U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 5 Station ID: 8720267 PUBLICATION DATE: 01/23/2004 Name: PABLO CREEK FL NOAA Chart: 11488 Latitude: 30° 19.4' N ( 30.32330) USGS Quad: JACKSONVILLE BEACH Longitude: 81° 26.3' W ( -81.43830) To reach the tidal bench marks from the intersection of State Highway A1A and State Highway 10 (Atlantic Boulevard) in Jacksonville, proceed west on State Highway 10 1.21 km (0.75 mi) to the old highway, which is 23 m (75 ft) north of the new high rise bridge over the Intracoastal Waterway, then turn right and proceed west on the old highway for 0.6 km (0.4 mi) to the east bank of the waterway and Capt. Johnsons Fish Camp. The bench marks are located in the area around the fish camp. The tide gage and staff were located on the fish camp pier. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: 0267 D DESIGNATION: 872 0267 D TIDAL MONUMENTATION: Tidal Station disk VM#: 5152 AGENCY: National Ocean Survey (NOS) IDB PID#: BC1441 SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID: LATITUDE: 30° 19.4' N ( 30.32389) LONGITUDE: 81° 26.3' W ( -81.43833) The primary bench mark is a disk located at Capt. Johnsons Fish Camp, 82 m (270 ft) NW of the centerline of Old Atlantic Boulevard, 27 m (89 ft) west of a 16-inch Cabbage Palm, 1 m (3 ft) east of the NE corner of a metal building and 0.46 m (1.5 ft) east of a witness post. The bench mark is set O.3 m (1.0 ft) below ground level, crimped to the top of a copper-clad steel rod, driven 7.3 m (24 ft) to refusal, and encased in a PVC pipe and concrete kickblock. NOTE: A railroad tie retaining wall has been constructed on top of the mark. One-third of the disk is accessible. Mark not found in 1992 by Florida Department of Natural Resources and again in 1993 by US Power Squadron.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 5 Station ID: 8720267 PUBLICATION DATE: 01/23/2004 Name: PABLO CREEK FL NOAA Chart: 11488 Latitude: 30° 19.4' N ( 30.32330) USGS Quad: JACKSONVILLE BEACH Longitude: 81° 26.3' W ( -81.43830) T I D A L B E N C H M A R K S BENCH MARK STAMPING: W 324 1970 DESIGNATION: W 324 MONUMENTATION: Bench Mark disk VM#: 5150 AGENCY: US Coast and Geodetic Survey (USC&GS) IDB PID#: BC0485 SETTING CLASSIFICATION: Concrete walkway OPUS PID: LATITUDE: 30° 19.4' N ( 30.32330) LONGITUDE: 81° 26.1' W ( -81.43500) The bench mark is a disk set on the top of the east end of the north concrete walkway for the new high rise bridge over the Intracoastal Waterway, 4.24 m (13.9 ft) north of the centerline of the westbound lane of the highway, 3.47 m (11.4 ft) west of the east end of the walkway, and 0.15 m (0.5 ft) above the level of the bridge floor.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 5 Station ID: 8720267 PUBLICATION DATE: 01/23/2004 Name: PABLO CREEK FL NOAA Chart: 11488 Latitude: 30° 19.4' N ( 30.32330) USGS Quad: JACKSONVILLE BEACH Longitude: 81° 26.3' W ( -81.43830) T I D A L B E N C H M A R K S BENCH MARK STAMPING: X 324 DESIGNATION: X 324 MONUMENTATION: Survey disk VM#: 5153 AGENCY: Florida Department of Transportation (FLDOT) IDB PID#: BC0484 SETTING CLASSIFICATION: Bridge abutment OPUS PID: LATITUDE: 30° 19.4' N ( 30.32389) LONGITUDE: 81° 26.2' W ( -81.43722) The bench mark is a disk set in the top of the south end of the west abutment of the old 46 m (150 ft) long bridge over the creek, 7 m (23 ft) south of the centerline of the old highway, and 0.3 m (1 ft) above the level of the bridge floor.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 5 Station ID: 8720267 PUBLICATION DATE: 01/23/2004 Name: PABLO CREEK FL NOAA Chart: 11488 Latitude: 30° 19.4' N ( 30.32330) USGS Quad: JACKSONVILLE BEACH Longitude: 81° 26.3' W ( -81.43830) T I D A L D A T U M S Tidal datums at PABLO CREEK 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 = 1.255 MEAN HIGH WATER MHW = 1.193 North American Vertical Datum NAVD88 = 0.801 MEAN SEA LEVEL MSL = 0.670 MEAN TIDE LEVEL MTL = 0.619 MEAN LOW WATER MLW = 0.044 MEAN LOWER LOW WATER MLLW = 0.000 North American Vertical Datum (NAVD88) Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW 0267 D 1.562 0.369 W 324 1970 4.725 3.532 X 324 3.079 1.886
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 5 Station ID: 8720267 PUBLICATION DATE: 01/23/2004 Name: PABLO CREEK FL NOAA Chart: 11488 Latitude: 30° 19.4' N ( 30.32330) USGS Quad: JACKSONVILLE BEACH Longitude: 81° 26.3' W ( -81.43830) 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.