U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 6 PUBLICATION DATE: 08/07/1989 Station ID: 9759110 SUPERCEDED DATE: 04/21/2003 Name: MAGUEYES ISLAND, CARIBBEAN SEA PUERTO RICO NOAA Chart: 25671 Latitude: 17° 58.3' N USGS Quad: PARGUERA Longitude: 67° 2.8' W To reach the tidal bench marks from the intersection of Highway 116 and Highway 304, proceed south on Highway 304 for about 2 miles (3 km) to its end at the village of La Parguera, turn east and continue for 0.5 mile (0.8 km) to a boat dock. From the boat dock take a small boat to Magueyes Island. The bench marks are on the Institute of Marine Biology, University of Puerto Rico campus. The tide gage and staff are on an L-shaped pier on the west side of the island. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: TIDAL BM NO 1 CAMA UPR 1955 ELEV MONUMENTATION: Survey Disk VM#: 1398 AGENCY: PID: SETTING CLASSIFICATION: Concrete Block The bench mark is set flush in an 0.7-foot (0.2 m) square concrete block atop a 2-foot (1 m) high rock outcropping, 85.9 feet (26.2 m) SW of the south corner of the main laboratory building, 55.9 feet (17.0 m) north of the east corner of building #47-3-7-634, 44.5 feet (13.6 m) south of the south corner of the laboratory building, and 33.0 feet (10.1 m) east of the east edge of a sidewalk along the shore. BENCH MARK STAMPING: TIDAL BM NO 2 CAMA UPR 1955 ELEV MONUMENTATION: Survey Disk VM#: 1399 AGENCY: PID: SETTING CLASSIFICATION: Concrete Block The bench mark is set in a 0.7-foot (0.2 m) square concrete block between the main laboratory building and the new laboratory building, 78.0 feet (23.8 m) south of the main power and telephone pole, 27.8 feet (8.5 m) east of the SE corner of the new laboratory building, 14.5 feet (4.4 m) SW of the NW corner of the main laboratory building, and level with the ground.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 6 PUBLICATION DATE: 08/07/1989 Station ID: 9759110 SUPERCEDED DATE: 04/21/2003 Name: MAGUEYES ISLAND, CARIBBEAN SEA PUERTO RICO NOAA Chart: 25671 Latitude: 17° 58.3' N USGS Quad: PARGUERA Longitude: 67° 2.8' W T I D A L B E N C H M A R K S BENCH MARK STAMPING: TIDAL BM NO 3 CAMA UPR 1955 ELEV MONUMENTATION: Survey Disk VM#: 1400 AGENCY: PID: SETTING CLASSIFICATION: Concrete Block The bench mark is set in a 0.7-foot (0.2 m) square concrete block, 127 feet (39 m) SSE of the SE corner of building #47-3-7-557 (Physical Oceanography Office), 123 feet (37 m) south of the south corner of building #47-3-7-805, 11.5 feet (3.5 m) NE of the center of a 2-foot (1 m) diameter triple trunk tree, and level with the ground. BENCH MARK STAMPING: NO 5 1962 MONUMENTATION: Survey Disk VM#: 1401 AGENCY: PID: SETTING CLASSIFICATION: Concrete Block The bench mark is set in a 0.7-foot (0.2 m) square concrete block, 45 feet (14 m) east of the north corner of the laboratory building, and 35 feet (11 m) south of the restrooms. BENCH MARK STAMPING: 9110 A 1980 MONUMENTATION: Survey Disk VM#: 1402 AGENCY: PID: SETTING CLASSIFICATION: Bedrock The bench mark is set in bedrock in front of building #47-3-7-557 (Physical Oceanography Office), 37.5 feet (11.4 m) NE of the NW corner of the maintenance office, 20 feet (6 m) NE of a concrete barbecue pit, 16.2 feet (4.9 m) south of the west corner and 7.2 feet (2.2 m) NW of the south corner of building #47-3-7-557, and level with the ground.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 6 PUBLICATION DATE: 08/07/1989 Station ID: 9759110 SUPERCEDED DATE: 04/21/2003 Name: MAGUEYES ISLAND, CARIBBEAN SEA PUERTO RICO NOAA Chart: 25671 Latitude: 17° 58.3' N USGS Quad: PARGUERA Longitude: 67° 2.8' W T I D A L B E N C H M A R K S BENCH MARK STAMPING: 9110 B 1980 MONUMENTATION: Survey Disk VM#: 1403 AGENCY: PID: SETTING CLASSIFICATION: Bedrock The bench mark is set in bedrock north of the L-shaped pier, 72.9 feet (22.2 m) south of the power cable building, 36.8 feet (11.2 m) north of the NW corner of the air compressor building, 43.3 feet (13.2 m) west of the SW corner of the National Science Foundation building, and 8 feet (2 m) above pier walkway level. BENCH MARK STAMPING: 9110 D 1980 MONUMENTATION: Survey Disk VM#: 1404 AGENCY: PID: SETTING CLASSIFICATION: Bedrock The bench mark is set in bedrock along a pathway on the south side of the island, 78.9 feet (24.0 m) south of the SW corner of the woodworking shop, 38.3 feet (11.7 m) north of the SW corner of building #47-3-7-612, and about 23 feet (7 m) north of the shoreline. BENCH MARK STAMPING: 9110 E 1980 MONUMENTATION: Survey Disk VM#: 1405 AGENCY: PID: SETTING CLASSIFICATION: Bedrock The bench mark is set in bedrock along a pathway on the south side of the island, 65.5 feet (20.0 m) SSE of the south side of building #47-3-7-612, and about 20 feet (6 m) east of the shoreline.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 6 PUBLICATION DATE: 08/07/1989 Station ID: 9759110 SUPERCEDED DATE: 04/21/2003 Name: MAGUEYES ISLAND, CARIBBEAN SEA PUERTO RICO NOAA Chart: 25671 Latitude: 17° 58.3' N USGS Quad: PARGUERA Longitude: 67° 2.8' W T I D A L B E N C H M A R K S BENCH MARK STAMPING: 9110 F 1982 MONUMENTATION: Survey Disk VM#: 1406 AGENCY: PID: SETTING CLASSIFICATION: Concrete Footing The bench mark is set in the south side of a 2-foot (1 m) square concrete light pole footing, 61.0 feet (18.6 m) SW of the SW corner of building #47-3-7-557 (Physical Oceanography Office), and 52.0 feet (15.8 m) west of the NW corner of the maintenance building. BENCH MARK STAMPING: 9110 G 1982 MONUMENTATION: Survey Disk VM#: 1407 AGENCY: PID: SETTING CLASSIFICATION: Bedrock The bench mark is set in bedrock at the north end of the maintenance building, 32.2 feet (9.8 m) south of the SE corner of building #47-3-7-557 (Physical Oceanography Office), and 13.1 feet (4.0 m) NE of the NW corner, and 7.7 feet (2.3 m) north of the NE corner of the maintenance building.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 6 PUBLICATION DATE: 08/07/1989 Station ID: 9759110 SUPERCEDED DATE: 04/21/2003 Name: MAGUEYES ISLAND, CARIBBEAN SEA PUERTO RICO NOAA Chart: 25671 Latitude: 17° 58.3' N USGS Quad: PARGUERA Longitude: 67° 2.8' W T I D A L D A T U M S Tidal datums at MAGUEYES ISLAND, CARIBBEAN SEA based on: LENGTH OF SERIES: 19 YEARS TIME PERIOD: 1960-1978 TIDAL EPOCH: 1960-1978 CONTROL TIDE STATION: Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in FEET: HIGHEST OBSERVED WATER LEVEL (08/31/1979) = 2.23 MEAN HIGHER HIGH WATER MHHW = 0.70 MEAN HIGH WATER MHW = 0.69 MEAN TIDE LEVEL MTL = 0.35 MEAN LOW WATER MLW = 0.02 MEAN LOWER LOW WATER MLLW = 0.00 LOWEST OBSERVED WATER LEVEL (06/11/1968) = -0.80 Bench Mark Elevation Information In FEET above: Stamping or Designation MLLW MHW TIDAL BM NO 1 CAMA UPR 1955 ELEV 12.11 11.42 TIDAL BM NO 2 CAMA UPR 1955 ELEV 22.92 22.23 TIDAL BM NO 3 CAMA UPR 1955 ELEV 33.70 33.01 NO 5 1962 20.67 19.98 9110 A 1980 10.73 10.04 9110 B 1980 10.53 9.84 9110 D 1980 2.30 1.61 9110 E 1980 3.16 2.47 9110 F 1982 5.82 5.13 9110 G 1982 10.72 10.03
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 6 of 6 PUBLICATION DATE: 08/07/1989 Station ID: 9759110 SUPERCEDED DATE: 04/21/2003 Name: MAGUEYES ISLAND, CARIBBEAN SEA PUERTO RICO NOAA Chart: 25671 Latitude: 17° 58.3' N USGS Quad: PARGUERA Longitude: 67° 2.8' 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 any other fixed island datum. This tide station location has a defined island datum (PRVD02). Island datums are specific fixed geodetic datums whose elevation relationship 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 PRVD02 elevation is shown on the Elevations of Tidal Datums Table Referred to MLLW only when two or more of the bench marks listed have PRVD02 elevations. The PRVD02 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, PRVD02 bench mark elevations computed indirectly from the tidal datums elevation table may differ slightly from PRVD02 elevations listed for each bench mark in the NGS database.