U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 6 Station ID: 8726539 PUBLICATION DATE: 03/16/2011 Name: NEWMAN BRANCH FL NOAA Chart: 11413 Latitude: 27° 47.0' N ( 27.78330) USGS Quad: GIBSONTON Longitude: 82° 24.4' W ( -82.40670) To reach the tidal bench marks from the intersection of U.S. Highway 41 (South Tamiami Trail) and Apollo Beach Boulevard, proceed 1.1 km (0.7 mi) west on Apollo Beach Boulevard to Dickman Road, then turn right and proceed north on Dickman Road for 0.8 km (0.5 mi) to Newman Branch Creek. The bench marks are in the vicinity of Dickman Road and Newman Branch Creek. The tide gage and staff were on the end of a small pier west of Dickman Road bridge over Newman Branch Creek. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: 6539 A 1977 DESIGNATION: 872 6539 A TIDAL MONUMENTATION: Tidal Station disk VM#: 6552 AGENCY: National Ocean Survey (NOS) IDB PID#: AG7597 SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID: LATITUDE: 27° 46.9' N ( 27.78170) LONGITUDE: 82° 24.1' W ( -82.40170) The primary bench mark is a disk located west of Dickman Road along the north bank of Newman Branch creek, 70 m (230 ft) west of the NW corner of the bridge over the creek, and 0.24 m (0.8 ft) south of a witness post. The bench mark disk is crimped to the top of a copper-clad steel rod driven 12.2 m (40 ft) to refusal, and encased in a PVC pipe projecting 6 cm (0.2 ft) with concrete kickblock.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 6 Station ID: 8726539 PUBLICATION DATE: 03/16/2011 Name: NEWMAN BRANCH FL NOAA Chart: 11413 Latitude: 27° 47.0' N ( 27.78330) USGS Quad: GIBSONTON Longitude: 82° 24.4' W ( -82.40670) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 6539 B 1977 DESIGNATION: 872 6539 B TIDAL MONUMENTATION: Tidal Station disk VM#: 6553 AGENCY: National Ocean Survey (NOS) IDB PID#: AG7596 SETTING CLASSIFICATION: Concrete bridge abutment OPUS PID: LATITUDE: 27° 46.9' N ( 27.78170) LONGITUDE: 82° 24.0' W ( -82.40000) The bench mark is a disk set in the bridge abutment at the NW corner of the bridge over Newman Branch Creek, 70 m (230 ft) east of bench mark 6539 A 1977, 18.59 m (61.0 ft) north of the south end of the bridge, 6.40 m (21.0 ft) west of the centerline of Dickman Road, and 0.30 m (1 ft) below the level of the road. BENCH MARK STAMPING: 6539 C 1977 DESIGNATION: 872 6539 C TIDAL MONUMENTATION: Tidal Station disk VM#: 6554 AGENCY: National Ocean Survey (NOS) IDB PID#: AG7598 SETTING CLASSIFICATION: Concrete bridge abutment OPUS PID: LATITUDE: 27° 46.9' N ( 27.78170) LONGITUDE: 82° 24.0' W ( -82.40000) The bench mark is a disk set in the bridge abutment at the SE corner of the bridge over Newman Branch Creek, 22.86 m (75.0 ft) SE of bench mark 6539 B 1977, 6.10 m (20.0 ft) east of the centerline of Dickman Road, 0.67 m (2.2 ft) east of the SE corner of the bridge, and 0.30 m (1 ft) below the level of the road.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 6 Station ID: 8726539 PUBLICATION DATE: 03/16/2011 Name: NEWMAN BRANCH FL NOAA Chart: 11413 Latitude: 27° 47.0' N ( 27.78330) USGS Quad: GIBSONTON Longitude: 82° 24.4' W ( -82.40670) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 6539 E 1977 DESIGNATION: 872 6539 E TIDAL MONUMENTATION: Tidal Station disk VM#: 6555 AGENCY: National Ocean Survey (NOS) IDB PID#: AG7599 SETTING CLASSIFICATION: Concrete bridge abutment OPUS PID#: AG7599 LATITUDE: 27° 46.7' N ( 27.77830) LONGITUDE: 82° 24.0' W ( -82.40000) The bench mark is a disk set in the bridge abutment at the NW corner of a small bridge over a canal, 0.5 km (0.3 mi) south of Newman Branch Creek, 18.59 m (61.0 ft) north of south end of the bridge over the canal, 6.10 m (20.0 ft) west of the centerline of Dickman Road, 0.61 m (2.0 ft) west of the NW corner of bridge, and 0.30 m (1 ft) below the level of the road. BENCH MARK STAMPING: 6539 F 1977 DESIGNATION: 872 6539 F TIDAL MONUMENTATION: Tidal Station disk VM#: 6556 AGENCY: National Ocean Survey (NOS) IDB PID#: AG7600 SETTING CLASSIFICATION: Concrete bridge abutment OPUS PID#: AG7600 LATITUDE: 27° 46.7' N ( 27.77830) LONGITUDE: 82° 24.0' W ( -82.40000) The bench mark is a disk set in the bridge abutment of the SE corner of a small bridge over a canal, 0.5 km (0.3 mi) south of Newman Branch Creek, 22.86 m (75.0 ft) SE of bench mark 6539 E 1977, 6.10 m (20.0 ft) east of the centerline of Dickman Road, 0.67 m (2.2 ft) east of the SE corner of the bridge, and 0.30 m (1 ft) below the level of the road.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 6 Station ID: 8726539 PUBLICATION DATE: 03/16/2011 Name: NEWMAN BRANCH FL NOAA Chart: 11413 Latitude: 27° 47.0' N ( 27.78330) USGS Quad: GIBSONTON Longitude: 82° 24.4' W ( -82.40670) T I D A L B E N C H M A R K S BENCH MARK STAMPING: V 694 2007 DESIGNATION: V 694 MONUMENTATION: Bench Mark disk VM#: 19845 AGENCY: Florida Dept. of Environmental Protection (FLDEP) IDB PID#: DL1725 SETTING CLASSIFICATION: Round concrete monument OPUS PID: LATITUDE: 27° 46.5' N ( 27.77458) LONGITUDE: 82° 24.1' W ( -82.40097) The bench mark is a disk set in the top of a round concrete monument flush with the ground and level with Dickman Road, located 24.78 m (81.3 ft) north of the centerline of Apollo Beach Boulevard westbound lanes, 22.62 m (74.2 ft) south of the approximate centerline of the SE entrance to the Apollo Beach Elementary School, 14.78 m (48.5 ft) west of the centerline of Dickman Road, 3.57 m (11.7 ft) south of a square concrete power pole #131798 (27027, 35082) with 7 guy wires and one light attached, 0.67 m (2.2 ft) west of a carsonite witness post, and 0.18 m (0.6 ft) east of the east side of the side walk. NOTE: A magnet was imbedded in the ground on the east side of the monument.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 6 Station ID: 8726539 PUBLICATION DATE: 03/16/2011 Name: NEWMAN BRANCH FL NOAA Chart: 11413 Latitude: 27° 47.0' N ( 27.78330) USGS Quad: GIBSONTON Longitude: 82° 24.4' W ( -82.40670) T I D A L D A T U M S Tidal datums at NEWMAN BRANCH based on: LENGTH OF SERIES: 6 MONTHS TIME PERIOD: April 1977 - September 1977 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 = 0.795 MEAN HIGH WATER MHW = 0.704 North American Vertical Datum NAVD88 = 0.509 MEAN SEA LEVEL MSL = 0.426 MEAN TIDE LEVEL MTL = 0.416 MEAN LOW WATER MLW = 0.129 MEAN LOWER LOW WATER MLLW = 0.000 North American Vertical Datum (NAVD88) Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW 6539 A 1977 0.932 0.228 6539 B 1977 3.005 2.301 6539 C 1977 3.010 2.306 6539 E 1977 3.013 2.309 6539 F 1977 3.033 2.329 V 694 2007 2.270 1.566 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 mark V 694 2007 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 6 of 6 Station ID: 8726539 PUBLICATION DATE: 03/16/2011 Name: NEWMAN BRANCH FL NOAA Chart: 11413 Latitude: 27° 47.0' N ( 27.78330) USGS Quad: GIBSONTON Longitude: 82° 24.4' W ( -82.40670) 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.