U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 5 Station ID: 8723741 PUBLICATION DATE: 01/11/2005 Name: TAVERNIER (INSIDE), FLORIDA BAY FL NOAA Chart: 11463 Latitude: 25° 0.9' N ( 25.01500) USGS Quad: TAVERNIER (1971) Longitude: 80° 30.9' W ( -80.51500) To reach the tidal bench marks from the post office and U.S. Highway 1 in Tavernier, proceed NW for 0.24 km (0.15 mi) on Harbor View Drive to the end of the road. The bench marks are located in the motel complex on both sides of the road. The tide gage and staff were located on Key Haven Motel pier, just south of Harbor View Drive. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: X 327 1970 DESIGNATION: 872 3741 X 327 MONUMENTATION: Tidal Station disk VM#: 5990 AGENCY: US Coast and Geodetic Survey (USC&GS) IDB PID#: AC0453 SETTING CLASSIFICATION: Rock outcrop OPUS PID: LATITUDE: 25° 0.7' N ( 25.01170) LONGITUDE: 80° 31.1' W ( -80.51830) The primary bench mark is a disk set in the top of a rock outcrop in the front lawn of a house, 25 m (83 ft) NE of the centerline of Harbor View Drive, 15.48 m (50.8 ft) west of the NW corner of a house, 9 m (29 ft) SE of the SE edge of the shoreline, and about level with Harbor View Drive.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 5 Station ID: 8723741 PUBLICATION DATE: 01/11/2005 Name: TAVERNIER (INSIDE), FLORIDA BAY FL NOAA Chart: 11463 Latitude: 25° 0.9' N ( 25.01500) USGS Quad: TAVERNIER (1971) Longitude: 80° 30.9' W ( -80.51500) T I D A L B E N C H M A R K S BENCH MARK STAMPING: W 327 1970 DESIGNATION: 872 3741 W 327 MONUMENTATION: Tidal Station disk VM#: 5989 AGENCY: US Coast and Geodetic Survey (USC&GS) IDB PID#: AC0452 SETTING CLASSIFICATION: Rock outcrop OPUS PID: LATITUDE: 25° 0.8' N ( 25.01330) LONGITUDE: 80° 31.0' W ( -80.51670) The bench mark is a disk set in the top of a rock outcrop in the front lawn of a house, 19 m (63 ft) NE of the centerline of Harbor View Drive, 13 m (43 ft) west of the NW corner of a house, 11 m (37 ft) north of the SW corner of a house, 9 m (29 ft) south of bench mark X 327 1970, 1 m (3 ft) east of a metal pole, and about level with Harbor View Drive. BENCH MARK STAMPING: Y 327 1970 DESIGNATION: 872 3741 Y 327 MONUMENTATION: Tidal Station disk VM#: 5991 AGENCY: US Coast and Geodetic Survey (USC&GS) IDB PID#: AC0450 SETTING CLASSIFICATION: Rock outcrop OPUS PID: LATITUDE: 25° 0.7' N ( 25.01170) LONGITUDE: 80° 31.1' W ( -80.51830) The bench mark is a disk set in the top of a rock outcrop in the front yard of the Key Haven Motel, 21.61 m (70.9 ft) SE of the SE end of the boat dock, 12 m (40 ft) SW of the centerline of Harbor View Drive, 6 m (20 ft) NW of the NW corner of the main building of the Key Haven Motel, and about 0.30 m (1.0 ft) below Harbor View Drive.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 5 Station ID: 8723741 PUBLICATION DATE: 01/11/2005 Name: TAVERNIER (INSIDE), FLORIDA BAY FL NOAA Chart: 11463 Latitude: 25° 0.9' N ( 25.01500) USGS Quad: TAVERNIER (1971) Longitude: 80° 30.9' W ( -80.51500) T I D A L B E N C H M A R K S BENCH MARK STAMPING: Z 327 1970 DESIGNATION: 872 3741 Z 327 MONUMENTATION: Tidal Station disk VM#: 5992 AGENCY: US Coast and Geodetic Survey (USC&GS) IDB PID#: AC0449 SETTING CLASSIFICATION: Septic tank foundation OPUS PID: LATITUDE: 25° 0.7' N ( 25.01170) LONGITUDE: 80° 31.1' W ( -80.51830) The bench mark is a disk set in the top of the SW corner of a septic tank, 48 m (159 ft) SW of the centerline of Harbor View Drive, 41.73 m (136.9 ft) SE of the SE side of the seawall, and about level with Harbor View Drive. BENCH MARK STAMPING: A 328 1970 DESIGNATION: 872 3741 A 328 MONUMENTATION: Tidal Station disk VM#: 5993 AGENCY: US Coast and Geodetic Survey (USC&GS) IDB PID#: AC0448 SETTING CLASSIFICATION: Rock outcrop OPUS PID: LATITUDE: 25° 0.8' N ( 25.01330) LONGITUDE: 80° 31.0' W ( -80.51670) The bench mark is a disk set in the top of a rock outcrop in the front lawn of the Key Haven Motel, 37 m (120 ft) SW of the centerline of Harbor View Drive, 14.45 m (47.4 ft) NW of the NE corner of a metal shed, 14 m (46 ft) SE of a seawall, and about level with Harbor View Drive.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 5 Station ID: 8723741 PUBLICATION DATE: 01/11/2005 Name: TAVERNIER (INSIDE), FLORIDA BAY FL NOAA Chart: 11463 Latitude: 25° 0.9' N ( 25.01500) USGS Quad: TAVERNIER (1971) Longitude: 80° 30.9' W ( -80.51500) T I D A L D A T U M S Tidal datums at TAVERNIER (INSIDE), FLORIDA BAY based on: LENGTH OF SERIES: 1 YEAR TIME PERIOD: December 1970 - November 1971 TIDAL EPOCH: 1983-2001 CONTROL TIDE STATION: 8724580 KEY WEST Elevations of tidal datums referred to Mean Sea Level (MSL), in METERS: HIGHEST OBSERVED WATER LEVEL (10/22/1971) = 0.302 North American Vertical Datum NAVD88 = 0.232 MEAN SEA LEVEL MSL = 0.000 LOWEST OBSERVED WATER LEVEL (04/13/1971) = -0.315 North American Vertical Datum (NAVD88) Bench Mark Elevation Information In METERS above: Stamping or Designation MSL X 327 1970 0.367 W 327 1970 0.637 Y 327 1970 0.345 Z 327 1970 0.884 A 328 1970 0.363
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 5 Station ID: 8723741 PUBLICATION DATE: 01/11/2005 Name: TAVERNIER (INSIDE), FLORIDA BAY FL NOAA Chart: 11463 Latitude: 25° 0.9' N ( 25.01500) USGS Quad: TAVERNIER (1971) Longitude: 80° 30.9' W ( -80.51500) 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.