U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 5
PUBLICATION DATE: 10/23/1984
Station ID: 8727843 SUPERCEDED DATE: 04/21/2003
Name: SPRING WARRIOR CREEK, GULF OF MEXICO
FLORIDA
NOAA Chart: 11407 Latitude: 29° 55.2' N
USGS Quad: OKEENOKEE SLOUGH Longitude: 83° 40.3' W
To reach the tidal bench marks from the intersection pf U.S. Highway 19/98 and
County Road 361A proceed south on C361A 12.6 miles (20.3 km) to a
T-intersection, south 1.7 miles (2.7 km) to Spring Warrior Creek Fish Camp. The
bench marks are located along C361A and the road leading to the creek and the
tide gage and staff were located on a free standing structure in the creek.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 7843 A 1978 CLB
MONUMENTATION: Survey Disk VM#: 8249
AGENCY: PID#: AR1485
SETTING CLASSIFICATION: Concrete Post
The bench mark is set in a concrete post, 208.0 feet (63.4 m) SE of Bench Mark
7843 B 1978 CLB, 43.5 feet (13.3 m) NNE of the shoreline, 28.0 feet (8.5 m) NNE
of the centerline of the dirt road along Spring Warrior Creek in front of the
fish camp, 11.0 feet (3.4 m) SE of the centerline of a dirt road to a residence,
and 2.7 feet (0.8 m) SW of a witness post.
BENCH MARK STAMPING: 7843 B 1978 CLB
MONUMENTATION: Survey Disk VM#: 8250
AGENCY: PID#: AR1484
SETTING CLASSIFICATION: Concrete Post
The bench mark is located 277 feet (84 m) SW of Bench Mark 7843 C 1978 CLB, 208
feet (63 m) NW of Bench Mark 7843 A 1978 CLB, 50 feet (15 m) SE of a doubled
trunked oak, 40 feet (12 m) east of a utility pole numbered J7-31-19L with a
security light and transformer, 39 feet (12 m) east of the SE corner of a
cottage, 38 feet (12 m) south of the Y-intersection of dirt roads near Spring
Warrior Creek Fish Camp, 3 feet (1.0 m) south of a witness post and 0.2 foot
(0.1 m) below ground level.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 5
PUBLICATION DATE: 10/23/1984
Station ID: 8727843 SUPERCEDED DATE: 04/21/2003
Name: SPRING WARRIOR CREEK, GULF OF MEXICO
FLORIDA
NOAA Chart: 11407 Latitude: 29° 55.2' N
USGS Quad: OKEENOKEE SLOUGH Longitude: 83° 40.3' W
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 7843 C 1978 CLB
MONUMENTATION: Survey Disk VM#: 8251
AGENCY: PID#: AR1483
SETTING CLASSIFICATION: Concrete Post
The bench mark is set in a concrete post, 425 feet (138 m) SW of Bench Mark 7843
D 1978 CLB, 40 feet (12 m) SW of the intersection of C361A and the southernmost
road leading west, 7.5 feet (2.3 m) NW of a cedar tree, 3.8 feet (1.2 m) SE of a
utility pole with a transformer, 3.8 feet (1.2 m) NE of a witness post, and 0.2
foot (0.1 m) below ground level.
BENCH MARK STAMPING: 7843 D 1978 CLB
MONUMENTATION: Survey Disk VM#: 8252
AGENCY: PID#: AR1482
SETTING CLASSIFICATION: Concrete Post
The bench mark is set in a concrete post, 123 feet (37 m) SW of the intersection
of C361A and the third last most southern road leading west, 85.7 feet (26.1 m)
SW of a utility pole, 54 feet (16 m) north of the end of the pavement of C361A,
50.6 feet (15.4 m) NW of the centerline of C361A, 4 feet (1.0 m) SE of a witness
post, and level with the ground.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 5
PUBLICATION DATE: 10/23/1984
Station ID: 8727843 SUPERCEDED DATE: 04/21/2003
Name: SPRING WARRIOR CREEK, GULF OF MEXICO
FLORIDA
NOAA Chart: 11407 Latitude: 29° 55.2' N
USGS Quad: OKEENOKEE SLOUGH Longitude: 83° 40.3' W
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 7843 E 1978 CLB
MONUMENTATION: Survey Disk VM#: 8253
AGENCY: PID#: AR1486
SETTING CLASSIFICATION: Bedrock
The bench mark is set in projecting bedrock 108 feet (33 m) NNE of the
centerline of the dirt road along the creek, 104.5 feet (31.9 m) NW of Bench
Mark 7843 A 1978 CLB, 46.4 feet (14.1 m) SW of the SW corner of a private
residence, 41.6 feet (12.7 m) west of the centerline of a dirt road to the
residence, 8.6 feet (2.6 m) WNW of a metal witness post, and 0.4 feet (0.1 m)
above ground level.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 5
PUBLICATION DATE: 10/23/1984
Station ID: 8727843 SUPERCEDED DATE: 04/21/2003
Name: SPRING WARRIOR CREEK, GULF OF MEXICO
FLORIDA
NOAA Chart: 11407 Latitude: 29° 55.2' N
USGS Quad: OKEENOKEE SLOUGH Longitude: 83° 40.3' W
T I D A L D A T U M S
Tidal datums at SPRING WARRIOR CREEK, GULF OF MEXICO based on:
LENGTH OF SERIES: 6 MONTHS
TIME PERIOD: JUNE THROUGH NOVEMBER 1978
TIDAL EPOCH: 1960-1978
CONTROL TIDE STATION: 8727520 CEDAR KEY
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in FEET:
HIGHEST OBSERVED WATER LEVEL (07/18/1978) = 4.90
MEAN HIGHER HIGH WATER MHHW = 3.42
MEAN HIGH WATER MHW = 3.15
MEAN TIDE LEVEL MTL = 1.84
MEAN LOW WATER MLW = 0.52
MEAN LOWER LOW WATER MLLW = 0.00
LOWEST OBSERVED WATER LEVEL (12/12/1978) = -0.45
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In FEET above:
Stamping or Designation MLLW MHW
7843 A 1978 CLB 5.27 2.12
7843 B 1978 CLB 5.69 2.54
7843 C 1978 CLB 6.04 2.89
7843 D 1978 CLB 5.91 2.76
7843 E 1978 CLB 5.03 1.88
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 5
PUBLICATION DATE: 10/23/1984
Station ID: 8727843 SUPERCEDED DATE: 04/21/2003
Name: SPRING WARRIOR CREEK, GULF OF MEXICO
FLORIDA
NOAA Chart: 11407 Latitude: 29° 55.2' N
USGS Quad: OKEENOKEE SLOUGH Longitude: 83° 40.3' W
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 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.