U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 6
Station ID: 8720793 PUBLICATION DATE: 04/17/2025
Name: PINEY BLUFF LANDING, DUNNS CREEK
FL
NOAA Chart: 11495 Latitude: 29° 33.5' N ( 29.55830)
USGS Quad: SAN MATEO Longitude: 81° 34.4' W ( -81.57330)
TO REACH THE TBM 872 0793 AQUA TRAK FROM THE JUNCTION OF COUNTY ROAD 309 AND U.S
HIGHWAY 17 IN SATSUMA, GO SOUTHEAST ON U.S. HIGHWAY 17 FOR 3.1 MI (5.0 KM) TO
THE JUNCTION OF SISCO ROAD ON THE LEFT, TURN LEFT ON SISCO ROAD AND GO EAST FOR
2.2 MI (3.5 KM) TO THE MAIN ENTRANCE OF DUNNS CREEK STATE PARK ON THE LEFT, TURN
LEFT AND GO NORTHLY ON THE PARK ROAD FOR 2.1 MI (3.4 KM) TO THE MAIN PARKING
AREA OF THE DUNNS CREEK STATE PARK PICNIC AREA AND PARKING LOT AND ANOTHER PARK
ROAD ON THE LEFT, TURN LEFT AND GO NORTHLY FOR 0.1 MI (0.2 KM) TO AN OPEN FIELD,
TURN RIGHT AND GO EAST-SOUTHEAST FOR ABOUT 0.05 MI (0.1 KM) TO THE TBM 872 0793
AQUA TRAK. THE 872 0793 AQUA TRAK IS LOCATED 9.97 M (32.7 FT) SOUTHERLY OF THE
NORTHEASTERLYMOST DOCK PILING OF THE WESTERLY MOST WOODEN DOCK. ALSO, BEING 15.9
METERS, OR 52.2 FEET NORTHWESTERLY OF THE SOUTHEASTERLYMOST DOCK CORNER OF THE
SOUTHERLYMOST WOOD DOCK, AND, BEING 11.7 METERS, OR 38.4 FEET NORTHEASTERLY OF
THE SOUTHWESTERLY MOST DOCK CORNER OF THE SOUTHERLYMOST WOOD DOCK.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 0793 A 1993
DESIGNATION: 872 0793 A TIDAL
MONUMENTATION: Tidal Station disk VM#: 5132
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Concrete monument OPUS PID#:
LATITUDE: 29° 33.1' N ( 29.55194) LONGITUDE: 81° 34.4' W ( -81.57278)
The primary bench mark is a disk set in a concrete monument located in the open
field at Piney Bluff Landing south of an abandoned pink block house, 87.63 m
(287.5 ft) SSE of Bench Mark 0793 B 1993, 13 m (44 ft) west of the west bank of
Dunn's Creek, 9.75 m (32.0 ft) south of the SW corner of the block house, and
0.30 m (1.0 ft) NE of a witness post.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 6
Station ID: 8720793 PUBLICATION DATE: 04/17/2025
Name: PINEY BLUFF LANDING, DUNNS CREEK
FL
NOAA Chart: 11495 Latitude: 29° 33.5' N ( 29.55830)
USGS Quad: SAN MATEO Longitude: 81° 34.4' W ( -81.57330)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: PINEY BLUFF 1935
DESIGNATION: PINEY BLUFF
MONUMENTATION: Triangulation Station disk VM#: 5135
AGENCY: CGS IDB PID#:
SETTING CLASSIFICATION: Concrete monument OPUS PID#:
LATITUDE: 29° 33.0' N ( 29.55072) LONGITUDE: 81° 34.4' W ( -81.57278)
The bench mark is a disk set in a concrete monument located near the west bank
of Dunn's Creek east of the right fork from the forked dirt road junction, 36.88
m (121.0 ft) SE of an artesian well, 24.38 m (80.0 ft) east of the intersection
centerline of the dirt roads, 20 m (65 ft) east of Bench Mark PINEY BLUFF NO 5
1935 1969, 13 m (42 ft) west of the creek bank, 0.30 m (1.0 ft) west of a
witness post, and 9 cm (0.3 ft) above ground.
BENCH MARK STAMPING: PINEY BLUFF NO 3 1935
DESIGNATION: 872 0793 PINEY BLUFF 3
MONUMENTATION: Reference Mark disk VM#: 13524
AGENCY: CGS IDB PID#:
SETTING CLASSIFICATION: Concrete monument OPUS PID#:
LATITUDE: 29° 33.1' N ( 29.55103) LONGITUDE: 81° 34.4' W ( -81.57286)
The bench mark is a disk set in a concrete monument located near the west bank
of Dunn's Creek ENE of the right fork from the forked dirt road junction, 36.88
m (121.0 ft) NNE of Bench Mark PINEY BLUFF NO 5 1935 1969, 34.75 m (114.0 ft)
north of Bench Mark PINEY BLUFF 1935, 29.41 m (96.5 ft) ENE of an artesian well,
13 m (43 ft) west of the creek bank, 1.83 m (6.0 ft) SSE of an 18 inch diameter
gum tree, 0.30 m (1.0 ft) east of a witness post, and 3 cm (0.1 ft) above
ground.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 6
Station ID: 8720793 PUBLICATION DATE: 04/17/2025
Name: PINEY BLUFF LANDING, DUNNS CREEK
FL
NOAA Chart: 11495 Latitude: 29° 33.5' N ( 29.55830)
USGS Quad: SAN MATEO Longitude: 81° 34.4' W ( -81.57330)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: PINEY BLUFF NO 5 1935 1969
DESIGNATION: 872 0793 PINEY BLUFF 5
MONUMENTATION: Reference Mark disk VM#: 13525
AGENCY: CGS IDB PID#:
SETTING CLASSIFICATION: Concrete monument OPUS PID#:
LATITUDE: 29° 33.0' N ( 29.55072) LONGITUDE: 81° 34.4' W ( -81.57298)
The bench mark is a disk set in a concrete monument located at the end of the
right fork of the dirt road junction NE of the intersection of the dirt road and
a track road, 32 m (105 ft) west of the west bank of Dunn's creek, 22.40 m (73.5
ft) south of an artesian well, 6 m (21 ft) NE of the intersection centerline of
the dirt and track roads, 0.30 m (1.0 ft) east of a witness post, and 9 cm (0.3
ft) above ground.
BENCH MARK STAMPING: 0793 C 2022
DESIGNATION: 872 0793 C
MONUMENTATION: Flange-encased Rod VM#: 24981
AGENCY: FLDEP IDB PID#:
SETTING CLASSIFICATION: Aluminum alloy rod in sleeve OPUS PID#:
LATITUDE: 29° 33.0' N ( 29.55078) LONGITUDE: 81° 34.4' W ( -81.57352)
The bench mark is and aluminum alloy deep rod located 22.6 m (74.0 ft) east of
the NW corner of a concrete culvert, 19.1 m (62.6 ft) west of the NW corner of a
concrete culvert, 17.4 m (57.1 ft) north of approximate centerline of the park
entrance road and 12.9 m (42.4 ft) SE of the SE corner of a concrete pad of
handy cap parking area.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 6
Station ID: 8720793 PUBLICATION DATE: 04/17/2025
Name: PINEY BLUFF LANDING, DUNNS CREEK
FL
NOAA Chart: 11495 Latitude: 29° 33.5' N ( 29.55830)
USGS Quad: SAN MATEO Longitude: 81° 34.4' W ( -81.57330)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 0793 E 2022
DESIGNATION: 872 0793 E
MONUMENTATION: Flange-encased Rod VM#: 24983
AGENCY: FLDEP IDB PID#:
SETTING CLASSIFICATION: Aluminum alloy rod in sleeve OPUS PID#:
LATITUDE: 29° 32.9' N ( 29.54761) LONGITUDE: 81° 34.7' W ( -81.57831)
The bench mark is located 32.1 m (105.3 ft) NW of the approximate centerline of
the paved park road, 14.5 m (47.6 ft) SE of the approximate centerline of a
hiking trail, 2.3 m (7.7 ft) NE of the approximate centerline of the service
road and 1.0 m (3.3 ft) SW of a carsonite witness post. The datum point is the
top of a rod driven 11.9m (38.9 ft) to refusal and encased in PVC with a FLDEP
logo cap.
BENCH MARK STAMPING: 0793 D 2022
DESIGNATION: 872 0793 D
MONUMENTATION: Flange-encased Rod VM#: 24984
AGENCY: FLDEP IDB PID#:
SETTING CLASSIFICATION: Aluminum alloy rod in sleeve OPUS PID#:
LATITUDE: 29° 33.2' N ( 29.55256) LONGITUDE: 81° 34.4' W ( -81.57325)
The bench mark is and Aluminum alloy deep rod located 40.6 m (133.3 ft) SE of
piney bluff trailhead sign post, 39.0 m (127.8 ft) north of the NW corner of a
cinder block maintenance building, 35.5 m (116.4 ft) NE of the center of chain
gate and 15.5 m (51.0 ft) south of a carsonite witness post. The datum point is
the top of a rod driven 11.9m (38.9 ft) to refusal and encased in PVC with a
FLDEP logo.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 6
Station ID: 8720793 PUBLICATION DATE: 04/17/2025
Name: PINEY BLUFF LANDING, DUNNS CREEK
FL
NOAA Chart: 11495 Latitude: 29° 33.5' N ( 29.55830)
USGS Quad: SAN MATEO Longitude: 81° 34.4' W ( -81.57330)
T I D A L D A T U M S
Tidal datums at PINEY BLUFF LANDING, DUNNS CREEK based on:
LENGTH OF SERIES: 6 MONTHS
TIME PERIOD: January 2024 - June 2024
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:
MEAN HIGHER HIGH WATER MHHW = 0.092
MEAN HIGH WATER MHW = 0.083
MEAN TIDE LEVEL MTL = 0.045
MEAN SEA LEVEL MSL = 0.041
North American Vertical Datum NAVD88 = 0.017
MEAN LOW WATER MLW = 0.009
MEAN LOWER LOW WATER MLLW = 0.000
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
0793 A 1993 0.834 0.751
PINEY BLUFF 1935 1.026 0.943
PINEY BLUFF NO 3 1935 1.028 0.945
PINEY BLUFF NO 5 1935 1969 1.346 1.263
0793 C 2022 1.633 1.550
0793 E 2022 5.576 5.493
0793 D 2022 1.985 1.902
Foot Notes:
Bench marks 0793 C 2022 and 0793 E 2022 are based on one differential leveling
connection and do not meet the quality control standards of the NOS. Therefore,
caution should be used when deriving elevations for these marks.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 6
Station ID: 8720793 PUBLICATION DATE: 04/17/2025
Name: PINEY BLUFF LANDING, DUNNS CREEK
FL
NOAA Chart: 11495 Latitude: 29° 33.5' N ( 29.55830)
USGS Quad: SAN MATEO Longitude: 81° 34.4' W ( -81.57330)
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.