U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 6 Station ID: 8465705 PUBLICATION DATE: 12/10/2020 Name: NEW HAVEN, NEW HAVEN HARBOR CT NOAA Chart: 12371 Latitude: 41° 17.0' N ( 41.28330) USGS Quad: New Haven Longitude: 72° 54.5' W ( -72.90830) To reach the tide station and tidal bench marks from Interstate 95 North in New Haven, take Exit 50 for Woodward Avenue and proceed down ramp for 0.5 km (0.3 mi). Keep right at the fork and follow signs for the Port Area, make a sharp right turn and proceed northwest for 0.3 km (0.2 mi) toward Fulton Terrace. Turn left onto Fulton Terrace and proceed south for 0.1 km (0.06 mi) to Connecticut Avenue and continue for 0.5 km (0.3 mi) to the first right turn on Connecticut Avenue. Turn right and proceed to the guard stationed entrance to the PSEG Power Plant. Visitors must call one or two days prior, and check in with the guard at the gate upon arrival. Ask the guard to unlock the fuel dock (pier). Follow the entrance road towards the water, then turn left and follow the road along the water to the fuel dock. The tide station is on the south side of the offshore end of the fuel dock, and the tidal bench marks are located on the fuel dock and along a road running north and parallel with the water. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: 5705 D 1999 DESIGNATION: 846 5705 D MONUMENTATION: Tidal Station disk VM#: 16033 AGENCY: National Ocean Service (NOS) IDB PID: SETTING CLASSIFICATION: Tower concrete foundation OPUS PID: LATITUDE: 41° 17.1' N ( 41.28422) LONGITUDE: 72° 54.3' W ( -72.90553) The primary bench mark is a disk set in the SE corner of the concrete foundation for the first electric high tension transmission tower near the PSEG power plant, 16.90 m (55.4 ft) west of a north/south chain link fence that runs along the water, 13.90 m (45.6 ft) west of the west edge of a paved road leading to the plant, 7.69 m (25.2 ft) north of a chain link fence that surrounds hydrogen tanks, and 0.6 m (2.0 ft) above ground.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 6 Station ID: 8465705 PUBLICATION DATE: 12/10/2020 Name: NEW HAVEN, NEW HAVEN HARBOR CT NOAA Chart: 12371 Latitude: 41° 17.0' N ( 41.28330) USGS Quad: New Haven Longitude: 72° 54.5' W ( -72.90830) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 5705 A 1999 DESIGNATION: 846 5705 A MONUMENTATION: Tidal Station disk VM#: 16034 AGENCY: National Ocean Service (NOS) IDB PID: SETTING CLASSIFICATION: Concrete pier OPUS PID: LATITUDE: 41° 17.0' N ( 41.28331) LONGITUDE: 72° 54.5' W ( -72.90775) The bench mark is a disk set along the south side of the offshore end of the fuel pier, 15.03 m (49.3 ft) south of the north side of the pier, 12.78 m (41.9 ft) east of the west end of the pier, and 0.65 m (2.1 ft) north of the south side of the pier. BENCH MARK STAMPING: 5705 C 1999 DESIGNATION: 846 5705 C MONUMENTATION: Tidal Station disk VM#: 16036 AGENCY: National Ocean Service (NOS) IDB PID: SETTING CLASSIFICATION: Concrete pier OPUS PID#: BBDD09 LATITUDE: 41° 17.0' N ( 41.28322) LONGITUDE: 72° 54.4' W ( -72.90611) The bench mark is a disk set in the NE corner of the fuel pier, 19.38 m (63.6 ft) east of the second bollard on the north side of the shore end of the pier, 3.54 m (11.6 ft) west of the NE outside corner of the pier, 5.55 m (18.2 ft) north of the north railing, and 0.67 m (2.2 ft) south of the first bollard on the north side of pier.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 6 Station ID: 8465705 PUBLICATION DATE: 12/10/2020 Name: NEW HAVEN, NEW HAVEN HARBOR CT NOAA Chart: 12371 Latitude: 41° 17.0' N ( 41.28330) USGS Quad: New Haven Longitude: 72° 54.5' W ( -72.90830) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 5705 E 1999 DESIGNATION: 846 5705 E MONUMENTATION: Tidal Station disk VM#: 16037 AGENCY: National Ocean Service (NOS) IDB PID: SETTING CLASSIFICATION: Tower concrete foundation OPUS PID: LATITUDE: 41° 17.1' N ( 41.28553) LONGITUDE: 72° 54.3' W ( -72.90536) The bench mark is a disk set in the SE corner of the concrete foundation for the second electric high tension transmission tower north of the PSEG power plant, 23.48 m (77.0 ft) NW of a metal manhole cover, 19.10 m (62.7 ft) west of the west edge of a paved road leading to the plant, 10.64 m (34.9 ft) east of a north/south chain link fence that runs along the water, and 0.61 m (2.0 ft) above ground. BENCH MARK STAMPING: 5705 G 2017 DESIGNATION: 846 5705 G MONUMENTATION: Bench Mark disk VM#: 22494 AGENCY: National Ocean Service (NOS) IDB PID: SETTING CLASSIFICATION: Building foundation OPUS PID: LATITUDE: 41° 17.2' N ( 41.28664) LONGITUDE: 72° 54.3' W ( -72.90444) The bench mark is a brass disk set in the conrete foundation of Power Distribution Center 2 on the north end of the PSEG Grounds and is located 32.61 m (107.0) ft east of the west corner of the concrete pad for Service Station XFMR 2, 26.51 m (87.0 ft) south of the northern fenceline of the PSEG property, and 3.50 m (11.5 ft) north of the northern wall for LM6000 Combustion Generator Unit 4.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 6 Station ID: 8465705 PUBLICATION DATE: 12/10/2020 Name: NEW HAVEN, NEW HAVEN HARBOR CT NOAA Chart: 12371 Latitude: 41° 17.0' N ( 41.28330) USGS Quad: New Haven Longitude: 72° 54.5' W ( -72.90830) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 5705 F 2017 DESIGNATION: 846 5705 F MONUMENTATION: Bench Mark disk VM#: 22495 AGENCY: National Ocean Service (NOS) IDB PID: SETTING CLASSIFICATION: Foundation for large condensate tank OPUS PID: LATITUDE: 41° 17.1' N ( 41.28422) LONGITUDE: 72° 54.2' W ( -72.90400) The bench mark is a brass disk set in the concrete foundation of Condensate Tank B near the parking lot for the main power plant operations building and is located 32.30 m (106.0 ft) ESE of the northeast corner of the main power plant operations building, 14.42 m (47.3 ft) west of the western rail for the ladder on Condensate Tank A, and 0.77 m (2.5 ft) north of the eastern rail for the ladder on Condensate Tank B.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 6 Station ID: 8465705 PUBLICATION DATE: 12/10/2020 Name: NEW HAVEN, NEW HAVEN HARBOR CT NOAA Chart: 12371 Latitude: 41° 17.0' N ( 41.28330) USGS Quad: New Haven Longitude: 72° 54.5' W ( -72.90830) T I D A L D A T U M S Tidal datums at NEW HAVEN, NEW HAVEN HARBOR based on: LENGTH OF SERIES: 18 YEARS TIME PERIOD: November 1999 - July 2019 TIDAL EPOCH: 1983-2001 CONTROL TIDE STATION: 8467150 BRIDGEPORT, BRIDGEPORT HARBOR Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS: HIGHEST OBSERVED WATER LEVEL (10/30/2012) = 3.732 MEAN HIGHER HIGH WATER MHHW = 2.050 MEAN HIGH WATER MHW = 1.952 MEAN SEA LEVEL MSL = 1.015 MEAN TIDE LEVEL MTL = 1.013 MEAN LOW WATER MLW = 0.074 MEAN LOWER LOW WATER MLLW = 0.000 LOWEST OBSERVED WATER LEVEL (01/06/2018) = -0.986 North American Vertical Datum (NAVD88) Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW 5705 D 1999 4.386 2.434 5705 A 1999 4.042 2.090 5705 C 1999 4.050 2.098 5705 E 1999 4.376 2.424 5705 G 2017 4.836 2.884 5705 F 2017 4.563 2.611
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 6 of 6 Station ID: 8465705 PUBLICATION DATE: 12/10/2020 Name: NEW HAVEN, NEW HAVEN HARBOR CT NOAA Chart: 12371 Latitude: 41° 17.0' N ( 41.28330) USGS Quad: New Haven Longitude: 72° 54.5' W ( -72.90830) 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.