U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 5 PUBLICATION DATE: 09/09/1987 Station ID: 8722937 SUPERCEDED DATE: 04/21/2003 Name: ANDREWS AVENUE BRIDGE, NEW RIVER FLORIDA NOAA Chart: 11470 Latitude: 26° 7.1' N USGS Quad: FORT LAUDERDALE SOUTH Longitude: 80° 8.7' W To reach the tidal bench marks from the intersection of Interstate 95 and Broward Blvd. in Fort Lauderdale, proceed east on Broward Blvd. for 1.6 miles (2.6 km) to Andrews Avenue, go south on Andrews Avenue for 0.2 mile (0.3 km) to the Andrew Avenue bridge over New River. The bench marks are located along New River. The tide gage and staff were located SW of the bridge in the Rodi Boat Company yard near the railroad bridge. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: NO 4 1952 MONUMENTATION: Survey Disk VM#: 5688 AGENCY: PID#: AD2489 SETTING CLASSIFICATION: Seawall The bench mark is set flush in the west side seawall of the SE Third Avenue Bridge, just north of the Dresden Apartment building, 28 feet (9 m) north of the centerline of South New River Drive East, 23 feet (7 m) south of the south river bank, 14 feet (4 m) east of the west side of the bridge, and 0.5 foot (0.2 m) above South New River Drive East. BENCH MARK STAMPING: T 235 1965 MONUMENTATION: Survey Disk VM#: 5689 AGENCY: PID#: AD2490 SETTING CLASSIFICATION: Concrete Bulkhead The bench is set flush in the NE concrete bulkhead of the Andrews Avenue bridge, 69 feet (21 m) east of the centerline of South Andrews Avenue, 20 feet (6 m) east of the east end of the steps leading to the bridge sidewalk, 12.5 feet (3.8 m) south of the south curb of North New River Drive, and 0.5 foot (0.2 m) above the sidewalk level.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 5 PUBLICATION DATE: 09/09/1987 Station ID: 8722937 SUPERCEDED DATE: 04/21/2003 Name: ANDREWS AVENUE BRIDGE, NEW RIVER FLORIDA NOAA Chart: 11470 Latitude: 26° 7.1' N USGS Quad: FORT LAUDERDALE SOUTH Longitude: 80° 8.7' W T I D A L B E N C H M A R K S BENCH MARK STAMPING: Z 315 1970 MONUMENTATION: Survey Disk VM#: 5690 AGENCY: PID#: AD2491 SETTING CLASSIFICATION: Concrete Bulkhead The bench mark is set in the top of a concrete seawall near the SE end of the Andrews Avenue bridge, 60.0 feet (18.3 m) east of the centerline of South Andrews Avenue, 34.8 feet (10.6 m) north of the centerline of South New River Drive, and 9.8 feet (3.0 m) east of the east end of the steps to the bridge. BENCH MARK STAMPING: Z 315X 1970 MONUMENTATION: Survey Disk VM#: 5691 AGENCY: PID#: AD2493 SETTING CLASSIFICATION: Concrete Sidewalk The bench mark is set in the concrete sidewalk at the NW end of the Andrews Avenue bridge, 48 feet (15 m) south of the centerline of North New River Drive, 27.7 feet (8.4 m) west of the centerline of South Andrews Avenue, 18.5 feet (5.6 m) north of the north edge of the drawspan, 1 foot (0.3 m) east of the west bridge bannister, and 1 foot (0.3 m) above the road surface. BENCH MARK STAMPING: 2937 F 1981 MONUMENTATION: Survey Disk VM#: 5692 AGENCY: PID#: AD5867 SETTING CLASSIFICATION: Bridge Foundation The bench mark is set flush in the Andrews Avenue bridge foundation, 185 feet (56 m) west of Bench Mark 2937 G 1981, 31.4 feet (9.6 m) east of the west end of a bulkhead, 25.4 feet (7.7 m) north of the centerline of South New River Drive East, 3.7 feet (1.1 m) north of the SW corner of a bridge support, and 0.4 foot (0.1 m) west of the west side of the bridge support on the south side of the river.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 5 PUBLICATION DATE: 09/09/1987 Station ID: 8722937 SUPERCEDED DATE: 04/21/2003 Name: ANDREWS AVENUE BRIDGE, NEW RIVER FLORIDA NOAA Chart: 11470 Latitude: 26° 7.1' N USGS Quad: FORT LAUDERDALE SOUTH Longitude: 80° 8.7' W T I D A L B E N C H M A R K S BENCH MARK STAMPING: 2937 G 1981 MONUMENTATION: Survey Disk VM#: 5693 AGENCY: PID#: AD5868 SETTING CLASSIFICATION: Concrete Foundation The bench mark is set flush in a concrete foundation for a utility box, 140.5 feet (42.8 m) SE of the SE corner of the bridge support on the south side of the river, 26.2 feet (8.0 m) NE of the centerline of South New River Drive East, 6.2 feet (1.9 m) SW of a seawall and the waters edge, and 3.7 feet (1.1 m) NW of the SW corner of the utility box. BENCH MARK STAMPING: 2937 H 1981 MONUMENTATION: Survey Disk VM#: 5694 AGENCY: PID#: AD5869 SETTING CLASSIFICATION: Stainless Steel Rod in Sleeve The bench mark is 416 feet (127 m) SE of the SE corner of the Andrews Avenue bridge support on the south side of New River, 275.6 feet (84.0 m) SE of Bench Mark 2937 G 1981, 27.5 feet (8.4 m) NE of the centerline of South New River Drive East, 26.8 feet (8.2 m) NW of the SW edge of a utility box, and 6.0 feet (1.8 m) SW of a seawall and the waters edge. The bench mark is the highest point of a stainless steel rod in sleeve surrounded by a pipe with stamped access cover.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 5 PUBLICATION DATE: 09/09/1987 Station ID: 8722937 SUPERCEDED DATE: 04/21/2003 Name: ANDREWS AVENUE BRIDGE, NEW RIVER FLORIDA NOAA Chart: 11470 Latitude: 26° 7.1' N USGS Quad: FORT LAUDERDALE SOUTH Longitude: 80° 8.7' W T I D A L D A T U M S Tidal datums at ANDREWS AVENUE BRIDGE, NEW RIVER based on: LENGTH OF SERIES: 12 MONTHS TIME PERIOD: MAY 1970-APRIL 1971 TIDAL EPOCH: 1960-1978 CONTROL TIDE STATION: 8723170 MIAMI BEACH Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in FEET: HIGHEST OBSERVED WATER LEVEL (10/14/1970) = 3.56 MEAN HIGHER HIGH WATER MHHW = 2.39 MEAN HIGH WATER MHW = 2.28 MEAN TIDE LEVEL MTL = 1.22 * NATIONAL GEODETIC VERTICAL DATUM NGVD29 = 0.57 MEAN LOW WATER MLW = 0.15 MEAN LOWER LOW WATER MLLW = 0.00 LOWEST OBSERVED WATER LEVEL (04/26/1971) = -0.87 * NGVD is based on elevations published in Quad 260802, March 1972 and NOS leveling of 1981. North American Vertical Datum (NAVD88) Bench Mark Elevation Information In FEET above: Stamping or Designation MLLW MHW NO 4 1952 5.41 3.13 T 235 1965 5.58 3.30 Z 315 1970 5.60 3.32 Z 315X 1970 12.16 9.88 2937 F 1981 5.65 3.37 2937 G 1981 5.70 3.42 2937 H 1981 4.65 2.37
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 5 PUBLICATION DATE: 09/09/1987 Station ID: 8722937 SUPERCEDED DATE: 04/21/2003 Name: ANDREWS AVENUE BRIDGE, NEW RIVER FLORIDA NOAA Chart: 11470 Latitude: 26° 7.1' N USGS Quad: FORT LAUDERDALE SOUTH Longitude: 80° 8.7' 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.