U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 6 PUBLICATION DATE: 05/12/1989 Station ID: 9449211 SUPERCEDED DATE: 04/21/2003 Name: BELLINGHAM, BELLINGHAM BAY WASHINGTON NOAA Chart: 18424 Latitude: 48° 44.7' N USGS Quad: BELLINGHAM SOUTH Longitude: 122° 29.7' W To reach the tidal bench marks from the intersection of West Holly Street and Cornwall Avenue in downtown Bellingham, proceed SW on Cornwall Avenue to the entrance of Port of Bellingham North Terminal, then NW on Beal Memorial Way to the waterfront. The bench marks are in the vicinity of the North Terminal and the Standard Oil pier near Roeder Avenue and C Street. The tide gage and staff were at the SW end of Port of Bellingham North Terminal. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: 7 1934 MONUMENTATION: Survey Disk VM#: 9287 AGENCY: PID#: TR0031 SETTING CLASSIFICATION: Large Structure The bench mark is set vertically in the north face of and near the NW corner of the Georgia Pacific Corporation Building at the south corner of the intersection of Central and Roeder Avenues, 2 blocks SE of the Burlington Northern Railway station, SW of the tracks, 1.2 feet (0.4 m) SE of the north corner of the building, and 4 feet (1 m) above ground level. BENCH MARK STAMPING: PRIM TRAV STA NO 7 67 B 1917 WASH MONUMENTATION: Survey Disk VM#: 9285 AGENCY: PID#: TR0032 SETTING CLASSIFICATION: Cement Block The bench mark is set in the top of a cement block base of a column on the north side of the front entrance to Bellingham Public Museum, at the top of the NW concrete balustrade, on the west side of Prospect Street between West Champion and Floral Streets, 2 feet (1 m) NW of the NW end of the concrete steps near the base of the column, and 8 feet (2 m) above sidewalk level.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 6 PUBLICATION DATE: 05/12/1989 Station ID: 9449211 SUPERCEDED DATE: 04/21/2003 Name: BELLINGHAM, BELLINGHAM BAY WASHINGTON NOAA Chart: 18424 Latitude: 48° 44.7' N USGS Quad: BELLINGHAM SOUTH Longitude: 122° 29.7' W T I D A L B E N C H M A R K S BENCH MARK STAMPING: 6 1934 MONUMENTATION: Survey Disk VM#: 9286 AGENCY: PID#: TR0033 SETTING CLASSIFICATION: Concrete Abutment The bench mark is set in the top of the NE end of the NW concrete abutment of the Chestnut Street overhead bridge (viaduct) of the Burlington Northern Railway located at the T-intersection of Bay and West Chestnut Street, 30 feet (9 m) NW of Bay Street, 27 feet (8 m) NE of the centerline of Chestnut Street, and 1 foot (0.3 m) below street level. BENCH MARK STAMPING: 8 1934 MONUMENTATION: Survey Disk VM#: 9288 AGENCY: PID#: TR0030 SETTING CLASSIFICATION: Small Structure The bench mark is set vertically in the SE face of and near the east corner of a small one-story stucco building occupied by A.C. Northwest at 1111 C Street, at the intersection of Roeder Avenue and C Street, 180 feet (55 m) east of a way station of the Burlington Northern Railway, on the SW side of the tracks, 1.5 feet (0.5 m) NW of the east corner of the building, and 2 feet (1 m) above ground level. BENCH MARK STAMPING: 9 1973 MONUMENTATION: Survey Disk VM#: 9289 AGENCY: PID: SETTING CLASSIFICATION: Concrete Wall The bench mark is set in top of a 0.5-foot (0.2 m) wide (at top) by 4-foot (1 m) high concrete wall surrounding the Standard Oil storage tanks, 90 feet (27 m) NW of the SW end of C street, and 2.5 feet (0.8 m) NE of the south corner of the wall.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 6 PUBLICATION DATE: 05/12/1989 Station ID: 9449211 SUPERCEDED DATE: 04/21/2003 Name: BELLINGHAM, BELLINGHAM BAY WASHINGTON NOAA Chart: 18424 Latitude: 48° 44.7' N USGS Quad: BELLINGHAM SOUTH Longitude: 122° 29.7' W T I D A L B E N C H M A R K S BENCH MARK STAMPING: 10 1973 MONUMENTATION: Survey Disk VM#: 9290 AGENCY: PID: SETTING CLASSIFICATION: Concrete Buttress The bench mark is set in the top of a 1-foot (0.3 m) square by 4-foot (1 m) high concrete buttress along the SE concrete wall surrounding the Standard Oil storage tanks, 108 feet (33 m) SE of the SW end of C Street, and 2.8 feet (0.9 m) NE of the south corner of the wall. BENCH MARK STAMPING: 11 1973 MONUMENTATION: Survey Disk VM#: 9291 AGENCY: PID: SETTING CLASSIFICATION: Concrete Platform The bench mark is set in the top of the raised loading platform at the south corner of the large concrete transit shed of Port of Bellingham, 0.3 mile (0.5 km) NW along Beal Memorial Way from its intersection with Cornwall Avenue, 2.4 feet (0.7 m) NE of a hydrant, 0.8 foot (0.2 m) SE of the south corner of the shed, and 3.2 feet (1.0 m) above ground level. BENCH MARK STAMPING: 12 1973 MONUMENTATION: Survey Disk VM#: 9292 AGENCY: PID: SETTING CLASSIFICATION: Concrete Base The bench mark is set on top of the NE edge of a 28-foot (9 m) diameter concrete base of a former storage tank, near Bench Mark 11 1973, 61.3 feet (18.7 m) SE of the east corner of the large concrete transit shed of Port of Bellingham, 22.5 feet (6.9 m) SW of a wooden sea wall, 19.5 feet (5.9 m) SSW of a wooden pole, 1.2 feet (0.4 m) NW of a 0.7-foot (0.2 m) wide groove in the concrete base, and 0.5 foot (0.2 m) SW of the edge of the concrete base.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 6 PUBLICATION DATE: 05/12/1989 Station ID: 9449211 SUPERCEDED DATE: 04/21/2003 Name: BELLINGHAM, BELLINGHAM BAY WASHINGTON NOAA Chart: 18424 Latitude: 48° 44.7' N USGS Quad: BELLINGHAM SOUTH Longitude: 122° 29.7' W T I D A L B E N C H M A R K S BENCH MARK STAMPING: U 454 1973 MONUMENTATION: Survey Disk VM#: 9293 AGENCY: PID#: TR0034 SETTING CLASSIFICATION: Concrete Curb The bench mark is set on the NW concrete curb of the Cornwall Avenue overpass (over the tracks of Burlington Northern Railway), 60 feet (18 m) west of the centerline intersection of Cornwall Avenue and East Maple Street, and 1 foot (0.3 m) above street level. BENCH MARK STAMPING: 13 1974 MONUMENTATION: Survey Disk VM#: 9294 AGENCY: PID: SETTING CLASSIFICATION: Concrete Foundation The bench mark is set flush in the outer foundation of the sliding door on the SW side of the brick sewage pumping station at the intersection of Cornwall Avenue and Beal Memorial Way, opposite the entrance to Port of Bellingham North Terminal, 111 feet (34 m) SE of the centerline of Cornwall Avenue, and 1 foot (0.3 m) NW of the SE side of the sliding door. BENCH MARK STAMPING: N 6 RESET MONUMENTATION: Survey Disk VM#: 9295 AGENCY: PID#: TR0029 SETTING CLASSIFICATION: Concrete Foundation The bench mark is set vertically in the SW face of the concrete foundation at the Burlington Northern Railway station, 150 feet (46 m) north of the inter- section of C Street and Roeder Avenue, 1.5 feet (0.5 m) NW of the south corner of the foundation, and 0.5 foot (0.2 m) above the sidewalk.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 6 PUBLICATION DATE: 05/12/1989 Station ID: 9449211 SUPERCEDED DATE: 04/21/2003 Name: BELLINGHAM, BELLINGHAM BAY WASHINGTON NOAA Chart: 18424 Latitude: 48° 44.7' N USGS Quad: BELLINGHAM SOUTH Longitude: 122° 29.7' W T I D A L D A T U M S Tidal datums at BELLINGHAM, BELLINGHAM BAY based on: LENGTH OF SERIES: 1 YEAR TIME PERIOD: FEBRUARY 1974 - JANUARY 1975 TIDAL EPOCH: 1960-1978 CONTROL TIDE STATION: 9449880 FRIDAY HARBOR Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in FEET: HIGHEST OBSERVED WATER LEVEL (01/05/1975) = 10.52 MEAN HIGHER HIGH WATER MHHW = 8.46 MEAN HIGH WATER MHW = 7.70 MEAN TIDE LEVEL MTL = 5.09 * NATIONAL GEODETIC VERTICAL DATUM NGVD29 = 4.51 MEAN LOW WATER MLW = 2.48 MEAN LOWER LOW WATER MLLW = 0.00 LOWEST OBSERVED WATER LEVEL (12/30/1974) = -3.37 * NGVD reference based on adjustment of 3/14/78 and NOS levels of 1975. North American Vertical Datum (NAVD88) Bench Mark Elevation Information In FEET above: Stamping or Designation MLLW MHW 7 1934 20.84 13.14 PRIM TRAV STA NO 7 67 B 1917 WASH 73.00 65.30 6 1934 41.55 33.85 8 1934 20.76 13.06 9 1973 18.67 10.97 10 1973 17.61 9.91 11 1973 18.31 10.61 12 1973 15.26 7.56 U 454 1973 40.14 32.44 13 1974 16.91 9.21 N 6 RESET 20.08 12.38
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 6 of 6 PUBLICATION DATE: 05/12/1989 Station ID: 9449211 SUPERCEDED DATE: 04/21/2003 Name: BELLINGHAM, BELLINGHAM BAY WASHINGTON NOAA Chart: 18424 Latitude: 48° 44.7' N USGS Quad: BELLINGHAM SOUTH Longitude: 122° 29.7' 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 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 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.