U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 6 Station ID: 8720782 PUBLICATION DATE: 12/10/2004 Name: SUTHERLANDS STILL, DUNNS CREEK FL NOAA Chart: 11492 Latitude: 29° 34.3' N ( 29.57170) USGS Quad: SAN MATEO Longitude: 81° 36.4' W ( -81.60670) To reach the bench marks from the intersection of State Road 207 and US Route 17, proceed 7.92 km (4.9 mi) south on US 17 to its intersection with Horse Landing Road, then turn left and proceed SSW on Horse Landing Road for 1.6 km (1.0 mi), then turn right and proceed west on Fisherman Road for 0.89 km (0.55 mi), then turn left on to Paradise Point Road and proceed south for 0.3 km (0.2 mi) to Paradise Circle. The bench marks are in the vicinity of Horse Landing Road, Fishermans Road, and Paradise Point Road. The tide station was located on the north shore of Dunns Creek, on the SE corner of the wooden dock behind the mobile home residence of Mrs. Robert Anderson. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: 0782 A 1978 C.L.B. DESIGNATION: 872 0782 A TIDAL MONUMENTATION: Tidal Station disk VM#: 10735 AGENCY: Florida Department of Natural Resources (FLDNR) IDB PID#: AQ1754 SETTING CLASSIFICATION: Concrete monument OPUS PID: LATITUDE: 29° 34.2' N ( 29.57000) LONGITUDE: 81° 36.4' W ( -81.60670) The primary bench mark is a disk set in a concrete monument located just south of Paradise Circle, 26 m (84 ft) north of the centerline of a driveway, 19.72 m (64.7 ft) east of the NE corner of the Anderson residence, 7 m (24 ft) west of the centerline of Paradise Circle, 0.85 m (2.8 ft) east of a utility pole, 0.6 m (2 ft) east of a witness post, and 0.3 m (1 ft) below ground level.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 6 Station ID: 8720782 PUBLICATION DATE: 12/10/2004 Name: SUTHERLANDS STILL, DUNNS CREEK FL NOAA Chart: 11492 Latitude: 29° 34.3' N ( 29.57170) USGS Quad: SAN MATEO Longitude: 81° 36.4' W ( -81.60670) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 0782 B 1978 C.L.B. DESIGNATION: 872 0782 B TIDAL MONUMENTATION: Tidal Station disk VM#: 10736 AGENCY: Florida Department of Natural Resources (FLDNR) IDB PID#: AQ1753 SETTING CLASSIFICATION: Concrete monument OPUS PID: LATITUDE: 29° 34.4' N ( 29.57330) LONGITUDE: 81° 36.3' W ( -81.60500) The bench mark is a disk set in a concrete monument located by a curve on Paradise Point Road, just NE of Paradise Circle, 0.24 km (0.15 mi) south of Fishermans Road, 9 m (29 ft) SE of the centerline of Paradise Point Road, 2.07 m (6.8 ft) west of the anchor for a guy wire support, 0.91 m (3.0 ft) east of utility pole # 3-41305683-0-3, and 0.30 m (1.0 ft) north of a witness post. BENCH MARK STAMPING: 0782 C 1978 C.L.B. DESIGNATION: 872 0782 C TIDAL MONUMENTATION: Tidal Station disk VM#: 10737 AGENCY: Florida Department of Natural Resources (FLDNR) IDB PID#: AQ1752 SETTING CLASSIFICATION: Concrete monument OPUS PID: LATITUDE: 29° 34.5' N ( 29.57500) LONGITUDE: 81° 36.2' W ( -81.60330) The bench mark is a disk set in a concrete monument located at the SW corner of the intersection of Fisherman Road and Horse Landing Road, 8.99 m (29.5 ft) south of the centerline of Fishermans Road, 6.34 m (20.8 ft) west of the centerline of a private road at the end of Horse Landing Road, 1.83 m (6.0 ft) SE of power pole number 3-4130-5683-0-3, 1.65 m (5.4 ft) north of a 1 m (3 ft) tall wooden fence, 1.04 m (3.4 ft) SE of a utility pole, 0.30 m (1.0 ft) north of a witness post, and 6 cm (0.2 ft) below ground level.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 6 Station ID: 8720782 PUBLICATION DATE: 12/10/2004 Name: SUTHERLANDS STILL, DUNNS CREEK FL NOAA Chart: 11492 Latitude: 29° 34.3' N ( 29.57170) USGS Quad: SAN MATEO Longitude: 81° 36.4' W ( -81.60670) T I D A L B E N C H M A R K S BENCH MARK STAMPING: STILL 1935 DESIGNATION: STILL MONUMENTATION: Triangulation Station disk VM#: 10738 AGENCY: US Coast and Geodetic Survey (USC&GS) IDB PID#: AQ1750 SETTING CLASSIFICATION: Concrete monument OPUS PID: LATITUDE: 29° 34.4' N ( 29.57330) LONGITUDE: 81° 36.2' W ( -81.60330) The bench mark is a disk set in the top of a square concrete monument on the north bank of Dunns Creek, 0.2 km (0.1 mi) south along a private drive from bench mark 0782 C 1978 C.L.B., 30 m (97 ft) ENE of the NE corner of a swimming pool, 15 m (50 ft) NW of a 48 inch diameter oak tree, 7 m (24 ft) SE of the SW corner of the white house, 6.71 m (22.0 ft) east of an 18 inch diameter gum tree, 6 m (19 ft) SW of the SE corner of the white house, and 6 cm (0.2 ft) above ground.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 6 Station ID: 8720782 PUBLICATION DATE: 12/10/2004 Name: SUTHERLANDS STILL, DUNNS CREEK FL NOAA Chart: 11492 Latitude: 29° 34.3' N ( 29.57170) USGS Quad: SAN MATEO Longitude: 81° 36.4' W ( -81.60670) T I D A L B E N C H M A R K S BENCH MARK STAMPING: STILL NO 2 1935 DESIGNATION: STILL RM 2 MONUMENTATION: Reference Mark disk VM#: 10739 AGENCY: US Coast and Geodetic Survey (USC&GS) IDB PID#: AQ1751 SETTING CLASSIFICATION: Concrete monument OPUS PID: LATITUDE: 29° 34.4' N ( 29.57330) LONGITUDE: 81° 36.2' W ( -81.60330) The bench mark is a disk set in the top of a square concrete monument located on the east side of the driveway to a white house, near the southern end of Horse Landing Road, 17 m (57 ft) NNE of the NE corner of the white house, 5 m (15 ft) north of the north wall of the metal garage building, 3.20 m (10.5 ft) east of a brick outdoor fireplace, and 0.21 m (0.7 ft) above ground.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 6 Station ID: 8720782 PUBLICATION DATE: 12/10/2004 Name: SUTHERLANDS STILL, DUNNS CREEK FL NOAA Chart: 11492 Latitude: 29° 34.3' N ( 29.57170) USGS Quad: SAN MATEO Longitude: 81° 36.4' W ( -81.60670) T I D A L D A T U M S Tidal datums at SUTHERLANDS STILL, DUNNS CREEK based on: LENGTH OF SERIES: 5 MONTHS TIME PERIOD: November 1978 - March 1979 TIDAL EPOCH: 1983-2001 CONTROL TIDE STATION: 8720496 GREEN COVE SPRINGS, ST. JOHNS R. Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS: MEAN HIGHER HIGH WATER MHHW = 0.286 MEAN HIGH WATER MHW = 0.266 North American Vertical Datum NAVD88 = 0.150 MEAN SEA LEVEL MSL = 0.141 MEAN TIDE LEVEL MTL = 0.138 MEAN LOW WATER MLW = 0.010 MEAN LOWER LOW WATER MLLW = 0.000 North American Vertical Datum (NAVD88) Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW 0782 A 1978 C.L.B. 0.509 0.243 0782 B 1978 C.L.B. 1.407 1.141 0782 C 1978 C.L.B. 3.016 2.750 STILL 1935 2.414 2.148 STILL NO 2 1935 2.863 2.597
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 6 of 6 Station ID: 8720782 PUBLICATION DATE: 12/10/2004 Name: SUTHERLANDS STILL, DUNNS CREEK FL NOAA Chart: 11492 Latitude: 29° 34.3' N ( 29.57170) USGS Quad: SAN MATEO Longitude: 81° 36.4' W ( -81.60670) 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.