U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 5
Station ID: 8639908 PUBLICATION DATE: 09/30/2010
Name: MUNDEN POINT, NORTH LANDING RIVER
VA
NOAA Chart: 12207 Latitude: 36° 34.6' N ( 36.57670)
USGS Quad: CREEDS Longitude: 76° 2.3' W ( -76.03830)
To reach the tidal bench marks from the intersection of Indian River Road and
Princess Anne Road in Pungo, Virginia, proceed south on Princess Anne Road for
17.4 km (10.8 mi) to Munden Point Road and a sign for Munden Point Municipal
Park, turn right at sign and continue 1.3 km (0.8 mi) to Pefley Lane, turn right
into entrance to park and continue 0.6 km (0.4 mi) to the small boat ramp on the
left. The bench marks are located in the vicinity of the boat ramp and
waterfront. The tide station was located near the SW end of the boat ramp basin.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 9908 A 1995
DESIGNATION: 863 9908 A TIDAL
MONUMENTATION: Tidal Station disk VM#: 13135
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Stainless steel rod OPUS PID#: BBCG33
LATITUDE: 36° 34.9' N ( 36.58170) LONGITUDE: 76° 2.3' W ( -76.03830)
The primary bench mark is a disk crimped to a stainless steel rod at the Munden
Point Municipal Park in Virginia Beach, on the NW side of a small boat ramp,
35.36 m (116.0 ft) SE of the NW side of the bank of land forming a small finger
of land, 18.68 m (61.3 ft) NE of the south corner of a wooden bulkhead, 8.66 m
(28.4 ft) NE of the NE corner of the tide gage shelter, and 2.47 m (8.1 ft) NW
of the SE edge of the wooden bulkhead. The bench mark is 9 cm (0.3 ft) below
grade, crimped to the top of a stainless steel rod driven 16.9 m (55.5 ft) to
refusal, and encased in a PVC pipe with aluminum access cover and surrounded by
a concrete kickblock.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 5
Station ID: 8639908 PUBLICATION DATE: 09/30/2010
Name: MUNDEN POINT, NORTH LANDING RIVER
VA
NOAA Chart: 12207 Latitude: 36° 34.6' N ( 36.57670)
USGS Quad: CREEDS Longitude: 76° 2.3' W ( -76.03830)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 9908 B 1995
DESIGNATION: 863 9908 B TIDAL
MONUMENTATION: Tidal Station disk VM#: 13136
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Stainless steel rod OPUS PID:
LATITUDE: 36° 34.9' N ( 36.58170) LONGITUDE: 76° 2.3' W ( -76.03830)
The bench mark is a disk crimped to a stainless steel rod at Munden Point
Municipal Park, 70.56 m (231.5 ft) NNE of Bench Mark 9908 A 1995, 64.59 m (211.9
ft) west of Bench Mark POINT 1989, 32.37 m (106.2 ft) north of the south edge of
a wooden bulkhead, 16.40 m (53.8 ft) NW of a picnic shelter, and 5.73 m (18.8
ft) SSE of the north edge of the bank. The bench mark is 9 cm (0.3 ft) below
grade, crimped to the top of a stainless steel rod driven 14.6 m (48.0 ft) to
refusal, and encased in a PVC pipe with an aluminum access cover, and surrounded
by a concrete kickblock.
BENCH MARK STAMPING: 9908 C 1995
DESIGNATION: 863 9908 C TIDAL
MONUMENTATION: Tidal Station disk VM#: 13137
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Stainless steel rod OPUS PID:
LATITUDE: 36° 34.9' N ( 36.58170) LONGITUDE: 76° 2.3' W ( -76.03830)
The bench mark is a disk crimped to a stainless steel rod at Munden Point
Municipal Park, in a grassy area by the bank of the river SE of the boat ramp,
61.26 m (201.0 ft) SE of Bench Mark MUNDEN 1989, 21.00 m (68.9 ft) north of a NO
SWIMMING sign, 9.05 m (29.7 ft) SW of the SW of two pine trees, and 8.7 m (28.6
ft) east of the bank's edge at the water. The bench mark is 0.1 m (0.3 ft) below
grade, crimped to the top of a stainless steel rod driven 18.3 m (60.0 ft) to
refusal, and encased in a PVC pipe with aluminum access cover, and surrounded by
a concrete kickblock.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 5
Station ID: 8639908 PUBLICATION DATE: 09/30/2010
Name: MUNDEN POINT, NORTH LANDING RIVER
VA
NOAA Chart: 12207 Latitude: 36° 34.6' N ( 36.57670)
USGS Quad: CREEDS Longitude: 76° 2.3' W ( -76.03830)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: POINT 1989
MONUMENTATION: Bench Mark disk VM#: 13138
AGENCY: US Army Corps of Engineers (USE) IDB PID#:
SETTING CLASSIFICATION: Metal pipe OPUS PID:
LATITUDE: 36° 35.0' N ( 36.58330) LONGITUDE: 76° 2.3' W ( -76.03830)
The bench mark is a disk set in a pipe surrounded by concrete at Munden Point
Municipal Park, just to the north of the wooden pier on the north side of the
boat ramp, 64.59 m (211.9 ft) east of Bench Mark 9908 B 1995, 4.39 m (14.4 ft)
east of a wooden bulkhead at the boat ramp entrance, 2.90 m (9.5 ft) NW of the
bulkhead and in line with the corner and the end of the bulkhead, and 6 cm (0.2
ft) below grade.
BENCH MARK STAMPING: MUNDEN 1989
MONUMENTATION: Bench Mark disk VM#: 13139
AGENCY: US Army Corps of Engineers (USE) IDB PID#:
SETTING CLASSIFICATION: Metal pipe OPUS PID:
LATITUDE: 41° 43.9' N ( 41.73170) LONGITUDE: 76° 2.3' W ( -76.03830)
The bench mark is a disk set in a pipe surrounded by concrete at Munden Point
Municipal Park, on the SE side of the boat ramp near the wooden piers, 18.78 m
(61.6 ft) south of Bench Mark POINT 1989, 4.42 m (14.5 ft) east of a wooden
bulkhead, 2.87 m (9.4 ft) south of the bulkhead and ramp and in line with the
corner and the end of the bulkhead, and 9 cm (0.3 ft) below grade.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 5
Station ID: 8639908 PUBLICATION DATE: 09/30/2010
Name: MUNDEN POINT, NORTH LANDING RIVER
VA
NOAA Chart: 12207 Latitude: 36° 34.6' N ( 36.57670)
USGS Quad: CREEDS Longitude: 76° 2.3' W ( -76.03830)
T I D A L D A T U M S
Tidal datums at MUNDEN POINT, NORTH LANDING RIVER based on:
LENGTH OF SERIES: 1 YEAR
TIME PERIOD: September 1995 - August 1996
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 8638610 SEWELLS POINT, HAMPTON ROADS
Elevations of tidal datums referred to Mean Sea Level (MSL), in METERS:
MEAN SEA LEVEL MSL = 0.000
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MSL
9908 A 1995 0.611
9908 B 1995 0.608
9908 C 1995 0.764
POINT 1989 0.897
MUNDEN 1989 0.721
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 5
Station ID: 8639908 PUBLICATION DATE: 09/30/2010
Name: MUNDEN POINT, NORTH LANDING RIVER
VA
NOAA Chart: 12207 Latitude: 36° 34.6' N ( 36.57670)
USGS Quad: CREEDS Longitude: 76° 2.3' W ( -76.03830)
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.