U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 7
Station ID: 8720225 PUBLICATION DATE: 11/10/2010
Name: PHOENIX PARK
FL
NOAA Chart: 11488 Latitude: 30° 23.0' N ( 30.38330)
USGS Quad: TROUT RIVER Longitude: 81° 38.2' W ( -81.63670)
To reach the tidal bench marks from the intersection of U.S. Highway 17 (Main
Street) and Lawnton Avenue in Jacksonville, proceed SE on Lawnton Avenue for 0.8
km (0.5 mi) to Buffalo Avenue, then turn right and proceed south on Buffalo
Avenue for 0.2 km (0.1 mi) to Virginia Street, then turn left and proceed east
on Virginia Street for 0.3 km (0.2 mi) to Evergreen Avenue, then turn right and
proceed south on Evergreen Avenue for 0.2 km (0.1 mi) to a drive leading east
into the U.S. Coast Guard Training Facility. The bench marks are on the Coast
Guard property and along U.S. Highway 17. The tide gage and staff were located
on the dock and piling of the Coast Guard property.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 0225 C
DESIGNATION: 872 0225 C TIDAL
MONUMENTATION: Tidal Station disk VM#: 5123
AGENCY: National Ocean Survey (NOS) IDB PID#: BC1562
SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID:
LATITUDE: 30° 22.9' N ( 30.38222) LONGITUDE: 81° 38.3' W ( -81.63778)
The primary bench mark is a disk located at 6935 Evergreen Avenue, 16.6 m (54.5
ft) south of a 1.0 m (3.0 ft) diameter oak tree, 9.9 m (32.5 ft) east of the
centerline of Evergreen Avenue, 7.2 m (23.5 ft) north of the centerline of a
driveway, and 0.5 m (1.5 ft) west of a witness post. The bench mark is set at
ground level, crimped to the top of a copper-clad steel rod, driven to refusal
at a depth of 12.8 m (42.0 ft), encased in a PVC pipe projecting 0.3 m (1.0 ft)
above ground level and a concrete kickblock.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 7
Station ID: 8720225 PUBLICATION DATE: 11/10/2010
Name: PHOENIX PARK
FL
NOAA Chart: 11488 Latitude: 30° 23.0' N ( 30.38330)
USGS Quad: TROUT RIVER Longitude: 81° 38.2' W ( -81.63670)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: R 142 1954
DESIGNATION: R 142
MONUMENTATION: Bench Mark disk VM#: 5124
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: BC0268
SETTING CLASSIFICATION: Bridge abutment OPUS PID:
LATITUDE: 30° 23.7' N ( 30.39528) LONGITUDE: 81° 38.9' W ( -81.64889)
The bench mark is a disk set in top of and 0.1 m (0.3 ft) west of the east end
of the north concrete abutment of the CSX transportation railroad bridge
spanning trout river, 10.6 km (6.6 mi) north along seaboard air line railway
from the station at Jacksonville, 8.2 km (5.1 mi) south along the railway from
the school at Oceanway, 4.4 km (2.7 mi) northerly along U.S. Highway 17 (North
Main Street) from the junction of U.S. Highway 1 Alternate in Jacksonville, 0.2
km (0.1 mi) north of milepost #629, , 47.0 m (154.2 ft) west of the centerline
of the southbound lanes of the highway 30.0 m (100.0 ft) SW of a carsonite
witness post, 1.3 m (4.3 ft) east of the near rail, 1.3 m (4.3 ft) below the
level of the track.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 7
Station ID: 8720225 PUBLICATION DATE: 11/10/2010
Name: PHOENIX PARK
FL
NOAA Chart: 11488 Latitude: 30° 23.0' N ( 30.38330)
USGS Quad: TROUT RIVER Longitude: 81° 38.2' W ( -81.63670)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: V2 V2 17.457
DESIGNATION: V 2
MONUMENTATION: Bench Mark disk VM#: 5125
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: BC0269
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 30° 23.2' N ( 30.38669) LONGITUDE: 81° 38.8' W ( -81.64669)
The bench mark is a disk set in the top of a concrete monument in a fenced yard
at 7508 Oakwood Street, located at the intersection of 65th Street and the
Seaboard Air Line Railway, 19.8 m (65.0 ft) WNW of the center of the
intersection of 65th and Oakwood Streets, 18.3 m (60.0 ft) west of the
centerline of Oakwood Street, 13.4 m (44.0 ft) east of the east rail of the
track, 10.2 m (33.5 ft) north of the centerline of 65th Street, 0.5 m (1.5 ft)
south of a witness post, 0.2 m (0.5 ft) above ground level, and 1.2 m (4.0 ft)
above track level.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 7
Station ID: 8720225 PUBLICATION DATE: 11/10/2010
Name: PHOENIX PARK
FL
NOAA Chart: 11488 Latitude: 30° 23.0' N ( 30.38330)
USGS Quad: TROUT RIVER Longitude: 81° 38.2' W ( -81.63670)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 0225 D 2004
DESIGNATION: 872 0225 D TIDAL
MONUMENTATION: Bench Mark disk VM#: 19294
AGENCY: FL Department of Environmental
Protection (FLDEP) IDB PID#: DH9545
SETTING CLASSIFICATION: Concrete monument OPUS PID#: DH9545
LATITUDE: 30° 23.0' N ( 30.38389) LONGITUDE: 81° 38.3' W ( -81.63861)
The bench mark is a disk set in the top of a round concrete monument flush with
the ground about 0.2 m (0.5 ft) above the level of Denver Street, 9.4 m (31.0
ft) SW of the centerline of Virginia Street, 5.9 m (19.5 ft) west of the
centerline of Denver Street, 4.4 m (14.5 ft) north of wooden power pole No. 7120
80 095753, 3.4 m (11.0 ft) south of concrete power pole No. 932, 2.3 m (7.6 ft)
west of the center of an iron catch basin grate, 0.6 m (2.0 ft) east of a 1.8 m
(6.0 ft) high wooden fence and 0.5 m (1.7 ft) east of a carsonite witness post.
NOTE: A magnet was buried on the south side of the mark.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 7
Station ID: 8720225 PUBLICATION DATE: 11/10/2010
Name: PHOENIX PARK
FL
NOAA Chart: 11488 Latitude: 30° 23.0' N ( 30.38330)
USGS Quad: TROUT RIVER Longitude: 81° 38.2' W ( -81.63670)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 0225 F 2004
DESIGNATION: 872 0225 F TIDAL
MONUMENTATION: Bench Mark disk VM#: 19295
AGENCY: National Geodetic Survey (NGS) IDB PID#: DH9544
SETTING CLASSIFICATION: Stainless steel rod OPUS PID:
LATITUDE: 30° 23.1' N ( 30.38417) LONGITUDE: 81° 38.4' W ( -81.63917)
The bench mark is a stainless steel rod located 9.8 m (32.0 ft) Southwest of the
centerline of Virginia Street, 5.6 m (18.5 ft) east of the centerline of Edge
Street, 2.7 m (9.0 ft) SE of the center of an iron catch basin grate, 0.4 m (1.3
ft) west of a 1.1 m (3.5 ft) high chain link fence and 0.3 m (1.0 ft) west of a
carsonite witness post. The datum point is recessed 0.1 m (0.3 ft) below the
level of the NGS logo cap, being the top of a stainless steel rod, driven to
refusal at a depth of 14.0 m (46.0 ft) encased in a NGS logo cap flush with the
ground and about 0.2 m (0.5 ft) above the level of Edge Street. NOTE: A magnet
was placed inside of the NGS logo cap.
BENCH MARK STAMPING: 0225 G 2004
DESIGNATION: 872 0225 G TIDAL
MONUMENTATION: Bench Mark disk VM#: 19296
AGENCY: FL Department of Environmental
Protection (FLDEP) IDB PID#: DH9546
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 30° 23.1' N ( 30.38444) LONGITUDE: 81° 38.4' W ( -81.64028)
The bench mark is a disk set in the top of a round concrete monument flush with
the ground about 0.2 m (0.5 ft) above the level of Nelms Street, 9.8 m (32.0 ft)
SW of the centerline of Virginia Street, 5.6 m (18.5 ft) west of the centerline
of Nelms Street, 2.6 m (8.5 ft) SW of the center of an iron catch basin grate,
0.6 m (2.0 ft) east of a 1.2 m (4.0 ft) high chain link fence and 0.5 m (1.7 ft)
east of a carsonite witness post. NOTE: A magnet was buried on the south side
of the mark.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 7
Station ID: 8720225 PUBLICATION DATE: 11/10/2010
Name: PHOENIX PARK
FL
NOAA Chart: 11488 Latitude: 30° 23.0' N ( 30.38330)
USGS Quad: TROUT RIVER Longitude: 81° 38.2' W ( -81.63670)
T I D A L D A T U M S
Tidal datums at PHOENIX PARK based on:
LENGTH OF SERIES: 5 MONTHS
TIME PERIOD: September 1977 - January 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 = 0.828
MEAN HIGH WATER MHW = 0.788
North American Vertical Datum NAVD88 = 0.496
MEAN TIDE LEVEL MTL = 0.406
MEAN SEA LEVEL MSL = 0.403
MEAN LOW WATER MLW = 0.024
MEAN LOWER LOW WATER MLLW = 0.000
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
0225 C 3.634 2.846
R 142 1954 2.363 1.575
V2 V2 17.457 5.407 4.619
0225 D 2004 2.868 2.080
0225 F 2004 2.481 1.693
0225 G 2004 2.837 2.049
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 0225 D 2004, 0225 F 2004, and 0225
G 2004 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: 8720225 PUBLICATION DATE: 11/10/2010
Name: PHOENIX PARK
FL
NOAA Chart: 11488 Latitude: 30° 23.0' N ( 30.38330)
USGS Quad: TROUT RIVER Longitude: 81° 38.2' W ( -81.63670)
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.