U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 9 Station ID: 8725520 PUBLICATION DATE: 04/21/2003 Name: FORT MYERS, CALOOSAHATCHEE RIVER FL NOAA Chart: 11426 Latitude: 26° 38.8' N ( 26.64670) USGS Quad: FORT MYERS Longitude: 81° 52.3' W ( -81.87170) To reach the tidal bench marks from the Fort Myers Post Office (33902), proceed north along Monroe Street, then turn east on Edwards Drive to the intersection with Hendry Street, then north on Hendry Street to Caloosahatchee River. The bench marks are in the vicinity between Main Street and the river. The tide gage and staff are located in the City of Fort Myers Yacht Basin on the west side of the west Basin entrance, at the foot of Hendry Street. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: 5520 A 1978 DESIGNATION: 872 5520 A TIDAL MONUMENTATION: Tidal Station disk VM#: 737 AGENCY: National Ocean Survey (NOS) IDB PID#: AD7888 SETTING CLASSIFICATION: Retaining wall OPUS PID#: AD7888 LATITUDE: 26° 38.8' N ( 26.64633) LONGITUDE: 81° 52.2' W ( -81.87058) The primary bench mark is a disk set in top of a concrete bulkhead or retaining wall, at the SW corner of the Yacht Basin of the City of Fort Myers, 26.49 m (86.9 ft) north of the north curb of Edwards Drive, 23.29 m (76.4 ft) east of the east edge of Hendry Street, 3.70 m (12.1 ft) SW of the NE corner of a wooden walkway around the basin, and 2.71 m (8.9 ft) NE of a corner point of the concrete fence/wall of the Yacht Basin.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 9 Station ID: 8725520 PUBLICATION DATE: 04/21/2003 Name: FORT MYERS, CALOOSAHATCHEE RIVER FL NOAA Chart: 11426 Latitude: 26° 38.8' N ( 26.64670) USGS Quad: FORT MYERS Longitude: 81° 52.3' W ( -81.87170) T I D A L B E N C H M A R K S BENCH MARK STAMPING: V 37 FORT MYERS 1932 11.460 DESIGNATION: V 37 MONUMENTATION: Bench Mark disk VM#: 734 AGENCY: US Coast and Geodetic Survey (USC&GS) IDB PID#: AD1434 SETTING CLASSIFICATION: Concrete balustrade OPUS PID: LATITUDE: 26° 38.5' N ( 26.64244) LONGITUDE: 81° 52.2' W ( -81.87036) The bench mark is a disk set vertically in the NW face of the SW balustrade of the NW entrance of the County Courthouse, 36.70 m (120.4 ft) NE of the centerline of the northbound lanes of Monroe Street, 34.69 m (113.8 ft) SE of the centerline of Main Street, 9.69 m (31.8 ft) SW of the center of the entrance, 0.21 m (0.7 ft) NE of the SW corner of the balustrade, and 0.3 m (1 ft) above ground level.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 9 Station ID: 8725520 PUBLICATION DATE: 04/21/2003 Name: FORT MYERS, CALOOSAHATCHEE RIVER FL NOAA Chart: 11426 Latitude: 26° 38.8' N ( 26.64670) USGS Quad: FORT MYERS Longitude: 81° 52.3' W ( -81.87170) T I D A L B E N C H M A R K S BENCH MARK STAMPING: G 246 1965 DESIGNATION: G 246 MONUMENTATION: Bench Mark disk VM#: 735 AGENCY: US Coast and Geodetic Survey (USC&GS) IDB PID#: AD1433 SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID: LATITUDE: 26° 38.6' N ( 26.64272) LONGITUDE: 81° 52.2' W ( -81.87008) The bench mark is a disk set in a flower bed in the north corner of the lawn at the County Courthouse, 21.79 m (71.5 ft) SE of the center of Main Street, 20.39 m (66.9 ft) north of the NE corner of the building, 15.21 m (49.9 ft) SW of the centerline of Broadway, 4.69 m (15.4 ft) south of the SE corner of a memorial monument (World War I American Legion), 1.71 m (5.6 ft) NE of the NE edge of a sidewalk, 0.70 m (2.3 ft) SE of the SE edge of a sidewalk, and 0.3 m (1 ft) above the level of the streets. The bench mark is crimped to the top of a copper-clad steel rod driven 22.3 m (73 ft) to refusal, and encased inside a PVC pipe and concrete kickblock. NOTE: the disk has been hit and is bent down along the NW edge. BENCH MARK STAMPING: 5520 B 1978 DESIGNATION: 872 5520 B TIDAL MONUMENTATION: Tidal Station disk VM#: 738 AGENCY: National Ocean Survey (NOS) IDB PID#: AD8306 SETTING CLASSIFICATION: Retaining wall OPUS PID: LATITUDE: 26° 38.8' N ( 26.64689) LONGITUDE: 81° 52.3' W ( -81.87117) The bench mark is a disk set in top of the SW concrete retaining wall at Slip Number C 10 of the City of Fort Myers Yacht Basin, 118.51 m (388.8 ft) NW of the center line of Edwards Drive, 11.70 m (38.4 ft) SE of the NW end of the wall, 8.90 m (29.2 ft) NE of the center of the northbound lanes of Hendry Street, 2.01 m (6.6 ft) NE of a guardrail, and level with the drive.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 9 Station ID: 8725520 PUBLICATION DATE: 04/21/2003 Name: FORT MYERS, CALOOSAHATCHEE RIVER FL NOAA Chart: 11426 Latitude: 26° 38.8' N ( 26.64670) USGS Quad: FORT MYERS Longitude: 81° 52.3' W ( -81.87170) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 5520 F 1990 DESIGNATION: 872 5520 F TIDAL MONUMENTATION: Tidal Station disk VM#: 1783 AGENCY: National Ocean Service (NOS) IDB PID#: AD8309 SETTING CLASSIFICATION: Retaining wall OPUS PID: LATITUDE: 26° 38.7' N ( 26.64514) LONGITUDE: 81° 52.4' W ( -81.87294) The bench mark is a disk set in top of a concrete retaining wall on the NW edge of Riverside Park, 89 m (292 ft) NW of the centerline of Edwards Drive, 66.29 m (217.5 ft) SW of the NE end of the wall, 33.01 m (108.3 ft) west of the west end of a memorial monument (Buckingham and Page Army Air Fields), 18.90 m (62.0 ft) NW of the SW corner of a footing for a flag pole, 5.61 m (18.4 ft) NE of the extended centerline of the northbound lanes of Monroe Street, and 0.3 m (1 ft) above the level of the drive. BENCH MARK STAMPING: 5520 G 1990 DESIGNATION: 872 5520 G TIDAL MONUMENTATION: Tidal Station disk VM#: 1784 AGENCY: National Ocean Service (NOS) IDB PID#: AD8308 SETTING CLASSIFICATION: Boat ramp wall OPUS PID: LATITUDE: 26° 38.7' N ( 26.64500) LONGITUDE: 81° 52.4' W ( -81.87330) The bench mark is a disk set in top of a concrete retaining wall on the NW edge of Riverside Park, 93.79 m (307.7 ft) NW of the centerline of Edwards Drive, 72.39 (237.5 ft) NE of the extended centerline of the northbound lanes of Monroe Street, 37.89 m (124.3 ft) NE of the NE corner of a memorial monument (Buckingham and Page Army Air Fields), 10.09 m (33.1 ft) SW of the center of a boat ramp, and 0.3 m (1 ft) above the level of the drive.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 9 Station ID: 8725520 PUBLICATION DATE: 04/21/2003 Name: FORT MYERS, CALOOSAHATCHEE RIVER FL NOAA Chart: 11426 Latitude: 26° 38.8' N ( 26.64670) USGS Quad: FORT MYERS Longitude: 81° 52.3' W ( -81.87170) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 5520 H 1990 DESIGNATION: 872 5520 H TIDAL MONUMENTATION: Tidal Station disk VM#: 1785 AGENCY: National Ocean Service (NOS) IDB PID#: AD8307 SETTING CLASSIFICATION: Concrete retaining wall OPUS PID: LATITUDE: 26° 38.7' N ( 26.64492) LONGITUDE: 81° 52.4' W ( -81.87339) The bench mark is a disk set in top of a concrete retaining wall on the NW edge of Riverside Park, 60.41 m (198.2 ft) SW of the extended centerline of the northbound lanes of Monroe Street, 54.10 m (177.5 ft) NW of the centerline of Edwards Drive, 30.78 m (101.0 ft) NE of the center of a ramp leading to a fishing pier, 10.09 m (33.1 ft) SW of the center of a boat ramp, and 0.3 m (1 ft) above the level of the drive. BENCH MARK STAMPING: 5520 J 1997 DESIGNATION: 872 5520 J MONUMENTATION: Flange-encased Rod VM#: 13772 AGENCY: National Ocean Service (NOS) IDB PID#: SETTING CLASSIFICATION: Stainless steel rod in sleeve OPUS PID: LATITUDE: 26° 38.6' N ( 26.64306) LONGITUDE: 81° 52.4' W ( -81.87406) The bench mark is a flange-encased rod located in the center of Centennial Park, 70.25 m (230.5 ft) north of a fire hydrant at the south entrance of the Centennial Park, 41.85 m (137.3 ft) SE of the SE corner of the restroom and maintenance building in the west side of park, and 41.15 m (135.0 ft) west of the SE end of a brick wall that runs along the east side of the park. The datum point is the top of a stainless steel rod driven 17.3 m (57 ft) to refusal, and encased in a no-tox grease-filled sleeve inside a 5-inch NOS logo cap.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 6 of 9 Station ID: 8725520 PUBLICATION DATE: 04/21/2003 Name: FORT MYERS, CALOOSAHATCHEE RIVER FL NOAA Chart: 11426 Latitude: 26° 38.8' N ( 26.64670) USGS Quad: FORT MYERS Longitude: 81° 52.3' W ( -81.87170) T I D A L B E N C H M A R K S BENCH MARK STAMPING: B 242 1965 DESIGNATION: B 242 MONUMENTATION: Bench Mark disk VM#: 13773 AGENCY: US Coast and Geodetic Survey (USC&GS) IDB PID#: AD1431 SETTING CLASSIFICATION: Bridge pier OPUS PID: LATITUDE: 26° 38.5' N ( 26.64103) LONGITUDE: 81° 52.4' W ( -81.87269) The bench mark is a disk set vertically in the west face of the west one of the second row of bridge piers south from the north end of the overpass of U.S. Highway 41 over State Highway 867 (also known as McGregor Boulevard), 7.41 m (24.3 ft) NW of the centerline of the southbound lane of State Highway 867, 3.60 m (11.8 ft) west of the center of the overpass, and 0.79 m (2.6 ft) above ground level.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 7 of 9 Station ID: 8725520 PUBLICATION DATE: 04/21/2003 Name: FORT MYERS, CALOOSAHATCHEE RIVER FL NOAA Chart: 11426 Latitude: 26° 38.8' N ( 26.64670) USGS Quad: FORT MYERS Longitude: 81° 52.3' W ( -81.87170) T I D A L B E N C H M A R K S BENCH MARK STAMPING: X 415 1992 DESIGNATION: X 415 MONUMENTATION: Flange-encased Rod VM#: 13774 AGENCY: National Geodetic Survey (NGS) IDB PID#: AD8310 SETTING CLASSIFICATION: Stainless steel rod OPUS PID: LATITUDE: 26° 38.9' N ( 26.64830) LONGITUDE: 81° 51.8' W ( -81.86330) The bench mark is a flange-encased rod located at the intersection of First Street and Poinsetta Avenue, 43.80 m (143.7 ft) SW of the extended center of Poinsetta Avenue, 12.41 m (40.7 ft) NE of the center of the NE entrance to the Calusa Harbor Retirement Community, 6.10 m (20 ft) south of underground cable junction box No. 2635, 5.90 m (19.4 ft) north of the centerline of the street, and 0.49 m (1.6 ft) SE of a T-junction utility pole No. 5 5818 8820 09. The datum point is at ground level, being the top of a stainless steel rod driven 18.5 m (61 ft), and encased in a 5-inch PVC pipe with logo cap.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 8 of 9 Station ID: 8725520 PUBLICATION DATE: 04/21/2003 Name: FORT MYERS, CALOOSAHATCHEE RIVER FL NOAA Chart: 11426 Latitude: 26° 38.8' N ( 26.64670) USGS Quad: FORT MYERS Longitude: 81° 52.3' W ( -81.87170) T I D A L D A T U M S Tidal datums at FORT MYERS, CALOOSAHATCHEE RIVER based on: LENGTH OF SERIES: 18 Years TIME PERIOD: 1/1983-12/1996 ; 1/1998-12/2001 TIDAL EPOCH: 1983-2001 CONTROL TIDE STATION: Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS: HIGHEST OBSERVED WATER LEVEL (11/23/1988) = 1.439 MEAN HIGHER HIGH WATER MHHW = 0.401 MEAN HIGH WATER MHW = 0.335 North American Vertical Datum NAVD88 = 0.318 MEAN SEA LEVEL MSL = 0.193 MEAN TIDE LEVEL MTL = 0.191 MEAN LOW WATER MLW = 0.047 MEAN LOWER LOW WATER MLLW = 0.000 LOWEST OBSERVED WATER LEVEL (09/08/1965) = -0.872 North American Vertical Datum (NAVD88) Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW 5520 A 1978 1.417 1.082 V 37 FORT MYERS 1932 11.460 3.455 3.120 G 246 1965 2.858 2.523 5520 B 1978 1.389 1.054 5520 F 1990 1.457 1.122 5520 G 1990 1.174 0.839 5520 H 1990 1.464 1.129 5520 J 1997 1.737 1.402 B 242 1965 3.350 3.015 X 415 1992 1.044 0.709
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 9 of 9 Station ID: 8725520 PUBLICATION DATE: 04/21/2003 Name: FORT MYERS, CALOOSAHATCHEE RIVER FL NOAA Chart: 11426 Latitude: 26° 38.8' N ( 26.64670) USGS Quad: FORT MYERS Longitude: 81° 52.3' W ( -81.87170) 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.