U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 8
Station ID: 8726607 PUBLICATION DATE: 10/13/2020
Name: PORT TAMPA, OLD TAMPA BAY
FL
NOAA Chart: 11416 Latitude: 27° 51.5' N ( 27.85778)
USGS Quad: PORT TAMPA Longitude: 82° 33.2' W ( -82.55278)
To reach the tidal bench marks from the junction of U. S. Highway 92 East (North
Dale Mabry Highway) and South West Shore Boulevard, proceed 5 km (3 mi) south on
South West Shore Boulevard which turns into Commerce Street, then 0.3 km (0.2
km) West on a road marked only with a Gold Bond Building Products plant sign to
the entrance of the plant. The tidal bench marks are located in the vicinity of
Gold Bond Building Products Plant. The tide gauge is located on the Picnic
Island Fishing Pier next to the parking lot of the plant.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 6607 A 1991
DESIGNATION: 872 6607 A
MONUMENTATION: Tidal Station disk VM#: 14019
AGENCY: National Ocean Service (NOS) IDB PID#: DQ1034
SETTING CLASSIFICATION: Concrete bulkhead OPUS PID#: DQ1034
LATITUDE: 27° 51.5' N ( 27.85797) LONGITUDE: 82° 33.1' W ( -82.55206)
The primary bench mark is a disk set in the NW corner of the conrete bulkhead on
the north side of the boat ramp, 36.30 m (119.1 ft) west of the east end of the
bulkhead, 9.1 m (29.9 ft) SW of the center one of five palm trees, and 5.91 m
(19.4 ft) SSW of the north end of the bulkhead.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 8
Station ID: 8726607 PUBLICATION DATE: 10/13/2020
Name: PORT TAMPA, OLD TAMPA BAY
FL
NOAA Chart: 11416 Latitude: 27° 51.5' N ( 27.85778)
USGS Quad: PORT TAMPA Longitude: 82° 33.2' W ( -82.55278)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: TH-149 JAX FL 2002
DESIGNATION: TH 149
ALIAS: TH 149
MONUMENTATION: Survey disk VM#: 19613
AGENCY: US Army Corp of Engineers (USACE) IDB PID:
SETTING CLASSIFICATION: Boat ramp OPUS PID#: BBFN94
LATITUDE: 27° 51.5' N ( 27.85789) LONGITUDE: 82° 33.1' W ( -82.55172)
The bench mark is a disk set on the northside of the boat ramp in the west
corner located at Picnic Island park, 38.55 m (126.5 ft) east of a light pole
marked 1-22177-38135-A, 36.27 m (119.0 ft) NW of the westernmost corner of the
sea wall on the northern side of the boat ramp, 7.68 m (25.2 ft) NNE of the
centerline of the boat ramp.
BENCH MARK STAMPING: 6607 F 2011
DESIGNATION: 872 6607 F
MONUMENTATION: Survey disk VM#: 19863
AGENCY: National Ocean Service (NOS) IDB PID:
SETTING CLASSIFICATION: Concrete pier OPUS PID#: BBFN93
LATITUDE: 27° 51.5' N ( 27.85775) LONGITUDE: 82° 33.2' W ( -82.55269)
The bench mark is a disk set flush in the concrete pier near the southeast
corner of the pier, 12.00 m (39.4 ft) south of the northeast corner of the pier,
6.70 m (22.0 ft) east of the southwest corner of the pier, and 2.65 m (8.7 ft)
north of the southeast corner of the pier.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 8
Station ID: 8726607 PUBLICATION DATE: 10/13/2020
Name: PORT TAMPA, OLD TAMPA BAY
FL
NOAA Chart: 11416 Latitude: 27° 51.5' N ( 27.85778)
USGS Quad: PORT TAMPA Longitude: 82° 33.2' W ( -82.55278)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 6607 G 2011
DESIGNATION: 872 6607 G
MONUMENTATION: Flange-encased Rod VM#: 19864
AGENCY: National Ocean Service (NOS) IDB PID:
SETTING CLASSIFICATION: Stainless steel rod in sleeve OPUS PID:
LATITUDE: 27° 51.5' N ( 27.85794) LONGITUDE: 82° 33.1' W ( -82.55125)
The bench mark is a deep rod set in the median strip between the two parking
lots of the park, driven rod driven 31.70 m (104.0 ft) to refusal, with a 5 inch
(13 cm) pvc pipe and log cap with a concrete kick block flush with the ground,
16.90 m southeast of a concrete light pole, 16.75 m (55.0 ft) north of the south
side of the parking lot, 16.65 m (54.6 ft) west of the center of a concrete
drain.
BENCH MARK STAMPING: 6607 H 2011
DESIGNATION: 872 6607 H
MONUMENTATION: Flange-encased Rod VM#: 20296
AGENCY: National Ocean Service (NOS) IDB PID:
SETTING CLASSIFICATION: Stainless steel rod in sleeve OPUS PID#: BBFN92
LATITUDE: 27° 51.4' N ( 27.85747) LONGITUDE: 82° 33.1' W ( -82.55097)
The bench mark is 83.21 m (273.0 ft) W of the western most post for main
entrance gate to Picnic Island Beach, 57.91 m (190.0 ft) E of the gate for a
chainlink fence for beacg access from the park, 14.80 m (48.60 ft) SSW of a
witness post, and is the high point of a survey disk crimped to a stainless
steel rod.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 8
Station ID: 8726607 PUBLICATION DATE: 10/13/2020
Name: PORT TAMPA, OLD TAMPA BAY
FL
NOAA Chart: 11416 Latitude: 27° 51.5' N ( 27.85778)
USGS Quad: PORT TAMPA Longitude: 82° 33.2' W ( -82.55278)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 6607 J 2011
DESIGNATION: 872 6607 J
MONUMENTATION: Tidal Station disk VM#: 20297
AGENCY: National Ocean Service (NOS) IDB PID:
SETTING CLASSIFICATION: In concrete OPUS PID:
LATITUDE: 27° 51.5' N ( 27.85794) LONGITUDE: 82° 33.0' W ( -82.55017)
The bench mark is 28.50 m (93.50 ft) SW of the Picnic Island Park sign, 17.86 m
(58.6 ft) W of the centerline of Picnic Island Blvd, 3.30 m(10.80 ft) SE of the
NW corner of a bathroom building, and is the high point of a survey disk.
BENCH MARK STAMPING: 6607 N 2017
DESIGNATION: 872 6607 N
MONUMENTATION: Flange-encased Rod VM#: 22311
AGENCY: National Ocean Service IDB PID:
SETTING CLASSIFICATION: Stainless steel rod in sleeve OPUS PID:
LATITUDE: 27° 51.4' N ( 27.85733) LONGITUDE: 82° 33.0' W ( -82.55017)
The bench mark is a stainless steel rod driven to refusal located 38.29m (125.6
ft) South of the boat ramp exit stop sign, 14.6m (47.9 ft) West of the
centerline of Picnic Island Boulevard, 10.5m (34.3 ft) SW of the SW corner of a
concrete pad which serves as a frisbee golf tee box for hole number 11, and
10.24m (33.6 ft) East of a witness post set on edge of wood line.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 8
Station ID: 8726607 PUBLICATION DATE: 10/13/2020
Name: PORT TAMPA, OLD TAMPA BAY
FL
NOAA Chart: 11416 Latitude: 27° 51.5' N ( 27.85778)
USGS Quad: PORT TAMPA Longitude: 82° 33.2' W ( -82.55278)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 6607 M 2017
DESIGNATION: 872 6607 M
MONUMENTATION: Flange-encased Rod VM#: 22312
AGENCY: National Ocean Service IDB PID:
SETTING CLASSIFICATION: OPUS PID:
LATITUDE: 27° 51.5' N ( 27.85856) LONGITUDE: 82° 32.9' W ( -82.54753)
The bench mark is a stainless steel deep rod driven 12.3m to refusal, 84.85 m
(278.4 ft) east of electric pole # 029969, 14.38 m (47.2 ft) south of electric
pole # 029968, 2.20 m (7.2 ft) north of witness post.
BENCH MARK STAMPING: 6607 K 2017
DESIGNATION: 872 6607 K
MONUMENTATION: Flange-encased Rod VM#: 22313
AGENCY: National Ocean Service IDB PID:
SETTING CLASSIFICATION: OPUS PID#: BBGJ85
LATITUDE: 27° 51.6' N ( 27.86003) LONGITUDE: 82° 32.8' W ( -82.54642)
The bench mark is a stainless steel rod driven 20.3m to refusal, 11.53 m (37.8
ft) east of center line of Picnic Island Blvd., 10.03 m (32.9 ft) north of north
rail of railroad track, and 5.79 m (19.0 ft) west of witness post.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 8
Station ID: 8726607 PUBLICATION DATE: 10/13/2020
Name: PORT TAMPA, OLD TAMPA BAY
FL
NOAA Chart: 11416 Latitude: 27° 51.5' N ( 27.85778)
USGS Quad: PORT TAMPA Longitude: 82° 33.2' W ( -82.55278)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 6607 P 2017
DESIGNATION: 872 6607 P
MONUMENTATION: Bench Mark disk VM#: 22314
AGENCY: National Ocean Service IDB PID:
SETTING CLASSIFICATION: OPUS PID:
LATITUDE: 27° 51.7' N ( 27.86092) LONGITUDE: 82° 32.8' W ( -82.54661)
The bench mark is a disk set in concrete pad, 16.65 m (54.6 ft) south of center
line of Commerce Street, 5.72 m (18.8 ft) east of center line of Picnic Island
Blvd., 1.13 m (3.7 ft) NW of the west I-beam supporting gas line at the
intersection of commerce St and Picnic Island Boulevard.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 7 of 8
Station ID: 8726607 PUBLICATION DATE: 10/13/2020
Name: PORT TAMPA, OLD TAMPA BAY
FL
NOAA Chart: 11416 Latitude: 27° 51.5' N ( 27.85778)
USGS Quad: PORT TAMPA Longitude: 82° 33.2' W ( -82.55278)
T I D A L D A T U M S
Tidal datums at PORT TAMPA, OLD TAMPA BAY based on:
LENGTH OF SERIES: 12 YEARS
TIME PERIOD: '99-'00, '03, 12/05-11/08, 4/10-03/11, '12-'16
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:
HIGHEST OBSERVED WATER LEVEL (10/08/1996) = 1.849
MEAN HIGHER HIGH WATER MHHW = 0.755
MEAN HIGH WATER MHW = 0.659
North American Vertical Datum NAVD88 = 0.516
MEAN TIDE LEVEL MTL = 0.397
MEAN SEA LEVEL MSL = 0.395
MEAN LOW WATER MLW = 0.134
MEAN LOWER LOW WATER MLLW = 0.000
LOWEST OBSERVED WATER LEVEL (12/15/2004) = -0.692
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
6607 A 1991 1.383 0.724
TH-149 JAX FL 2002 1.370 0.711
6607 F 2011 2.476 1.817
6607 G 2011 2.088 1.429
6607 H 2011 2.309 1.650
6607 J 2011 2.413 1.754
6607 N 2017 2.528 1.869
6607 M 2017 1.642 0.983
6607 K 2017 1.834 1.175
6607 P 2017 2.356 1.697
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 8 of 8
Station ID: 8726607 PUBLICATION DATE: 10/13/2020
Name: PORT TAMPA, OLD TAMPA BAY
FL
NOAA Chart: 11416 Latitude: 27° 51.5' N ( 27.85778)
USGS Quad: PORT TAMPA Longitude: 82° 33.2' W ( -82.55278)
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.