U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 7
Station ID: 8722478 PUBLICATION DATE: 01/20/2011
Name: NORTH FORK, LOXAHATCHEE RIVER
FL
NOAA Chart: 11474 Latitude: 26° 58.5' N ( 26.97500)
USGS Quad: JUPITER Longitude: 80° 6.8' W ( -80.11330)
To reach the tidal bench marks from the intersection of U.S. Highway 1 and
Tequesta Drive in Tequesta, proceed 2.6 km (1.6 mi) west on Tequesta Drive to
Country Club Drive, then turn right and proceed north on Country Club Drive for
1.8 km (1.1 mi) to the entrance to Turtle Creek development, then turn left and
proceed north on Concourse Drive for 0.40 km (0.25 mi) to Hitching Post Circle,
then turn right and proceed NE on Hitching Post Circle for 0.2 km (0.1 mi) to
Saddleback Road. The bench marks are in the vicinity of 29 Saddleback Road and
at the intersection of Saddleback Road and Turtle Creek Drive. The tide gage
and staff were located on the pier at the rear of 31 Saddleback Road.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: NO 1 1972
DESIGNATION: 872 2478 TIDAL 1
MONUMENTATION: Tidal Station disk VM#: 5506
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: AD5793
SETTING CLASSIFICATION: Concrete sea wall OPUS PID:
LATITUDE: 25° 58.6' N ( 25.97667) LONGITUDE: 80° 6.9' W ( -80.11500)
The primary bench mark is a disk set flush in the concrete sea wall in the rear
of 29 Saddleback Road, 13.66 m (44.8 ft) ESE of the NE corner of the 1-story
residence, 11.16 m (36.6 ft) north of bench mark NO 2 1972, 4.57 m (15 ft) north
of the centerline of a small pier, 1.68 m (5.5 ft) NW of the NE corner of the
sea wall, 1.37 m (4.5 ft) NE of the NE end of a 0.61 m (2 ft) high cinder block
retaining wall and 0.52 m (1.7 ft) SE of the NW end of the sea wall.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 7
Station ID: 8722478 PUBLICATION DATE: 01/20/2011
Name: NORTH FORK, LOXAHATCHEE RIVER
FL
NOAA Chart: 11474 Latitude: 26° 58.5' N ( 26.97500)
USGS Quad: JUPITER Longitude: 80° 6.8' W ( -80.11330)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: NO 2 1972
DESIGNATION: 872 2478 TIDAL 2
MONUMENTATION: Tidal Station disk VM#: 5507
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: AD5794
SETTING CLASSIFICATION: Concrete sea wall OPUS PID:
LATITUDE: 26° 58.6' N ( 26.97670) LONGITUDE: 80° 6.9' W ( -80.11500)
The bench mark is a disk set flush in a concrete sea wall in the rear of 29
Saddleback Road, 16.98 m (55.7 ft) ENE of the SE corner of the 1-story
residence, 11.16 m (36.6 ft) south of bench mark NO 1 1972, 7.16 m (23.5 ft)
east of the SE corner of the pool deck, 6.68 m (21.9 ft) south of the centerline
of a small pier, 1.98 m (6.5 ft) east of the south end of a 0.6 m (2 ft) high
cinder block retaining wall, and 0.98 m (3.2 ft) SW of the SE corner of the sea
wall.
BENCH MARK STAMPING: NO 3 1972
DESIGNATION: 872 2478 TIDAL 3
MONUMENTATION: Tidal Station disk VM#: 5508
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: AD5797
SETTING CLASSIFICATION: Concrete catch basin OPUS PID#: AD5797
LATITUDE: 26° 58.7' N ( 26.97833) LONGITUDE: 80° 6.9' W ( -80.11500)
The bench mark is a disk set flush in the concrete catch basin in the NE corner
of a 3.5 foot square concrete catch basin near the intersection of Saddleback
Road and Turtle Creek Drive, 20.27 m (66.5 ft) NE of bench mark NO 5 1972, 11.89
m (39 ft) east of bench mark NO 4 1972, 6.10 m (20 ft) east of the centerline of
Saddleback Road, and 3.29 m (10.8 ft) north of utility pole #6-7742-6640-0-1.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 7
Station ID: 8722478 PUBLICATION DATE: 01/20/2011
Name: NORTH FORK, LOXAHATCHEE RIVER
FL
NOAA Chart: 11474 Latitude: 26° 58.5' N ( 26.97500)
USGS Quad: JUPITER Longitude: 80° 6.8' W ( -80.11330)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: NO 4 1972
DESIGNATION: 872 2478 TIDAL 4
MONUMENTATION: Tidal Station disk VM#: 5509
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: AD5796
SETTING CLASSIFICATION: Concrete Catch Basin OPUS PID#: AD5796
LATITUDE: 26° 58.7' N ( 26.97833) LONGITUDE: 80° 6.9' W ( -80.11500)
The bench mark is a disk set flush in the concrete catch basin in the SW corner
of a 3.5 foot square near the intersection of Saddleback Road and Turtle Creek
Drive, 15.54 m (51 ft) north of bench mark NO 5 1972, 11.89 m (39 ft) west of
bench mark NO 3 1972, 11.43 m (37.5 ft) WNW of utility pole #6-7742-6640-0-1,
7.32 m (24 ft) north of the centerline of Turtle Creek Road, and 5.79 m (19 ft)
west of the centerline of Saddleback Road.
BENCH MARK STAMPING: NO 5 1972
DESIGNATION: 872 2478 TIDAL 5
MONUMENTATION: Tidal Station disk VM#: 5510
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: AD5795
SETTING CLASSIFICATION: Concrete Catch Basin OPUS PID:
LATITUDE: 26° 58.6' N ( 26.97670) LONGITUDE: 80° 6.9' W ( -80.11500)
The bench mark is a disk set flush in the concrete catch basin in the NW corner
of a 3.5-foot square near the intersection of Saddleback Road and Turtle Creek
Drive, 20.27 m (66.5 ft) SW of bench mark NO 3 1972, 17.34 m (56.9 ft) SW of
utility pole #6-7742-6640-0-1, 15.54 m (51 ft) south of bench mark NO 4 1972,
8.23 m (27 ft) south of the centerline of Turtle Creek Drive, and 6.0 m (20 ft)
west of the centerline of Saddleback Road.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 7
Station ID: 8722478 PUBLICATION DATE: 01/20/2011
Name: NORTH FORK, LOXAHATCHEE RIVER
FL
NOAA Chart: 11474 Latitude: 26° 58.5' N ( 26.97500)
USGS Quad: JUPITER Longitude: 80° 6.8' W ( -80.11330)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: PAL B 2 1980
DESIGNATION: PAL B 2 FLDNR
MONUMENTATION: Bench Mark disk VM#: 18944
AGENCY: Florida Department of Natural Resources
(FLDNR) IDB PID#: AD5792
SETTING CLASSIFICATION: Concrete Post OPUS PID:
LATITUDE: 26° 58.2' N ( 26.97000) LONGITUDE: 80° 6.9' W ( -80.11500)
The benchmark is a disk located 18.99 m (62.3 ft) west of the centerline of the
road to Turtle Creek development, almost directly across from the center of the
junction of North Place with Country Club Road, 6.86 m (22.5 ft) south of power
pole 586C1202 with a witness sign attached, and 4.75 m (15.6 ft) north of the
country club road centerline.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 7
Station ID: 8722478 PUBLICATION DATE: 01/20/2011
Name: NORTH FORK, LOXAHATCHEE RIVER
FL
NOAA Chart: 11474 Latitude: 26° 58.5' N ( 26.97500)
USGS Quad: JUPITER Longitude: 80° 6.8' W ( -80.11330)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: PAL B 3 1980
DESIGNATION: PAL B 3 FLDNR
MONUMENTATION: Bench Mark disk VM#: 18945
AGENCY: Florida Department of Natural Resources
(FLDNR) IDB PID#: AD5791
SETTING CLASSIFICATION: Concrete Drain OPUS PID:
LATITUDE: 26° 58.0' N ( 26.96667) LONGITUDE: 80° 6.6' W ( -80.11000)
The benchmark is a disk located 46.18 m (151.5 ft) north of Tradewinds Circle
centerline, 70.71 m (232.0 ft) south of Country Club Circle, 8.53 m (28.0 ft)
east of Country Club Drive centerline, and 0.70 m (2.3 ft) west of a witness
post. A carsonite witness post was placed 0.98 m (3.2 ft) east of the mark.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 7
Station ID: 8722478 PUBLICATION DATE: 01/20/2011
Name: NORTH FORK, LOXAHATCHEE RIVER
FL
NOAA Chart: 11474 Latitude: 26° 58.5' N ( 26.97500)
USGS Quad: JUPITER Longitude: 80° 6.8' W ( -80.11330)
T I D A L D A T U M S
Tidal datums at NORTH FORK, LOXAHATCHEE RIVER based on:
LENGTH OF SERIES: 2 MONTHS
TIME PERIOD: December 1972 - January 1973
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 8722557 NORTH PALM BEACH
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
MEAN HIGHER HIGH WATER MHHW = 0.676
North American Vertical Datum NAVD88 = 0.631
MEAN HIGH WATER MHW = 0.628
MEAN TIDE LEVEL MTL = 0.338
MEAN SEA LEVEL MSL = 0.337
MEAN LOW WATER MLW = 0.047
MEAN LOWER LOW WATER MLLW = 0.000
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
NO 1 1972 0.981 0.353
NO 2 1972 0.985 0.357
NO 3 1972 2.197 1.569
NO 4 1972 2.301 1.673
NO 5 1972 2.307 1.679
PAL B 2 1980 2.779 2.151
PAL B 3 1980 1.711 1.083
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 PAL B 2 1980 and PAL B 3 1980 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: 8722478 PUBLICATION DATE: 01/20/2011
Name: NORTH FORK, LOXAHATCHEE RIVER
FL
NOAA Chart: 11474 Latitude: 26° 58.5' N ( 26.97500)
USGS Quad: JUPITER Longitude: 80° 6.8' W ( -80.11330)
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.