U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 5
Station ID: 8726899 PUBLICATION DATE: 02/26/2004
Name: KREAMER BAYOU
FL
NOAA Chart: 11412 Latitude: 28° 9.0' N ( 28.15000)
USGS Quad: TARPON SPRINGS Longitude: 82° 46.3' W ( -82.77170)
To reach the tidal bench marks from the intersection of U.S. Highway ALT 19
(Pinellas Avenue) and State Road 582 (Tarpon Avenue) in Tarpon Springs, proceed
west on Tarpon Avenue for 0.24 km (0.15 mi) to Spring Boulevard, then turn right
and proceed north and west on Spring Boulevard, which becomes Riverside Drive,
for 2.7 km (1.7 mi) to Sunset Drive, then proceed east on Sunset Drive for 0.5
km (0.3 mi) to Bayshore Drive. The bench marks are located along Sunset Drive,
west of Bayshore Drive. The tide gage and staff were located off the private
dock at # 722 Bayshore Drive.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: NO 1 1976
DESIGNATION: 872 6899 TIDAL 1
MONUMENTATION: Tidal Station disk VM#: 7638
AGENCY: National Ocean Survey (NOS) IDB PID#: AL7380
SETTING CLASSIFICATION: Concrete drain gutter OPUS PID#: AL7380
LATITUDE: 28° 9.0' N ( 28.15000) LONGITUDE: 82° 46.3' W ( -82.77170)
The primary bench mark is a disk set flush in concrete drain gutter at the NE
corner of the intersection of Bayshore and Sunset Drives, 91 m (300 ft) south of
the house at #722 Bayshore Drive, 9 m (28 ft) north of the centerline of Sunset
Drive, and 4.11 m (13.5 ft) east of the centerline of Bayshore Drive.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 5
Station ID: 8726899 PUBLICATION DATE: 02/26/2004
Name: KREAMER BAYOU
FL
NOAA Chart: 11412 Latitude: 28° 9.0' N ( 28.15000)
USGS Quad: TARPON SPRINGS Longitude: 82° 46.3' W ( -82.77170)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: NO 3 1976
DESIGNATION: 872 6899 TIDAL 3
MONUMENTATION: Tidal Station disk VM#: 7639
AGENCY: National Ocean Survey (NOS) IDB PID#: AL7378
SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID:
LATITUDE: 28° 9.0' N ( 28.15000) LONGITUDE: 82° 46.3' W ( -82.77170)
The bench mark is a disk located at the SE corner of Eunice and Sunset Drives, 8
m (26 ft) south of the centerline of Sunset Drive, 5 m (17 ft) east of the
centerline of Eunice Drive, 0.46 m (1.5 ft) west of a powerline pole, and 0.76 m
(2.5 ft) east of a fire hydrant. The bench mark is set at ground level, crimped
to the top of a copper-clad steel rod driven 7.0 m (23 ft) to refusal, and
encased in a PVC pipe and concrete kickblock.
BENCH MARK STAMPING: NO 4 1976
DESIGNATION: 872 6899 TIDAL 4
MONUMENTATION: Tidal Station disk VM#: 7640
AGENCY: National Ocean Survey (NOS) IDB PID#: AL7377
SETTING CLASSIFICATION: Concrete manhole collar OPUS PID:
LATITUDE: 28° 9.0' N ( 28.15000) LONGITUDE: 82° 46.3' W ( -82.77170)
The bench mark is a disk set flush in the concrete manhole collar at the SW
corner of Sunset and Eunice Drives, 10 m (33 ft) west of bench mark NO 3 1976, 7
m (24 ft) south of the centerline of Sunset Drive, 5 m (16 ft) west of the
centerline of Eunice Drive, and projects 0.18 m (0.6 ft) above Sunset Drive.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 5
Station ID: 8726899 PUBLICATION DATE: 02/26/2004
Name: KREAMER BAYOU
FL
NOAA Chart: 11412 Latitude: 28° 9.0' N ( 28.15000)
USGS Quad: TARPON SPRINGS Longitude: 82° 46.3' W ( -82.77170)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: NO 5 1976
DESIGNATION: 872 6899 TIDAL 5
MONUMENTATION: Tidal Station disk VM#: 7641
AGENCY: National Ocean Survey (NOS) IDB PID#: AL7376
SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID:
LATITUDE: 28° 9.0' N ( 28.15000) LONGITUDE: 82° 46.3' W ( -82.77170)
The bench mark is a disk located 93 m (305 ft) west of bench mark NO 4 1976,
8.08 m (26.5 ft) south of the centerline of Sunset Drive, and 0.3 m (1 ft) west
of a power pole. The bench mark is crimped to the top of a copper-clad steel
rod driven 7.0 m (23 ft) to refusal, and encased in a 4-inch PVC pipe and
concrete kickblock.
BENCH MARK STAMPING: NO 2 1976
DESIGNATION: 872 6899 TIDAL 2
MONUMENTATION: Tidal Station disk VM#: 16457
AGENCY: National Ocean Survey (NOS) IDB PID#: AL7379
SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID#: AL7379
LATITUDE: 28° 9.0' N ( 28.15000) LONGITUDE: 82° 46.3' W ( -82.77170)
The bench mark is a disk set at the SW corner of the intersection of Sunset
Drive and Bayshore Drive, 10.67 m (35.0 ft) west of the centerline of Bayshore
Drive, 4.57 m (15.0 ft) south of the centerline of Sunset Drive, and 0.61 m (2.0
ft) west of a stop sign. The bench mark is set at ground level, crimped to the
top of a copper-clad steel rod driven to an unspecified depth to refusal, and
encased in a PVC pipe and concrete kickblock.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 5
Station ID: 8726899 PUBLICATION DATE: 02/26/2004
Name: KREAMER BAYOU
FL
NOAA Chart: 11412 Latitude: 28° 9.0' N ( 28.15000)
USGS Quad: TARPON SPRINGS Longitude: 82° 46.3' W ( -82.77170)
T I D A L D A T U M S
Tidal datums at KREAMER BAYOU based on:
LENGTH OF SERIES: 1 MONTH
TIME PERIOD: January 1976 - January 1976
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 8726924 ANCLOTE RIVER
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
MEAN HIGHER HIGH WATER MHHW = 0.916
MEAN HIGH WATER MHW = 0.805
North American Vertical Datum NAVD88 = 0.546
MEAN SEA LEVEL MSL = 0.487
MEAN TIDE LEVEL MTL = 0.481
MEAN LOW WATER MLW = 0.157
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 1976 1.215 0.410
NO 3 1976 1.406 0.601
NO 4 1976 1.751 0.946
NO 5 1976 2.228 1.423
NO 2 1976 1.226 0.421
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 5
Station ID: 8726899 PUBLICATION DATE: 02/26/2004
Name: KREAMER BAYOU
FL
NOAA Chart: 11412 Latitude: 28° 9.0' N ( 28.15000)
USGS Quad: TARPON SPRINGS Longitude: 82° 46.3' W ( -82.77170)
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.