U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 5 Station ID: 8720221 PUBLICATION DATE: 01/23/2004 Name: FULTON, ST. JOHNS RIVER FL NOAA Chart: 11488 Latitude: 30° 23.4' N ( 30.39000) USGS Quad: EASTPORT Longitude: 81° 30.4' W ( -81.50670) To reach the tidal bench marks from the intersection of Monument and Fort Caroline Roads, proceed 0.8 km (0.5 mi) west of Fort Caroline Road to Fulton Road, then 0.8 km (0.5 mi) north on Fulton Road to the end of the pavement, continue 0.3 km (0.2 mi) on the dirt road to a fork in the road, then follow the east fork to the waters edge. The bench marks are on the shore and along the roads leading to the station. The tide gage and staff were 21 m (70 ft) offshore on a 1 m x 1 m (4 ft x 4 ft) support platform. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: 0221 D 1977 DESIGNATION: 872 0221 D TIDAL MONUMENTATION: Tidal Station disk VM#: 5114 AGENCY: National Ocean Survey (NOS) IDB PID#: BC1412 SETTING CLASSIFICATION: Concrete monument OPUS PID: LATITUDE: 30° 22.7' N ( 30.37833) LONGITUDE: 81° 30.6' W ( -81.51028) The primary bench mark is a disk set in the top of a concrete monument, 47 m (153 ft) north of the intersection of Fort Caroline and Fulton Roads, 5.33 m (17.5 ft) east of the centerline of Fulton Road, 4.57 m (15.0 ft) SSW of a 0.61 m (2.0 ft) diameter oak tree, 0.46 m (1.5 ft) west of a witness sign, and 0.24 m (0.8 ft) north of the north edge of the concrete drive to # 4301 Fulton Road.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 5 Station ID: 8720221 PUBLICATION DATE: 01/23/2004 Name: FULTON, ST. JOHNS RIVER FL NOAA Chart: 11488 Latitude: 30° 23.4' N ( 30.39000) USGS Quad: EASTPORT Longitude: 81° 30.4' W ( -81.50670) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 0221 E 1977 DESIGNATION: 872 0221 E TIDAL MONUMENTATION: Tidal Station disk VM#: 5115 AGENCY: National Ocean Survey (NOS) IDB PID#: BC1413 SETTING CLASSIFICATION: Concrete foundation OPUS PID: LATITUDE: 30° 22.1' N ( 30.36778) LONGITUDE: 81° 30.9' W ( -81.51528) The bench mark is a disk set in the SW corner of the base of the northernmost powerline structure, 126 m (415 ft) NE of a power pole, 24.38 m (80.0 ft) east of the centerline of Fort Caroline Road, 20.1 m (66.0 ft) NW of the SE powerline transformer, and 0.3 m (1 ft) east of a carsonite witness post. BENCH MARK STAMPING: 0221 G 1982 DESIGNATION: 872 0221 G TIDAL MONUMENTATION: Tidal Station disk VM#: 5117 AGENCY: National Ocean Survey (NOS) IDB PID#: BC2398 SETTING CLASSIFICATION: Stainless steel rod OPUS PID: LATITUDE: 30° 23.2' N ( 30.38611) LONGITUDE: 81° 30.5' W ( -81.50778) The bench mark is a disk located 0.96 km (0.6 mi) north of Fort Caroline Road, 22.71 m (74.5 ft) south of a power pole, 17.53 m (57.5 ft) north of the centerline of Martha's Vineyard Court, 8.2 m (26.9 ft) east of the centerline of Fulton Road, 1.65 m (5.4 ft) NW of the south end of a wooden fence with a stone fence post, and 0.30 m (1.0 ft) west of a witness post, and 1.0 km (0.6 mi) north of Fort Caroline Road. The bench mark is set 0.91 m (3 ft) above the road, crimped to the top of a stainless steel rod driven 9.75 m (32. ft) refusal, and 6 cm (0.2 ft) below the level of the ground.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 5 Station ID: 8720221 PUBLICATION DATE: 01/23/2004 Name: FULTON, ST. JOHNS RIVER FL NOAA Chart: 11488 Latitude: 30° 23.4' N ( 30.39000) USGS Quad: EASTPORT Longitude: 81° 30.4' W ( -81.50670) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 0221 K 1984 DESIGNATION: 872 0221 K TIDAL MONUMENTATION: Tidal Station disk VM#: 5120 AGENCY: National Ocean Service (NOS) IDB PID#: BC2397 SETTING CLASSIFICATION: Concrete monument OPUS PID: LATITUDE: 30° 23.1' N ( 30.38500) LONGITUDE: 81° 30.5' W ( -81.50833) The bench mark is a disk set in the top of a concrete monument, 0.3 km (0.25 mi) south of Bench Mark 0221 J 1984, 9.08 m (29.8 ft) SE of the centerline of Fulton Road, 14.94 m (49.0 ft) NE of the centerline of Charles Bennett Drive, 5.39 m (17.7 ft) NE of a wooden fence corner, 1.89 m (6.2 ft) SW of a 0.61 m x 0.61 m (2 ft x 2 ft) stone column, 0.4 m (1.3 ft) NW of the wooden fence, 0.37 m (1.2 ft) NW of a carsonite witness post, and 0.03 m (0.1 ft) below the level of the ground.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 5 Station ID: 8720221 PUBLICATION DATE: 01/23/2004 Name: FULTON, ST. JOHNS RIVER FL NOAA Chart: 11488 Latitude: 30° 23.4' N ( 30.39000) USGS Quad: EASTPORT Longitude: 81° 30.4' W ( -81.50670) T I D A L D A T U M S Tidal datums at FULTON, ST. JOHNS RIVER based on: LENGTH OF SERIES: 5 MONTHS TIME PERIOD: October 1977 - February 1978 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 = 1.193 MEAN HIGH WATER MHW = 1.131 North American Vertical Datum NAVD88 = 0.719 MEAN SEA LEVEL MSL = 0.588 MEAN TIDE LEVEL MTL = 0.580 MEAN LOW WATER MLW = 0.030 MEAN LOWER LOW WATER MLLW = 0.000 North American Vertical Datum (NAVD88) Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW 0221 D 1977 6.897 5.766 0221 E 1977 11.499 10.368 0221 G 1982 10.636 9.505 0221 K 1984 9.322 8.191
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 5 Station ID: 8720221 PUBLICATION DATE: 01/23/2004 Name: FULTON, ST. JOHNS RIVER FL NOAA Chart: 11488 Latitude: 30° 23.4' N ( 30.39000) USGS Quad: EASTPORT Longitude: 81° 30.4' W ( -81.50670) 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.