U.S. DEPARTMENT OF COMMERCE
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National Ocean Service
Datums Page Page 1 of 11
Station ID: 8720576 PUBLICATION DATE: 08/23/2012
Name: ST. AUGUSTINE
FL
NOAA Chart: 11488 Latitude: 29° 53.5' N ( 29.89170)
USGS Quad: ST. AUGUSTINE Longitude: 81° 18.6' W ( -81.31000)
To reach the tidal bench marks from the intersection of U.S. Highway 1 and King
Street in St. Augustine, proceed east on King Street for 1.3 km (0.8 mi) to
Avienda Menendez, then south on Avienda Menendez for 46 m (150 ft) to City Yacht
Pier. The bench marks are located in the area around the pier and Bridge of the
Lions. The tide gage and staff were located on City Yacht Pier.
T I D A L B E N C H M A R K S
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 11
Station ID: 8720576 PUBLICATION DATE: 08/23/2012
Name: ST. AUGUSTINE
FL
NOAA Chart: 11488 Latitude: 29° 53.5' N ( 29.89170)
USGS Quad: ST. AUGUSTINE Longitude: 81° 18.6' W ( -81.31000)
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: J 15 1932
DESIGNATION: J 15
MONUMENTATION: Bench Mark disk VM#: 5203
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: AQ0274
SETTING CLASSIFICATION: Column base OPUS PID:
LATITUDE: 29° 53.6' N ( 29.89278) LONGITUDE: 81° 18.7' W ( -81.31167)
The primary bench mark is a disk set vertically in the north face of the
concrete foundation of the NE column of the auction pavilion (formally the old
slave market), located 37.00 m (121.4 ft) north of the centerline of King
Street, 17.10 m (56.1 ft) south of the centerline of Cathedral Place, 6.40 m
(21.0 ft) west of the centerline of Charlotte Street and 0.30 m (1.0 ft) west of
the NE corner of the column, and 0.49 m (1.6 ft) above the level of the ground.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 11
Station ID: 8720576 PUBLICATION DATE: 08/23/2012
Name: ST. AUGUSTINE
FL
NOAA Chart: 11488 Latitude: 29° 53.5' N ( 29.89170)
USGS Quad: ST. AUGUSTINE Longitude: 81° 18.6' W ( -81.31000)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: F 141 1954
DESIGNATION: F 141
MONUMENTATION: Tidal Station disk VM#: 19384
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: AQ0254
SETTING CLASSIFICATION: Concrete wall OPUS PID:
LATITUDE: 29° 54.6' N ( 29.91000) LONGITUDE: 81° 19.2' W ( -81.32056)
The bench mark is a disk set vertically in the west face of The State Iron And
Metal Company at 185 San Marco Avenue, at the intersection of San Marco Avenue
and Nelmar Avenue, 5.49 m (18.0 ft) east of the east curb of San Marco Avenue,
3.35 m (11.0 ft) south of the south curb of Nelmar Avenue, 0.40 m (1.3 ft) above
the sidewalk, set vertically in the west wall of a vacant white stucco building,
0.46 m (1.5 ft) south of the NW corner of the building, 8.11 m (26.6 ft) south
of the center of Nelmar Avenue, 0.70 m (2.3 ft) above the ground surface, and
0.49 m (1.6 ft) south of the NE corner of the building. The building is now
occupied by Angelas Restaurant Supplies. .
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 11
Station ID: 8720576 PUBLICATION DATE: 08/23/2012
Name: ST. AUGUSTINE
FL
NOAA Chart: 11488 Latitude: 29° 53.5' N ( 29.89170)
USGS Quad: ST. AUGUSTINE Longitude: 81° 18.6' W ( -81.31000)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: Y 223 1964
DESIGNATION: Y 223
MONUMENTATION: Bench Mark disk VM#: 19385
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: AQ0260
SETTING CLASSIFICATION: Stainless steel rod OPUS PID:
LATITUDE: 29° 53.8' N ( 29.89722) LONGITUDE: 81° 18.8' W ( -81.31306)
The bench mark is a disk located 28.99 m (95.1 ft) SE of the SE corner of the
Visitors Information Center, 19.99 m (65.6 ft) north of the center of the
Huguenot Cemetery entrance road, 15.51 m (50.9 ft) south of a wooden utility
light pole, 10.00 m (32.8 ft) west of and level with the centerline of State
Road A1A (San Marcos Avenue), 0.91 m (3.0 ft) west of the west edge of a 1.52 m
(5.0 ft) wide concrete sidewalk and 0.30 m (1.0 ft) west of the west corner of a
concrete pillar at the NE corner of the cemetery. The bench mark is set 0.09 m
(0.3 ft) above the level of the ground, crimped to the top of a stainless steel
rod driven 18.9 m (62.0 ft) to refusal, and encased in in a 4-inch tile pipe.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 11
Station ID: 8720576 PUBLICATION DATE: 08/23/2012
Name: ST. AUGUSTINE
FL
NOAA Chart: 11488 Latitude: 29° 53.5' N ( 29.89170)
USGS Quad: ST. AUGUSTINE Longitude: 81° 18.6' W ( -81.31000)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: AFO
DESIGNATION: AFO
MONUMENTATION: Tidal Station disk VM#: 19386
AGENCY: US Coast and Geogetic Survey
(USC&GS) IDB PID#: AJ4721
SETTING CLASSIFICATION: Concrete seawall OPUS PID#: AJ4721
LATITUDE: 29° 53.6' N ( 29.89306) LONGITUDE: 81° 18.6' W ( -81.31056)
The bench mark is a disk set flush in the seawall near the SE corner of the
fort, located 18.84 m (61.8 ft) NE of a chiseled square designated as MARION,
13.87 m (45.5 ft) WSW of the SE corner of the seawall, 1.37 m (4.5 ft) SSE of
the north edge of the seawall and 2.38 m (7.8 ft) NNW of the south edge of the
seawall.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 11
Station ID: 8720576 PUBLICATION DATE: 08/23/2012
Name: ST. AUGUSTINE
FL
NOAA Chart: 11488 Latitude: 29° 53.5' N ( 29.89170)
USGS Quad: ST. AUGUSTINE Longitude: 81° 18.6' W ( -81.31000)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING:
DESIGNATION: MARION
ALIAS: NO STAMPING 3
MONUMENTATION: Chiseled Square VM#: 19387
AGENCY: IDB PID#: AQ0263
SETTING CLASSIFICATION: Seawall OPUS PID:
LATITUDE: 29° 53.6' N ( 29.89278) LONGITUDE: 81° 18.7' W ( -81.31083)
The bench mark a a 1.5-inch chiseled square in the center of a chiseled 5-inch
triangle that has no stamping located near the SE corner of the fort, about
93.27 m (306.0 ft) north of the north end of State Road A1A (Avenida Menendez),
18.84 m (61.8 ft) SW of the bench mark disk designated AFO and 0.30 m (1.0 ft)
south of the juncture of the ENE directed seawall.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 7 of 11
Station ID: 8720576 PUBLICATION DATE: 08/23/2012
Name: ST. AUGUSTINE
FL
NOAA Chart: 11488 Latitude: 29° 53.5' N ( 29.89170)
USGS Quad: ST. AUGUSTINE Longitude: 81° 18.6' W ( -81.31000)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: NPS USDI RESET 1972
DESIGNATION: NPS RESET
MONUMENTATION: Bench Mark disk VM#: 19388
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: AQ1543
SETTING CLASSIFICATION: Sidewalk OPUS PID#: AQ1543
LATITUDE: 29° 53.7' N ( 29.89583) LONGITUDE: 81° 18.7' W ( -81.31139)
The bench mark is a disk cemented flush in a drill hole in the sidewalk west of
the seawall, located 53.19 m (174.5 ft) south of a chiseled square designated
MARION, 22.49 m (73.8 ft) north of the north curb of the Castillo De San Marcos
National Monument parking lot, 17.13 m (56.2 ft) north of the north one of two
manhole covers, 3.05 m (10.0 ft) SW of a set of steps leading to the water, 3.05
m (10.0 ft) west of the west edge of the seawall, 0.91 m (3.0 ft) WNW of the SW
corner of the seawall at the west side of the set of steps leading to the water
and 0.30 m (1.0 ft) east of the west edge of the sidewalk.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 8 of 11
Station ID: 8720576 PUBLICATION DATE: 08/23/2012
Name: ST. AUGUSTINE
FL
NOAA Chart: 11488 Latitude: 29° 53.5' N ( 29.89170)
USGS Quad: ST. AUGUSTINE Longitude: 81° 18.6' W ( -81.31000)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING:
DESIGNATION: 872 0576 TIDAL 6 RESET
ALIAS: NO STAMPING 4
MONUMENTATION: Chiseled Square VM#: 19389
AGENCY: IDB PID#: AQ1544
SETTING CLASSIFICATION: Marble post OPUS PID:
LATITUDE: 29° 53.5' N ( 29.89167) LONGITUDE: 81° 18.8' W ( -81.31417)
The bench mark is a 1-inch outlined chiseled square in the north side of a
6-inch marble post in the north curb of King Street, located 7.80 m (25.6 ft)
north of the centerline of King Street and 5.61 m (18.4 ft) west of the
centerline of Saint George Street, and level with King Street.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 9 of 11
Station ID: 8720576 PUBLICATION DATE: 08/23/2012
Name: ST. AUGUSTINE
FL
NOAA Chart: 11488 Latitude: 29° 53.5' N ( 29.89170)
USGS Quad: ST. AUGUSTINE Longitude: 81° 18.6' W ( -81.31000)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: W 223 1964
DESIGNATION: W 223
MONUMENTATION: Bench Mark disk VM#: 19390
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: AQ0281
SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID:
LATITUDE: 29° 53.5' N ( 29.89139) LONGITUDE: 81° 18.9' W ( -81.31556)
The bench mark is a disk located 9.69 m (31.8 ft) west of the centerline of
Cordova Street, 8.41 m (27.6 ft) south of the centerline of King Street, 2.71 m
(8.9 ft) SE of the NE corner of a coquina rock pillar and 0.61 m (2.0 ft) NW of
a signal light pole. The bench mark is set 0.12 m (0.4 ft) above the level of
the ground, crimped to the top of a copper coated steel rod driven 20.7 m (67.9
ft) into the ground, and encased in a 4-inch tile pipe.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 10 of 11
Station ID: 8720576 PUBLICATION DATE: 08/23/2012
Name: ST. AUGUSTINE
FL
NOAA Chart: 11488 Latitude: 29° 53.5' N ( 29.89170)
USGS Quad: ST. AUGUSTINE Longitude: 81° 18.6' W ( -81.31000)
T I D A L D A T U M S
Tidal datums at ST. AUGUSTINE based on:
LENGTH OF SERIES: 2 YEARS
TIME PERIOD: January 1977 - December 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:
HIGHEST OBSERVED WATER LEVEL (11/03/1978) = 2.152
MEAN HIGHER HIGH WATER MHHW = 1.519
MEAN HIGH WATER MHW = 1.416
North American Vertical Datum NAVD88 = 0.895
MEAN SEA LEVEL MSL = 0.740
MEAN TIDE LEVEL MTL = 0.733
MEAN LOW WATER MLW = 0.051
MEAN LOWER LOW WATER MLLW = 0.000
LOWEST OBSERVED WATER LEVEL (04/05/1977) = -0.807
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
J 15 1932 2.900 1.484
F 141 1954 3.699 2.283
Y 223 1964 2.933 1.517
AFO 3.697 2.281
MARION 2.711 1.295
NPS USDI RESET 1972 2.104 0.688
872 0576 TIDAL 6 RESET 2.943 1.527
W 223 1964 2.648 1.232
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 11 of 11
Station ID: 8720576 PUBLICATION DATE: 08/23/2012
Name: ST. AUGUSTINE
FL
NOAA Chart: 11488 Latitude: 29° 53.5' N ( 29.89170)
USGS Quad: ST. AUGUSTINE Longitude: 81° 18.6' W ( -81.31000)
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.