U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 10 Station ID: 9410170 PUBLICATION DATE: 09/20/2017 Name: SAN DIEGO, SAN DIEGO BAY CA NOAA Chart: 18772 Latitude: 32° 42.9' N ( 32.71419) USGS Quad: POINT LOMA Longitude: 117° 10.4' W (-117.17358) To reach the tidal bench marks, proceed south on I-5 to 10th Avenue exit Downtown San Diego, proceed 4 blocks and turn right onto Broadway, proceed 16 blocks and turn left onto North Harbor Drive, then proceed one block to 960 North Harbor Drive which is where the Aircraft Carrier USS MIDWAY is moored. The tidal bench marks are located in this facility. Tide gauge is located in room 5A of the south side of the pier adjacent to the USS MIDWAY. To reach the temp MWWL sensor tide gauge, proceed south on I-5 to 10th Avenue exit Downtown San Diego, proceed 4 blocks and turn right onto Broadway, proceed 16 blocks and enter the Broadway Pier. MWWL sensor tide gauge is located on the extreme west end of the pier T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: 12 1926 DESIGNATION: 941 0170 TIDAL 12 MONUMENTATION: Bench Mark disk VM#: 904 AGENCY: US Coast and Geodetic Survey (USC&GS) IDB PID#: DC0891 SETTING CLASSIFICATION: Building OPUS PID: LATITUDE: 32° 42.9' N ( 32.71553) LONGITUDE: 117° 10.4' W (-117.17278) The primary bench mark is a disk set vertically in the west wall on the bay side of the Naval Broadway Complex Headquarters Building at the SE corner of the intersection of Harbor Drive and Broadway, 6.85 m (22.5 ft) north of the north side of the northernmost doorway along the bay side of the building, 6.63 m (21.8 ft) south of the fire hydrant on the south curb of Broadway, 2.92 m (9.6 ft) east of the east edge of the sidewalk along the east side of North Harbor Drive, 0.40 m (1.3 ft) south of the NW corner of the building, and 0.94 m (3.1 ft) above ground level.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 10 Station ID: 9410170 PUBLICATION DATE: 09/20/2017 Name: SAN DIEGO, SAN DIEGO BAY CA NOAA Chart: 18772 Latitude: 32° 42.9' N ( 32.71419) USGS Quad: POINT LOMA Longitude: 117° 10.4' W (-117.17358) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 0170 T 1991 DESIGNATION: 941 0170 T MONUMENTATION: Tidal Station disk VM#: 106 AGENCY: National Ocean Service (NOS) IDB PID#: SETTING CLASSIFICATION: Concrete storm drain slab OPUS PID: LATITUDE: 32° 42.8' N ( 32.71267) LONGITUDE: 117° 10.4' W (-117.17333) The bench mark is a disk set flush in the SW corner of a 1 x 1 m (3 x 3 ft) square concrete storm drain near the aircraft carrier USS Midway in a landscaped area between two sidewalks, 34 m (111 ft) west of the centerline of North Harbor Drive, 19.51 m (64.0 ft) east of the north-south running sea wall, and 16.00 m (52.5 ft) north of the centerline of the entrance to the Fish Market Restaurant. BENCH MARK STAMPING: 0170 V 1991 DESIGNATION: 941 0170 V MONUMENTATION: Tidal Station disk VM#: 107 AGENCY: National Ocean Service (NOS) IDB PID#: SETTING CLASSIFICATION: Concrete storm drain slab OPUS PID: LATITUDE: 32° 42.7' N ( 32.71158) LONGITUDE: 117° 10.4' W (-117.17292) The bench mark is a disk set flush in the SW corner of a 1 m x 1 m (4 x 4 ft) square concrete storm drain, 87 m (285 ft) SSE of the USS San Diego WWII monument, 21.18 m (69.5 ft) west of the west curb of North Harbor Drive, 11.22 m (36.8 ft) north of a triangular monument cover set in the sidewalk, 8.84 m (29.0 ft) NE of the sea wall, and 7.53 m (24.7 ft) west of concrete lamp pole BL27.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 10 Station ID: 9410170 PUBLICATION DATE: 09/20/2017 Name: SAN DIEGO, SAN DIEGO BAY CA NOAA Chart: 18772 Latitude: 32° 42.9' N ( 32.71419) USGS Quad: POINT LOMA Longitude: 117° 10.4' W (-117.17358) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 0170 X 2009 DESIGNATION: 941 0170 X MONUMENTATION: Tidal Station disk VM#: 19182 AGENCY: National Ocean Service (NOS) IDB PID#: SETTING CLASSIFICATION: Concrete bulkhead OPUS PID: LATITUDE: 32° 42.8' N ( 32.71411) LONGITUDE: 117° 10.4' W (-117.17353) The benchmark is a disk set in a concrete bulkhead along the USS Midway Museum pier on North Harbor Drive, 32.21 m (105.7 ft) east of the large bollard on the pier, 17.41 m (57.1 ft) west of the fire hydrant on the west side of North Harbor Drive, 10.53 m (34.5 ft) south of the SE corner of the Navy building in which the tide station is located, 1.95 m (6.4 ft) west of the east end of the bulkhead, and 0.59 m (1.9 ft) above the walking surface of the pier. BENCH MARK STAMPING: 0170 AA 2015 DESIGNATION: 941 0170 AA MONUMENTATION: Metal Rod VM#: 21421 AGENCY: National Ocean Service IDB PID#: SETTING CLASSIFICATION: Stainless steel rod OPUS PID#: BBFD86 LATITUDE: 32° 42.8' N ( 32.71356) LONGITUDE: 117° 10.4' W (-117.17311) The bench mark is a 9/16 inch (14 mm) stainless steel rod in the circular landscaping planter around the aircraft carrier memorial obelisk in the waterfront park E of the USS Midway, 35.5 m (116.5 ft) NNW of a yellow fire hydrant on the W side of N Harbor Dr., 14.5 m (47.6 ft) W of the centerline of N Harbor Dr., 3.5 m (11.5 ft) NE of the aircraft carrier memorial obelisk and 2.0 m (6.6 ft) N of the E light in the circular planter, stainless steel rod is driven 70.1 ft (21.4 m) to refusal.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 10 Station ID: 9410170 PUBLICATION DATE: 09/20/2017 Name: SAN DIEGO, SAN DIEGO BAY CA NOAA Chart: 18772 Latitude: 32° 42.9' N ( 32.71419) USGS Quad: POINT LOMA Longitude: 117° 10.4' W (-117.17358) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 0170 AB 2015 DESIGNATION: 941 0170 AB MONUMENTATION: Metal Rod VM#: 21422 AGENCY: National Ocean Service IDB PID#: SETTING CLASSIFICATION: Stainless steel rod OPUS PID: LATITUDE: 32° 42.7' N ( 32.71214) LONGITUDE: 117° 10.4' W (-117.17303) The bench mark is a 9/16 inch (14 mm) stainless steel rod at the N end of a planter area S of G Street and between N Harbor Dr. and a parking lot, 28.1 m (92.2 ft) S of the SW portion of the USS San Diego sculpture, 20.1 m (65.9 ft) E of the sea wall, 13.9 m (45.6 ft) N of storm drain on the E side of the parking lot, 0.6 m (2.0 ft) S of a metal witness post attached to a 3 hour parking sign at the entrance to the parking lot, stainless steel rod is driven 76 ft (23.2 m) to refusal. BENCH MARK STAMPING: 0170 AC 2015 DESIGNATION: 941 0170 AC MONUMENTATION: Metal Rod VM#: 21423 AGENCY: National Ocean Service IDB PID#: SETTING CLASSIFICATION: Stainless steel rod OPUS PID: LATITUDE: 32° 42.8' N ( 32.71250) LONGITUDE: 117° 10.4' W (-117.17403) The bench mark is a 9/16 inch (14 mm) stainless steel rod in a planter at the center of the road entrance to Tuna Harbor Park, 27.4 m (89.9 ft) SSE of the Clifton A.F. Sprague memorial, 19.5 m (64.0 ft) W of a light post (gl-1) on the S side of the entrance to Tuna Harbor Park, 5.1 m (16.7 ft) SW of a sewer manhole cover in the center of the entrance to Tuna Harbor Park and 0.2 m (0.7 ft) E of an orange fiberglass witness post, stainless steel rod is driven 72 ft (21.9 m) to refusal.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 10 Station ID: 9410170 PUBLICATION DATE: 09/20/2017 Name: SAN DIEGO, SAN DIEGO BAY CA NOAA Chart: 18772 Latitude: 32° 42.9' N ( 32.71419) USGS Quad: POINT LOMA Longitude: 117° 10.4' W (-117.17358) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 0170 AD 2015 DESIGNATION: 941 0170 AD MONUMENTATION: Survey disk VM#: 21424 AGENCY: National Ocean Service IDB PID#: SETTING CLASSIFICATION: OPUS PID: LATITUDE: 32° 42.9' N ( 32.71444) LONGITUDE: 117° 10.2' W (-117.17083) The bench mark is a disk set flush on the NE corner of a concrete vault with a green electrical box (d215095) near the SE corner of the intersection of E St. and the pacific highway, 19.5 m (64.0 ft) S of the centerline of E St. 16.4 m (53.8 ft) NNW of the NW corner of the office depot building and 3.1 m (10.2 ft) N of a light post. BENCH MARK STAMPING: 0170 AE 2015 DESIGNATION: 941 0170 AE MONUMENTATION: Survey disk VM#: 21425 AGENCY: National Ocean Service IDB PID#: SETTING CLASSIFICATION: OPUS PID: LATITUDE: 32° 42.9' N ( 32.71583) LONGITUDE: 117° 10.3' W (-117.17139) The bench mark is a disk set flush on the NE corner of a concrete vault with a green electrical box (d208615) on the N side of Broadway near the NW corner of the intersection of Broadway and the pacific highway, 15 m (49.2 ft) E of a storm drain on the N side of Broadway, 8.1 m (26.6 ft) W of a traffic light in the NW corner of the intersection and 7.7 m (25.3 ft) N of the center line of W bound Broadway.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 6 of 10 Station ID: 9410170 PUBLICATION DATE: 09/20/2017 Name: SAN DIEGO, SAN DIEGO BAY CA NOAA Chart: 18772 Latitude: 32° 42.9' N ( 32.71419) USGS Quad: POINT LOMA Longitude: 117° 10.4' W (-117.17358) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 0170 AF 2015 DESIGNATION: 941 0170 AF MONUMENTATION: Survey disk VM#: 21426 AGENCY: National Ocean Service IDB PID#: SETTING CLASSIFICATION: Retaining wall OPUS PID: LATITUDE: 32° 42.9' N ( 32.71472) LONGITUDE: 117° 10.4' W (-117.17333) The bench mark is a disk set flush on the E end of a concrete bull rail on the N side of navy pier, 10.4 m (34.1 ft) N of the NE corner of building 11, 7.9 m (25.9 ft) WNW of a metal electrical box on the waterfront walkway, 1.6 m (5.2 ft) S of the gate entrance to the loading dock for Hornblower cruise ships, 1.1 m (3.6 ft) N of the N rail track on navy pier and 0.6 m (2.0 ft) W of the E end of the bull rail. BENCH MARK STAMPING: 0170 AG 2017 DESIGNATION: 941 0170 AG MONUMENTATION: Tidal Station disk VM#: 22299 AGENCY: National Ocean Service (NOS) IDB PID#: SETTING CLASSIFICATION: Concrete pier OPUS PID: LATITUDE: 32° 42.9' N ( 32.71556) LONGITUDE: 117° 10.5' W (-117.17503) The bench mark is a disk set flush on the South side of Broadway Pier next to a fire hydrant, 27.3 m (89.6 ft) West of theSE corner of cruiseliner terminal building, 12.1 m (39.7 ft) East of the South gate, and 9.8 m (32.2 ft) South of the men's room on ths south side of the cruiseliner terminal building.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 7 of 10 Station ID: 9410170 PUBLICATION DATE: 09/20/2017 Name: SAN DIEGO, SAN DIEGO BAY CA NOAA Chart: 18772 Latitude: 32° 42.9' N ( 32.71419) USGS Quad: POINT LOMA Longitude: 117° 10.4' W (-117.17358) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 0170 AH 2017 DESIGNATION: 941 0170 AH MONUMENTATION: Tidal Station disk VM#: 22300 AGENCY: National Ocean Service (NOS) IDB PID#: SETTING CLASSIFICATION: Concrete pier OPUS PID: LATITUDE: 32° 42.9' N ( 32.71556) LONGITUDE: 117° 10.6' W (-117.17661) The bench mark is a disk set flush on the SW corner of Broadway Pier, 32.5 m (106.6 ft) West of the SW corner of cruiseliner terminal building, 19.3 m (63.3 ft) South 0f the temporary tide gauge enclosure, and 7.3 m (24.0 ft) East of the SW corner of the Broadway Pier.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 8 of 10 Station ID: 9410170 PUBLICATION DATE: 09/20/2017 Name: SAN DIEGO, SAN DIEGO BAY CA NOAA Chart: 18772 Latitude: 32° 42.9' N ( 32.71419) USGS Quad: POINT LOMA Longitude: 117° 10.4' W (-117.17358) T I D A L D A T U M S Tidal datums at SAN DIEGO, SAN DIEGO BAY based on: LENGTH OF SERIES: 19 YEARS TIME PERIOD: January 1983 - December 2001 TIDAL EPOCH: 1983-2001 CONTROL TIDE STATION: Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS: HIGHEST OBSERVED WATER LEVEL (11/25/2015) = 2.511 MEAN HIGHER HIGH WATER MHHW = 1.745 MEAN HIGH WATER MHW = 1.519 MEAN TIDE LEVEL MTL = 0.902 MEAN SEA LEVEL MSL = 0.896 MEAN LOW WATER MLW = 0.285 North American Vertical Datum NAVD88 = 0.132 MEAN LOWER LOW WATER MLLW = 0.000 LOWEST OBSERVED WATER LEVEL (12/17/1937) = -0.942 North American Vertical Datum (NAVD88) Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW 12 1926 5.170 3.650 0170 T 1991 3.160 1.640 0170 V 1991 2.924 1.405 0170 X 2009 4.373 2.854 0170 AA 2015 4.433 2.914 0170 AB 2015 3.461 1.941 0170 AC 2015 3.010 1.490 0170 AD 2015 4.235 2.716 0170 AE 2015 3.978 2.459 0170 AF 2015 4.391 2.872 0170 AG 2017 3.958 2.438 0170 AH 2017 4.127 2.607
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 9 of 10 Station ID: 9410170 PUBLICATION DATE: 09/20/2017 Name: SAN DIEGO, SAN DIEGO BAY CA NOAA Chart: 18772 Latitude: 32° 42.9' N ( 32.71419) USGS Quad: POINT LOMA Longitude: 117° 10.4' W (-117.17358) Foot Notes: Bench marks 0170 AG 2017 and 0170 AH 2017 are based on one differential leveling connection and do not meet the quality control standards of the NOS. Therefore, caution should be used when deriving elevations for these marks.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 10 of 10 Station ID: 9410170 PUBLICATION DATE: 09/20/2017 Name: SAN DIEGO, SAN DIEGO BAY CA NOAA Chart: 18772 Latitude: 32° 42.9' N ( 32.71419) USGS Quad: POINT LOMA Longitude: 117° 10.4' W (-117.17358) 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.