U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 5 Station ID: 8453767 PUBLICATION DATE: 04/21/2003 Name: PAWTUXET COVE, PROVIDENCE RIVER RI NOAA Chart: 13224 Latitude: 41° 45.7' N ( 41.76170) USGS Quad: PROVIDENCE Longitude: 71° 23.3' W ( -71.38830) To reach the tidal bench marks from I-95 exit 14 - Route 37, take exit 14 and proceed east on Route 37 for 1.4 km (0.9 mi) to Post Road (Route 1), continue north on Post Road for 1.3 km (0.8 mi) to Route 1 Alternate. Proceed north on Route 1 Alternate for 2.7 km (1.7 mi) to Broad Street, take a right turn onto Broad Street and continue for 0.2 km (0.1 mi) to Remington Street. Make a left turn onto Remington Street and proceed to the end of the road. The bench marks are located at the Broad Street bridge over the Pawtuxet River, in the Pavilion located in the park between Remington Street and the bridge, at the Asprey Boat House, and at the end of Remington Street. The tide gage and staff were located on the south side of the private dock located at 6 Remington Street. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: 3767 A 1994 DESIGNATION: 845 3767 A MONUMENTATION: Tidal Station disk VM#: 12882 AGENCY: National Ocean Service (NOS) IDB PID#: SETTING CLASSIFICATION: Concrete storm drain culvert OPUS PID: LATITUDE: 41° 45.7' N ( 41.76170) LONGITUDE: 71° 23.3' W ( -71.38830) The primary bench mark is a disk set on a concrete storm drain culvert at the east end of Remington Street, 17.31 m (56.8 ft) NW of the SE corner of the seawall, 10.79 m (35.4 ft) north of the NE corner of the porch of the house at 6 Remington Street, 2.41 m (7.9 ft) east of the west end of a stone wall, and 1 m (3 ft) below the road.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 5 Station ID: 8453767 PUBLICATION DATE: 04/21/2003 Name: PAWTUXET COVE, PROVIDENCE RIVER RI NOAA Chart: 13224 Latitude: 41° 45.7' N ( 41.76170) USGS Quad: PROVIDENCE Longitude: 71° 23.3' W ( -71.38830) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 3767 B 1994 DESIGNATION: 845 3767 B MONUMENTATION: Tidal Station disk VM#: 12883 AGENCY: National Ocean Service (NOS) IDB PID#: SETTING CLASSIFICATION: Concrete sea wall OPUS PID: LATITUDE: 41° 45.7' N ( 41.76170) LONGITUDE: 71° 23.3' W ( -71.38830) The bench mark is a disk set on the concrete seawall of the Asprey Boat House, 21.00 m (68.9 ft) south of the flag pole, 9.20 m (30.2 ft) SE of the SE corner of the boat house, and 2.19 m (7.2 ft) WNW of the SE corner of the seawall. BENCH MARK STAMPING: 3767 C 1994 DESIGNATION: 845 3767 C MONUMENTATION: Tidal Station disk VM#: 12884 AGENCY: National Ocean Service (NOS) IDB PID#: SETTING CLASSIFICATION: Concrete foundation for gazebo OPUS PID: LATITUDE: 41° 45.8' N ( 41.76330) LONGITUDE: 71° 23.4' W ( -71.39000) The bench mark is a disk set in the east side of the concrete foundation for a gazebo located in the SE area of Pawtuxet Park along the south side of Broad Street, 47.09 m (154.5 ft) ESE of the south side of Broad Street, 34.99 m (114.8 ft) north of the centerline of the drive leading to the Asprey boat house, 0.09 m (0.3 ft) west of the east side of the gazebo foundation, and level with ground.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 5 Station ID: 8453767 PUBLICATION DATE: 04/21/2003 Name: PAWTUXET COVE, PROVIDENCE RIVER RI NOAA Chart: 13224 Latitude: 41° 45.7' N ( 41.76170) USGS Quad: PROVIDENCE Longitude: 71° 23.3' W ( -71.38830) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 3767 D 1994 DESIGNATION: 845 3767 D MONUMENTATION: Tidal Station disk VM#: 12885 AGENCY: National Ocean Service (NOS) IDB PID#: SETTING CLASSIFICATION: Concrete sidewalk OPUS PID: LATITUDE: 41° 45.8' N ( 41.76330) LONGITUDE: 71° 23.4' W ( -71.39000) The bench mark is a disk set in the concrete sidewalk at the SW end of the Pawtuxet Bridge on Broad Street (Route 1A), 26.40 m (86.6 ft) north of the flag pole, 11.49 m (37.7 ft) WNW of the centerline of Broad Street, and 0.24 m (0.8 ft) ESE of the wall of the bridge. BENCH MARK STAMPING: 3767 E 1994 DESIGNATION: 845 3767 E MONUMENTATION: Tidal Station disk VM#: 12886 AGENCY: National Ocean Service (NOS) IDB PID#: SETTING CLASSIFICATION: Concrete sidewalk OPUS PID: LATITUDE: 41° 45.9' N ( 41.76500) LONGITUDE: 71° 23.4' W ( -71.39000) The bench mark is a disk set at the NW end of the Pawtuxet Bridge on Broad Street (Route 1A), 8.99 m (29.5 ft) west of the centerline of Broad Street, 3.20 m (10.5 ft) SW of power pole number 442, and 0.21 m (0.7 ft) east of the wall of the bridge.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 5 Station ID: 8453767 PUBLICATION DATE: 04/21/2003 Name: PAWTUXET COVE, PROVIDENCE RIVER RI NOAA Chart: 13224 Latitude: 41° 45.7' N ( 41.76170) USGS Quad: PROVIDENCE Longitude: 71° 23.3' W ( -71.38830) T I D A L D A T U M S Tidal datums at PAWTUXET COVE, PROVIDENCE RIVER based on: LENGTH OF SERIES: 4 Months TIME PERIOD: June 1994 - September 1994 TIDAL EPOCH: 1983-2001 CONTROL TIDE STATION: 8454000 PROVIDENCE, PROVIDENCE RIVER Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS: MEAN HIGHER HIGH WATER MHHW = 1.456 MEAN HIGH WATER MHW = 1.380 MEAN TIDE LEVEL MTL = 0.717 MEAN SEA LEVEL MSL = 0.670 MEAN LOW WATER MLW = 0.054 MEAN LOWER LOW WATER MLLW = 0.000 North American Vertical Datum (NAVD88) Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW 3767 A 1994 2.295 0.915 3767 B 1994 2.233 0.853 3767 C 1994 5.540 4.160 3767 D 1994 6.698 5.318 3767 E 1994 6.749 5.369
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 5 Station ID: 8453767 PUBLICATION DATE: 04/21/2003 Name: PAWTUXET COVE, PROVIDENCE RIVER RI NOAA Chart: 13224 Latitude: 41° 45.7' N ( 41.76170) USGS Quad: PROVIDENCE Longitude: 71° 23.3' W ( -71.38830) 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.