U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 6 Station ID: 9447659 PUBLICATION DATE: 02/05/2004 Name: EVERETT WA NOAA Chart: 18443 Latitude: 47° 58.8' N ( 47.98000) USGS Quad: EVERETT Longitude: 122° 13.4' W (-122.22300) To reach the tidal bench marks from the intersection of Rucker Avenue and Hewitt Avenue in Everett, proceed west on Hewitt Avenue, then cross under the Burlington Northern railroad tracks at the termination of Hewitt Avenue at the waterfront, then turn left and proceed SW on Terminal Street for 0.24 km (0.15 mi) to the Port of Everett Pier 1 Complex, then turn right and proceed through the pier 1 NW gate, then head west to the extreme seaward side of pier 1. The bench marks are on the shore area around the pier. The tide gage and staff were at the center of the pier end. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: 5 1934 DESIGNATION: 944 7659 TIDAL 5 MONUMENTATION: Tidal Station disk VM#: 9204 AGENCY: US Coast & Geodetic Survey (USC&GS) IDB PID#: SETTING CLASSIFICATION: Abutment OPUS PID: LATITUDE: 47° 58.6' N ( 47.97670) LONGITUDE: 122° 13.2' W (-122.22000) The primary bench mark is a disk set in the lowest step at the NW end of the NE abutment of the railroad bridge over Wall Street, 137 m (450 ft) SW of the SW end of the passenger station, 5.64 m (18.5 ft) NE of the centerline of Wall Street, 5.18 m (17.0 ft) NW of the NW rail, 4.57 m (15.0 ft) below the track, 0.91 m (3.0 ft) SE of the SE end of the concrete retaining wall, and 0.76 m (2.5 ft) above the sidewalk level.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 6 Station ID: 9447659 PUBLICATION DATE: 02/05/2004 Name: EVERETT WA NOAA Chart: 18443 Latitude: 47° 58.8' N ( 47.98000) USGS Quad: EVERETT Longitude: 122° 13.4' W (-122.22300) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 4 1934 DESIGNATION: 944 7659 TIDAL 4 MONUMENTATION: Tidal Station disk VM#: 9202 AGENCY: US Coast & Geodetic Survey (USC&GS) IDB PID#: SY0004 SETTING CLASSIFICATION: Abutment OPUS PID: LATITUDE: 47° 58.8' N ( 47.98000) LONGITUDE: 122° 13.0' W (-122.21700) The bench mark is a disk set into the concrete abutment on the SE end of the NE concrete abutment of the steel railroad bridge over Hewitt Avenue, 100 m (330 ft) north of the railroad station, 13 rails NE of the NE end of the passenger station, 2.59 m (8.5 ft) SE of the SE rail, 2.13 m (7.0 ft) above the sidewalk, and 1.22 m (4.0 ft) below the level of the overhead tracks.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 6 Station ID: 9447659 PUBLICATION DATE: 02/05/2004 Name: EVERETT WA NOAA Chart: 18443 Latitude: 47° 58.8' N ( 47.98000) USGS Quad: EVERETT Longitude: 122° 13.4' W (-122.22300) T I D A L B E N C H M A R K S BENCH MARK STAMPING: J 7 ELEV 23.025 FT DESIGNATION: J 7 MONUMENTATION: Bench Mark disk VM#: 9203 AGENCY: US Coast & Geodetic Survey (USC&GS) IDB PID#: SY0003 SETTING CLASSIFICATION: Concrete abutment OPUS PID: LATITUDE: 47° 58.8' N ( 47.98000) LONGITUDE: 122° 13.0' W (-122.21700) The bench mark is a disk set into the concrete abutment at the Hewitt Avenue overhead bridge No. 406, in the top of the NW corner of the west stone abutment supporting steel column on the south curb line of Hewitt Avenue, 91 m (300 ft) NE of the NE end of the railroad station, 5.18 m (17.0 ft) south of the centerline of the south lane of Hewitt Avenue, and 5 m (16.0 ft) north of the retaining wall face at the SW end of underpass. BENCH MARK STAMPING: 7659 A 1995 DESIGNATION: 944 7659 A TIDAL MONUMENTATION: Tidal Station disk VM#: 17105 AGENCY: National Ocean Service (NOS) IDB PID#: SETTING CLASSIFICATION: Concrete retaining wall OPUS PID: LATITUDE: 47° 58.8' N ( 47.98000) LONGITUDE: 122° 13.4' W (-122.22300) The bench mark is set in a concrete bullrail located at the Port of Everett South Terminal, Dolphin Berth Pier, 14.48 m (47.5 ft) east of west face of pier, 6.43 m (21.1 ft) south of northeast corner of pier and 0.18m (0.6 ft) west of east face of pier.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 6 Station ID: 9447659 PUBLICATION DATE: 02/05/2004 Name: EVERETT WA NOAA Chart: 18443 Latitude: 47° 58.8' N ( 47.98000) USGS Quad: EVERETT Longitude: 122° 13.4' W (-122.22300) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 7659 B 1995 DESIGNATION: 944 7659 B TIDAL MONUMENTATION: Tidal Station disk VM#: 17106 AGENCY: National Ocean Service (NOS) IDB PID#: SETTING CLASSIFICATION: Concrete retaining wall OPUS PID: LATITUDE: 47° 58.8' N ( 47.98000) LONGITUDE: 122° 13.4' W (-122.22300) The bench mark is set in a concrete retaining wall for a storm drain culvert, 25.66 m (84.2 ft) southeast from southeast corner of blue metal building used for wood chip loading, 7.01 m (23.0 ft) west of chain link fence along railway, and 0.80 m (2.62 ft) east of west edge of storm drain wall.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 6 Station ID: 9447659 PUBLICATION DATE: 02/05/2004 Name: EVERETT WA NOAA Chart: 18443 Latitude: 47° 58.8' N ( 47.98000) USGS Quad: EVERETT Longitude: 122° 13.4' W (-122.22300) T I D A L D A T U M S Tidal datums at EVERETT based on: LENGTH OF SERIES: 2 MONTHS TIME PERIOD: December 1995 - January 1996 TIDAL EPOCH: 1983-2001 CONTROL TIDE STATION: 9447130 SEATTLE, PUGET SOUND Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS: MEAN HIGHER HIGH WATER MHHW = 3.380 MEAN HIGH WATER MHW = 3.114 MEAN TIDE LEVEL MTL = 1.984 MEAN SEA LEVEL MSL = 1.976 MEAN LOW WATER MLW = 0.854 North American Vertical Datum NAVD88 = 0.620 MEAN LOWER LOW WATER MLLW = 0.000 North American Vertical Datum (NAVD88) Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW 5 1934 7.048 3.934 4 1934 12.779 9.665 J 7 ELEV 23.025 FT 8.781 5.667 7659 A 1995 5.720 2.606 7659 B 1995 6.485 3.371
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 6 of 6 Station ID: 9447659 PUBLICATION DATE: 02/05/2004 Name: EVERETT WA NOAA Chart: 18443 Latitude: 47° 58.8' N ( 47.98000) USGS Quad: EVERETT Longitude: 122° 13.4' W (-122.22300) 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.