U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 6 Station ID: 9435362 PUBLICATION DATE: 07/15/2004 Name: TOLEDO OR NOAA Chart: 18581 Latitude: 44° 37.0' N ( 44.61670) USGS Quad: TOLEDO Longitude: 123° 56.2' W (-123.93700) To reach the tidal bench marks from Toledo City Hall, proceed south along Main Street North for 0.5 km (0.3 mi) to its intersection with Butler Bridge Road SW, then turn left and proceed SE along Butler Bridge Road SW for 0.2 km (0.1 mi) to the Yaquina Boat Works. The bench marks are located at Yaquina Boat Works and along Main Street. The tide staff and gage were located on the SW face of the Port of Toledo pier. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: 5362 A 1982 DESIGNATION: 943 5362 A TIDAL MONUMENTATION: Tidal Station disk VM#: 8831 AGENCY: National Ocean Survey (NOS) IDB PID#: SETTING CLASSIFICATION: Concrete pad OPUS PID: LATITUDE: 44° 37.0' N ( 44.61670) LONGITUDE: 123° 56.2' W (-123.93700) The primary bench mark is a disk set flush in a concrete pad located at the west-facing vehicle entry door of the 24 m x 15 m (80 x 50 ft) corrugated steel building of the Yaquina Boat Works, 49 m (160 ft) west of the intersection of the centerlines of Butler Bridge Road SW and Catherine Street, 47 m (154 ft) SW of the centerline of Butler Bridge Road SW, 13 m (44 ft) SW of the NW corner of the Yaquina Boat Works building, and 0.3 m (1 ft) west of the buildings west face.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 6 Station ID: 9435362 PUBLICATION DATE: 07/15/2004 Name: TOLEDO OR NOAA Chart: 18581 Latitude: 44° 37.0' N ( 44.61670) USGS Quad: TOLEDO Longitude: 123° 56.2' W (-123.93700) T I D A L B E N C H M A R K S BENCH MARK STAMPING: U 156 1941 DESIGNATION: U 156 MONUMENTATION: Survey disk VM#: 8830 AGENCY: Oregon Highway Department IDB PID#: QE1022 SETTING CLASSIFICATION: Concrete porch OPUS PID: LATITUDE: 44° 37.3' N ( 44.62170) LONGITUDE: 123° 56.2' W (-123.93700) The bench mark is a disk set on the SE corner of a concrete porch at the west entrance of the City Hall building located at 206 Main Street, 6.89 m (22.6 ft) north of the SW corner of the building, 1.58 m (5.2 ft) south of the center of the entrance, and 0.09 m (0.3 ft) west of the west face of the building, and 0.40 m (1.3 m) above the sidewalk. BENCH MARK STAMPING: 5362 B 1982 DESIGNATION: 943 5362 B TIDAL MONUMENTATION: Tidal Station disk VM#: 8832 AGENCY: National Ocean Survey (NOS) IDB PID#: SETTING CLASSIFICATION: Concrete retaining wall OPUS PID: LATITUDE: 44° 37.0' N ( 44.61670) LONGITUDE: 123° 56.2' W (-123.93700) The bench mark is a disk set flush in a concrete retaining wall located adjacent to the parking lot for the National Security Bank at the intersection of Main and Graham Streets, 27 m (88 ft) north of the center of the entrance doors of the bank, 19 m (62 ft) east of the centerline of Main Street South, 10 m (32 ft) south of the centerline of Graham Street, and 1 m (4 ft) above ground level.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 6 Station ID: 9435362 PUBLICATION DATE: 07/15/2004 Name: TOLEDO OR NOAA Chart: 18581 Latitude: 44° 37.0' N ( 44.61670) USGS Quad: TOLEDO Longitude: 123° 56.2' W (-123.93700) T I D A L B E N C H M A R K S BENCH MARK STAMPING: DESIGNATION: 5362 C 1982 ALIAS: NO STAMPING 1 MONUMENTATION: Metal Rod VM#: 8833 AGENCY: City of Toledo IDB PID#: SETTING CLASSIFICATION: Concrete monument OPUS PID: LATITUDE: 44° 37.2' N ( 44.61950) LONGITUDE: 123° 56.0' W (-123.93400) The bench mark is a 0.5-inch reinforcing bar set in concrete monument located at the intersection of Main Street South and 2nd Street SE, 19 m (61 ft) east of the centerline of Butler Bridge Road SW, and 0.06 m (0.2 ft) below an iron monument cover marked "Monument".
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 6 Station ID: 9435362 PUBLICATION DATE: 07/15/2004 Name: TOLEDO OR NOAA Chart: 18581 Latitude: 44° 37.0' N ( 44.61670) USGS Quad: TOLEDO Longitude: 123° 56.2' W (-123.93700) T I D A L B E N C H M A R K S BENCH MARK STAMPING: DESIGNATION: 5362 D 1982 ALIAS: NO STAMPING 2 MONUMENTATION: Bench Mark disk VM#: 8834 AGENCY: City of Toledo IDB PID#: SETTING CLASSIFICATION: Concrete water pipe OPUS PID: LATITUDE: 44° 37.2' N ( 44.61950) LONGITUDE: 123° 56.0' W (-123.93400) The bench mark is a disk set in a 0.3 m (1 ft) diameter concrete water pipe, 102 m (334 ft) SE of the centerline of Catherine Street, 13 m (44 ft) SW of the centerline of Butler Bridge Road SW, 5 m (15 ft) west of the westernmost corner of the pumphouse, 2 m (7 ft) SE of a 0.76 m (2.5 ft) diameter manhole cover set in concrete 0.3 m (1 ft) above ground level, and 0.3 m (1 ft) NE of a witness post.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 6 Station ID: 9435362 PUBLICATION DATE: 07/15/2004 Name: TOLEDO OR NOAA Chart: 18581 Latitude: 44° 37.0' N ( 44.61670) USGS Quad: TOLEDO Longitude: 123° 56.2' W (-123.93700) T I D A L D A T U M S Tidal datums at TOLEDO based on: LENGTH OF SERIES: 1 MONTH TIME PERIOD: November 1982 - November 1982 TIDAL EPOCH: 1983-2001 CONTROL TIDE STATION: 9439040 ASTORIA, TONGUE POINT, COLUMBIA RIVER Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS: MEAN HIGHER HIGH WATER MHHW = 2.690 MEAN HIGH WATER MHW = 2.483 MEAN TIDE LEVEL MTL = 1.435 MEAN SEA LEVEL MSL = 1.431 MEAN LOW WATER MLW = 0.388 MEAN LOWER LOW WATER MLLW = 0.000 North American Vertical Datum (NAVD88) Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW 5362 A 1982 4.172 1.689 U 156 1941 19.167 16.684 5362 B 1982 13.556 11.073 5362 C 1982 6.807 4.324 5362 D 1982 3.465 0.982
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 6 of 6 Station ID: 9435362 PUBLICATION DATE: 07/15/2004 Name: TOLEDO OR NOAA Chart: 18581 Latitude: 44° 37.0' N ( 44.61670) USGS Quad: TOLEDO Longitude: 123° 56.2' W (-123.93700) 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.