  8.2' N (  30.13670)
USGS Quad:  SPRINGFIELD                     Longitude:  85° 31.0' W ( -85.51670)


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


                         BENCH MARK STAMPING:  9039 B 1976
                         DESIGNATION:          872 9039 B TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         9951
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  BE1718
SETTING CLASSIFICATION:  Copper-clad steel rod                 OPUS PID:        
LATITUDE:   30°  8.3' N (  30.13830)          LONGITUDE:  85° 30.8' W ( -85.51330)


The bench mark is a disk located 137 m (449 ft) WNW of bench mark 9039 C 1976,
122 m (400 ft) ESE  of bench mark 9039 A 1976, 16 m (53 ft) west of the extended
centerline of a paved road, 13.11 m (43.0 ft) north of the centerline of Old
Bicycle Road, 1.92 m (6.3 ft) NE of a telephone pole with a witness sign, and
0.3 m (1 ft) south of a witness post.  The bench mark is set 15 cm (0.5 ft)
below ground level, crimped to the top of a copper-clad steel rod driven 12.2 m
(40 ft) to refusal and encased in PVC pipe and concrete kickblock.



                         BENCH MARK STAMPING:  9039 C 1976
                         DESIGNATION:          872 9039 C TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         9952
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  BE1717
SETTING CLASSIFICATION:  Copper-clad steel rod                 OPUS PID#: BE1717
LATITUDE:   30°  8.3' N (  30.13830)          LONGITUDE:  85° 30.8' W ( -85.51330)


The bench mark is a disk located 137 m (449 ft) ESE of bench mark 9039 B 1976,
69 m (228 ft) WSW of bench mark 9039 D 1976, 13.90 m (45.6 ft) south of the
centerline of Old Bicycle Road, and 1 m (3 ft) SW of a powerline pole with a
witness sign.  The bench mark is set 24 cm (0.8 ft) below ground level, crimped
to the top of a copper-clad steel rod driven 10.1 m (33 ft) to refusal, and
encased in PVC pipe and concrete kickblock.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  3 of  6

                                                                                
Station ID: 8729039                         PUBLICATION DATE:  02/05/2004
Name:       PARKER BRANCH, LAIRD BAYOU, EAST BAY              
            FL
NOAA Chart: 11389                           Latitude:   30°  8.2' N (  30.13670)
USGS Quad:  SPRINGFIELD                     Longitude:  85° 31.0' W ( -85.51670)


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


                         BENCH MARK STAMPING:  9039 D 1976
                         DESIGNATION:          872 9039 D TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         9953
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  BE1716
SETTING CLASSIFICATION:  Copper-clad steel rod                 OPUS PID:        
LATITUDE:   30°  8.3' N (  30.13830)          LONGITUDE:  85° 30.7' W ( -85.51170)


The bench mark is a disk located located 279 m (915 ft) east of the SW corner of
the wooden bridge over Parker Branch, 69 m (228 ft) ENE of bench mark 9039 C
1976, 14 m (45 ft) north of the centerline of Old Bicycle Road, and 2 m (7 ft)
NNW of power pole # E371SPP730 with a witness sign.  The bench mark is crimped
to the top of a copper-clad steel rod driven 12.2 m (40 ft) to refusal, and
encased in a PVC pipe and concrete kickblock.  

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  4 of  6

                                                                                
Station ID: 8729039                         PUBLICATION DATE:  02/05/2004
Name:       PARKER BRANCH, LAIRD BAYOU, EAST BAY              
            FL
NOAA Chart: 11389                           Latitude:   30°  8.2' N (  30.13670)
USGS Quad:  SPRINGFIELD                     Longitude:  85° 31.0' W ( -85.51670)


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


                         BENCH MARK STAMPING:  C 2 1977
                         DESIGNATION:          C 2 FLDNR

MONUMENTATION:           Bench Mark disk                       VM#:        17170
AGENCY:                  Florida Department of Natural Resources
                         (FLDNR)                               IDB PID#:  BE1720
SETTING CLASSIFICATION:  Concrete culvert head wall            OPUS PID:        
LATITUDE:   30°  8.0' N (  30.13330)          LONGITUDE:  85° 30.4' W ( -85.50670)


The benchmark is set in the top of a concrete culvert head wall, 0.8 km (0.5 mi)
south along State Road 167 from Old Bicycle Road, 4.85 m (15.9 ft) SW of the
centerline of the highway, 20.73 m (68.0 ft) north of a powerline pole, and 3.35
m (11.0 ft) NW of a witness post.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  5 of  6

                                                                                
Station ID: 8729039                         PUBLICATION DATE:  02/05/2004
Name:       PARKER BRANCH, LAIRD BAYOU, EAST BAY              
            FL
NOAA Chart: 11389                           Latitude:   30°  8.2' N (  30.13670)
USGS Quad:  SPRINGFIELD                     Longitude:  85° 31.0' W ( -85.51670)


                            T I D A L   D A T U M S 


Tidal datums at PARKER BRANCH, LAIRD BAYOU, EAST BAY based on:

     LENGTH OF SERIES:      2 MONTHS
     TIME PERIOD:           August 1976 - September 1976
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  8729015 ALLANTON, EAST BAY


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

     MEAN HIGHER HIGH WATER                     MHHW   =  0.438
     MEAN HIGH WATER                            MHW    =  0.412
     MEAN TIDE LEVEL                            MTL    =  0.219
     MEAN SEA LEVEL                             MSL    =  0.219
     North American Vertical Datum              NAVD88 =  0.178
     MEAN LOW WATER                             MLW    =  0.025
     MEAN LOWER LOW WATER                       MLLW   =  0.000

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     9039 A 1976                                 1.083    0.671
     9039 B 1976                                 2.042    1.630
     9039 C 1976                                 3.473    3.061
     9039 D 1976                                 4.449    4.037
     C 2 1977                                    2.360    1.948


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

                                                                                
Station ID: 8729039                         PUBLICATION DATE:  02/05/2004
Name:       PARKER BRANCH, LAIRD BAYOU, EAST BAY              
            FL
NOAA Chart: 11389                           Latitude:   30°  8.2' N (  30.13670)
USGS Quad:  SPRINGFIELD                     Longitude:  85° 31.0' W ( -85.51670)


                             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 8729039 PARKER BRANCH, LAIRD BAYOU, EAST BAY, FL

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