U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 10 Station ID: 8728690 PUBLICATION DATE: 12/19/2018 Name: APALACHICOLA, APALACHICOLA RIVER FL NOAA Chart: 11401 Latitude: 29° 43.6' N ( 29.72670) USGS Quad: APALACHICOLA Longitude: 84° 58.9' W ( -84.98170) To reach the tidal bench marks from the Post Office at the corner of Commerce and D Streets in Apalachicola, proceed north along D Street one block to Water Street, then NW along Water Street for 0.32 km (0.2 mi) to the U.S. Coast Guard Light Attendant Station. The bench marks are located throughout the city. The tide gauge is located on the west side of the Apalachicola Municipal dock. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: 14.124 NO 1 1933 DESIGNATION: 872 8690 TIDAL 1 MONUMENTATION: Tidal Station disk VM#: 767 AGENCY: US Coast and Geodetic Survey (USC&GS) IDB PID#: AS0240 SETTING CLASSIFICATION: Step OPUS PID: LATITUDE: 29° 43.6' N ( 29.72739) LONGITUDE: 84° 59.0' W ( -84.98331) The primary bench mark is a disk set flush in a concrete bannister on the NE corner of the steps at the main entrance to the Post Office, 17.68 m (58.01 ft) SE of the centerline of D Street, 14.33 m (47.01 ft) SW of the centerline of Commerce Street, 2.96 m (9.71 ft) SW of a flagpole, and 0.79 m (2.59 ft) above ground level. Note: The bench mark may be covered by a potted plant in a box.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 10 Station ID: 8728690 PUBLICATION DATE: 12/19/2018 Name: APALACHICOLA, APALACHICOLA RIVER FL NOAA Chart: 11401 Latitude: 29° 43.6' N ( 29.72670) USGS Quad: APALACHICOLA Longitude: 84° 58.9' W ( -84.98170) T I D A L B E N C H M A R K S BENCH MARK STAMPING: APALACHICOLA 1934 15.771 DESIGNATION: APALACHICOLA MONUMENTATION: Tidal Station disk VM#: 768 AGENCY: US Coast and Geodetic Survey (USC&GS) IDB PID#: AS0244 SETTING CLASSIFICATION: Concrete Base OPUS PID#: AS0244 LATITUDE: 29° 43.5' N ( 29.72556) LONGITUDE: 84° 59.1' W ( -84.98581) The bench mark is a disk set in the top of the south corner of the second step above ground of the concrete base of Gorrie Monument, in the north angle of the intersection of 6th Street and D Street, 30.90 m (101.38 ft) ENE ofthe centerline of 6th Street, 29.65 m (97.28 ft) WNW of the center of D Street, 25.25 m (82.84 ft) SE of the east corner of the Trinity Episcopal Church, and 0.38 m (1.25 ft) above the ground.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 10 Station ID: 8728690 PUBLICATION DATE: 12/19/2018 Name: APALACHICOLA, APALACHICOLA RIVER FL NOAA Chart: 11401 Latitude: 29° 43.6' N ( 29.72670) USGS Quad: APALACHICOLA Longitude: 84° 58.9' W ( -84.98170) T I D A L B E N C H M A R K S BENCH MARK STAMPING: J 45 1934 15.449 DESIGNATION: J 45 MONUMENTATION: Tidal Station disk VM#: 769 AGENCY: US Coast and Geodetic Survey (USC&GS) IDB PID#: AS0241 SETTING CLASSIFICATION: Step OPUS PID#: AS0241 LATITUDE: 29° 43.5' N ( 29.72567) LONGITUDE: 84° 59.0' W ( -84.98331) The bench mark is a disk set in top of the center of the third step from bottom of base of Marks Monument and on the SE side of the monument, in the SW angle of the intersection, west and across the street from the courthouse, 19.64 m (64.44 ft) south of the centerline of C street, 15.10 m (49.54 ft) SW of the center of U.S. Highway 98, and 0.85 m (2.79 ft) north of the south edge of the 3RD step of the monument. BENCH MARK STAMPING: NO 3 1974 DESIGNATION: 872 8690 TIDAL 3 MONUMENTATION: Bench Mark disk VM#: 771 AGENCY: National Ocean Survey (NOS) IDB PID#: AS0514 SETTING CLASSIFICATION: Sidewalk OPUS PID: LATITUDE: 29° 43.8' N ( 29.72947) LONGITUDE: 84° 59.1' W ( -84.98486) The bench mark is a disk set flush in the concrete steps of the front entrance to Wefings Marine Hardware, 47.2 m (154.9 ft) SW of bench mark NO 4 1974, 28.35 m (93.01 ft) WNW of utility pole 4/60/1/75, 16.10 m (52.82 ft) WNW of the centerline of F Street, and 10.05 m (32.97 ft) SW of the centerline of Water Street.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 10 Station ID: 8728690 PUBLICATION DATE: 12/19/2018 Name: APALACHICOLA, APALACHICOLA RIVER FL NOAA Chart: 11401 Latitude: 29° 43.6' N ( 29.72670) USGS Quad: APALACHICOLA Longitude: 84° 58.9' W ( -84.98170) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 8690 A 1978 DESIGNATION: 872 8690 A TIDAL MONUMENTATION: Bench Mark disk VM#: 773 AGENCY: National Ocean Survey (NOS) IDB PID: SETTING CLASSIFICATION: Stainless steel rod OPUS PID: LATITUDE: 29° 43.4' N ( 29.72333) LONGITUDE: 84° 59.0' W ( -84.98325) The bench mark is a disk set at the SW corner of Battery Park between two large live oak trees, 53.95 m (176.8 ft) SE of the centerline of Market Street, 51.8 m (169.9 ft) NW of the west corner of the boat basin, 34.44 m (112.99 ft) NNE of the centerline of Bay Avenue, 11.0 m (36.1ft) ENE of the centerline of 6th Street, and 0.09 m (0.3 ft) south of a witness post. The bench mark is crimped to the top of a stainless steel rod driven 8.53 m (27.9 ft), and encased in a 5-inch PVC pipe and concrete kick-block with an aluminum access LID. BENCH MARK STAMPING: 8690 B 1978 DESIGNATION: 872 8690 B MONUMENTATION: Bench Mark disk VM#: 774 AGENCY: National Ocean Survey (NOS) IDB PID#: DM4900 SETTING CLASSIFICATION: Stainless steel rod OPUS PID#: DM4900 LATITUDE: 29° 43.3' N ( 29.72164) LONGITUDE: 84° 59.1' W ( -84.98425) The bench mark is a disk located 4 m (13.1 ft) ESE of the center of the intersection of Bay Avenue and 8th Street, 4 m (13.1 ft) WNW of Utility Pole A51253, 2nd number 025257/107075), and 1.07 m (3.51 ft) SE of the south edge of Bay Avenue. The bench mark is crimped to a stainless steel rod driven 9.8 m (32.2 ft), and encased in a 5-inch PVC pipe and concrete kickblock with aluminum access LTD.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 10 Station ID: 8728690 PUBLICATION DATE: 12/19/2018 Name: APALACHICOLA, APALACHICOLA RIVER FL NOAA Chart: 11401 Latitude: 29° 43.6' N ( 29.72670) USGS Quad: APALACHICOLA Longitude: 84° 58.9' W ( -84.98170) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 8690 D 1983 DESIGNATION: 872 8690 D TIDAL MONUMENTATION: Bench Mark disk VM#: 775 AGENCY: National Ocean Survey (NOS) IDB PID: SETTING CLASSIFICATION: Step OPUS PID: LATITUDE: 29° 43.6' N ( 29.72608) LONGITUDE: 84° 58.9' W ( -84.98242) The bench mark is a disk set flush in the NW corner of the bottom of the north entrance to the Franklin County Courthouse, 57.15 m (187.50 ft) ENE of bench mark J 45 1934 15.449, 33.00 m (108.27 ft) ESE of the centerline of Highway 98/Market Street, 18.59 m (60.99 ft) east of the courthouse flag pole, 17.25 m (56.59 ft) south of the centerline of Leslie Street, and 2.59 m (8.50 ft) WSW of the centerline of the north entrance sidewalk to the courthouse. BENCH MARK STAMPING: 8690 E 1983 DESIGNATION: 872 8690 E TIDAL MONUMENTATION: Bench Mark disk VM#: 776 AGENCY: National Ocean Survey (NOS) IDB PID: SETTING CLASSIFICATION: Driveway OPUS PID: LATITUDE: 29° 43.7' N ( 29.72892) LONGITUDE: 84° 59.1' W ( -84.98428) The bench mark is a disk set flush in the concrete foundation lip of Apalachicola Volunteer Fire Department, in front of the second column north of the SE corner of the building, between two 1 m (3.28 ft) high and 0.09 m (0.30 ft) diameter steel pipes, 91.44 m (300.00 ft) SE of bench mark NO 3 1974, 75.29 m (247.01 ft) SE of the centerline of F Street, 49.38 m (162.01 ft) WSW of the SW shoreline of Apalachicola River, 10.50 m (34.45 ft) WSW of the centerline of Water Street, 4.63 m (15.19 ft) NW of the SE corner of the fire station, and 0.24 m (0.79 ft) NE of the NE face of the fire station.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 6 of 10 Station ID: 8728690 PUBLICATION DATE: 12/19/2018 Name: APALACHICOLA, APALACHICOLA RIVER FL NOAA Chart: 11401 Latitude: 29° 43.6' N ( 29.72670) USGS Quad: APALACHICOLA Longitude: 84° 58.9' W ( -84.98170) T I D A L B E N C H M A R K S BENCH MARK STAMPING: P 294 1967 DESIGNATION: P 294 MONUMENTATION: Bench Mark disk VM#: 19078 AGENCY: US Coast & Geodetic Survey (USC&GS) IDB PID#: AS0138 SETTING CLASSIFICATION: Concrete Monument OPUS PID: LATITUDE: 29° 44.1' N ( 29.73464) LONGITUDE: 85° 1.1' W ( -85.01858) The bench mark is a disk set in the top of a concrete post projecting 0.06 m (0.2 ft) above the level of the ground, 11.13 m (36.5 ft) SW of the center line of the highway, 8.53 m (28.0 ft) SE of a fence corner around a lot, 6.40 m (21.0 ft) NW of the center line of driveway, 0.40 m (1.3 ft) SE of a metal witness post, 0.30 m (1.0 ft) NE of a fence line, and 0.30 m (1.0 ft) above the level of the highway..
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 7 of 10 Station ID: 8728690 PUBLICATION DATE: 12/19/2018 Name: APALACHICOLA, APALACHICOLA RIVER FL NOAA Chart: 11401 Latitude: 29° 43.6' N ( 29.72670) USGS Quad: APALACHICOLA Longitude: 84° 58.9' W ( -84.98170) T I D A L B E N C H M A R K S BENCH MARK STAMPING: Q 294 1967 DESIGNATION: Q 294 MONUMENTATION: Bench Mark disk VM#: 19079 AGENCY: US Coast & Geodetic Survey (USC&GS) IDB PID#: AS0143 SETTING CLASSIFICATION: Concrete Monument OPUS PID: LATITUDE: 29° 43.9' N ( 29.73144) LONGITUDE: 85° 0.2' W ( -85.00339) The bench mark is a disk set in the top of a concrete post projecting 0.06 m (0.2 ft) above the level of the ground, 36.58 m (120.0 ft) NW of the center of the junction of 24th Avenue, near the junction of the west one of 4 driveways leading north into the Magnolia Cemetery, 9.75 m (32.0 ft) north of the center line of the highway, 4.42 m (14.5 ft) west of the center line of driveway, 0.46 m (1.5 ft) east of a metal witness post, and about level with the highway.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 8 of 10 Station ID: 8728690 PUBLICATION DATE: 12/19/2018 Name: APALACHICOLA, APALACHICOLA RIVER FL NOAA Chart: 11401 Latitude: 29° 43.6' N ( 29.72670) USGS Quad: APALACHICOLA Longitude: 84° 58.9' W ( -84.98170) T I D A L B E N C H M A R K S BENCH MARK STAMPING: D 689 2007 DESIGNATION: D 689 MONUMENTATION: Survey disk VM#: 19080 AGENCY: Florida Dept. of Environmental Protection (FLDEP) IDB PID#: DM4901 SETTING CLASSIFICATION: Concrete Culvert Head Wall OPUS PID: LATITUDE: 29° 43.4' N ( 29.72350) LONGITUDE: 84° 59.6' W ( -84.99378) The bench mark is a disk set flush in the top of the NE end of a concrete culvert headwall in the SE quadrant of the intersection located about 83.82 m (275.0 ft) SW of the centerline of 12th street, 11.70 m (38.4 ft) NE of the centerline of 13th street, 9.02 m (29.6 ft) SE of the centerline of Avenue H, 0.30 m 0.30 m (1.0 ft) below the level of Avenue H and 0.5 ft NW of a carsonite witness post. BENCH MARK STAMPING: 8690 F 2009 DESIGNATION: 872 8690 F MONUMENTATION: Metal Rod VM#: 19558 AGENCY: National Ocean Service (NOS) IDB PID: SETTING CLASSIFICATION: Stainless steel rod OPUS PID#: DO1545 LATITUDE: 29° 43.5' N ( 29.72439) LONGITUDE: 84° 58.9' W ( -84.98083) The bench mark is a metal rod set flush in a grassy area on the foot of the Municipal commercial pier is set 120.9 m (396.7 ft) NE of the east side of the public boat ramp, 55.8 m (183.1 ft) SE of the SE corner of the baseball field concession stand, 35.0 m (114.8 ft) WSW of the SW corner of the tidal station, 24.7 m (81.0 ft) ESE of water ST., 2.0 m (6.6 ft) NE of the NE corner of the city dock, and 1.0 m (3.28 ft) SE of a telephone pole. The datum point is set on top of a flange-encased rod, being the top of a stainless steel rod driven 27.3 m (89.57 ft) to refusal, and encased in a 5-inch NOS logo cap.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 9 of 10 Station ID: 8728690 PUBLICATION DATE: 12/19/2018 Name: APALACHICOLA, APALACHICOLA RIVER FL NOAA Chart: 11401 Latitude: 29° 43.6' N ( 29.72670) USGS Quad: APALACHICOLA Longitude: 84° 58.9' W ( -84.98170) T I D A L D A T U M S Tidal datums at APALACHICOLA, APALACHICOLA RIVER 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 (10/10/2018) = 2.845 MEAN HIGHER HIGH WATER MHHW = 0.492 MEAN HIGH WATER MHW = 0.461 MEAN TIDE LEVEL MTL = 0.291 MEAN SEA LEVEL MSL = 0.277 North American Vertical Datum NAVD88 = 0.232 MEAN LOW WATER MLW = 0.122 MEAN LOWER LOW WATER MLLW = 0.000 LOWEST OBSERVED WATER LEVEL (01/18/1981) = -0.560 North American Vertical Datum (NAVD88) Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW 14.124 NO 1 1933 4.362 3.902 APALACHICOLA 1934 15.771 4.869 4.408 J 45 1934 15.449 4.769 4.309 NO 3 1974 1.887 1.427 8690 A 1978 2.781 2.320 8690 B 1978 1.642 1.182 8690 D 1983 3.719 3.259 8690 E 1983 1.887 1.426 P 294 1967 4.030 3.570 Q 294 1967 5.396 4.936 D 689 2007 4.788 4.328 8690 F 2009 0.965 0.505
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 10 of 10 Station ID: 8728690 PUBLICATION DATE: 12/19/2018 Name: APALACHICOLA, APALACHICOLA RIVER FL NOAA Chart: 11401 Latitude: 29° 43.6' N ( 29.72670) USGS Quad: APALACHICOLA Longitude: 84° 58.9' W ( -84.98170) 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.