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Bench Mark Sheet for 8720217, MONCRIEF CREEK ENTRANCE 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Superseded Epoch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Small blue map location marker Unpublished bench mark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  8

                                                                                
Station ID: 8720217                         PUBLICATION DATE:  11/20/2009
Name:       MONCRIEF CREEK ENTRANCE                           
            FL
NOAA Chart: 11491                           Latitude:   30° 23.5' N (  30.39170)
USGS Quad:  TROUT RIVER                     Longitude:  81° 39.7' W ( -81.66170)


To reach the tidal bench marks from the intersection of US Highway 17 (North
Main Street) and Florida Route 111 (Tallulah/Edgewood Avenue), proceed NW 1.8 km
(1.1 mi) on Tallulah Avenue to the NW end of the bridge over Moncrief Creek. 
The bench marks are on the bridge and in the vicinity of the north bank of
Moncrief Creek and Interstate 95.  The tide gage was located 14.0 m (46.0 ft)
SSE of the north bank of Moncrief Creek, at the end of a series of four catwalks
over an abandoned steel bridge foundation.  The tide staff was 5.0 m (16.0 ft)
NW of the tide gage.


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


                 PRIMARY BENCH MARK STAMPING:  0217 A 1977
                         DESIGNATION:          872 0217 A TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:        10702
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  BC1464
SETTING CLASSIFICATION:  Copper-clad steel rod                 OPUS PID:        
LATITUDE:   30° 23.5' N (  30.39111)          LONGITUDE:  81° 39.8' W ( -81.66361)


The primary bench mark is a disk located 32.3 m (106.0 ft) SE of the centerline
of Merle Drive, 6.7 m (22.0 ft) NW of a concrete power pole No. 539 JEA 090115,
8.0 m (26.0 ft) NE of the centerline of the westbound lane of Edgewood Avenue,
and 1.5 m (5.0 ft) SW of a large wooden power pole and 0.8 m (2.5 ft) NE of the
back edge of a 1.5 m (5.0 ft) concrete sidewalk.  The bench mark is set 0.2 m
(0.8 ft) SW of a carsonite witness post, crimped to the top of a copper-clad
steel rod, driven 10.1 m (33.0 ft) to substantial resistance and encased in a
concrete kickblock.        

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  2 of  8

                                                                                
Station ID: 8720217                         PUBLICATION DATE:  11/20/2009
Name:       MONCRIEF CREEK ENTRANCE                           
            FL
NOAA Chart: 11491                           Latitude:   30° 23.5' N (  30.39170)
USGS Quad:  TROUT RIVER                     Longitude:  81° 39.7' W ( -81.66170)


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


                         BENCH MARK STAMPING:  I95 72 A31 RM1
                         DESIGNATION:          I95 72 A31 RM NO 1

MONUMENTATION:           Survey disk                           VM#:        10704
AGENCY:                  Florida Department of Transportation
                         (FLDOT)                               IDB PID#:  BC1250
SETTING CLASSIFICATION:  Concrete guardrail                    OPUS PID:        
LATITUDE:   30° 23.5' N (  30.39250)          LONGITUDE:  81° 40.1' W ( -81.66778)


The bench mark is a disk set in the top of the concrete guardrail located at the
NW corner of the northbound bridge of Interstate 95 over Edgewood Avenue, and
5.1 m (16.6 ft) west of the centerline of the two northbound lanes of Interstate
95.     

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  3 of  8

                                                                                
Station ID: 8720217                         PUBLICATION DATE:  11/20/2009
Name:       MONCRIEF CREEK ENTRANCE                           
            FL
NOAA Chart: 11491                           Latitude:   30° 23.5' N (  30.39170)
USGS Quad:  TROUT RIVER                     Longitude:  81° 39.7' W ( -81.66170)


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


                         BENCH MARK STAMPING:  I95 72 A31 RM2
                         DESIGNATION:          I95 72 A31 RM 2

MONUMENTATION:           Tidal Station disk                    VM#:        10705
AGENCY:                  Florida Department of Transportation
                         (FLDOT)                               IDB PID#:  BC1251
SETTING CLASSIFICATION:  Concrete guardrail                    OPUS PID:        
LATITUDE:   30° 23.5' N (  30.39250)          LONGITUDE:  81° 40.1' W ( -81.66778)


The bench mark is a disk set in a drill hole in the top of a concrete guardrail.
at the NE corner of the southbound bridge of Interstate 95 over Edgewood Avenue,
and 5.4 m (17.6 ft) east of the centerline of the two southbound lanes of
Interstate 95.  T  

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  4 of  8

                                                                                
Station ID: 8720217                         PUBLICATION DATE:  11/20/2009
Name:       MONCRIEF CREEK ENTRANCE                           
            FL
NOAA Chart: 11491                           Latitude:   30° 23.5' N (  30.39170)
USGS Quad:  TROUT RIVER                     Longitude:  81° 39.7' W ( -81.66170)


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


                         BENCH MARK STAMPING:  I95 G7
                         DESIGNATION:          I95 G 7

MONUMENTATION:           Tidal Station disk                    VM#:        10706
AGENCY:                  Florida Department of Transportation
                         (FLDOT)                               IDB PID#:  BC1256
SETTING CLASSIFICATION:  Concrete curb (sidewalk)              OPUS PID#: BC1256
LATITUDE:   30° 23.4' N (  30.39028)          LONGITUDE:  81° 39.8' W ( -81.66361)


The bench mark is a disk set in the concrete curb (sidewalk), at the west side
of Moncrief Creek at the NW corner of the Tallulah Avenue bridge on the south
side of the roadway, 5.7 m (18.7 ft) SW of the centerline of the eastbound lanes
of State Road 111, 1.8 m (6.0 ft) NE of the SW end of the concrete bridge curb,
1.2 m (4.0 ft) SW of the edge of the curb, and 0.2 m (0.5 ft) NW of the edge of
the bridge span.    

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  5 of  8

                                                                                
Station ID: 8720217                         PUBLICATION DATE:  11/20/2009
Name:       MONCRIEF CREEK ENTRANCE                           
            FL
NOAA Chart: 11491                           Latitude:   30° 23.5' N (  30.39170)
USGS Quad:  TROUT RIVER                     Longitude:  81° 39.7' W ( -81.66170)


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


                         BENCH MARK STAMPING:  I95 H7
                         DESIGNATION:          I95 H 7

MONUMENTATION:           Tidal Station disk                    VM#:        10707
AGENCY:                  Florida Department of Transportation
                         (FLDOT)                               IDB PID#:  BC1257
SETTING CLASSIFICATION:  Concrete curb (sidewalk)              OPUS PID:        
LATITUDE:   30° 23.4' N (  30.38972)          LONGITUDE:  81° 39.7' W ( -81.66194)


The bench mark is a disk set in the concrete curb (sidewalk), at the east side
of Moncrief Creek at the SE corner of the Tallulah Avenue bridge on the north
side of the roadway; 5.8 m (19.0 ft) NE of centerline of state road 111
westbound lane, 1.8 m (6.0 ft) NW of the NE end of concrete bridge curb, and 1.2
m (4.0 ft) NE of the curb edge.    

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  6 of  8

                                                                                
Station ID: 8720217                         PUBLICATION DATE:  11/20/2009
Name:       MONCRIEF CREEK ENTRANCE                           
            FL
NOAA Chart: 11491                           Latitude:   30° 23.5' N (  30.39170)
USGS Quad:  TROUT RIVER                     Longitude:  81° 39.7' W ( -81.66170)


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


                         BENCH MARK STAMPING:  V2 V2 17.457
                         DESIGNATION:          V 2

MONUMENTATION:           Tidal Station disk                    VM#:        19284
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  BC0269
SETTING CLASSIFICATION:  Concrete post                         OPUS PID:        
LATITUDE:   30° 23.2' N (  30.38639)          LONGITUDE:  81° 38.8' W ( -81.64722)


The benchmark is a disk set in a concrete post located in Jacksonville, at the
intersection of Oakwood and East 65th Streets, 17.6 m (57.7 ft) west of the
center of Oakwood Street, 17.2 m (56.4 ft) east of the near rail of the CSX
transportation railroad, 16.8 m (55.0 ft) SW of the SE corner of the house, 10.0
m (32.8 ft) north of the centerline of East 65th Street, 2.3 m (7.5 ft) north of
a chain-link fence, 0.2 m (0.7 ft) east of a chain-link fence, and the monument
projects 0.1 m (0.3 ft) above the ground surface, flush with the ground.  NOTE: 
The monument is on property owned by Irene Eason, 7508 Oakwood Street,
Jacksonville, FL 32208.  

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  7 of  8

                                                                                
Station ID: 8720217                         PUBLICATION DATE:  11/20/2009
Name:       MONCRIEF CREEK ENTRANCE                           
            FL
NOAA Chart: 11491                           Latitude:   30° 23.5' N (  30.39170)
USGS Quad:  TROUT RIVER                     Longitude:  81° 39.7' W ( -81.66170)


                            T I D A L   D A T U M S 


Tidal datums at MONCRIEF CREEK ENTRANCE based on:

     LENGTH OF SERIES:      2 MONTHS
     TIME PERIOD:           October 1977 - November 1977
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  8720220 MAYPORT (FERRY DEPOT), SAINT JOHNS RIVER


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

     MEAN HIGHER HIGH WATER                     MHHW   =  0.829
     MEAN HIGH WATER                            MHW    =  0.790
     North American Vertical Datum              NAVD88 =  0.512
     MEAN TIDE LEVEL                            MTL    =  0.408
     MEAN SEA LEVEL                             MSL    =  0.403
     MEAN LOW WATER                             MLW    =  0.025
     MEAN LOWER LOW WATER                       MLLW   =  0.000

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     0217 A 1977                                 2.529    1.739
     I95 72 A31 RM1                             11.055   10.265
     I95 72 A31 RM2                             11.060   10.270
     I95 G7                                      3.833    3.043
     I95 H7                                      6.320    5.530
     V2 V2 17.457                                5.423    4.633


Foot Notes:

Geodetic heights of the bench marks meet all NOAA/NOS/NGS quality control
standards for Second Order, Class 1 leveling.  It is advised that a confirmation
set of levels be established for bench mark V2 V2 17.457 to verify height
differences before using tidal bench mark elevation information.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  8 of  8

                                                                                
Station ID: 8720217                         PUBLICATION DATE:  11/20/2009
Name:       MONCRIEF CREEK ENTRANCE                           
            FL
NOAA Chart: 11491                           Latitude:   30° 23.5' N (  30.39170)
USGS Quad:  TROUT RIVER                     Longitude:  81° 39.7' W ( -81.66170)


                             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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Revised: 08/08/2018
NOAA / National Ocean Service
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