Bench Mark Sheet for 8721222, PACKWOOD PLACE 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Superseded Epoch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Small blue map location marker Unpublished bench mark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: 8721222                         PUBLICATION DATE:  11/10/2010
Name:       PACKWOOD PLACE                                    
            FL
NOAA Chart: 11485                           Latitude:   28° 56.4' N (  28.94000)
USGS Quad:  EDGEWATER                       Longitude:  80° 52.2' W ( -80.87000)


To reach the tidal bench marks from the intersection of State Highway A1A and
U.S. Highway 1 in New Smyrna Beach, proceed 16 km (10 mi) east then south on
State Highway A1A to the dirt drive leading south on the east side of the dead
end of State Highway A1A, then 0.2 km (0.1 mi) on the dirt road to another dirt
road leading west to the middle dock of three on Mosquito Lagoon.  The bench
marks are located along State Highway A1A and the dirt road leading south.  The
tide gage and staff were located 19 m (62 ft) west of the shore inside the
northeast corner of the T-section dock.


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


                 PRIMARY BENCH MARK STAMPING:  1222 A 1979
                         DESIGNATION:          872 1222 A TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:        10766
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  AK6908
SETTING CLASSIFICATION:  Copper-clad steel rod                 OPUS PID:        
LATITUDE:   28° 56.5' N (  28.94111)          LONGITUDE:  80° 52.2' W ( -80.86972)


The primary bench mark is a disk located at the Corbett residence on the south
side of the Packwood Clubhouse, 0.91 m (3.0 ft) NE of the east corner of a small
tin shed, 13.41 m (44.0 ft) SW of a wood dock, 9.14 m (30.0 ft) SE of a cedar
tree, and 7.92 m (26.0 ft) south of the east corner of a larger tin shed.
located in the back yard of Brooks Corbetts' residence, 87 m (285 ft) SE of the
restaurant, 13.41 m (44.0 ft) SW of the beginning of the wooden dock on which
the tide gage was located, 9.14 m (30.0 ft) SE of the largest cedar tree in the
vicinity, 7.92 m (26.0 ft) south of the SE corner of the tin workshed, and 0.91
m (3.0 ft) NE of the east corner of a tin shed which houses a water pump.  The
bench mark is set 0.03 m (0.1 ft) below ground level, crimped to the top of a
copper-coated steel rod driven 14.63 m (48.0 ft), and encased inside a PVC pipe
surrounded by concrete.

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

                                                                                
Station ID: 8721222                         PUBLICATION DATE:  11/10/2010
Name:       PACKWOOD PLACE                                    
            FL
NOAA Chart: 11485                           Latitude:   28° 56.4' N (  28.94000)
USGS Quad:  EDGEWATER                       Longitude:  80° 52.2' W ( -80.87000)


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


                         BENCH MARK STAMPING:  IWV 53 1951 JACKSONVILLE
                         DESIGNATION:          IWV 53

MONUMENTATION:           Survey disk                           VM#:        10768
AGENCY:                  US Army Corps of Engineers (USE)      IDB PID#:  AK6907
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   28° 56.4' N (  28.94000)          LONGITUDE:  80° 52.5' W ( -80.87500)


The bench mark is a disk set flush in the top of a concrete monument, 5.49 m
(18.0 ft) NW of the west corner of a white brick triplex, 19.51 m (64.0 ft) NE
of the centerline of a drive leading NW, 18.59 m (61.0 ft) ESE of bench mark IWV
53 RM 2 Jacksonville, and 18.96 m (62.2 ft) SW of bench mark IWV 53 RM 1
Jacksonville.

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

                                                                                
Station ID: 8721222                         PUBLICATION DATE:  11/10/2010
Name:       PACKWOOD PLACE                                    
            FL
NOAA Chart: 11485                           Latitude:   28° 56.4' N (  28.94000)
USGS Quad:  EDGEWATER                       Longitude:  80° 52.2' W ( -80.87000)


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


                         BENCH MARK STAMPING:  IWV 53 RM 2 JACKSONVILLE
                         DESIGNATION:          IWV 53 RM 2

MONUMENTATION:           Survey disk                           VM#:        10770
AGENCY:                  US Army Corps of Engineers (USE)      IDB PID#:  AK6905
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID#: AK6905
LATITUDE:   28° 56.5' N (  28.94139)          LONGITUDE:  80° 52.3' W ( -80.87111)


The bench mark is a disk set flush in the top of a concrete monument, 6.10 m
(20.0 ft) NE of the centerline of a drive leading NW, 8.53 m (28.0 ft) SW of a
telephone pole, and 18.59 m (61.0 ft) WNW of bench mark IWV 53 1951
Jacksonville.

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

                                                                                
Station ID: 8721222                         PUBLICATION DATE:  11/10/2010
Name:       PACKWOOD PLACE                                    
            FL
NOAA Chart: 11485                           Latitude:   28° 56.4' N (  28.94000)
USGS Quad:  EDGEWATER                       Longitude:  80° 52.2' W ( -80.87000)


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


                         BENCH MARK STAMPING:  R 404 1991
                         DESIGNATION:          R 404

MONUMENTATION:           Flange-encased Rod                    VM#:        19508
AGENCY:                  National Geodetic Survey (NGS)        IDB PID#:  AK6982
SETTING CLASSIFICATION:  Stainless steel rod                   OPUS PID:        
LATITUDE:   28° 55.7' N (  28.92833)          LONGITUDE:  80° 52.6' W ( -80.87611)


The bench mark is a flange-encased rod located 25.39 m (83.3 ft) SE of the
extended center of Rio Grande (entrance to Hacienda Del Rio), 9.91 m (32.5 ft)
SW of the centerline of the southbound lanes of the highway, 1.01 m (3.3 ft) NW
of a utility pole, 0.30 m (1.0 ft) NE of a witness post, and 0.30 m (1.0 ft)
below the level of the highway.  The datum point is the top of a stainless steel
rod, driven to refusal at a depth of 14.8 m (48.6 ft), and encased in a 5-inch
logo cap.  



                         BENCH MARK STAMPING:  1222 F 1987
                         DESIGNATION:          872 1222 F TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:        19509
AGENCY:                  FL Department of Environmental
                         Protection (FLDEP)                    IDB PID#:  AK7015
SETTING CLASSIFICATION:  Stainless steel rod                   OPUS PID:        
LATITUDE:   28° 56.4' N (  28.93972)          LONGITUDE:  80° 52.3' W ( -80.87111)


The bench mark is a disk located 0.67 m (2.2 ft) NNW of a light pole, 11.28 m
(37.0 ft) NW of the NW corner of the Packwood Clubhouse, 4.45 m (14.6 ft) NNW,
14.60 m (47.9 ft) SE of the SE corner of a triplex, 36.36 m (119.3 ft) SSE of
reference of a power pole.  The bench mark is crimped to the top of a stainless
steel rod driven to an unknown depth, and encased in a 5-inch PVC pipe.  

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

                                                                                
Station ID: 8721222                         PUBLICATION DATE:  11/10/2010
Name:       PACKWOOD PLACE                                    
            FL
NOAA Chart: 11485                           Latitude:   28° 56.4' N (  28.94000)
USGS Quad:  EDGEWATER                       Longitude:  80° 52.2' W ( -80.87000)


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


                         BENCH MARK STAMPING:  1222 G 1987
                         DESIGNATION:          872 1222 G TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:        19510
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  AK7016
SETTING CLASSIFICATION:  Stainless steel rod                   OPUS PID:        
LATITUDE:   28° 56.4' N (  28.94000)          LONGITUDE:  80° 52.5' W ( -80.87500)


The bench mark is a disk located 7.92 m (26.0 ft) south of the centerline of
Packwood Road, 5.18 m (17.0 ft) WNW of a 12-inch diameter oak tree, and 0.48 km
(0.3 mi) WSW of Tidal Bench Mark 1222 F 1987.  The bench mark is crimped to the
top of a stainless steel rod riven to an unknown depth, and encased in a 5-inch
PVC pipe.

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

                                                                                
Station ID: 8721222                         PUBLICATION DATE:  11/10/2010
Name:       PACKWOOD PLACE                                    
            FL
NOAA Chart: 11485                           Latitude:   28° 56.4' N (  28.94000)
USGS Quad:  EDGEWATER                       Longitude:  80° 52.2' W ( -80.87000)


                            T I D A L   D A T U M S 


Tidal datums at PACKWOOD PLACE based on:

     LENGTH OF SERIES:      2 MONTHS
     TIME PERIOD:           February 1979 - March 1979
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  8721120 DAYTONA BEACH SHORES


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

     MEAN HIGHER HIGH WATER                     MHHW   =  0.381
     MEAN HIGH WATER                            MHW    =  0.331
     North American Vertical Datum              NAVD88 =  0.318
     MEAN TIDE LEVEL                            MTL    =  0.169
     MEAN SEA LEVEL                             MSL    =  0.167
     MEAN LOW WATER                             MLW    =  0.007
     MEAN LOWER LOW WATER                       MLLW   =  0.000

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     1222 A 1979                                 0.458    0.127
     IWV 53 1951 JACKSONVILLE                    1.145    0.814
     IWV 53 RM 2 JACKSONVILLE                    1.745    1.414
     R 404 1991                                  4.722    4.391
     1222 F 1987                                 1.103    0.772
     1222 G 1987                                 2.663    2.332


Foot Notes:

Geodetic heights of the bench marks meet all NOAA/NOS/NGS quality control
standards for Second Order, Class 1 leveling.  It is advised that a confirmation
set of levels be established for bench marks 1222 F 1987, 1222 G 1987, and R 404
1991 to verify height differences before using tidal bench mark elevation
information.

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

                                                                                
Station ID: 8721222                         PUBLICATION DATE:  11/10/2010
Name:       PACKWOOD PLACE                                    
            FL
NOAA Chart: 11485                           Latitude:   28° 56.4' N (  28.94000)
USGS Quad:  EDGEWATER                       Longitude:  80° 52.2' W ( -80.87000)


                             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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