U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 6 Station ID: 9759412 PUBLICATION DATE: 08/02/2011 Name: AGUADILLA, CRASHBOAT BEACH PR NOAA Chart: 25671 Latitude: 18° 27.4' N ( 18.45664) USGS Quad: AGUADILLA Longitude: 67° 9.9' W ( -67.16458) To reach the beach marks from San Juan, take Highway 2 west towards the City of Aquadilla about a two hour drive, look for the highway sign for the Borinquen Airport and Ramey Air Base and Highway 107, take 107 North (right) for 1.1 km (0.68 mi) to the intersection of Rt 458, take Rt 458 West (left) for 1.1 km (0.68 mi) to Crashboat Public Beach. The bench marks are located along the pier. The NOAA Station is located on the most southerly of four concrete cells. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: NO 3 1975 DESIGNATION: 975 9412 TIDAL 3 MONUMENTATION: Tidal Station disk VM#: 15119 AGENCY: National Ocean Survey (NOS) IDB PID#: DE5552 SETTING CLASSIFICATION: Concrete pier OPUS PID: LATITUDE: 18° 27.5' N ( 18.45844) LONGITUDE: 67° 9.8' W ( -67.16336) The primary bench mark is a disk set in a concrete retaining wall 16.2 m (53.2 ft) SW of the center of the driveway, 13.4 m (44.0 ft) south of the entrance to the lot, 2.5 m (8.2 ft) NW of the center of the walkway, 0.9 m (3.0 ft) SW of the NE end of a concrete retaining wall, and 1.0 m (3.3 ft) above the level of the highway.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 6 Station ID: 9759412 PUBLICATION DATE: 08/02/2011 Name: AGUADILLA, CRASHBOAT BEACH PR NOAA Chart: 25671 Latitude: 18° 27.4' N ( 18.45664) USGS Quad: AGUADILLA Longitude: 67° 9.9' W ( -67.16458) T I D A L B E N C H M A R K S BENCH MARK STAMPING: NO 2 1975 DESIGNATION: 975 9412 TIDAL 2 MONUMENTATION: Tidal Station disk VM#: 15118 AGENCY: National Ocean Survey (NOS) IDB PID#: DE5553 SETTING CLASSIFICATION: Concrete platform pier OPUS PID: LATITUDE: 18° 27.4' N ( 18.45731) LONGITUDE: 67° 9.9' W ( -67.16497) The bench mark is a disk set on the top of a concrete platform 3/4 of the way down crash boat pier and near a metal walkway that leads to an outer cell. BENCH MARK STAMPING: NO 5 1975 DESIGNATION: 975 9412 TIDAL 5 MONUMENTATION: Tidal Station disk VM#: 15121 AGENCY: National Ocean Survey (NOS) IDB PID#: DE5551 SETTING CLASSIFICATION: Concrete step OPUS PID: LATITUDE: 18° 27.5' N ( 18.45881) LONGITUDE: 67° 9.8' W ( -67.16272) The bench mark is a disk set in a concrete step, 17.2 m (56.4 ft) east of the north column of a stone entrance, 5.0 m (16.4 ft) north of the center of a driveway, 0.2 m (0.7 ft) west of the east end of the second concrete step of a cottage (abandoned), and 1.4 m (4.6 ft) above the level of the highway. The cottage is no longer there and the steps and foundation are overgrown with vegetation.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 6 Station ID: 9759412 PUBLICATION DATE: 08/02/2011 Name: AGUADILLA, CRASHBOAT BEACH PR NOAA Chart: 25671 Latitude: 18° 27.4' N ( 18.45664) USGS Quad: AGUADILLA Longitude: 67° 9.9' W ( -67.16458) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 9412 A 2006 DESIGNATION: 975 9412 A TIDAL MONUMENTATION: Tidal Station disk VM#: 18113 AGENCY: National Ocean Service (NOS) IDB PID#: SETTING CLASSIFICATION: OPUS PID: LATITUDE: 18° 27.4' N ( 18.45672) LONGITUDE: 67° 9.9' W ( -67.16478) The bench mark is a disk set in the southern most of four concrete cells, 9.05 m (29.7 ft) north of the south end of the cell, 5.90 m (19.4 ft) NW of the center of two bollards. BENCH MARK STAMPING: 9412 B 2006 DESIGNATION: 975 9412 B TIDAL MONUMENTATION: Tidal Station disk VM#: 18114 AGENCY: National Ocean Service (NOS) IDB PID#: DO1588 SETTING CLASSIFICATION: Retaining Wall OPUS PID#: DO1588 LATITUDE: 18° 27.5' N ( 18.45811) LONGITUDE: 67° 9.8' W ( -67.16392) The bench mark is a disk set in a retaining wall on the second finger pier of four, 13.95 m (45.8 ft) west of the first finger pier, 11.55 m (37.9 ft) north of the south end of the pier, 6.10 m (20.0 ft) south of the east west bulkhead of the main pier, and 0.20 m (0.7 ft) above the concrete deck.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 6 Station ID: 9759412 PUBLICATION DATE: 08/02/2011 Name: AGUADILLA, CRASHBOAT BEACH PR NOAA Chart: 25671 Latitude: 18° 27.4' N ( 18.45664) USGS Quad: AGUADILLA Longitude: 67° 9.9' W ( -67.16458) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 9412 D 2007 DESIGNATION: 975 9412 D MONUMENTATION: Tidal Station disk VM#: 18292 AGENCY: National Ocean Survey (NOS) IDB PID#: DO1589 SETTING CLASSIFICATION: step OPUS PID: LATITUDE: 18° 27.6' N ( 18.45942) LONGITUDE: 67° 9.8' W ( -67.16358) The bench mark is a disk set in the bottom concrete step located east of Verde Mar Bar and on the east side of parking lot, 12.80 m (42.0 ft) east from the NE corner of Verde Mar Bar, 4.50 m (14.8 ft) west from power pole 25 on the east side of Verde Mar Bar, 1.13 m (3.7 ft) north from the south end of bottom step of being the second set of steps leading to a residence at the top of the hill, 0.77 m (2.53 ft) above the ground next to the steps. BENCH MARK STAMPING: 9412 E 2008 DESIGNATION: 975 9412 E MONUMENTATION: Tidal Station disk VM#: 18687 AGENCY: IDB PID#: DO1590 SETTING CLASSIFICATION: Concrete Platform OPUS PID#: DO1590 LATITUDE: 18° 27.4' N ( 18.45736) LONGITUDE: 67° 9.9' W ( -67.16442) The bench mark is a disk set in the middle of the L Finger Pier at the end of the pier on the south side, 5.63 m (18.5 ft) SW of the most SW bollard of two bollards on the SE side of the pier, 3.45 m (11.3 ft) se of the NW face of the pier which has a 0.90 m (3.0 ft) raised concrete ledge which runs the entire length of the pier, 2.60 m (8.5 ft) NE of the SW face of a concrete finger pier.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 6 Station ID: 9759412 PUBLICATION DATE: 08/02/2011 Name: AGUADILLA, CRASHBOAT BEACH PR NOAA Chart: 25671 Latitude: 18° 27.4' N ( 18.45664) USGS Quad: AGUADILLA Longitude: 67° 9.9' W ( -67.16458) T I D A L D A T U M S Tidal datums at AGUADILLA, CRASHBOAT BEACH based on: LENGTH OF SERIES: 2 YEARS TIME PERIOD: September 2006 - August 2008 TIDAL EPOCH: 1983-2001 CONTROL TIDE STATION: 9755371 SAN JUAN, LA PUNTILLA, SAN JUAN BAY Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS: HIGHEST OBSERVED WATER LEVEL (10/28/2007) = 0.706 MEAN HIGHER HIGH WATER MHHW = 0.416 MEAN HIGH WATER MHW = 0.343 MEAN SEA LEVEL MSL = 0.191 MEAN TIDE LEVEL MTL = 0.190 Puerto Rico Vertical Datum of 2002 PRVD02 = 0.176 MEAN LOW WATER MLW = 0.037 MEAN LOWER LOW WATER MLLW = 0.000 LOWEST OBSERVED WATER LEVEL (04/27/2009) = -0.228 Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW NO 3 1975 3.104 2.761 NO 2 1975 2.277 1.934 NO 5 1975 8.225 7.882 9412 A 2006 2.306 1.963 9412 B 2006 1.642 1.299 9412 D 2007 3.780 3.437 9412 E 2008 1.431 1.088
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 6 of 6 Station ID: 9759412 PUBLICATION DATE: 08/02/2011 Name: AGUADILLA, CRASHBOAT BEACH PR NOAA Chart: 25671 Latitude: 18° 27.4' N ( 18.45664) USGS Quad: AGUADILLA Longitude: 67° 9.9' W ( -67.16458) 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 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 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.