U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 6 Station ID: 8720148 PUBLICATION DATE: 02/05/2004 Name: TIGER POINT, PUMPKIN HILLS CREEK FL NOAA Chart: 11489 Latitude: 30° 30.1' N ( 30.50170) USGS Quad: AMELIA CITY Longitude: 81° 29.7' W ( -81.49500) To reach the tidal bench marks from the intersection of U.S. Highway 17 and New Berlin Road in Oceanway, proceed east along New Berlin Road 7.2 km (4.5 mi) to its intersection with Cedar Point Road, then veer left and proceed east along Cedar Point Road for 8.0 km (5.1 mi) to Pumpkin Hill Road, then turn left and proceed north on Pumpkin Hill Road for 2.1 km (1.3 mi) to the dirt road leading north, then veer left along the trail road for 0.08 km (0.05 mi) to a fork in the road, then veer right and proceed north for 1.21 km (0.75 mi) to a second fork in the road, then take the left fork and continue north for 1.4 km (0.9 mi) to a third fork, then bear right and continue for 0.3 km (0.2 mi) to the end of the trail road. The bench marks are located along the dirt road running parallel to Pumpkin Hill Creek. The tide gage and staff were located on a 1 m (4 ft) square structure in Pumpkin Hill Creek. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: 0148 A 1978 DESIGNATION: 872 0148 A MONUMENTATION: Tidal Station disk VM#: 5049 AGENCY: National Ocean Survey (NOS) IDB PID#: BC1389 SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID: LATITUDE: 30° 30.1' N ( 30.50170) LONGITUDE: 81° 29.7' W ( -81.49500) The primary bench mark is a disk located 12 m (38 ft) east of the centerline of the dirt road, 10 m (32 ft) south of a small bluff on the south side of Pumpkin Hill Creek, and 0.3 m (1.0 ft) south of a witness post. The bench mark is crimped to the top of a copper-clad steel rod driven 14.6 m (48 ft) to refusal, and encased in a PVC pipe and a concrete kickblock.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 6 Station ID: 8720148 PUBLICATION DATE: 02/05/2004 Name: TIGER POINT, PUMPKIN HILLS CREEK FL NOAA Chart: 11489 Latitude: 30° 30.1' N ( 30.50170) USGS Quad: AMELIA CITY Longitude: 81° 29.7' W ( -81.49500) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 0148 B 1978 DESIGNATION: 872 0148 B MONUMENTATION: Tidal Station disk VM#: 5050 AGENCY: National Ocean Survey (NOS) IDB PID#: BC1388 SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID: LATITUDE: 30° 30.1' N ( 30.50170) LONGITUDE: 81° 29.7' W ( -81.49500) The bench mark is a disk located 44 m (143 ft) west of bench mark 0148 A 1978, 32 m (105 ft) west of the centerline of the trail road leading south, 17 m (57 ft) south of a small bluff on the south side of Pumpkin Hill Creek, 9.30 m (30.5 ft) south of the centerline of the east-west running dirt road leading to the tide gage, and 0.3 m (1 ft) north of a witness post. The bench mark 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 and a concrete kickblock. BENCH MARK STAMPING: 0148 C 1978 DESIGNATION: 872 0148 C MONUMENTATION: Tidal Station disk VM#: 5051 AGENCY: National Ocean Survey (NOS) IDB PID#: BC1387 SETTING CLASSIFICATION: Concrete monument OPUS PID: LATITUDE: 30° 30.1' N ( 30.50170) LONGITUDE: 81° 29.7' W ( -81.49500) The bench mark is a disk set in top of a concrete monument, 0.2 km (0.1 mi) south of bench mark 0148 A 1978, 4 m (13 ft) north of a grass covered road, 4 m (12 ft) east of a dirt road, 0.3 m (1.0 ft) west of a witness post, and 0.03 m (0.1 ft) above ground level.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 6 Station ID: 8720148 PUBLICATION DATE: 02/05/2004 Name: TIGER POINT, PUMPKIN HILLS CREEK FL NOAA Chart: 11489 Latitude: 30° 30.1' N ( 30.50170) USGS Quad: AMELIA CITY Longitude: 81° 29.7' W ( -81.49500) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 0148 D 1978 DESIGNATION: 872 0148 D MONUMENTATION: Tidal Station disk VM#: 5052 AGENCY: National Ocean Survey (NOS) IDB PID#: BC1386 SETTING CLASSIFICATION: Concrete monument OPUS PID: LATITUDE: 30° 30.1' N ( 30.50170) LONGITUDE: 81° 29.7' W ( -81.49500) The bench mark is a disk set in the top of a concrete monument, 0.2 km (0.1 mi) south of bench mark 0148 C 1978, 6 m (21 ft) south of a fork in the dirt road, 3.54 m (11.6 ft) west of a dirt road, and 0.3 m (1.0 ft) NE of a witness post. BENCH MARK STAMPING: 0148 E 1978 DESIGNATION: 872 0148 E MONUMENTATION: Tidal Station disk VM#: 5053 AGENCY: National Ocean Survey (NOS) IDB PID#: BC1385 SETTING CLASSIFICATION: Concrete monument OPUS PID: LATITUDE: 30° 30.1' N ( 30.50170) LONGITUDE: 81° 29.7' W ( -81.49500) The bench mark is a disk set in top of a concrete monument, 0.3 km (0.2 mi) south of bench mark 0148 D 1978, 5 m (18 ft) west of the dirt road, and 0.3 m (1.0 ft) NE of a witness post.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 6 Station ID: 8720148 PUBLICATION DATE: 02/05/2004 Name: TIGER POINT, PUMPKIN HILLS CREEK FL NOAA Chart: 11489 Latitude: 30° 30.1' N ( 30.50170) USGS Quad: AMELIA CITY Longitude: 81° 29.7' W ( -81.49500) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 0148 F 1978 DESIGNATION: 872 0148 F MONUMENTATION: Tidal Station disk VM#: 12100 AGENCY: National Ocean Survey (NOS) IDB PID#: DI0940 SETTING CLASSIFICATION: Concrete monument OPUS PID: LATITUDE: 30° 30.0' N ( 30.50000) LONGITUDE: 81° 29.7' W ( -81.49500) The bench mark is a disk set flush in top of a concrete monument, 76 m (250 ft) south of bench mark 0148 A 1978, 55 m (179 ft) NNW of bench mark 0148 C 1978, 2 m (7 ft) west of the centerline of the dirt road, and 0.3 m (1.0 ft) west of a witness post.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 6 Station ID: 8720148 PUBLICATION DATE: 02/05/2004 Name: TIGER POINT, PUMPKIN HILLS CREEK FL NOAA Chart: 11489 Latitude: 30° 30.1' N ( 30.50170) USGS Quad: AMELIA CITY Longitude: 81° 29.7' W ( -81.49500) T I D A L D A T U M S Tidal datums at TIGER POINT, PUMPKIN HILLS CREEK based on: LENGTH OF SERIES: 3 MONTHS TIME PERIOD: January 1979 - March 1979 TIDAL EPOCH: 1983-2001 CONTROL TIDE STATION: 8720030 FERNANDINA BEACH, AMELIA RIVER Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS: MEAN HIGHER HIGH WATER MHHW = 1.633 MEAN HIGH WATER MHW = 1.546 MEAN SEA LEVEL MSL = 0.859 MEAN TIDE LEVEL MTL = 0.801 MEAN LOW WATER MLW = 0.056 MEAN LOWER LOW WATER MLLW = 0.000 North American Vertical Datum (NAVD88) Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW 0148 A 1978 2.336 0.790 0148 B 1978 2.095 0.549 0148 C 1978 2.501 0.955 0148 D 1978 2.457 0.911 0148 E 1978 3.301 1.755 0148 F 1978 2.614 1.068
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 6 of 6 Station ID: 8720148 PUBLICATION DATE: 02/05/2004 Name: TIGER POINT, PUMPKIN HILLS CREEK FL NOAA Chart: 11489 Latitude: 30° 30.1' N ( 30.50170) USGS Quad: AMELIA CITY Longitude: 81° 29.7' W ( -81.49500) 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.