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Bench Mark Sheet for 8720357, I-295 Bridge, St Johns River FL

Superseded Epoch

Large map location marker Station Location
Small red map location marker Published bench mark
Small blue map location marker Unpublished bench mark

Bench mark positions only appear on the map if their coordinates in the CO-OPS database are at the precision of degrees/minutes/seconds/and tenths of seconds. If the coordinates are less precise, the mark will not appear.

Printable version

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
Datums Page                                                        Page  1 of  7

                                                                                
Station ID: 8720357                         PUBLICATION DATE:  08/29/2013
Name:       I-295 BRIDGE, WEST END, ST JOHNS RIVER            
            FL
NOAA Chart: 11492                           Latitude:   30° 11.5' N (  30.19170)
USGS Quad:  ORANGE PARK                     Longitude:  81° 41.5' W ( -81.69170)


To reach the tidal bench marks from the I-295 overpass over US Highway 17 north
of Orange Park, proceed 0.56 km (0.35 mi) north on Highway 17 to the junction of
US Highway 17 and Collins Road, turn right onto Collins Road and go east for 0.3
km (0.2 mi) to a 90 degree turn to the right, continue for 2.4 km (1.5 mi) to a
90 degree turn to the left, and continue on Collins Road for 1.1 km (0.7 mi) to
its intersection with Malaga Avenue, then go south on Malaga Avenue for 0.08 km
(0.05 mi) to the entrance of the Jacksonville Rudder Club on the left, then go
east for 0.08 km (0.05 mi) to the boat ramp and pier.  The bench marks are
located in the vicinity of the club and along Collins Avenue.  The tide gage was
located at the NE corner of the wooden pier at the club.


                         T I D A L   B E N C H   M A R K S


                 PRIMARY BENCH MARK STAMPING:  0357 C 1995
                         DESIGNATION:          872 0357 C

MONUMENTATION:           Tidal Station disk                    VM#:        13482
AGENCY:                  National Ocean Service (NOS)          IDB PID#:  DL5348
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   30° 11.6' N (  30.19297)          LONGITUDE:  81° 41.5' W ( -81.69211)


The bench mark is a disk set in top of a concrete monument at the entrance to
the Jacksonville Rudder Club, 21.95 m (72.0 ft) south of the approximate
centerline of the entrance drive, 7.80 m (25.6 ft) east of the approximate
centerline of Malaga Avenue, 3.41 m (11.2 ft) north of power pole No. 8539, 0.70
m (2.3 ft) west of a chainlink fence and witness post, and at ground level.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  2 of  7

                                                                                
Station ID: 8720357                         PUBLICATION DATE:  08/29/2013
Name:       I-295 BRIDGE, WEST END, ST JOHNS RIVER            
            FL
NOAA Chart: 11492                           Latitude:   30° 11.5' N (  30.19170)
USGS Quad:  ORANGE PARK                     Longitude:  81° 41.5' W ( -81.69170)


                         T I D A L   B E N C H   M A R K S


                         BENCH MARK STAMPING:  0357 B RESET 2010
                         DESIGNATION:          872 0357 B RESET

MONUMENTATION:           Metal Rod                             VM#:        13480
AGENCY:                  National Ocean Service (NOS)          IDB PID#:  DL5349
SETTING CLASSIFICATION:  Stainless steel rod                   OPUS PID#: DO9899
LATITUDE:   30° 11.9' N (  30.19830)          LONGITUDE:  81° 41.7' W ( -81.69500)


The primary bench mark is a metal rod set near the Jacksonville Rudder Club
pool, 34.75 m (114.0 ft) SSW of the approximate center of the boat ramp, 12.04 m
(39.5 ft) SE of the SE corner of the pool deck, 0.67 m (2.2 ft) north of the
south face of the retaining wall, and 0.61 m (2.0 ft) west of the east face of
the wall.  The datum point is set 9.1 cm (0.3 ft) below the level of the logo
cap, being the top of a stainless steel rod driven 7.1 m (23 ft) to refusal,
encased in a 5-inch logo cap which is set at ground level.



                         BENCH MARK STAMPING:  0357 A 1995
                         DESIGNATION:          872 0357 A

MONUMENTATION:           Metal Rod                             VM#:        13481
AGENCY:                  National Ocean Service (NOS)          IDB PID#:  DI9225
SETTING CLASSIFICATION:  Stainless steel rod                   OPUS PID#: DI9225
LATITUDE:   30° 11.6' N (  30.19317)          LONGITUDE:  81° 41.4' W ( -81.69036)


The bench mark is a metal rod set near the foot of the pier at the Jacksonville
Rudder Club, 29.44 m (96.6 ft) north of the approximate center of the boat ramp,
8.60 m (28.2 ft) north of the pier, 5.15 m (16.9 ft) east of the NE corner of a
tin shed, and 0.73 m (2.4 ft) SW of the NE corner of the bulkhead.  The datum
point is set 9.1 cm (0.3 ft) below the level of the logo cap, being the top of a
stainless steel rod driven 13.7 m (45.0 ft) to refusal, and encased in a 5-inch
logo cap which is set at ground level.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  3 of  7

                                                                                
Station ID: 8720357                         PUBLICATION DATE:  08/29/2013
Name:       I-295 BRIDGE, WEST END, ST JOHNS RIVER            
            FL
NOAA Chart: 11492                           Latitude:   30° 11.5' N (  30.19170)
USGS Quad:  ORANGE PARK                     Longitude:  81° 41.5' W ( -81.69170)


                         T I D A L   B E N C H   M A R K S


                         BENCH MARK STAMPING:  0357 D 1995
                         DESIGNATION:          872 0357 D

MONUMENTATION:           Tidal Station disk                    VM#:        13483
AGENCY:                  National Ocean Service (NOS)          IDB PID#:  DL5347
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   30° 11.6' N (  30.19347)          LONGITUDE:  81° 41.5' W ( -81.69208)


The bench mark is a disk set in top of a concrete monument at the intersection
of Collins Road and Malaga Avenue, 11.73 m (38.5 ft) south of the centerline of
Collins Road, 9.45 m (31.0 ft) south of the centerline of Malaga Avenue, 0.76 m
(2.5 ft) SW of the north corner of a chainlink fence, 0.46 m (1.5 ft) west of a
witness post, and at ground level.



                         BENCH MARK STAMPING:  0357 E 1995
                         DESIGNATION:          872 0357 E

MONUMENTATION:           Tidal Station disk                    VM#:        13484
AGENCY:                  National Ocean Service (NOS)          IDB PID#:  DL5346
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   30° 11.6' N (  30.19358)          LONGITUDE:  81° 41.8' W ( -81.69733)


The bench mark is a disk set in top of a concrete monument at the intersection
of Collins Road and New York Avenue, 6.61 m (21.7 ft) north of the centerline of
Collins Road, 5.15 (16.9 ft) west of the centerline of New York Avenue, 3.35 m
(11.0 ft) SE of a 30-inch diameter pine tree, 0.43 m (1.4 ft) south of a street
sign, and at ground level.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  4 of  7

                                                                                
Station ID: 8720357                         PUBLICATION DATE:  08/29/2013
Name:       I-295 BRIDGE, WEST END, ST JOHNS RIVER            
            FL
NOAA Chart: 11492                           Latitude:   30° 11.5' N (  30.19170)
USGS Quad:  ORANGE PARK                     Longitude:  81° 41.5' W ( -81.69170)


                         T I D A L   B E N C H   M A R K S


                         BENCH MARK STAMPING:  0357 F 1995
                         DESIGNATION:          872 0357 F

MONUMENTATION:           Tidal Station disk                    VM#:        13485
AGENCY:                  National Ocean Service (NOS)          IDB PID#:  DL5345
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   30° 11.6' N (  30.19325)          LONGITUDE:  81° 42.2' W ( -81.70372)


The bench mark is a disk set in top of a concrete monument at the corner of
Barcelona Avenue and Collins Road, 15.24 m (50.0 ft) SSE of the center point of
Collins Road and Barcelona Avenue, 2.90 m (9.5 ft) SW of a guardrail, 0.40 m
(1.3 ft) NE of a chainlink fence, 0.37 m (1.2 ft) NE of a witness post, and at
ground level.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  5 of  7

                                                                                
Station ID: 8720357                         PUBLICATION DATE:  08/29/2013
Name:       I-295 BRIDGE, WEST END, ST JOHNS RIVER            
            FL
NOAA Chart: 11492                           Latitude:   30° 11.5' N (  30.19170)
USGS Quad:  ORANGE PARK                     Longitude:  81° 41.5' W ( -81.69170)


                         T I D A L   B E N C H   M A R K S


                         BENCH MARK STAMPING:  K 422 1993
                         DESIGNATION:          K 422

MONUMENTATION:           Vertical Control disk                 VM#:        13487
AGENCY:                  National Geodetic Survey (NGS)        IDB PID#:  AC5771
SETTING CLASSIFICATION:  Bridge abutment                       OPUS PID:        
LATITUDE:   30° 11.5' N (  30.19170)          LONGITUDE:  81° 42.3' W ( -81.70500)


The bench mark is set vertically in the most northwesterly concrete pier under
I-295 and 1.6 m (5.3 ft) above the level of the ground, located 38.3 m (125.8
ft) southeast of a metal light pole with 4 lights attached, 1.9 m (6.3 ft) west
of the west concrete curb of the southbound lanes of U.S Highway 17, and 6.5 m
(21.2 ft) north of the nearest southerly concrete pier.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  6 of  7

                                                                                
Station ID: 8720357                         PUBLICATION DATE:  08/29/2013
Name:       I-295 BRIDGE, WEST END, ST JOHNS RIVER            
            FL
NOAA Chart: 11492                           Latitude:   30° 11.5' N (  30.19170)
USGS Quad:  ORANGE PARK                     Longitude:  81° 41.5' W ( -81.69170)


                            T I D A L   D A T U M S 


Tidal datums at I-295 BRIDGE, WEST END, ST JOHNS RIVER based on:

     LENGTH OF SERIES:      5 YEARS
     TIME PERIOD:           2/2004-1/2006, 7/2006-6/2007, & 7/2008-6/2010
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  8720218 BAR PILOTS DOCK, ST JOHNS RIVER


Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:

     HIGHEST OBSERVED WATER LEVEL (09/27/2004)         =  1.364
     MEAN HIGHER HIGH WATER                     MHHW   =  0.310
     MEAN HIGH WATER                            MHW    =  0.300
     North American Vertical Datum              NAVD88 =  0.198
     MEAN TIDE LEVEL                            MTL    =  0.166
     MEAN SEA LEVEL                             MSL    =  0.163
     MEAN LOW WATER                             MLW    =  0.030
     MEAN LOWER LOW WATER                       MLLW   =  0.000
     LOWEST  OBSERVED WATER LEVEL (01/09/2009)         = -0.495

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     0357 C 1995                                 4.820    4.520
     0357 B RESET 2010                           0.858    0.558
     0357 A 1995                                 0.861    0.561
     0357 D 1995                                 4.668    4.368
     0357 E 1995                                 5.585    5.285
     0357 F 1995                                 7.647    7.347
     K 422 1993                                 10.295    9.995


                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  7 of  7

                                                                                
Station ID: 8720357                         PUBLICATION DATE:  08/29/2013
Name:       I-295 BRIDGE, WEST END, ST JOHNS RIVER            
            FL
NOAA Chart: 11492                           Latitude:   30° 11.5' N (  30.19170)
USGS Quad:  ORANGE PARK                     Longitude:  81° 41.5' W ( -81.69170)


                             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.

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Products available at 8720357 I-295 Bridge, St Johns River, FL

Revised: 10/15/2013
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services