U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 7 Station ID: 8726243 PUBLICATION DATE: 05/12/2011 Name: ANNA MARIA OUTSIDE FL NOAA Chart: 11424 Latitude: 27° 29.8' N ( 27.49670) USGS Quad: BRADENTON BEACH Longitude: 82° 42.8' W ( -82.71330) To reach the mark from the intersection of State Highway 64 westbound lanes (Manatee Avenue) and U.S. Business Highway 41 (9th Street, Tamiami Trail) in Bradenton, go west on State Highway 64 (Manatee Avenue) for 13.7 km (8.5 mi) and crossing three bridges to Anna Maria Island and the second traffic signal at the junction of Gulf Drive and the vicinity of the tidal marks. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: NO 2 1975 DESIGNATION: 872 6243 TIDAL 2 MONUMENTATION: Bench Mark disk VM#: 10610 AGENCY: National Ocean Survey (NOS) IDB PID#: AG6395 SETTING CLASSIFICATION: Curb apron OPUS PID: LATITUDE: 27° 29.8' N ( 27.49670) LONGITUDE: 82° 42.6' W ( -82.71000) The primary bench mark is a disk set flush in the top of a concrete curb apron near the NW corner of the building and 0.30 m (1.0 ft) above the level of the entrance drive, 27.3 m (89.7 ft) NE of a concrete post with bench mark 82, 14.48 m (47.5 ft) west of the approximate centerline of the asphalt entrance drive, 9.0 m (29.5 ft) west of bench mark NO 3 1975, 2.5 m (8.2 ft) east of the west edge of the concrete walkway on the west side of the building, 1.7 m (5.5 ft) south of the north end of the rectangular curb apron, and 1.2 m (4.0 ft) north of the NW corner of the building.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 7 Station ID: 8726243 PUBLICATION DATE: 05/12/2011 Name: ANNA MARIA OUTSIDE FL NOAA Chart: 11424 Latitude: 27° 29.8' N ( 27.49670) USGS Quad: BRADENTON BEACH Longitude: 82° 42.8' W ( -82.71330) T I D A L B E N C H M A R K S BENCH MARK STAMPING: NO 3 1975 DESIGNATION: 872 6243 TIDAL 3 MONUMENTATION: Bench Mark disk VM#: 10611 AGENCY: National Ocean Survey (NOS) IDB PID#: AG6394 SETTING CLASSIFICATION: Curb apron OPUS PID: LATITUDE: 27° 29.8' N ( 27.49670) LONGITUDE: 82° 42.6' W ( -82.71000) The bench mark is a disk set flush in the top of the curb apron on the west side of the entrance drive and 0.30 m (1.0 ft) above the drive surface, about 46.0 m (151.0 ft) SW of bench mark NO 5 1975, 8.99 m (29.5 ft) east of bench mark NO 2 1975, 5.5 m (18.0 ft) west of the centerline of the entrance drive, and 2.7 m (8.7 ft) NE of the NE corner of the building. BENCH MARK STAMPING: NO 5 1975 DESIGNATION: 872 6243 TIDAL 5 MONUMENTATION: Bench Mark disk VM#: 10612 AGENCY: National Ocean Survey (NOS) IDB PID#: AG6393 SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID: LATITUDE: 27° 29.9' N ( 27.49830) LONGITUDE: 82° 42.6' W ( -82.71000) The bench mark is a disk located about 46.0 m (151.0 ft) NE of bench mark NO 3 1975, about 45.1 m (148.00 ft) east of the approximate centerline of the asphalt entrance drive, about 41.8 m (137.0 ft) south of the centerline of Gulf Drive on the north end of the park, 10.1 m (33.0 ft) north of the approximate centerline of the driveway of the dirt parking area, 0.6 m (2.0 ft) SW of the SE corner of the chain link fence, and 0.4 m (1.2 ft) south of a carsonite witness post. The bench mark is crimped to the top of a copper-clad steel rod encased in a 4-inch (10 cm) steel pipe and surrounded with concrete at the SE corner of the chain link fence.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 7 Station ID: 8726243 PUBLICATION DATE: 05/12/2011 Name: ANNA MARIA OUTSIDE FL NOAA Chart: 11424 Latitude: 27° 29.8' N ( 27.49670) USGS Quad: BRADENTON BEACH Longitude: 82° 42.8' W ( -82.71330) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 82 DESIGNATION: 82 MONUMENTATION: Survey disk VM#: 10613 AGENCY: Manatee County (FL-081) IDB PID#: AG6396 SETTING CLASSIFICATION: Prefabricated concrete post OPUS PID: LATITUDE: 27° 29.8' N ( 27.49670) LONGITUDE: 82° 42.6' W ( -82.71000) The bench mark is a disk set in the top of a prefabricated concrete post projecting 0.2 m (0.6 ft) above the level of the ground, 27.3 M (89.7 ft) SW of bench mark NO 2 1975, 14.5 m (47.5 ft) west of the west edge of the building, 12.7 m (41.8 ft) east of the SE pole supporting the life guard shack, 6.3 m (20.6 ft) west of the center of a cluster of sea grape trees, 5.9 m (19.5 ft) NW of the NW corner of the wall around the outside dining area, and 0.2 m (0.6 ft) south of a 0.1 m (0.4 ft) square wooden post. BENCH MARK STAMPING: 6243 A 2008 DESIGNATION: 872 6243 A TIDAL MONUMENTATION: Flange-encased Rod VM#: 19958 AGENCY: Florida Department of Transportation (FLDT) IDB PID#: DL1836 SETTING CLASSIFICATION: Stainless steel rod OPUS PID: LATITUDE: 27° 29.8' N ( 27.49689) LONGITUDE: 82° 42.6' W ( -82.71078) The bench mark is a disk located about 46.0 m (151.0 ft) NE of bench mark NO 3 1975, about 45.1 m (148.00 ft) east of the approximate centerline of the asphalt entrance drive, about 41.8 m (137.0 ft) south of the centerline of Gulf Drive on the north end of the park, 10.1 m (33.0 ft) north of the approximate centerline of the driveway of the dirt parking area, 0.6 m (2.0 ft) SW of the SE corner of the 'chain link fence, and 0.4 m (1.2 ft) south of a carsonite witness post. The bench mark is crimped to the top of a copper-clad steel rod encased in a 4-inch (10 cm) steel pipe and surrounded with concrete at the SE corner of the chain link fence.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 7 Station ID: 8726243 PUBLICATION DATE: 05/12/2011 Name: ANNA MARIA OUTSIDE FL NOAA Chart: 11424 Latitude: 27° 29.8' N ( 27.49670) USGS Quad: BRADENTON BEACH Longitude: 82° 42.8' W ( -82.71330) T I D A L B E N C H M A R K S BENCH MARK STAMPING: S 689 DESIGNATION: S 689 MONUMENTATION: Survey disk VM#: 19959 AGENCY: Florida Department of Transportation (FLDT) IDB PID#: DL1857 SETTING CLASSIFICATION: Concrete bridge wing-wall OPUS PID: LATITUDE: 27° 29.8' N ( 27.49606) LONGITUDE: 82° 41.4' W ( -82.69019) The bench mark is a disk set flush in the top of the wing-wall, outside of the concrete guard rail at the SW corner of the bridge and level with State Highway 64 (Manatee Avenue), 6.0 m (19.8 ft)south of the centerline of State Highway 64 (Manatee Avenue), 6.0 m (19.7 ft) west of the east end of the concrete bridge guardrail, 1.1 m (3.5 ft) north of the approximate top center of a blue 16-inch (41 cm) water main pipe and 0.5 m (1.6 ft) north of a carsonite witness post.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 7 Station ID: 8726243 PUBLICATION DATE: 05/12/2011 Name: ANNA MARIA OUTSIDE FL NOAA Chart: 11424 Latitude: 27° 29.8' N ( 27.49670) USGS Quad: BRADENTON BEACH Longitude: 82° 42.8' W ( -82.71330) T I D A L B E N C H M A R K S BENCH MARK STAMPING: GIS 103 DESIGNATION: GIS 103 MONUMENTATION: Flange-encased Rod VM#: 19960 AGENCY: Manatee County Florida IDB PID#: AG9208 SETTING CLASSIFICATION: Aluminum rod OPUS PID: LATITUDE: 27° 29.8' N ( 27.49672) LONGITUDE: 82° 42.4' W ( -82.70742) The bench mark is a disk is set on one three foot section of Berntsen rod attached to six sections of Berntsen rod hammered to refusal, 0.30 m (1.0 foot) below ground level, 0.61 m (2 feet) west of the back of median curb which lies SW of the intersection, 10.45 m (34.3 ft) south of the center of Manatee Avenue, and 5.88 m (19.3 ft) west of the center of East Bay Drive. A carsonite witness post was set 2.44 m (8.0 ft) SW of the station.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 6 of 7 Station ID: 8726243 PUBLICATION DATE: 05/12/2011 Name: ANNA MARIA OUTSIDE FL NOAA Chart: 11424 Latitude: 27° 29.8' N ( 27.49670) USGS Quad: BRADENTON BEACH Longitude: 82° 42.8' W ( -82.71330) T I D A L D A T U M S Tidal datums at ANNA MARIA OUTSIDE based on: LENGTH OF SERIES: 4 MONTHS TIME PERIOD: July 1990 - October 1990 TIDAL EPOCH: 1983-2001 CONTROL TIDE STATION: 8726520 ST. PETERSBURG, TAMPA BAY Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS: MEAN HIGHER HIGH WATER MHHW = 0.687 MEAN HIGH WATER MHW = 0.596 North American Vertical Datum NAVD88 = 0.494 MEAN SEA LEVEL MSL = 0.363 MEAN TIDE LEVEL MTL = 0.356 MEAN LOW WATER MLW = 0.116 MEAN LOWER LOW WATER MLLW = 0.000 North American Vertical Datum (NAVD88) Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW NO 2 1975 2.711 2.115 NO 3 1975 2.787 2.191 NO 5 1975 2.453 1.857 82 2.672 2.076 6243 A 2008 1.556 0.960 S 689 4.789 4.193 GIS 103 1.794 1.198 Foot Notes: Geodetic heights of the bench marks meet all NOAA/NOS/NGS quality control standards for Second Order, Class 1 leveling. It is advised that a confirmation set of levels be established for bench marks 6243 A 2008, GIS 103, and S 689 to verify height differences before using tidal bench mark elevation information.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 7 of 7 Station ID: 8726243 PUBLICATION DATE: 05/12/2011 Name: ANNA MARIA OUTSIDE FL NOAA Chart: 11424 Latitude: 27° 29.8' N ( 27.49670) USGS Quad: BRADENTON BEACH Longitude: 82° 42.8' W ( -82.71330) 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.