U.S. DEPARTMENT OF COMMERCE
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National Ocean Service
Datums Page Page 1 of 7
Station ID: 8728757 PUBLICATION DATE: 03/10/2011
Name: HUCKLEBERRY LANDING, JACKSON RIVER
FL
NOAA Chart: 11401 Latitude: 29° 46.2' N ( 29.77000)
USGS Quad: JACKSON RIVER Longitude: 85° 5.1' W ( -85.08500)
To reach the tidal bench marks from the Franklin County Courthouse in
Apalachicola, proceed west on U.S. Highway 98 for 10.46 km (6.5 mi) to the
junction of County Road C-385, then north on County Road C-385 for 1.45 km (0.9
mi) to the railroad tracks, then across the tracks on the dirt road for 2.09 km
(1.3 mi) to a fork in the road and the gate to the Box R Ranch, bear right and
go 0.80 km (0.5 mi) to a second road fork, bear right and go 0.97 km (0.6 mi) to
the end of the road at the Jackson River. The bench marks are along the dirt
road. The tide gage and staff were located at the end of the 14.63 m (48.0 ft)
catwalk extending into the Jackson River.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 8757 A 1977
DESIGNATION: 872 8757 A TIDAL
MONUMENTATION: Tidal Station disk VM#: 9873
AGENCY: Florida Department of Natural Resources
(FLDNR) IDB PID#: AS0879
SETTING CLASSIFICATION: Concrete Post OPUS PID:
LATITUDE: 29° 46.2' N ( 29.77000) LONGITUDE: 85° 5.1' W ( -85.08500)
The primary bench mark is a disk set in the top of a concrete monument, 11.89 m
(39.0 ft) west of the center of a gate to an abandoned concrete boat ramp, 2.16
m (7.1 ft) south of the fence line, 0.49 m (1.6 ft) south of a metal witness
post, and 0.03 m (0.1 ft) below ground level.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 7
Station ID: 8728757 PUBLICATION DATE: 03/10/2011
Name: HUCKLEBERRY LANDING, JACKSON RIVER
FL
NOAA Chart: 11401 Latitude: 29° 46.2' N ( 29.77000)
USGS Quad: JACKSON RIVER Longitude: 85° 5.1' W ( -85.08500)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 8757 B 1977
DESIGNATION: 872 8757 B TIDAL
MONUMENTATION: Tidal Station disk VM#: 9874
AGENCY: Florida Department of Natural Resources
(FLDNR) IDB PID#: AS0878
SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID:
LATITUDE: 29° 46.1' N ( 29.76833) LONGITUDE: 85° 5.1' W ( -85.08500)
The bench mark is a disk located 67.06 m (220.0 ft) south of the waterway, 62.79
m (206.0 ft) south of bench mark 8757 A 1977, 4.21 m (13.8 ft) west of the
centerline of the dirt road, and 0.30 m (1.0 ft) west of a witness post. The
bench mark is crimped to the top of a copper-clad steel rod driven 12.19 m (40.0
ft) to refusal, and encased in a PVC pipe and concrete kickblock.
BENCH MARK STAMPING: 8757 C 1977
DESIGNATION: 872 8757 C TIDAL
MONUMENTATION: Tidal Station disk VM#: 9875
AGENCY: Florida Department of Natural Resources
(FLDNR) IDB PID#: AS0877
SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID:
LATITUDE: 29° 46.1' N ( 29.76830) LONGITUDE: 85° 5.1' W ( -85.08500)
The bench mark is a disk located 167.64 m (550.0 ft) south along the road from
the waterway, 67.82 m (222.5 ft) south of bench mark 8757 B 1977, 6.64 m (21.8
ft) east of the centerline of the dirt road, and 0.30 m (1.0 ft) west of a metal
witness post. The bench mark is crimped to the top of a copper-clad steel rod
driven 12.19 m (40.0 ft) to refusal, and encased in a 4-inch PVC pipe and
concrete kickblock.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 7
Station ID: 8728757 PUBLICATION DATE: 03/10/2011
Name: HUCKLEBERRY LANDING, JACKSON RIVER
FL
NOAA Chart: 11401 Latitude: 29° 46.2' N ( 29.77000)
USGS Quad: JACKSON RIVER Longitude: 85° 5.1' W ( -85.08500)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 8757 D 1977
DESIGNATION: 872 8757 D TIDAL
MONUMENTATION: Tidal Station disk VM#: 9876
AGENCY: Florida Department of Natural Resources
(FLDNR) IDB PID#: AS0876
SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID:
LATITUDE: 29° 46.1' N ( 29.76830) LONGITUDE: 85° 5.1' W ( -85.08500)
The bench mark is a disk located 236.22 m (775.0 ft) south along the road from
the waterway, 69.43 m (227.8 ft) south of bench mark 8757 C 1977, 7.62 m (25.0
ft) east of the centerline of the dirt road, and 0.15 m (0.5 ft) west of a metal
witness post. The bench mark is crimped to the top of a copper-clad steel rod
driven 12.19 m (40.0 ft) to refusal, encased in a 4-inch PVC pipe and concrete
kick-block.
BENCH MARK STAMPING: 8757 E 1977
DESIGNATION: 872 8757 E TIDAL
MONUMENTATION: Tidal Station disk VM#: 9877
AGENCY: Florida Department of Natural Resources
(FLDNR) IDB PID#: AS0875
SETTING CLASSIFICATION: Concrete Post OPUS PID:
LATITUDE: 29° 46.0' N ( 29.76667) LONGITUDE: 85° 5.1' W ( -85.08500)
The bench mark is a disk set in the top of a concrete monument, 304.8 m (1000.0
ft) south along the road from the waterway, 87.02 m (285.5 ft) south of bench
mark 8757 D 1977, 7.96 m (26.1 ft) west of the centerline of the dirt road, 0.76
m (2.5 ft) east of a metal witness post, and 0.06 m (0.2 ft) below the ground.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 7
Station ID: 8728757 PUBLICATION DATE: 03/10/2011
Name: HUCKLEBERRY LANDING, JACKSON RIVER
FL
NOAA Chart: 11401 Latitude: 29° 46.2' N ( 29.77000)
USGS Quad: JACKSON RIVER Longitude: 85° 5.1' W ( -85.08500)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: FRA 1 1985 BSM
DESIGNATION: FRA 1
MONUMENTATION: Bench Mark disk VM#: 19028
AGENCY: Florida Dept. of Natural Resources
(FLDNR) IDB PID#: AS0874
SETTING CLASSIFICATION: Concrete Post OPUS PID:
LATITUDE: 29° 45.4' N ( 29.75667) LONGITUDE: 85° 5.3' W ( -85.08833)
The bench mark is a disk located 19.81 m (65.0 ft) east of the centerline of the
road left, (11.1 ft) WNW of the centerline of the road right, 1.95 m (6.4 ft)
NNW of a carsonite witness post, 1.77 m (5.8 ft) SW of the west gate post on the
road right, and 0.55 m (1.8 ft) SSW of a witness post.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 7
Station ID: 8728757 PUBLICATION DATE: 03/10/2011
Name: HUCKLEBERRY LANDING, JACKSON RIVER
FL
NOAA Chart: 11401 Latitude: 29° 46.2' N ( 29.77000)
USGS Quad: JACKSON RIVER Longitude: 85° 5.1' W ( -85.08500)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: FRA 2 1985 BSM
DESIGNATION: FRA 2
MONUMENTATION: Bench Mark disk VM#: 19029
AGENCY: Florida Dept. of Natural Resources
(FLDNR) IDB PID#: AS0873
SETTING CLASSIFICATION: Concrete Post OPUS PID:
LATITUDE: 29° 44.5' N ( 29.74167) LONGITUDE: 85° 5.0' W ( -85.08333)
The bench mark is a disk located 38.40 m (126.0 ft) north of a corrugated pipe
under the road, 7.77 m (25.5 ft) east of the centerline of the road, 2.87 m (9.4
ft) north of power pole 56X1792R, 1.86 m (6.1 ft) ENE of a carsonite witness
post, 0.46 m (1.5 ft) west of a witness post, and 0.61 m (2.0 ft) below the
level of the road.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 7
Station ID: 8728757 PUBLICATION DATE: 03/10/2011
Name: HUCKLEBERRY LANDING, JACKSON RIVER
FL
NOAA Chart: 11401 Latitude: 29° 46.2' N ( 29.77000)
USGS Quad: JACKSON RIVER Longitude: 85° 5.1' W ( -85.08500)
T I D A L D A T U M S
Tidal datums at HUCKLEBERRY LANDING, JACKSON RIVER based on:
LENGTH OF SERIES: 3 MONTHS
TIME PERIOD: June 1977 - August 1977
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 8728360 TURKEY POINT
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
MEAN HIGHER HIGH WATER MHHW = 0.369
MEAN HIGH WATER MHW = 0.335
MEAN TIDE LEVEL MTL = 0.226
MEAN SEA LEVEL MSL = 0.213
North American Vertical Datum NAVD88 = 0.158
MEAN LOW WATER MLW = 0.117
MEAN LOWER LOW WATER MLLW = 0.000
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
8757 A 1977 0.940 0.605
8757 B 1977 0.824 0.489
8757 C 1977 0.721 0.386
8757 D 1977 1.098 0.763
8757 E 1977 1.225 0.890
FRA 1 1985 BSM 3.097 2.762
FRA 2 1985 BSM 1.718 1.383
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 FRA 1 1985 BSM and FRA 2 1985 BSM
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: 8728757 PUBLICATION DATE: 03/10/2011
Name: HUCKLEBERRY LANDING, JACKSON RIVER
FL
NOAA Chart: 11401 Latitude: 29° 46.2' N ( 29.77000)
USGS Quad: JACKSON RIVER Longitude: 85° 5.1' W ( -85.08500)
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.