U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 9 Station ID: 9449211 PUBLICATION DATE: 12/12/2003 Name: BELLINGHAM WA NOAA Chart: 18424 Latitude: 48° 44.7' N ( 48.74500) USGS Quad: BELLINGHAM SOUTH Longitude: 122° 29.7' W (-122.49500) 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
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 9 Station ID: 9449211 PUBLICATION DATE: 12/12/2003 Name: BELLINGHAM WA NOAA Chart: 18424 Latitude: 48° 44.7' N ( 48.74500) USGS Quad: BELLINGHAM SOUTH Longitude: 122° 29.7' W (-122.49500) T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: 7 1934 DESIGNATION: TIDAL 7 MONUMENTATION: Bench Mark disk VM#: 9287 AGENCY: US Coast and Geodetic Survey (USC&GS) IDB PID#: TR0031 SETTING CLASSIFICATION: Building OPUS PID: LATITUDE: 48° 45.1' N ( 48.75170) LONGITUDE: 122° 29.0' W (-122.48300) The primary bench mark is a disk set vertically in the north face of and near the NW corner of the Georgia Pacific Corporation Building located at the south corner of the intersection of Central and Roeder Avenues, 22.43 m (73.6 ft) SW and across roeder Avenue from the SW rail of Burlington-Northern railroad, 11 m (37ft) SE of the centerline of Central Avenue, 11 m (35 ft) SW of the centerline of Reoeder Avenue, 0.37 m (1.2 ft) SE of the north corner of the building, and 1 m (4 ft) above ground level.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 9 Station ID: 9449211 PUBLICATION DATE: 12/12/2003 Name: BELLINGHAM WA NOAA Chart: 18424 Latitude: 48° 44.7' N ( 48.74500) USGS Quad: BELLINGHAM SOUTH Longitude: 122° 29.7' W (-122.49500) T I D A L B E N C H M A R K S BENCH MARK STAMPING: PRIM TRAV STA NO 7 67 B 1917 WASH DESIGNATION: PTS 7 67 B MONUMENTATION: Survey disk VM#: 9285 AGENCY: US Geological Survey (USGS) IDB PID#: TR0032 SETTING CLASSIFICATION: Balustrade OPUS PID: LATITUDE: 48° 45.2' N ( 48.75330) LONGITUDE: 122° 28.9' W (-122.48200) The bench mark is a disk set in the top of the NE corner of the north concrete balustrade of the Prospect Street entrance of the Bellingham Public Museum located at the SW corner of the junction of Prospect and Flora Streets, 23 m (74 ft) south of the extended centerline of Flora Street, 6.10 m (20.0 ft) west of the west curb of Prospect Street, 1 m (2 ft) NW of the NW end of the concrete steps near the base of the column, 0.12 m (0.4 ft) NE of the NE edge of a concrete pillar, and 1.98 m (6.5 ft) above sidewalk level. BENCH MARK STAMPING: 6 1934 DESIGNATION: 944 9211 TIDAL 6 MONUMENTATION: Bench Mark disk VM#: 9286 AGENCY: US Coast and Geodetic Survey (USC&GS) IDB PID#: TR0033 SETTING CLASSIFICATION: Concrete abutment OPUS PID: LATITUDE: 48° 45.0' N ( 48.75000) LONGITUDE: 122° 29.0' W (-122.48300) The bench mark is a disk 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 Chestnut Street, 9 m (30 ft) NW of Bay Street, 9 m (29 ft) NE of the centerline of Chestnut Street, and 1 m (2 ft) below the sidewalk.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 9 Station ID: 9449211 PUBLICATION DATE: 12/12/2003 Name: BELLINGHAM WA NOAA Chart: 18424 Latitude: 48° 44.7' N ( 48.74500) USGS Quad: BELLINGHAM SOUTH Longitude: 122° 29.7' W (-122.49500) T I D A L B E N C H M A R K S BENCH MARK STAMPING: TIDAL 9 1973 DESIGNATION: 944 9211 TIDAL 9 MONUMENTATION: Tidal Station disk VM#: 9289 AGENCY: US Coast and Geodetic Survey (USC&GS) IDB PID#: SETTING CLASSIFICATION: Concrete wall OPUS PID: LATITUDE: 48° 44.7' N ( 48.74500) LONGITUDE: 122° 29.7' W (-122.49500) The bench mark is a disk set in top of a 0.15 m (0.5 ft) wide (at top) by 1 m (4 ft) high concrete wall surrounding the Standard Oil storage tanks, 27 m (90 ft) NW of the SW end of C street, and 0.76 m (2.5 ft) NE of the south corner of the wall. BENCH MARK STAMPING: TIDAL 10 1973 DESIGNATION: 944 9211 TIDAL 10 MONUMENTATION: Tidal Station disk VM#: 9290 AGENCY: US Coast and Geodetic Survey (USC&GS) IDB PID#: SETTING CLASSIFICATION: Concrete buttress OPUS PID: LATITUDE: 48° 44.7' N ( 48.74500) LONGITUDE: 122° 29.7' W (-122.49500) The bench mark is a disk set in the top of a 0.3 m (1 ft) square by 1 m (4 ft) high concrete buttress located along the SE concrete wall surrounding the Standard Oil storage tanks, 33 m (108 ft) SE of the SW end of C Street, and 0.85 m (2.8 ft) NE of the south corner of the wall.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 9 Station ID: 9449211 PUBLICATION DATE: 12/12/2003 Name: BELLINGHAM WA NOAA Chart: 18424 Latitude: 48° 44.7' N ( 48.74500) USGS Quad: BELLINGHAM SOUTH Longitude: 122° 29.7' W (-122.49500) T I D A L B E N C H M A R K S BENCH MARK STAMPING: TIDAL 11 1973 DESIGNATION: 944 9211 TIDAL 11 MONUMENTATION: Tidal Station disk VM#: 9291 AGENCY: US Coast and Geodetic Survey (USC&GS) IDB PID#: SETTING CLASSIFICATION: Platform OPUS PID: LATITUDE: 48° 44.7' N ( 48.74500) LONGITUDE: 122° 29.7' W (-122.49500) The bench mark is a disk set in the top of the raised loading platform located at the south corner of the large concrete transit shed of Port of Bellingham, 0.5 km (0.3 mi) NW along Beal Memorial Way from its intersection with Cornwall Avenue, 0.73 m (2.4 ft) NE of a hydrant, 0.24 m (0.8 ft) SE of the south corner of the shed, and 0.98 m (3.2 ft) above ground level. BENCH MARK STAMPING: TIDAL 12 1973 DESIGNATION: 944 9211 TIDAL 12 MONUMENTATION: Tidal Station disk VM#: 9292 AGENCY: US Coast and Geodetic Survey (USC&GS) IDB PID#: SETTING CLASSIFICATION: Concrete foundation OPUS PID: LATITUDE: 48° 44.7' N ( 48.74500) LONGITUDE: 122° 29.7' W (-122.49500) The bench mark is a disk set on top of the NE edge of a 9 m (28 ft) diameter concrete base of a former storage tank, 0.5 km (0.3 mi) NW along Beal Memorial Way from its intersection with Cornwall Avenue, 18.68 m (61.3 ft) SSE of the east corner of the large concrete transit shed of Port of Bellingham, 6.86 m (22.5 ft) SW of a wooden sea wall, 5.94 m (19.5 ft) SSW of a wooden pole, 0.37 m (1.2 ft) NW of a 0.21 m (0.7 ft) wide groove in the concrete base, and 0.15 m (0.5 ft) SW of the edge of the concrete base.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 6 of 9 Station ID: 9449211 PUBLICATION DATE: 12/12/2003 Name: BELLINGHAM WA NOAA Chart: 18424 Latitude: 48° 44.7' N ( 48.74500) USGS Quad: BELLINGHAM SOUTH Longitude: 122° 29.7' W (-122.49500) T I D A L B E N C H M A R K S BENCH MARK STAMPING: U 454 1973 DESIGNATION: U 454 MONUMENTATION: Bench Mark disk VM#: 9293 AGENCY: National Geodetic Survey (NGS) IDB PID#: TR0034 SETTING CLASSIFICATION: Concrete curb OPUS PID: LATITUDE: 48° 44.8' N ( 48.74670) LONGITUDE: 122° 29.0' W (-122.48300) The bench mark is a disk set on the NW concrete curb of the Cornwall Avenue overpass (over the tracks of Burlington Northern Railway) located at the west corner of the junction of Cornwall Avenue and East Maple Street, 19 m (63 ft) SW of the extended centerline intersection of East Maple Street, and 0.3 m (1 ft) above Cornwall Avenue level. BENCH MARK STAMPING: 13 1974 DESIGNATION: 944 9211 TIDAL 13 MONUMENTATION: Tidal Station disk VM#: 9294 AGENCY: National Ocean Survey (NOS) IDB PID#: SETTING CLASSIFICATION: Sliding door foundation OPUS PID: LATITUDE: 48° 44.7' N ( 48.74500) LONGITUDE: 122° 29.7' W (-122.49500) The bench mark is a disk set flush in the outer foundation of the sliding door on the SW side of the brick sewage pumping station located at the intersection of Cornwall Avenue and Beal Memorial Way, opposite the entrance to Port of Bellingham North Terminal, 34 m (111 ft) SE of the centerline of Cornwall Avenue, and 0.3 m (1 ft) NW of the SE side of the door.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 7 of 9 Station ID: 9449211 PUBLICATION DATE: 12/12/2003 Name: BELLINGHAM WA NOAA Chart: 18424 Latitude: 48° 44.7' N ( 48.74500) USGS Quad: BELLINGHAM SOUTH Longitude: 122° 29.7' W (-122.49500) T I D A L B E N C H M A R K S BENCH MARK STAMPING: N 6 RESET 1951 DESIGNATION: N 6 RESET 1951 MONUMENTATION: Bench Mark disk VM#: 9295 AGENCY: US Coast and Geodetic Survey (USC&GS) IDB PID#: TR0029 SETTING CLASSIFICATION: Concrete foundation OPUS PID: LATITUDE: 48° 45.2' N ( 48.75330) LONGITUDE: 122° 29.2' W (-122.48700) The bench mark is a disk set vertically in the SW face of the concrete foundation at the Burlington Northern Railway station located at the C street crossing, 46 m (150 ft) north of the intersection of C Street and Roeder Avenue, 0.46 m (1.5 ft) NW of the south corner of the foundation, and 0.15 m (0.5 ft) above the sidewalk.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 8 of 9 Station ID: 9449211 PUBLICATION DATE: 12/12/2003 Name: BELLINGHAM WA NOAA Chart: 18424 Latitude: 48° 44.7' N ( 48.74500) USGS Quad: BELLINGHAM SOUTH Longitude: 122° 29.7' W (-122.49500) T I D A L D A T U M S Tidal datums at BELLINGHAM based on: LENGTH OF SERIES: 1 YEAR TIME PERIOD: February 1974 - January 1975 TIDAL EPOCH: 1983-2001 CONTROL TIDE STATION: 9449880 FRIDAY HARBOR, SAN JUAN CHANNEL Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS: HIGHEST OBSERVED WATER LEVEL (01/05/1975) = 3.177 MEAN HIGHER HIGH WATER MHHW = 2.594 MEAN HIGH WATER MHW = 2.375 MEAN TIDE LEVEL MTL = 1.546 MEAN SEA LEVEL MSL = 1.510 MEAN LOW WATER MLW = 0.718 North American Vertical Datum NAVD88 = 0.147 MEAN LOWER LOW WATER MLLW = 0.000 LOWEST OBSERVED WATER LEVEL (12/30/1974) = -1.057 North American Vertical Datum (NAVD88) Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW 7 1934 6.323 3.948 PRIM TRAV STA NO 7 67 B 1917 WASH 22.222 19.847 6 1934 12.634 10.259 TIDAL 9 1973 5.662 3.287 TIDAL 10 1973 5.338 2.963 TIDAL 11 1973 5.545 3.170 TIDAL 12 1973 4.618 2.243 U 454 1973 12.204 9.829 13 1974 5.121 2.746 N 6 RESET 1951 6.092 3.717
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 9 of 9 Station ID: 9449211 PUBLICATION DATE: 12/12/2003 Name: BELLINGHAM WA NOAA Chart: 18424 Latitude: 48° 44.7' N ( 48.74500) USGS Quad: BELLINGHAM SOUTH Longitude: 122° 29.7' W (-122.49500) 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.