U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 8
Station ID: 8720357 PUBLICATION DATE: 05/24/2021
Name: I-295 BUCKMAN BRIDGE
FL
NOAA Chart: 11492 Latitude: 30° 11.5' N ( 30.19242)
USGS Quad: ORANGE PARK Longitude: 81° 41.3' W ( -81.68889)
To reach the tidal bench marks from the I-295 overpass over US Highway 17 north
of Orange Park, proceed 0.56 km (0.35 mi) north on Highway 17 to the junction of
US Highway 17 and Collins Road, turn right onto Collins Road and go east for 0.3
km (0.2 mi) to a 90 degree turn to the right, continue for 2.4 km (1.5 mi) to a
90 degree turn to the left, and continue on Collins Road for 1.1 km (0.7 mi) to
its intersection with Malaga Avenue, then go south on Malaga Avenue for 0.08 km
(0.05 mi) to the entrance of the Jacksonville Rudder Club on the left, then go
east for 0.08 km (0.05 mi) to the boat ramp and pier. The bench marks are
located in the vicinity of the club and along Collins Avenue. The tide gage was
located at the NE corner of the wooden pier at the club.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 0357 C 1995
DESIGNATION: 872 0357 C
MONUMENTATION: Tidal Station disk VM#: 13482
AGENCY: National Ocean Service (NOS) IDB PID#: DL5348
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 30° 11.6' N ( 30.19297) LONGITUDE: 81° 41.5' W ( -81.69211)
The primary bench mark is a disk set in top of a concrete monument at the
entrance to the Jacksonville Rudder Club, 21.95 m (72.0 ft) south of the
approximate centerline of the entrance drive, 7.80 m (25.6 ft) east of the
approximate centerline of Malaga Avenue, 3.41 m (11.2 ft) north of power pole
No. 8539, 0.70 m (2.3 ft) west of a chainlink fence and witness post, and at
ground level.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 8
Station ID: 8720357 PUBLICATION DATE: 05/24/2021
Name: I-295 BUCKMAN BRIDGE
FL
NOAA Chart: 11492 Latitude: 30° 11.5' N ( 30.19242)
USGS Quad: ORANGE PARK Longitude: 81° 41.3' W ( -81.68889)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 0357 D 1995
DESIGNATION: 872 0357 D
MONUMENTATION: Tidal Station disk VM#: 13483
AGENCY: National Ocean Service (NOS) IDB PID#: DL5347
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 30° 11.6' N ( 30.19347) LONGITUDE: 81° 41.5' W ( -81.69208)
The bench mark is a disk set in top of a concrete monument at the intersection
of Collins Road and Malaga Avenue, 11.73 m (38.5 ft) south of the centerline of
Collins Road, 9.45 m (31.0 ft) south of the centerline of Malaga Avenue, 0.76 m
(2.5 ft) SW of the north corner of a chainlink fence, 0.46 m (1.5 ft) west of a
witness post, and at ground level.
BENCH MARK STAMPING: 0357 E 1995
DESIGNATION: 872 0357 E
MONUMENTATION: Tidal Station disk VM#: 13484
AGENCY: National Ocean Service (NOS) IDB PID#: DL5346
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 30° 11.6' N ( 30.19358) LONGITUDE: 81° 41.8' W ( -81.69733)
The bench mark is a disk set in top of a concrete monument at the intersection
of Collins Road and New York Avenue, 6.61 m (21.7 ft) north of the centerline of
Collins Road, 5.15 (16.9 ft) west of the centerline of New York Avenue, 3.35 m
(11.0 ft) SE of a 30-inch diameter pine tree, 0.43 m (1.4 ft) south of a street
sign, and at ground level.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 8
Station ID: 8720357 PUBLICATION DATE: 05/24/2021
Name: I-295 BUCKMAN BRIDGE
FL
NOAA Chart: 11492 Latitude: 30° 11.5' N ( 30.19242)
USGS Quad: ORANGE PARK Longitude: 81° 41.3' W ( -81.68889)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 0357 F 1995
DESIGNATION: 872 0357 F
MONUMENTATION: Tidal Station disk VM#: 13485
AGENCY: National Ocean Service (NOS) IDB PID#: DL5345
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 30° 11.6' N ( 30.19325) LONGITUDE: 81° 42.2' W ( -81.70372)
The bench mark is a disk set in top of a concrete monument at the corner of
Barcelona Avenue and Collins Road, 15.24 m (50.0 ft) SSE of the center point of
Collins Road and Barcelona Avenue, 2.90 m (9.5 ft) SW of a guardrail, 0.40 m
(1.3 ft) NE of a chainlink fence, 0.37 m (1.2 ft) NE of a witness post, and at
ground level.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 8
Station ID: 8720357 PUBLICATION DATE: 05/24/2021
Name: I-295 BUCKMAN BRIDGE
FL
NOAA Chart: 11492 Latitude: 30° 11.5' N ( 30.19242)
USGS Quad: ORANGE PARK Longitude: 81° 41.3' W ( -81.68889)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: J 422 1993
DESIGNATION: J 422
MONUMENTATION: Vertical Control disk VM#: 13486
AGENCY: National Geodetic Survey (NGS) IDB PID#: AC5769
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 30° 12.2' N ( 30.20330) LONGITUDE: 81° 42.4' W ( -81.70670)
The bench mark is set in the top of a concrete monument 0.6 m (2.0 ft) below the
level of U.S Highway 17 and flush with the ground, located 21.3 m (70.0 ft)
southwest of the centerline of a dim track road, 16.1 m (52.7 ft) southeast of
the southeast rail of the railroad tracks, 7.7 m (25.3 ft) northwest of the
northwest edge of the southbound lanes of U.S Highway 17 and 1.0 m (3.4 ft)
south of a wood power pole and a carsonite witness post.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 8
Station ID: 8720357 PUBLICATION DATE: 05/24/2021
Name: I-295 BUCKMAN BRIDGE
FL
NOAA Chart: 11492 Latitude: 30° 11.5' N ( 30.19242)
USGS Quad: ORANGE PARK Longitude: 81° 41.3' W ( -81.68889)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: K 422 1993
DESIGNATION: K 422
MONUMENTATION: Vertical Control disk VM#: 13487
AGENCY: National Geodetic Survey (NGS) IDB PID#: AC5771
SETTING CLASSIFICATION: Bridge abutment OPUS PID:
LATITUDE: 30° 11.5' N ( 30.19170) LONGITUDE: 81° 42.3' W ( -81.70500)
The bench mark is set vertically in the most northwesterly concrete pier under
I-295 and 1.6 m (5.3 ft) above the level of the ground, located 38.3 m (125.8
ft) southeast of a metal light pole with 4 lights attached, 1.9 m (6.3 ft) west
of the west concrete curb of the southbound lanes of U.S Highway 17, and 6.5 m
(21.2 ft) north of the nearest southerly concrete pier.
BENCH MARK STAMPING: 0357 G 2021
DESIGNATION: 872 0357 G
MONUMENTATION: Flange-encased Rod VM#: 23752
AGENCY: National Ocean Service (NOS) IDB PID:
SETTING CLASSIFICATION: OPUS PID#: BBHG48
LATITUDE: 30° 11.6' N ( 30.19333) LONGITUDE: 81° 42.3' W ( -81.70539)
The bench mark is a stainless steel rod located in the island between feeder
lanes from I-295 Beltway Westbound, 17.4 m (57 ft) west of the US-17 north sign,
24.85 m (81.53 ft) east of the wrong way sign, 9.6 m (31.5 ft) south of the edge
of I-295-to-17 North feeder lane, 0.2 m (0.66 ft) east of a carsonite, NOS
witness post. The datum point is the top of a stainless steel rod drive 38.0m
(124.7 ft) to refusal.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 8
Station ID: 8720357 PUBLICATION DATE: 05/24/2021
Name: I-295 BUCKMAN BRIDGE
FL
NOAA Chart: 11492 Latitude: 30° 11.5' N ( 30.19242)
USGS Quad: ORANGE PARK Longitude: 81° 41.3' W ( -81.68889)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 0357 B RESET 2010
DESIGNATION: 872 0357 B RESET
MONUMENTATION: Metal Rod VM#: 23756
AGENCY: National Ocean Service (NOS) IDB PID#: DO9899
SETTING CLASSIFICATION: Stainless steel rod OPUS PID#: DO9899
LATITUDE: 30° 11.6' N ( 30.19272) LONGITUDE: 81° 41.4' W ( -81.69067)
The bench mark is a metal rod set near the Jacksonville Rudder Club pool, 34.75
m (114.0 ft) SSW of the approximate center of the boat ramp, 12.04 m (39.5 ft)
SE of the SE corner of the pool deck, 1.0 m (3.2 ft) SW of the east side of the
concrete seawall and 0.9 m (3.1ft) NEof the south side of the concrete seawall.
The datum point is set 9.1 cm (0.3 ft) below the level of the logo cap, being
the top of a stainless steel rod driven 7.1 m (23 ft) to refusal, encased in a
5-inch logo cap which is set at ground level.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 7 of 8
Station ID: 8720357 PUBLICATION DATE: 05/24/2021
Name: I-295 BUCKMAN BRIDGE
FL
NOAA Chart: 11492 Latitude: 30° 11.5' N ( 30.19242)
USGS Quad: ORANGE PARK Longitude: 81° 41.3' W ( -81.68889)
T I D A L D A T U M S
Tidal datums at I-295 BUCKMAN BRIDGE based on:
LENGTH OF SERIES: 10 YEARS
TIME PERIOD: 2/4-1/6,7/6-6/7,7/8-6/10,11/10-10/13,1-12/14&16
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 8720218 BAR PILOTS DOCK, ST JOHNS RIVER
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
HIGHEST OBSERVED WATER LEVEL (09/11/2017) = 1.894
MEAN HIGHER HIGH WATER MHHW = 0.308
MEAN HIGH WATER MHW = 0.293
North American Vertical Datum NAVD88 = 0.189
MEAN TIDE LEVEL MTL = 0.159
MEAN SEA LEVEL MSL = 0.155
MEAN LOW WATER MLW = 0.025
MEAN LOWER LOW WATER MLLW = 0.000
LOWEST OBSERVED WATER LEVEL (01/09/2009) = -0.502
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
0357 C 1995 4.817 4.524
0357 D 1995 4.666 4.373
0357 E 1995 5.582 5.289
0357 F 1995 7.645 7.352
J 422 1993 5.598 5.305
K 422 1993 10.291 9.998
0357 G 2021 7.499 7.206
0357 B RESET 2010 0.816 0.523
Foot Notes:
Bench mark 0357 G 2021 is based on one differential leveling connection and does
not meet the quality control standards of the NOS. Therefore, caution should be
used when deriving elevations for this mark.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 8 of 8
Station ID: 8720357 PUBLICATION DATE: 05/24/2021
Name: I-295 BUCKMAN BRIDGE
FL
NOAA Chart: 11492 Latitude: 30° 11.5' N ( 30.19242)
USGS Quad: ORANGE PARK Longitude: 81° 41.3' W ( -81.68889)
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.