U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 7 Station ID: 8720651 PUBLICATION DATE: 08/25/2011 Name: CRESCENT BEACH, MATANZAS RIVER FL NOAA Chart: 11485 Latitude: 29° 46.1' N ( 29.76830) USGS Quad: ST AUGUSTINE BEACH Longitude: 81° 15.5' W ( -81.25830) To reach the tidal bench marks from the intersection of State Road A1A and County Road 206 in Crescent Beach, proceed south on State Road A1A for 0.48 km (0.30 mi) to the intersection of Green Street, turn right and continue west on Green Street for 0.24 km (0.15 mi) to the end of Green Street and a boat ramp. By boat, go north along the Intercoastal Waterway (Matansas River) for about 0.24 km (0.15 mi) to the Aqua Trak on the right attached to the south end of the east channel fender, extending about 3.05 m (10.0 ft) above the level of the water. The bench marks are located in the vicinity of the east end of the bridge over the Matanzas River. The tide gage was located at the south end of the east channel fender under the bridge. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: 0651 B 1996 DESIGNATION: 872 0651 B TIDAL MONUMENTATION: Flange-encased Rod VM#: 15880 AGENCY: National Ocean Service (NOS) IDB PID#: SETTING CLASSIFICATION: Stainless steel rod OPUS PID#: BBFG17 LATITUDE: 29° 46.1' N ( 29.76833) LONGITUDE: 81° 15.4' W ( -81.25722) The primary bench mark is a flange-encased rod located 60.96 m (200.0 ft) east of 872 0651 C 1996, 12.65 m (41.5 ft) NW of the NW corner of a swimming pool, 4.57 m (15.0 ft) east of the west bank of the Intercoastal Waterway (Mantanzas River), 1.22m (4.0 ft) NE of the west end of a brick fence and 0.30 m (1.0 ft) east of a carsonite witness post. The datum point is set at ground level, being the top of a stainless steel rod driven 24.38 m (80.0 ft) to refusal, and encased in a 5-inch NOS logo cap flush with the ground.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 7 Station ID: 8720651 PUBLICATION DATE: 08/25/2011 Name: CRESCENT BEACH, MATANZAS RIVER FL NOAA Chart: 11485 Latitude: 29° 46.1' N ( 29.76830) USGS Quad: ST AUGUSTINE BEACH Longitude: 81° 15.5' W ( -81.25830) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 0651 A 1996 DESIGNATION: 872 0651 A TIDAL MONUMENTATION: Bench Mark disk VM#: 15879 AGENCY: National Ocean Service (NOS) IDB PID#: SETTING CLASSIFICATION: Concrete piling cap OPUS PID: LATITUDE: 29° 46.1' N ( 29.76833) LONGITUDE: 81° 15.5' W ( -81.25806) The bench mark is a disk set flush in the top the SW piling cap on the east side of the bridge over the Intercoastal Waterway (Matanzas River), 67.06 m (220.0 ft) NE of 0651 B 1996, about 35.05 m (115.0 ft) north of 872 0651 AQUA TRAK, and 3.66 m (12.0 ft) south of the centerline of the bridge. BENCH MARK STAMPING: 0651 C 1996 DESIGNATION: 872 0651 C TIDAL MONUMENTATION: Bench Mark disk VM#: 15881 AGENCY: National Ocean Service (NOS) IDB PID#: SETTING CLASSIFICATION: Concrete monument OPUS PID: LATITUDE: 29° 46.1' N ( 29.76889) LONGITUDE: 81° 15.4' W ( -81.25667) The bench mark is a disk set in the top of a round concrete monument flush with the ground and level with the road, 106.68 m (350.0 ft) east of 0651 A 1996, 8.47 m (27.8 ft) south of the centerline of Coastal Drive, 6.31 m (20.7 ft) west of the centerline of Avenue G (Pomar Road), and 0.61 m (2.0 ft) east of a carsonite witness post.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 7 Station ID: 8720651 PUBLICATION DATE: 08/25/2011 Name: CRESCENT BEACH, MATANZAS RIVER FL NOAA Chart: 11485 Latitude: 29° 46.1' N ( 29.76830) USGS Quad: ST AUGUSTINE BEACH Longitude: 81° 15.5' W ( -81.25830) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 0651 D 1996 DESIGNATION: 872 0651 D TIDAL MONUMENTATION: Tidal Station disk VM#: 15882 AGENCY: National Ocean Service (NOS) IDB PID#: SETTING CLASSIFICATION: Concrete monument OPUS PID: LATITUDE: 29° 46.2' N ( 29.76944) LONGITUDE: 81° 15.3' W ( -81.25500) The bench mark is a disk set in the top of a round concrete monument flush with the ground and level with the road, 108.20 m (355.0 ft) east of 0651 C 1996, 5.27 m (17.3 ft) east of the centerline of Middleton Avenue, 3.72 m (12.2 ft) north of the extended centerline of Coastal Drive, 1.89 m (6.2 ft) south of a power pole, and 0.61 m (2.0 ft) west of a carsonite witness post. BENCH MARK STAMPING: 0651 E 1996 DESIGNATION: 872 0651 E TIDAL MONUMENTATION: Flange-encased Rod VM#: 15883 AGENCY: National Ocean Service (NOS) IDB PID#: SETTING CLASSIFICATION: Stainless steel rod OPUS PID: LATITUDE: 29° 46.4' N ( 29.77333) LONGITUDE: 81° 15.3' W ( -81.25556) The bench mark is a flange-encased rod located 83.82 m (275.0 ft) west of the centerline of State Road A1A, 29.90 m (98.1 ft) south of the centerline of State Road 206, 20.33 m (66.7 ft) south of a metal light pole, 8.08 m (26.5 ft) south of the centerline of Middleton Avenue, 6.64 m (21.8 ft) west of the centerline of Avenue D and 0.61 m (2.0 ft) north of a carsonite witness post. The datum point is set flush with the ground, being the top of a stainless steel rod driven 24.38 m (80.0 ft) to refusal, and encased in a 5-inch NOS logo cap.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 7 Station ID: 8720651 PUBLICATION DATE: 08/25/2011 Name: CRESCENT BEACH, MATANZAS RIVER FL NOAA Chart: 11485 Latitude: 29° 46.1' N ( 29.76830) USGS Quad: ST AUGUSTINE BEACH Longitude: 81° 15.5' W ( -81.25830) T I D A L B E N C H M A R K S BENCH MARK STAMPING: V 321 1970 DESIGNATION: V 321 MONUMENTATION: Bench Mark disk VM#: 15884 AGENCY: National Geodetic Survey (NGS) IDB PID#: AQ0367 SETTING CLASSIFICATION: Concrete monument OPUS PID: LATITUDE: 29° 46.4' N ( 29.77333) LONGITUDE: 81° 15.3' W ( -81.25556) The bench mark is a disk set in the top of a round concrete monument recessed 0.06 m (0.2 ft) below the level of the ground and level with the road, 15.61 m (51.2 ft) east of the centerline of State Road A1A, 3.29 m (10.8 ft) north of the centerline of a driveway leading to house number 6680, 0.91 m (3.0 ft) NW of a utility pole, and 0.61 m (2.0 ft) west of a fence corner.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 7 Station ID: 8720651 PUBLICATION DATE: 08/25/2011 Name: CRESCENT BEACH, MATANZAS RIVER FL NOAA Chart: 11485 Latitude: 29° 46.1' N ( 29.76830) USGS Quad: ST AUGUSTINE BEACH Longitude: 81° 15.5' W ( -81.25830) T I D A L B E N C H M A R K S BENCH MARK STAMPING: W 321 1970 DESIGNATION: W 321 MONUMENTATION: Bench Mark disk VM#: 15885 AGENCY: National Geodetic Survey (NGS) IDB PID#: AQ0363 SETTING CLASSIFICATION: Concrete monument OPUS PID: LATITUDE: 29° 47.3' N ( 29.78806) LONGITUDE: 81° 15.6' W ( -81.26000) The bench mark is a disk set in the top of a round concrete monument projecting 0.09 m (0.3 ft) above the level of the ground and about 0.30 m (1.0 ft) below the level of the road, 73.15 m (240.0 ft) south of the extended centerline of Mary Street, 13.66 m (44.8 ft) west of the centerline of State Road A1A, 8.41 m (27.6 ft) SW of the south end of a pipe culvert, 0.61 m (2.0 ft) north of a power pole, and 0.64 m (2.1 ft) south of a metal witness post.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 6 of 7 Station ID: 8720651 PUBLICATION DATE: 08/25/2011 Name: CRESCENT BEACH, MATANZAS RIVER FL NOAA Chart: 11485 Latitude: 29° 46.1' N ( 29.76830) USGS Quad: ST AUGUSTINE BEACH Longitude: 81° 15.5' W ( -81.25830) T I D A L D A T U M S Tidal datums at CRESCENT BEACH, MATANZAS RIVER based on: LENGTH OF SERIES: 1 YEAR TIME PERIOD: January 2004 - December 2004 TIDAL EPOCH: 1983-2001 CONTROL TIDE STATION: 8720218 BAR PILOTS DOCK, ST JOHNS RIVER Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS: HIGHEST OBSERVED WATER LEVEL (09/27/2004) = 2.129 MEAN HIGHER HIGH WATER MHHW = 1.389 MEAN HIGH WATER MHW = 1.294 North American Vertical Datum NAVD88 = 0.814 MEAN SEA LEVEL MSL = 0.703 MEAN TIDE LEVEL MTL = 0.675 MEAN LOW WATER MLW = 0.056 MEAN LOWER LOW WATER MLLW = 0.000 LOWEST OBSERVED WATER LEVEL (12/13/2004) = -0.565 North American Vertical Datum (NAVD88) Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW 0651 B 1996 1.926 0.632 0651 A 1996 1.888 0.594 0651 C 1996 2.963 1.669 0651 D 1996 2.626 1.332 0651 E 1996 2.161 0.867 V 321 1970 2.354 1.060 W 321 1970 2.229 0.935
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 7 of 7 Station ID: 8720651 PUBLICATION DATE: 08/25/2011 Name: CRESCENT BEACH, MATANZAS RIVER FL NOAA Chart: 11485 Latitude: 29° 46.1' N ( 29.76830) USGS Quad: ST AUGUSTINE BEACH Longitude: 81° 15.5' W ( -81.25830) 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.