U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 5
Station ID: 8720833 PUBLICATION DATE: 08/05/2005
Name: SMITH CREEK, FLAGLER BEACH
FL
NOAA Chart: 11485 Latitude: 29° 28.7' N ( 29.47830)
USGS Quad: FLAGLER BEACH WEST Longitude: 81° 8.2' W ( -81.13670)
To reach the tidal bench marks from the intersection of Florida Highway AIA and
State Road 100 in Flagler Beach City Limits, proceed 0.8 km (0.5 m i) SW on
State Road 100 to its intersection with Lehigh Avenue, then 0.08 km (0.05 mi) to
Maria's Marina on the SW side of the road. The tide gage and staff were located
on the dock belonging to Maria S. Wood. The bench marks are located in the
vicinity and south of Maria's Marina near the intersection of State Road 100 and
Lehigh Avenue.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 0833 A 1978
DESIGNATION: 872 0833 A TIDAL
MONUMENTATION: Tidal Station disk VM#: 10754
AGENCY: National Ocean Survey (NOS) IDB PID#: AQ1748
SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID#: AQ1748
LATITUDE: 29° 28.7' N ( 29.47861) LONGITUDE: 81° 8.1' W ( -81.13472)
The primary bench mark is a disk located 13.72 m (45.0 ft) north of the dirt
drive leading to Maria's Marina, 6.10 m (20.0 ft) west of the centerline of
Lehigh Avenue, 1.22 m (4.0 ft) NNE of the Lehigh Avenue street sign, and 0.91 m
(3.0 ft) south of a power pole with a witness sign. The bench mark is set 0.03
m (0.1 ft) below ground level, crimped to the top of a copper-clad steel rod
driven 10.36 m (34.0 ft) to refusal, encased inside a PVC pipe and surrounded by
concrete.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 5
Station ID: 8720833 PUBLICATION DATE: 08/05/2005
Name: SMITH CREEK, FLAGLER BEACH
FL
NOAA Chart: 11485 Latitude: 29° 28.7' N ( 29.47830)
USGS Quad: FLAGLER BEACH WEST Longitude: 81° 8.2' W ( -81.13670)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 0833 B 1978
DESIGNATION: 872 0833 B TIDAL
MONUMENTATION: Tidal Station disk VM#: 10755
AGENCY: National Ocean Survey (NOS) IDB PID#: AQ1747
SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID:
LATITUDE: 29° 28.7' N ( 29.47830) LONGITUDE: 81° 8.2' W ( -81.13670)
The bench mark is a disk located NW of the intersection of State Road 100, 6.40
m (21.0 ft) west of the centerline of Lehigh Avenue, 6.40 m (21.0 ft) north of
the centerline of a service road leading westerly to "Jims River House
Restaurant," and 0.79 m (2.6 ft) north of a power pole with a witness post. The
bench mark is crimped to the top of a copper-clad steel rod driven 9.75 m (32.0
ft) to refusal, encased inside a PVC pipe and surrounded by concrete.
BENCH MARK STAMPING: 0833 C 1978
DESIGNATION:
MONUMENTATION: Tidal Station disk VM#: 10756
AGENCY: National Ocean Survey (NOS) IDB PID#: AQ1746
SETTING CLASSIFICATION: Concrete base OPUS PID:
LATITUDE: 29° 28.7' N ( 29.47830) LONGITUDE: 81° 8.2' W ( -81.13670)
The bench mark is a disk set flush in a concrete base on the eastern side of
State Road 100 bridge over the Interacoastal Waterway, 83.82 m (275.0 ft) WSW of
Bench Mark 0833 B 1978, 48.77 m (160.0 ft) east of the east end of State Road
100 highway bridge, 9.27 m (30.4 ft) north of the centerline of State Road 100,
1.52 m (5.0 ft) west of the east end of the bridge guardrail, 0.34 m (1.1 ft)
north of the edge of the guardrail, and 0.3 m (1.0 ft) south of a witness post.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 5
Station ID: 8720833 PUBLICATION DATE: 08/05/2005
Name: SMITH CREEK, FLAGLER BEACH
FL
NOAA Chart: 11485 Latitude: 29° 28.7' N ( 29.47830)
USGS Quad: FLAGLER BEACH WEST Longitude: 81° 8.2' W ( -81.13670)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: J 319 1970
DESIGNATION: J 319
MONUMENTATION: Tidal Station disk VM#: 10757
AGENCY: National Ocean Survey (NOS) IDB PID#: AQ0888
SETTING CLASSIFICATION: Abutment of Bridge OPUS PID:
LATITUDE: 29° 28.7' N ( 29.47830) LONGITUDE: 81° 8.2' W ( -81.13670)
The bench mark is a disk set on the top of the north end of the east abutment of
the highway bridge over the Intracoastal Waterway, 0.89 km (0.55 mi) west of the
intersection of State Highway AIA and State Road 100, 6.0 m (19.7 ft) north of
the centerline of State Road 100, and 0.3 m (1.0 ft) above the level of the
highway.
BENCH MARK STAMPING: 32 IWF 1951
DESIGNATION: 32 IWF
MONUMENTATION: Tidal Station disk VM#: 10758
AGENCY: COE IDB PID#: AQ0889
SETTING CLASSIFICATION: Concrete walkway OPUS PID:
LATITUDE: 29° 28.7' N ( 29.47830) LONGITUDE: 81° 8.2' W ( -81.13670)
The bench mark is a disk set on the top of the south concrete walkway near the
western end of the highway bridge over the Intracoastal Waterway, 5 m (16 ft)
south of the centerline of State Road 100, 4 m (13 ft) east of the west end of
the concrete walkway, and 0.3 m (1.0 ft) above the level of the highway.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 5
Station ID: 8720833 PUBLICATION DATE: 08/05/2005
Name: SMITH CREEK, FLAGLER BEACH
FL
NOAA Chart: 11485 Latitude: 29° 28.7' N ( 29.47830)
USGS Quad: FLAGLER BEACH WEST Longitude: 81° 8.2' W ( -81.13670)
T I D A L D A T U M S
Tidal datums at SMITH CREEK, FLAGLER BEACH based on:
LENGTH OF SERIES: 3 MONTHS
TIME PERIOD: January 1979 - March 1979
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 8721120 DAYTONA BEACH SHORES
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
MEAN HIGHER HIGH WATER MHHW = 0.329
MEAN HIGH WATER MHW = 0.288
North American Vertical Datum NAVD88 = 0.238
MEAN SEA LEVEL MSL = 0.160
MEAN TIDE LEVEL MTL = 0.154
MEAN LOW WATER MLW = 0.021
MEAN LOWER LOW WATER MLLW = 0.000
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
0833 A 1978 1.570 1.282
0833 B 1978 1.796 1.508
0833 C 1978 2.943 2.655
J 319 1970 5.486 5.198
32 IWF 1951 5.501 5.213
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 5
Station ID: 8720833 PUBLICATION DATE: 08/05/2005
Name: SMITH CREEK, FLAGLER BEACH
FL
NOAA Chart: 11485 Latitude: 29° 28.7' N ( 29.47830)
USGS Quad: FLAGLER BEACH WEST Longitude: 81° 8.2' W ( -81.13670)
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.