U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 5 Station ID: 8720833 PUBLICATION DATE: 08/05/2005 Name: SMITH CREEK, FLAGLER BEACH FLORIDA NOAA Chart: 11485 Latitude: 29° 28.7' N USGS Quad: FLAGLER BEACH WEST Longitude: 81° 8.2' W To reach the tidal bench marks from the intersection of Florida Highway AIA and State Road 100 in Flagler Beach City Limits, proceed 0.8 km (0.5 m i) SW on State Road 100 to its intersection with Lehigh Avenue, then 0.08 km (0.05 mi) to Maria's Marina on the SW side of the road. The tide gage and staff were located on the dock belonging to Maria S. Wood. The bench marks are located in the vicinity and south of Maria's Marina near the intersection of State Road 100 and Lehigh Avenue. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: 0833 A 1978 DESIGNATION: 872 0833 A TIDAL MONUMENTATION: Tidal Station disk VM#: 10754 AGENCY: National Ocean Survey (NOS) PID#: AQ1748 SETTING CLASSIFICATION: Copper-clad steel rod The primary bench mark is a disk located 13.72 m (45.0 ft) north of the dirt drive leading to Maria's Marina, 6.10 m (20.0 ft) west of the centerline of Lehigh Avenue, 1.22 m (4.0 ft) NNE of the Lehigh Avenue street sign, and 0.91 m (3.0 ft) south of a power pole with a witness sign. The bench mark is set 0.03 m (0.1 ft) below ground level, crimped to the top of a copper-clad steel rod driven 10.36 m (34.0 ft) to refusal, encased inside a PVC pipe and surrounded by concrete. BENCH MARK STAMPING: 0833 B 1978 DESIGNATION: 872 0833 B TIDAL MONUMENTATION: Tidal Station disk VM#: 10755 AGENCY: National Ocean Survey (NOS) PID#: AQ1747 SETTING CLASSIFICATION: Copper-clad steel rod The bench mark is a disk located NW of the intersection of State Road 100, 6.40 m (21.0 ft) west of the centerline of Lehigh Avenue, 6.40 m (21.0 ft) north of the centerline of a service road leading westerly to "Jims River House Restaurant," and 0.79 m (2.6 ft) north of a power pole with a witness post. The bench mark is crimped to the top of a copper-clad steel rod driven 9.75 m (32.0 ft) to refusal, encased inside a PVC pipe and surrounded by concrete.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 5 Station ID: 8720833 PUBLICATION DATE: 08/05/2005 Name: SMITH CREEK, FLAGLER BEACH FLORIDA NOAA Chart: 11485 Latitude: 29° 28.7' N USGS Quad: FLAGLER BEACH WEST Longitude: 81° 8.2' W T I D A L B E N C H M A R K S BENCH MARK STAMPING: 0833 C 1978 DESIGNATION: MONUMENTATION: Tidal Station disk VM#: 10756 AGENCY: National Ocean Survey (NOS) PID#: AQ1746 SETTING CLASSIFICATION: Concrete base The bench mark is a disk set flush in a concrete base on the eastern side of State Road 100 bridge over the Interacoastal Waterway, 83.82 m (275.0 ft) WSW of Bench Mark 0833 B 1978, 48.77 m (160.0 ft) east of the east end of State Road 100 highway bridge, 9.27 m (30.4 ft) north of the centerline of State Road 100, 1.52 m (5.0 ft) west of the east end of the bridge guardrail, 0.34 m (1.1 ft) north of the edge of the guardrail, and 0.3 m (1.0 ft) south of a witness post. BENCH MARK STAMPING: J 319 1970 DESIGNATION: J 319 MONUMENTATION: Tidal Station disk VM#: 10757 AGENCY: National Ocean Survey (NOS) PID#: AQ0888 SETTING CLASSIFICATION: Abutment of Bridge The bench mark is a disk set on the top of the north end of the east abutment of the highway bridge over the Intracoastal Waterway, 0.89 km (0.55 mi) west of the intersection of State Highway AIA and State Road 100, 6.0 m (19.7 ft) north of the centerline of State Road 100, and 0.3 m (1.0 ft) above the level of the highway.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 5 Station ID: 8720833 PUBLICATION DATE: 08/05/2005 Name: SMITH CREEK, FLAGLER BEACH FLORIDA NOAA Chart: 11485 Latitude: 29° 28.7' N USGS Quad: FLAGLER BEACH WEST Longitude: 81° 8.2' W T I D A L B E N C H M A R K S BENCH MARK STAMPING: 32 IWF 1951 DESIGNATION: 32 IWF MONUMENTATION: Tidal Station disk VM#: 10758 AGENCY: COE PID#: AQ0889 SETTING CLASSIFICATION: Concrete walkway The bench mark is a disk set on the top of the south concrete walkway near the western end of the highway bridge over the Intracoastal Waterway, 5 m (16 ft) south of the centerline of State Road 100, 4 m (13 ft) east of the west end of the concrete walkway, and 0.3 m (1.0 ft) above the level of the highway.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 5 Station ID: 8720833 PUBLICATION DATE: 08/05/2005 Name: SMITH CREEK, FLAGLER BEACH FLORIDA NOAA Chart: 11485 Latitude: 29° 28.7' N USGS Quad: FLAGLER BEACH WEST Longitude: 81° 8.2' W T I D A L D A T U M S Tidal datums at SMITH CREEK, FLAGLER BEACH based on: LENGTH OF SERIES: 3 MONTHS TIME PERIOD: January 1979 - March 1979 TIDAL EPOCH: 1983-2001 CONTROL TIDE STATION: 8721120 DAYTONA BEACH SHORES Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS: MEAN HIGHER HIGH WATER (MHHW) = 0.329 MEAN HIGH WATER (MHW) = 0.288 NORTH AMERICAN VERTICAL DATUM-1988 (NAVD) = 0.238 MEAN SEA LEVEL (MSL) = 0.160 MEAN TIDE LEVEL (MTL) = 0.154 MEAN LOW WATER (MLW) = 0.021 MEAN LOWER LOW WATER (MLLW) = 0.000 National Geodetic Vertical Datum (NGVD 29) Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW 0833 A 1978 1.570 1.282 0833 B 1978 1.796 1.508 0833 C 1978 2.943 2.655 J 319 1970 5.486 5.198 32 IWF 1951 5.501 5.213
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 5 Station ID: 8720833 PUBLICATION DATE: 08/05/2005 Name: SMITH CREEK, FLAGLER BEACH FLORIDA NOAA Chart: 11485 Latitude: 29° 28.7' N USGS Quad: FLAGLER BEACH WEST Longitude: 81° 8.2' W 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 (NAVD 88). NGVD 29 is a fixed datum adopted as a national standard geodetic reference for heights but is now considered superseded. NGVD 29 is sometimes referred to as Sea Level Datum of 1929 or as Mean Sea Level on some early issues of Geological Survey Topographic Quads. NGVD 29 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 NGVD 29 are available from the National Geodetic Survey (NGS) data base via the World Wide Web at National Geodetic Survey. NAVD 88 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. NAVD 88 replaces NGVD 29 as the national standard geodetic reference for heights. Bench mark elevations relative to NAVD 88 are available from NGS through the World Wide Web at National Geodetic Survey. NGVD 29 and NAVD 88 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 NAVD 88 elevation is shown on the Elevations of Tidal Datums Table Referred to MLLW only when two or more of the bench marks listed have NAVD 88 elevations. The NAVD 88 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, NAVD 88 bench mark elevations computed indirectly from the tidal datums elevation table may differ slightly from NAVD 88 elevations listed for each bench mark in the NGS database.