U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 6 Station ID: 8720215 PUBLICATION DATE: 01/23/2004 Name: JACKSONVILLE, NAVY FUEL DEPOT FL NOAA Chart: 11491 Latitude: 30° 24.0' N ( 30.40000) USGS Quad: ARLINGTON Longitude: 81° 37.6' W ( -81.62670) To reach the tidal bench marks from the intersection of U.S. Highway 17 (Main Street) and Heckscher Drive, proceed 1.1 km (0.7 mi) east on Heckscher Drive to Sommers Road, the paved drive leading south into the Navy Fuel Depot, then follow the driveway to the large concrete fuel loading pier on the north shore of St. Johns River. The bench marks are along Heckscher Drive, Sommers Road and near the fuel pier. The tide gage and staff were located on a platform in the St. Johns River. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: NO 3 1958 DESIGNATION: 872 0215 TIDAL 3 MONUMENTATION: Tidal Station disk VM#: 5095 AGENCY: US Coast and Geodetic Survey (USC&GS) IDB PID#: BC0275 SETTING CLASSIFICATION: Concrete base for building OPUS PID: LATITUDE: 30° 24.1' N ( 30.40170) LONGITUDE: 81° 37.5' W ( -81.62500) The primary bench mark is a disk set on the top of the west end of the concrete base for the foundation of building 92, 15 m (48 ft) north of the center of a large steel gate for the entrance to Pier 2, 6 m (20 ft) north of the centerline of a black-topped street, and 0.27 m (0.9 ft) SE of the SW corner of building 92.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 6 Station ID: 8720215 PUBLICATION DATE: 01/23/2004 Name: JACKSONVILLE, NAVY FUEL DEPOT FL NOAA Chart: 11491 Latitude: 30° 24.0' N ( 30.40000) USGS Quad: ARLINGTON Longitude: 81° 37.6' W ( -81.62670) T I D A L B E N C H M A R K S BENCH MARK STAMPING: BM OIL 3 1945 DESIGNATION: OIL 3 MONUMENTATION: Survey disk VM#: 5093 AGENCY: US Army Corps of Engineers (USE) IDB PID#: BC0272 SETTING CLASSIFICATION: Concrete monument OPUS PID: LATITUDE: 30° 24.1' N ( 30.40167) LONGITUDE: 81° 37.5' W ( -81.62528) The bench mark is a disk set on the top of a concrete monument, 46 m (150 ft) NE of the north end of Pier 1, 13 m (42 ft) south of the centerline of the street, 5.06 m (16.6 ft) north of the SW corner of building 30, and 0.58 m (1.9 ft) west of the west face of building 30. BENCH MARK STAMPING: NO 2 1958 DESIGNATION: 872 0215 TIDAL 2 MONUMENTATION: Tidal Station disk VM#: 5094 AGENCY: US Coast and Geodetic Survey (USC&GS) IDB PID#: BC0274 SETTING CLASSIFICATION: Concrete head wall OPUS PID: LATITUDE: 30° 24.0' N ( 30.40003) LONGITUDE: 81° 37.5' W ( -81.62556) The bench mark is a disk set on the top of the east end of the north concrete head wall for a culvert, 50 m (165 ft) NE of the north end of Pier 1, 22 m (73 ft) north of and directly across the street from bench mark BM OIL 3 1945, 7 m (24 ft) north of the centerline of an east-west street, and 7 m (23 ft) east of the centerline of the street leading north, opposite building 30.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 6 Station ID: 8720215 PUBLICATION DATE: 01/23/2004 Name: JACKSONVILLE, NAVY FUEL DEPOT FL NOAA Chart: 11491 Latitude: 30° 24.0' N ( 30.40000) USGS Quad: ARLINGTON Longitude: 81° 37.6' W ( -81.62670) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 0215 D 1977 DESIGNATION: 872 0215 D TIDAL MONUMENTATION: Tidal Station disk VM#: 5096 AGENCY: National Ocean Survey (NOS) IDB PID#: BC1557 SETTING CLASSIFICATION: Concrete foundation OPUS PID: LATITUDE: 30° 24.0' N ( 30.40011) LONGITUDE: 81° 38.0' W ( -81.63306) The bench mark is a disk set in a concrete slab supporting the Guard House, 14 m (47 ft) NW of the front door of the Administration Building, 7.16 m (23.5 ft) east of the SW corner of the entrance gate, and 4.24 m (13.9 ft) south of the centerline of Sommers Road.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 6 Station ID: 8720215 PUBLICATION DATE: 01/23/2004 Name: JACKSONVILLE, NAVY FUEL DEPOT FL NOAA Chart: 11491 Latitude: 30° 24.0' N ( 30.40000) USGS Quad: ARLINGTON Longitude: 81° 37.6' W ( -81.62670) T I D A L B E N C H M A R K S BENCH MARK STAMPING: B 325 1970 DESIGNATION: B 325 MONUMENTATION: Bench Mark disk VM#: 5097 AGENCY: US Coast and Geodetic Survey (USC&GS) IDB PID#: BC0265 SETTING CLASSIFICATION: Concrete monument OPUS PID#: BC0265 LATITUDE: 30° 24.4' N ( 30.40694) LONGITUDE: 81° 38.4' W ( -81.63917) The bench mark is a disk set in the top of a concrete monument near the NW corner of a high steel fence around a power sub-station at the junction of Sommers Road and Hecksher Drive, 33.16 m (108.8 ft) west of the west rail of a spur track, 29 m (94 ft) south of the centerline of Heckscher Drive, 17 m (56 ft) east of the centerline of Sommers Road, 0.6 m (2 ft) west of a metal witness post, 0.6 m (1.9 ft) east of the NW corner fence post, and 0.3 m (1 ft) north of the fence line.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 6 Station ID: 8720215 PUBLICATION DATE: 01/23/2004 Name: JACKSONVILLE, NAVY FUEL DEPOT FL NOAA Chart: 11491 Latitude: 30° 24.0' N ( 30.40000) USGS Quad: ARLINGTON Longitude: 81° 37.6' W ( -81.62670) T I D A L D A T U M S Tidal datums at JACKSONVILLE, NAVY FUEL DEPOT based on: LENGTH OF SERIES: 4 MONTHS TIME PERIOD: September 1977 - December 1977 TIDAL EPOCH: 1983-2001 CONTROL TIDE STATION: 8720220 MAYPORT Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS: MEAN HIGHER HIGH WATER MHHW = 0.854 MEAN HIGH WATER MHW = 0.814 North American Vertical Datum NAVD88 = 0.518 MEAN SEA LEVEL MSL = 0.420 MEAN TIDE LEVEL MTL = 0.419 MEAN LOW WATER MLW = 0.023 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 3 1958 1.978 1.164 BM OIL 3 1945 1.791 0.977 NO 2 1958 1.780 0.966 0215 D 1977 2.547 1.733 B 325 1970 2.159 1.345
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 6 of 6 Station ID: 8720215 PUBLICATION DATE: 01/23/2004 Name: JACKSONVILLE, NAVY FUEL DEPOT FL NOAA Chart: 11491 Latitude: 30° 24.0' N ( 30.40000) USGS Quad: ARLINGTON Longitude: 81° 37.6' W ( -81.62670) 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.