U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 9
Station ID: 8720398 PUBLICATION DATE: 11/16/2010
Name: PALM VALLEY, ICWW
FL
NOAA Chart: 11488 Latitude: 30° 8.0' N ( 30.13330)
USGS Quad: PALM VALLEY Longitude: 81° 23.2' W ( -81.38670)
To reach the tidal bench marks from the intersection of U.S. Highway 1 and the
southern city limits line of Bayard, proceed 8.0 km (5.0 mi) south along NE
along County Road C 210 to the east end of the highway bridge over the
Intracoastal Waterway. The tide gage was located north of the NE corner of the
Palm Valley Fish Company and store, and 4.57 m (15.0 ft) south of a concrete
boat ramp. The bench marks are located in the vicinity of the highway bridge
over the Intracoastal Waterway.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 0398 F 2002
DESIGNATION: 872 0398 F
MONUMENTATION: Flange-encased Rod VM#: 19397
AGENCY: National Geodetic Survey (NGS) IDB PID#: DL3569
SETTING CLASSIFICATION: Stainless steel rod OPUS PID:
LATITUDE: 30° 8.0' N ( 30.13250) LONGITUDE: 81° 23.1' W ( -81.38472)
The primary bench mark is a flange-ecansed rod located 60.96 m (200.0 ft) west
of the approximate centerline of County Road 210A, 54.86 m (180.0 ft) SE of
survey mark PALM 2 01, 25.60 m (84.0 ft) east of the centerline of a drive at
385, 16.55 m (54.3 ft) SSW of a light pole number A-3-P207, 13.11 m (43.0 ft)
south of the south side of a sidewalk, 7.32 m (24.0 ft) SSE of the approximate
centerline of Palm Valley Road, 0.76 m (2.5 ft) north of a power pole with 2 guy
wires attached and 0.34 m (1.1 ft) north of a carsonite witness post. The datum
point is recessed 0.06 m (0.2 ft) below the level of the NGS logo cap, being the
top of a stainless steel rod driven 13.53 m (44.4 ft) to refusal, and encased in
a 5-inch NGS logo cap recessed 0.06 m (0.2 ft) below the level of the ground and
about 0.30 m (1.0 ft) below the level of the paved road. A magnet was imbedded
in the ground on the north side of the monument.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 9
Station ID: 8720398 PUBLICATION DATE: 11/16/2010
Name: PALM VALLEY, ICWW
FL
NOAA Chart: 11488 Latitude: 30° 8.0' N ( 30.13330)
USGS Quad: PALM VALLEY Longitude: 81° 23.2' W ( -81.38670)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: D 500 2000
DESIGNATION: D 500
MONUMENTATION: Tidal Station disk VM#: 19395
AGENCY: FL Department of Environmental
Protection (FLDEP) IDB PID#: DE5766
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 30° 8.6' N ( 30.14361) LONGITUDE: 81° 22.6' W ( -81.37694)
The bench mark is a disk set in the top of a concrete monument flush with the
ground, located 14.75 m (48.4 ft) ESE of County Road 210, 5.70 m (18.7 ft) north
of the center of a gate, 4.57 m (15.0 ft) NE of the approximate centerline of a
dirt road, 0.46 m (1.5 ft) NW of a fence and 18.29 cm (0.6 ft) NW of a carsonite
witness post, and 18.29 cm (0.6 ft) below the level of County Road 210.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 9
Station ID: 8720398 PUBLICATION DATE: 11/16/2010
Name: PALM VALLEY, ICWW
FL
NOAA Chart: 11488 Latitude: 30° 8.0' N ( 30.13330)
USGS Quad: PALM VALLEY Longitude: 81° 23.2' W ( -81.38670)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: P V B-1 1991 JAX FLA.
DESIGNATION: P V B 1
MONUMENTATION: Tidal Station disk VM#: 19396
AGENCY: US Army Corps of Engineers (USE) IDB PID#: DL3566
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 30° 8.0' N ( 30.13389) LONGITUDE: 81° 22.9' W ( -81.38139)
The bench mark is a disk set in the top of a concrete monument, located 27.07 m
(88.8 ft) SE of the approximate centerline of County Road 210A, 21.21 m (69.6
ft) SW of the SE end of a headwall and 0.85 m (2.8 ft) NW of a carsonite witness
post, and recessed 0.12 m (0.4 ft) below the level of the ground and about 0.91
m (3.0 ft) below the level of County Road 210A.
BENCH MARK STAMPING: 0398 G 2002
DESIGNATION: 872 0398 G
MONUMENTATION: Flange-encased Rod VM#: 19398
AGENCY: National Geodetic Survey (NGS) IDB PID#: DL3568
SETTING CLASSIFICATION: Stainless steel rod OPUS PID:
LATITUDE: 30° 8.0' N ( 30.13306) LONGITUDE: 81° 23.0' W ( -81.38389)
The bench mark is a flange-encased rod located 9.75 m (32.0 ft) south of the
centerline of County Road 210A, 9.30 m (30.5 ft) west of the centerline of South
Roscoe Ext Boulevard, 8.23 m (27.0 ft) east of the extended centerline of South
Roscoe Boulevard, 2.83 m (9.3 ft) south of a power pole with 3 guy wires
attached, 0.52 m (1.7 ft) north of the NE corner of a chainlink fence and 0.30 m
(1.0 ft) north of a carsonite witness post. The datum point is recessed 0.8 ft
below the level of the NGS logo cap, being the top of a stainless steel rod
driven 10.97m (36.0 ft) to refusal, and encased in a 5-inch NGS logo cap flush
with the ground and about level with County Road 210A. A magnet was imbedded in
the ground on the north side of the monument.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 9
Station ID: 8720398 PUBLICATION DATE: 11/16/2010
Name: PALM VALLEY, ICWW
FL
NOAA Chart: 11488 Latitude: 30° 8.0' N ( 30.13330)
USGS Quad: PALM VALLEY Longitude: 81° 23.2' W ( -81.38670)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 0398 H 2002
DESIGNATION: 872 0398 H
MONUMENTATION: Bench Mark disk VM#: 19399
AGENCY: FL Department of Environmental
Protection (FLDEP) IDB PID#: DL3567
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 30° 8.0' N ( 30.13333) LONGITUDE: 81° 22.9' W ( -81.38250)
The bench mark is a disk set in the top of a concrete monument flush with the
ground, 25.30 m (83.0 ft) south of and across County Road 210A from a light pole
number A3P204, 9.60 m (31.5 ft) SSE of the south edge of County Road 210A, 3.11
m (10.2 ft) south of a power pole with 1 guy wire attached, 2.19 m (7.2 ft) NNW
of a barbwire fence and 2.01 m (6.6 ft) NNW of a carsonite witness post, and
0.61 m (2.0 ft) below the level of County Road 210A.
BENCH MARK STAMPING: 0398 J 2003
DESIGNATION: 872 0398 J
MONUMENTATION: Flange-encased Rod VM#: 19400
AGENCY: National Geodetic Survey (NGS) IDB PID#: DL5790
SETTING CLASSIFICATION: Stainless steel rod OPUS PID#: DL5790
LATITUDE: 30° 7.9' N ( 30.13111) LONGITUDE: 81° 23.2' W ( -81.38583)
The bench mark is a flange-encased rod located 63.40 m (208.0 ft) south of the
east end of the sidewalk, 61.11 m (200.5 ft) south of the approximate centerline
of Lori Lane, 41.21 m (135.2 ft) north of the SE corner of the chainlink fence,
39.99 m (131.2 ft) SE of survey mark 0398 K 2003, 7.32 m (24.0 ft) west of the
west bank of the Intracoastal Waterway, 0.27 m (0.9 ft) east of the chainlink
fence and 0.24 m (0.8 ft) east of a carsonite witness post. The datum point is
recessed 0.09 m (0.3 ft) below the level of the NGS logo cap, being the top of a
stainless steel rod driven 24.38 m (80.0 ft) to refusal, and encased in a 5-inch
NGS logo cap flush with the ground and about level with Lori Lane.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 9
Station ID: 8720398 PUBLICATION DATE: 11/16/2010
Name: PALM VALLEY, ICWW
FL
NOAA Chart: 11488 Latitude: 30° 8.0' N ( 30.13330)
USGS Quad: PALM VALLEY Longitude: 81° 23.2' W ( -81.38670)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 0398 K 2003
DESIGNATION: 872 0398 K
MONUMENTATION: Flange-encased Rod VM#: 19401
AGENCY: National Geodetic Survey (NGS) IDB PID#: DL5789
SETTING CLASSIFICATION: Stainless steel rod OPUS PID#: DL5789
LATITUDE: 30° 7.9' N ( 30.13167) LONGITUDE: 81° 23.2' W ( -81.38639)
The bench mark is a flange-encased rod located 75.74 m (248.5 ft) SSE of survey
mark 0398 L 2003, 73.15 m (240.0 ft) west of the west bank on the Intracoastal
Waterway, 41.15 m (135.0 ft) south of an aluminum light pole number A-4P111,
41.00 m (134.5 ft) SE of the south column of the 2nd set of columns from the
west bank of the Intracoastal Waterway, 27.43 m (90.0 ft) south of the
centerline of Lori Lane, 4.82 m (15.8 ft) west of the center of a double gate,
4.57 m (15.0 ft) east of the NW corner of the chainlink fence, 0.52 m (1.7 ft)
north of a chainlink fence and 0.49 m (1.6 ft) north of a carsonite witness
post. The datum point is recessed 0.09 m (0.3 ft) below the level of the NGS
logo cap, being the top of a stainless steel rod driven 19.42 m (63.7 ft) to
refusal, and encased in a 5-inch NGS logo cap recessed 0.03 m (0.1 ft) below the
level of the ground and about level with Lori Lane.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 9
Station ID: 8720398 PUBLICATION DATE: 11/16/2010
Name: PALM VALLEY, ICWW
FL
NOAA Chart: 11488 Latitude: 30° 8.0' N ( 30.13330)
USGS Quad: PALM VALLEY Longitude: 81° 23.2' W ( -81.38670)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 0398 L 2003
DESIGNATION: 872 0398 L
MONUMENTATION: Flange-encased Rod VM#: 19402
AGENCY: Natioanal Geodetic Survey (NGS) IDB PID#: DL5788
SETTING CLASSIFICATION: Stainless steel rod OPUS PID:
LATITUDE: 30° 7.9' N ( 30.13194) LONGITUDE: 81° 23.2' W ( -81.38639)
The bench mark is a flange-encased rod located 75.74 m (248.5 ft) NNW of survey
mark 0398 K 2003, 68.58 m (225.0 ft) west of the west bank on the Intracoastal
Waterway, 48.07 m (157.7 ft) NW of the centerline of Lori Lane, 41.76 m (137.0
ft) NW of light pole number A-4P111, 17.86 m (58.6 ft) north of the north column
of the 2nd set of columns from the west bank of the Intracoastal Waterway and
0.30 m (1.0 ft) south of a carsonite witness post. The datum point is recessed
0.18 m (0.6 ft) below the level of the NGS logo cap, being the top of a
stainless steel rod driven 25.54 m (83.8 ft) to refusal, and encased in a 5-inch
NGS logo cap recessed 0.03 m (0.1 ft) below the level of the ground and about
0.30 m (1.0 ft) below the level of Lori Lane.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 7 of 9
Station ID: 8720398 PUBLICATION DATE: 11/16/2010
Name: PALM VALLEY, ICWW
FL
NOAA Chart: 11488 Latitude: 30° 8.0' N ( 30.13330)
USGS Quad: PALM VALLEY Longitude: 81° 23.2' W ( -81.38670)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: PALM 2 01 JAX FLA
DESIGNATION: PALM 2
MONUMENTATION: Bench Mark disk VM#: 19403
AGENCY: US Army Corps of Engineers (USE) IDB PID#: DL3570
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 30° 8.0' N ( 30.13306) LONGITUDE: 81° 23.1' W ( -81.38472)
The bench mark is a disk set in the top of a concrete monument, located 72.42 m
(237.6 ft) SW of the centerline of County Road 210A, 28.35 m (93.0 ft) SE of the
SE corner of the Palm Valley Bait And Tackle Shop, 11.89 m (39.0 ft) NW of the
NW corner of a bridge column (the 6th column from the east) and 0.46 m (1.5 ft)
north of a carsonite witness post.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 8 of 9
Station ID: 8720398 PUBLICATION DATE: 11/16/2010
Name: PALM VALLEY, ICWW
FL
NOAA Chart: 11488 Latitude: 30° 8.0' N ( 30.13330)
USGS Quad: PALM VALLEY Longitude: 81° 23.2' W ( -81.38670)
T I D A L D A T U M S
Tidal datums at PALM VALLEY, ICWW based on:
LENGTH OF SERIES: 1 MONTH
TIME PERIOD: September 1978 - September 1978
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 8720220 MAYPORT (FERRY DEPOT), SAINT JOHNS RIVER
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
MEAN HIGHER HIGH WATER MHHW = 1.552
MEAN HIGH WATER MHW = 1.476
North American Vertical Datum NAVD88 = 0.960
MEAN SEA LEVEL MSL = 0.910
MEAN TIDE LEVEL MTL = 0.766
MEAN LOW WATER MLW = 0.056
MEAN LOWER LOW WATER MLLW = 0.000
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
0398 F 2002 1.988 0.512
D 500 2000 2.929 1.453
P V B-1 1991 JAX FLA. 1.798 0.322
0398 G 2002 2.005 0.529
0398 H 2002 1.960 0.484
0398 J 2003 2.036 0.560
0398 K 2003 2.157 0.681
0398 L 2003 1.841 0.365
PALM 2 01 JAX FLA 2.096 0.619
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 0398 J 2003, 0398 K 2003, and 0398
L 2003 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 9 of 9
Station ID: 8720398 PUBLICATION DATE: 11/16/2010
Name: PALM VALLEY, ICWW
FL
NOAA Chart: 11488 Latitude: 30° 8.0' N ( 30.13330)
USGS Quad: PALM VALLEY Longitude: 81° 23.2' W ( -81.38670)
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.