U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 7
Station ID: 8726572 PUBLICATION DATE: 03/18/2011
Name: THE KITCHEN
FL
NOAA Chart: 11413 Latitude: 27° 49.2' N ( 27.82000)
USGS Quad: GIBSONTON Longitude: 82° 23.2' W ( -82.38670)
To reach the tidal bench marks from the south end of the U.S. Highway 41 bridge
over the Alafia River proceed south on U.S. Highway 41 for 3.86 km (2.4 mi) to
the Red Diamond Motel, then east on a drive south of the motel for 0.16 km (0.1
mi) through a small trailer park to Kitchen Creek. The bench marks are located
along U.S. Highway 41. The tide gage and staff were located on a small pier on
the north side of the creek. NOTE: The Red Diamond Motel is no longer there.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 6572 C 1977
DESIGNATION: 872 6572 C TIDAL
MONUMENTATION: Tidal Station disk VM#: 6568
AGENCY: National Ocean Survey (NOS) IDB PID#: AG7607
SETTING CLASSIFICATION: Concrete culvert head wall OPUS PID:
LATITUDE: 27° 49.2' N ( 27.81939) LONGITUDE: 82° 23.0' W ( -82.38297)
The primary bench mark is a disk set in the concrete culvert headwall of the
first drainage culvert south of the old site for Red Diamond Motel, 27.43 m
(90.0 ft) NW of a crossover lane on U.S. Highway 41, 9.14 m (30.0 ft) NE of
power pole, 9.14 m (30.0 ft) WNW of the centerline of the south bound lane of
U.S. Highway 41, 0.40 m (1.3 ft) NE of the SW end of the culvert headwall (first
drainage culvert south of the Red Diamond Motel), and 0.61 m (2.0 ft) below the
highway.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 7
Station ID: 8726572 PUBLICATION DATE: 03/18/2011
Name: THE KITCHEN
FL
NOAA Chart: 11413 Latitude: 27° 49.2' N ( 27.82000)
USGS Quad: GIBSONTON Longitude: 82° 23.2' W ( -82.38670)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 6572 B 1977
DESIGNATION: 872 6572 B TIDAL
MONUMENTATION: Tidal Station disk VM#: 6567
AGENCY: National Ocean Survey (NOS) IDB PID#: AG7608
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 27° 49.3' N ( 27.82122) LONGITUDE: 82° 22.9' W ( -82.38250)
The bench mark is a disk set in a concrete monument south of the Red Diamond
Motel, 25.91 m (85.0 ft) NE of a private drive, 15.82 m (51.9 ft) WNW of the
centerline of the south bound lane of U.S. Highway 41, 10.97 m (36.0 ft) SW of
another private drive, 0.30 m (1.0 ft) north of power pole #7971, 0.27 m (0.9
ft) NE of a witness post, and 0.30 m (1.0 ft) below the highway.
BENCH MARK STAMPING: 6572 D
DESIGNATION: 872 6572 D FLDT
MONUMENTATION: Bench Mark disk VM#: 6569
AGENCY: Florida State Road Department (FLSRD) IDB PID#: AG7606
SETTING CLASSIFICATION: Concrete culvert head wall OPUS PID:
LATITUDE: 27° 49.2' N ( 27.82000) LONGITUDE: 82° 23.2' W ( -82.38670)
The bench mark is a disk set in a concrete culvert headwall, 36.58 m (120.0 ft)
south of Bench Mark 6572 C 1977, 16.46 m (54.0 ft) SW of the centerline of a
crossover lane on U.S. Highway 41, 9.11 m (29.9 ft) north of the south end of a
culvert, 7.60 m (24.9 ft) WNW of the centerline of the southbound lane of U.S.
Highway 41, 4 m (13 ft) SW of the NE end of a culvert, and 1 m (2 ft) below the
highway.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 7
Station ID: 8726572 PUBLICATION DATE: 03/18/2011
Name: THE KITCHEN
FL
NOAA Chart: 11413 Latitude: 27° 49.2' N ( 27.82000)
USGS Quad: GIBSONTON Longitude: 82° 23.2' W ( -82.38670)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: T 694 2007
DESIGNATION: T 694
MONUMENTATION: Bench Mark disk VM#: 19849
AGENCY: Florida Dept. of Environmental
Protection (FLDEP) IDB PID#: DL1722
SETTING CLASSIFICATION: Round concrete monument OPUS PID:
LATITUDE: 27° 48.2' N ( 27.80414) LONGITUDE: 82° 23.1' W ( -82.38461)
The bench mark is a disk set in the top of a round concrete monument flush with
the ground and 0.61 m (2.0 ft) below the level of U.S. Highway 41 southbound
lanes, 56.39 m (185.0 ft) north of the extended centerline of Powell Road, 21.49
m (70.5 ft) west of the centerline of U.S. Highway 41 southbound lanes, 9.91 m
(32.5 ft) SSW of a wooden power pole, 3.05 m (10.0 ft) north of a concrete pole
#080270, and 0.61 m (2.0 ft) east of a carsonite witness post.
BENCH MARK STAMPING: 6572 F 2007
DESIGNATION: 872 6572 F TIDAL
MONUMENTATION: Tidal Station disk VM#: 19850
AGENCY: National Geodetic Survey (NGS) IDB PID#: DL1721
SETTING CLASSIFICATION: Stainless steel rod OPUS PID:
LATITUDE: 27° 49.1' N ( 27.81808) LONGITUDE: 82° 23.0' W ( -82.38308)
The bench mark is a stainless steel rod located 9.54 m (31.3 ft) east of the
centerline of U.S. Highway 41 southbound lanes, 6.64 m (21.8 ft) south of the NW
corner of a concrete drain, 1.83 m (6.0 ft) west of a carsonite witness post,
and 1.22 m (4.0 ft) south of the south face of the concrete drain. The mark is
a stainless steel rod driven to refusal at a depth of 7.32 m (24.0 ft) with a
NGS logo cap recessed 0.09 m (0.3 ft) below the level of the ground and about
0.76 m (2.5 ft) below the level of U.S. Highway 41. The datum point is accessed
through the 5-inch NGS logo cap (with a magnet placed inside) and recessed 0.12
m 0.4 ft) below the level of it.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 7
Station ID: 8726572 PUBLICATION DATE: 03/18/2011
Name: THE KITCHEN
FL
NOAA Chart: 11413 Latitude: 27° 49.2' N ( 27.82000)
USGS Quad: GIBSONTON Longitude: 82° 23.2' W ( -82.38670)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 6572 G 2007
DESIGNATION: 872 6572 G TIDAL
MONUMENTATION: Tidal Station disk VM#: 19851
AGENCY: Florida Dept. of Environmental
Protection (FLDEP) IDB PID#: DL1720
SETTING CLASSIFICATION: Concrete box culvert OPUS PID:
LATITUDE: 27° 49.1' N ( 27.81786) LONGITUDE: 82° 23.0' W ( -82.38342)
The bench mark is a disk set flush in the top of a large box culvert located
37.80 m (124.0 ft) south of bench mark 6572 C 1977, 9.14 m (30.0 ft) west of the
centerline of U.S. HWY 41 southbound lanes, 6.25 m (20.5 ft) south of the north
end of the headwall, 5.33 m (17.5 ft) north of the south end of the headwall and
about 0.30 m (1.0 ft) below the level of U.S. Highway 41 southbound lanes.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 7
Station ID: 8726572 PUBLICATION DATE: 03/18/2011
Name: THE KITCHEN
FL
NOAA Chart: 11413 Latitude: 27° 49.2' N ( 27.82000)
USGS Quad: GIBSONTON Longitude: 82° 23.2' W ( -82.38670)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: VD-152
DESIGNATION: VD 152
MONUMENTATION: Survey disk VM#: 19852
AGENCY: National Ocean Survey (NOS) IDB PID#: DL1719
SETTING CLASSIFICATION: Concrete culvert OPUS PID:
LATITUDE: 27° 49.1' N ( 27.81908) LONGITUDE: 82° 23.0' W ( -82.38303)
The bench mark is located 37.80 m (124.0 ft) south of bench mark 6572 C 1977,
9.14 m (30.0 ft) west of the centerline of U.S. Highway 41 southbound lanes,
6.25 m (20.5 ft) south of the north end of the headwall and 5.33 m (17.5 ft)
north of the south end of the headwall.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 7
Station ID: 8726572 PUBLICATION DATE: 03/18/2011
Name: THE KITCHEN
FL
NOAA Chart: 11413 Latitude: 27° 49.2' N ( 27.82000)
USGS Quad: GIBSONTON Longitude: 82° 23.2' W ( -82.38670)
T I D A L D A T U M S
Tidal datums at THE KITCHEN based on:
LENGTH OF SERIES: 4 MONTHS
TIME PERIOD: December 1978 - March 1979
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 8726520 ST. PETERSBURG, TAMPA BAY
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
MEAN HIGHER HIGH WATER MHHW = 0.736
MEAN HIGH WATER MHW = 0.650
North American Vertical Datum NAVD88 = 0.459
MEAN TIDE LEVEL MTL = 0.376
MEAN SEA LEVEL MSL = 0.375
MEAN LOW WATER MLW = 0.102
MEAN LOWER LOW WATER MLLW = 0.000
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
6572 C 1977 1.228 0.578
6572 B 1977 1.517 0.867
6572 D 1.589 0.939
T 694 2007 2.462 1.812
6572 F 2007 1.165 0.515
6572 G 2007 1.634 0.984
VD-152 1.540 0.890
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 6572 F 2007, 6572 G 2007, T 694
2007, and VD-152 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: 8726572 PUBLICATION DATE: 03/18/2011
Name: THE KITCHEN
FL
NOAA Chart: 11413 Latitude: 27° 49.2' N ( 27.82000)
USGS Quad: GIBSONTON Longitude: 82° 23.2' W ( -82.38670)
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.