Hampton Harbor, NH Tide Gauge

Tide gauge located in Hampton Harbor, NH. Funded by NERACOOS. Data is reported in elevation above MLLW (NAVD88) in feet and also converted to meters. NOAA uses Mean Lower Low Water (MLLW), which is the average height of the lowest tide recorded at a tide station each day during a 19-year recording period, known as the National Tidal Datum Epoch.[5] MLLW is only a mean, so some tidal levels may be negative relative to MLLW; see also mean low water spring. The 19-year recording period is the nearest full year count to the 18.6-year cycle of the lunar node regression, which has an effect on tides. At this location Mean Sea Level (MSL) is 1.308 meters above MLLW Benchmark used: NOAA Station ID: 8440452 - PLUM ISLAND, MERRIMACK RIVER ENTRANCE (with extrapolated estimate) MSL meters = (MLLW ft. * 0.3048) + GAUGE location correction.

Data and Resources

Field Value
access-constraints []
access_constraints []
aggregation-info [{"aggregate-dataset-name": "NERACOOS", "aggregate-dataset-identifier": "", "association-type": "largerWorkCitation", "initiative-type": "project", "responsible-party": []}, {"aggregate-dataset-name": "", "aggregate-dataset-identifier": "Point", "association-type": "largerWorkCitation", "initiative-type": "project", "responsible-party": []}]
bbox-east-long -70.8185
bbox-north-lat 42.9001
bbox-south-lat 42.9001
bbox-west-long -70.8185
cf_standard_names ["latitude", "longitude", "time"]
contact-email Francesco.Peri@umb.edu
coupled-resource [{"title": [], "href": ["#DataIdentification"], "uuid": []}, {"title": [], "href": ["#DataIdentification"], "uuid": []}]
creator_url http://hobolink.com
dataset-reference-date [{"type": "creation", "value": "2025-09-12"}, {"type": "creation", "value": "2025-09-12"}, {"type": "creation", "value": "2025-09-12"}]
distributor-formats []
distributor-info [{"distributor-contact": {"individual-name": "Ru Morrison", "organisation-name": "NERACOOS", "position-name": "", "contact-info": {"email": "info@neracoos.org", "online-resource": "", "phone": {"voice": "603-319-1785", "fax": ""}}, "role": "distributor"}, "data-format": {"name": "OPeNDAP", "version": "DAP/2.0"}, "transfer-options": [{"url": "http://www.neracoos.org/erddap/tabledap/ONSET_hamptonbay_hourly_water_level.html", "function": "download", "name": "Data Subset Form", "description": "ERDDAP's version of the OPeNDAP .html web page for this dataset. Specify a subset of the dataset and download the data via OPeNDAP or in many different file types.", "protocol": "order"}, {"url": "http://www.neracoos.org/erddap/tabledap/ONSET_hamptonbay_hourly_water_level.graph", "function": "mapDigital", "name": "Make-A-Graph Form", "description": "ERDDAP's Make-A-Graph .html web page for this dataset. Create an image with a map or graph of a subset of the data.", "protocol": "order"}]}]
encoding utf8
fees []
grouped_keywords [["Theme", [{"keywords": ["gauge", "hampton", "hobolink", "mean", "meter", "mllw", "msl", "onset", "sea", "station", "Temp", "temperature", "tide", "water level"], "anchors": [], "type": "theme", "thesaurus": {"title": "", "edition": ""}}, {"keywords": ["latitude", "longitude", "time"], "anchors": [], "type": "theme", "thesaurus": {"title": "CF Standard Name Table v29", "edition": ""}}]], ["Project", [{"keywords": ["NERACOOS"], "anchors": [], "type": "project", "thesaurus": {"title": "", "edition": ""}}]]]
guid ONSET_hamptonbay_hourly_water_level
harvest_url https://data.ioos.us/dataset/c7c2d88e-f59b-4f5f-8bff-ee206f7b36d8
infoUrl http://hobolink.com
licence ["The data may be used and redistributed for free but is not intended\nfor legal use, since it may contain inaccuracies. Neither the data\nContributor, ERD, NOAA, nor the United States Government, nor any\nof their employees or contractors, makes any warranty, express or\nimplied, including warranties of merchantability and fitness for a\nparticular purpose, or assumes any legal liability for the accuracy,\ncompleteness, or usefulness, of this information."]
lineage-process-steps []
metadata-date 2025-09-12
metadata-language eng
object_reference 2780b67a-b38a-445b-92ec-b576b097f6fe
publisher_phone (603) 319 1785
publisher_url http://www.neracoos.org
resource-type dataset
responsible-organisation [{"individual-name": "", "organisation-name": "Onset Hobolink", "position-name": "", "contact-info": {"email": "Francesco.Peri@umb.edu", "online-resource": {"url": "http://hobolink.com", "function": "information", "name": "Background Information", "description": "Background information from the source", "protocol": "information"}, "phone": ""}, "role": "pointOfContact"}, {"individual-name": "", "organisation-name": "Onset Hobolink", "position-name": "", "contact-info": {"email": "Francesco.Peri@umb.edu", "online-resource": {"url": "http://hobolink.com", "function": "information", "name": "Background Information", "description": "Background information from the source", "protocol": "information"}, "phone": ""}, "role": "originator"}, {"individual-name": "Ru Morrison", "organisation-name": "NERACOOS", "position-name": "", "contact-info": {"email": "info@neracoos.org", "online-resource": "", "phone": {"voice": "603-319-1785", "fax": ""}}, "role": "pointOfContact"}]
responsible-parties [{"individual-name": "", "organisation-name": "Onset Hobolink", "position-name": "", "contact-info": {"email": "Francesco.Peri@umb.edu", "online-resource": {"url": "http://hobolink.com", "function": "information", "name": "Background Information", "description": "Background information from the source", "protocol": "information"}, "phone": ""}, "role": "pointOfContact"}, {"individual-name": "", "organisation-name": "Onset Hobolink", "position-name": "", "contact-info": {"email": "Francesco.Peri@umb.edu", "online-resource": {"url": "http://hobolink.com", "function": "information", "name": "Background Information", "description": "Background information from the source", "protocol": "information"}, "phone": ""}, "role": "originator"}]
responsible-party [{"name": "Onset Hobolink", "roles": ["pointOfContact", "originator"]}, {"name": "NERACOOS", "roles": ["pointOfContact"]}]
spatial {"type": "Point", "coordinates": [-70.8185, 42.9001]}
spatial-data-service-type ERDDAP tabledap
spatial_harvester true
standard_name_vocabulary CF Standard Name Table v29
temporal-extent-begin 2019-09-25T17:00:00Z
temporal-extent-end 2023-09-17T12:00:00Z
use-constraints ["The data may be used and redistributed for free but is not intended\nfor legal use, since it may contain inaccuracies. Neither the data\nContributor, ERD, NOAA, nor the United States Government, nor any\nof their employees or contractors, makes any warranty, express or\nimplied, including warranties of merchantability and fitness for a\nparticular purpose, or assumes any legal liability for the accuracy,\ncompleteness, or usefulness, of this information."]
use-limitations ["The data may be used and redistributed for free but is not intended\nfor legal use, since it may contain inaccuracies. Neither the data\nContributor, ERD, NOAA, nor the United States Government, nor any\nof their employees or contractors, makes any warranty, express or\nimplied, including warranties of merchantability and fitness for a\nparticular purpose, or assumes any legal liability for the accuracy,\ncompleteness, or usefulness, of this information."]
waf_location http://www.neracoos.org/erddap/metadata/iso19115/xml/ONSET_hamptonbay_hourly_water_level_iso19115.xml
Groups
  • AmeriGEOSS
  • Regional Provider
Tags
  • AmeriGEOSS
  • CKAN
  • GEO
  • GEOSS
  • IOOS
  • NERACOOS
  • Oceans
  • Regional
  • Temp
  • gauge
  • hampton
  • hobolink
  • latitude
  • longitude
  • mean
  • meter
  • mllw
  • msl
  • onset
  • sea
  • station
  • temperature
  • tide
  • time
  • water level
isopen False
metadata_created 2025-09-19T00:17:58.845660
metadata_modified 2025-09-19T00:17:58.845669
notes Tide gauge located in Hampton Harbor, NH. Funded by NERACOOS. Data is reported in elevation above MLLW (NAVD88) in feet and also converted to meters. NOAA uses Mean Lower Low Water (MLLW), which is the average height of the lowest tide recorded at a tide station each day during a 19-year recording period, known as the National Tidal Datum Epoch.[5] MLLW is only a mean, so some tidal levels may be negative relative to MLLW; see also mean low water spring. The 19-year recording period is the nearest full year count to the 18.6-year cycle of the lunar node regression, which has an effect on tides. At this location Mean Sea Level (MSL) is 1.308 meters above MLLW Benchmark used: NOAA Station ID: 8440452 - PLUM ISLAND, MERRIMACK RIVER ENTRANCE (with extrapolated estimate) MSL meters = (MLLW ft. * 0.3048) + GAUGE location correction.
num_resources 5
num_tags 25
title Hampton Harbor, NH Tide Gauge