Bench Mark Sheet for 8639214, RUDEE HEIGHTS, LAKE WESLEY VA

Superseded Epoch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Small blue map location marker Unpublished bench mark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  5

                                                                                
Station ID: 8639214                         PUBLICATION DATE:  07/02/2003
Name:       RUDEE HEIGHTS, LAKE WESLEY                        
            VA
NOAA Chart: 12207                           Latitude:   36° 49.5' N (  36.82500)
USGS Quad:  VIRGINIA BEACH                  Longitude:  75° 58.5' W ( -75.97500)


To reach the tidal bench marks from Rudee Inlet Bridge, proceed south on General
Booth Boulevard to Grace Avenue, then turn left and proceed east on Grace Avenue
to Southside Avenue, then turn right and proceed south on Southside Avenue to
536 Southside Avenue.  The bench marks are along General Booth Boulevard and
Southside Avenue.  The tide gage and staff were on the bulkhead behind the house
at 536 Southside Avenue.


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


                 PRIMARY BENCH MARK STAMPING:  9214 A 1984
                         DESIGNATION:          863 9214 A

MONUMENTATION:           Tidal Station disk                    VM#:         3515
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   36° 49.5' N (  36.82500)          LONGITUDE:  75° 58.8' W ( -75.98000)


The primary bench mark is a disk set in a concrete monument located at the NW
corner of a wooden fence south of the house at 536 Southside Avenue, 6.77 m
(22.2 ft) east of the centerline of Southside Avenue, 2.41 m (7.9 ft) SSW of
0.09 m (0.3 ft) diameter pine tree, 1.07 m (3.5 ft) SW of the NW post of the
wooden fence.



                         BENCH MARK STAMPING:  F 311 RESET 1967
                         DESIGNATION:          863 9214 F 311 RESET 1967

MONUMENTATION:           Bench Mark disk                       VM#:         3512
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  FW0085
SETTING CLASSIFICATION:  Bridge wing wall                      OPUS PID:        
LATITUDE:   36° 49.8' N (  36.83000)          LONGITUDE:  75° 58.4' W ( -75.97330)


The bench mark is a disk set flush in a bridge wing wall at the SE end of Rudee
Inlet Bridge, and 1.07 m (3.5 ft) above the level of the bridge floor.

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

                                                                                
Station ID: 8639214                         PUBLICATION DATE:  07/02/2003
Name:       RUDEE HEIGHTS, LAKE WESLEY                        
            VA
NOAA Chart: 12207                           Latitude:   36° 49.5' N (  36.82500)
USGS Quad:  VIRGINIA BEACH                  Longitude:  75° 58.5' W ( -75.97500)


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


                         BENCH MARK STAMPING:  NO 6 1967
                         DESIGNATION:          863 9214 TIDAL 6

MONUMENTATION:           Tidal Station disk                    VM#:         3513
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  FW0086
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   36° 49.2' N (  36.82000)          LONGITUDE:  75° 58.9' W ( -75.98170)


The bench mark is a disk set in the NE corner of Rudee Inlet Bridge on top of a
concrete base, 2.90 m (9.5 ft) SW of a 0.15 m (0.5 ft) diameter pine tree, and
0.61 m (2.0 ft) east of the edge of the roadway.



                         BENCH MARK STAMPING:  9214 B 1984
                         DESIGNATION:          863 9214 B

MONUMENTATION:           Tidal Station disk                    VM#:         3516
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   36° 49.5' N (  36.82500)          LONGITUDE:  75° 58.8' W ( -75.98000)


The bench mark is a disk set in a concrete monument located at the SW corner of
the  intersection between Grace and Southside Avenues, 15.39 m (50.5 ft) east of
a 0.37 m (1.2 ft) diameter cherry tree, 13.72 m (45.0 ft) SW of the northernmost
manhole cover in the center of Southside Avenue, 13.66 m (44.8 ft) NNE of a 0.37
m (1.2 ft) cherry tree, 0.70 m (2.3 ft) SW of a stop sign.

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

                                                                                
Station ID: 8639214                         PUBLICATION DATE:  07/02/2003
Name:       RUDEE HEIGHTS, LAKE WESLEY                        
            VA
NOAA Chart: 12207                           Latitude:   36° 49.5' N (  36.82500)
USGS Quad:  VIRGINIA BEACH                  Longitude:  75° 58.5' W ( -75.97500)


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


                         BENCH MARK STAMPING:  9214 C 1984
                         DESIGNATION:          863 9214 C

MONUMENTATION:           Tidal Station disk                    VM#:         3517
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   36° 49.5' N (  36.82500)          LONGITUDE:  75° 58.8' W ( -75.98000)


The bench mark is a disk set in concrete monument located at the SE corner of
the intersection of General Booth Boulevard and Grace Avenue, 10.27 m (33.7 ft)
west of power pole #0K32, 2.44 m (8.0 ft) WNW of a 0.3 (1 ft) diameter pine
tree, and 0.82 m (2.7 ft) north of power pole #0K33.

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

                                                                                
Station ID: 8639214                         PUBLICATION DATE:  07/02/2003
Name:       RUDEE HEIGHTS, LAKE WESLEY                        
            VA
NOAA Chart: 12207                           Latitude:   36° 49.5' N (  36.82500)
USGS Quad:  VIRGINIA BEACH                  Longitude:  75° 58.5' W ( -75.97500)


                            T I D A L   D A T U M S 


Tidal datums at RUDEE HEIGHTS, LAKE WESLEY based on:

     LENGTH OF SERIES:      4 MONTHS
     TIME PERIOD:           March 1984 - June 1984
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  8638610 SEWELLS POINT, HAMPTON ROADS


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

     MEAN HIGHER HIGH WATER                     MHHW   =  1.161
     MEAN HIGH WATER                            MHW    =  1.058
     North American Vertical Datum              NAVD88 =  0.691
     MEAN SEA LEVEL                             MSL    =  0.557
     MEAN TIDE LEVEL                            MTL    =  0.551
     MEAN LOW WATER                             MLW    =  0.044
     MEAN LOWER LOW WATER                       MLLW   =  0.000

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     9214 A 1984                                 3.113    2.055
     F 311 RESET 1967                           11.443   10.385
     NO 6 1967                                   7.977    6.919
     9214 B 1984                                 4.026    2.968
     9214 C 1984                                 5.799    4.741


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

                                                                                
Station ID: 8639214                         PUBLICATION DATE:  07/02/2003
Name:       RUDEE HEIGHTS, LAKE WESLEY                        
            VA
NOAA Chart: 12207                           Latitude:   36° 49.5' N (  36.82500)
USGS Quad:  VIRGINIA BEACH                  Longitude:  75° 58.5' W ( -75.97500)


                             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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