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.