Data Access Form

Dataset Title:	CreamT flood web service: [Penzance_1A] NRT river water level Penzance Alverton 48188
Institution:	UK Environment Agency (Dataset ID: ea_river_level_48188_f9af_086a_22fe)
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| Make a graph

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Variable

Optional
Constraint #1

Optional
Constraint #2

Minimum

or a List of Values

Maximum

stationID

instrumentID

time (UTC)

latitude (degrees_north)

longitude (degrees_east)

river_water_level_unspecified_datum (m)

0.098

0.473

Server-side Functions

distinct()

Hover here to see a list of options. Click on an option to select it.

File type: (more information)

(Documentation / Bypass this form )

(Please be patient. It may take a while to get the data.)

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  stationID {
    String ioos_category "Identifier";
    String long_name "Penzance Alverton river water level 48188";
    String RLOIid "3390";
    String station_identifier "http://environment.data.gov.uk/flood-monitoring/id/stations/48188";
    String wiskiID "21A14";
  }
  instrumentID {
    String instrumentID_uri_path "https://linkedsystems.uk/system/instance/";
    String ioos_category "Identifier";
    String long_name "Instrument instance identifier";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.6040376e+9, 1.6732449e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Time";
    String sdn_P02_urn "SDN:P02::AYMD";
    String sdn_parameter_name "Date and time (UT in ISO8601 format to known precision)";
    String sdn_parameter_urn "SDN:P01::DTUT8601";
    String sdn_uom_name "ISO8601";
    String sdn_uom_urn "SDN:P06::TISO";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 _FillValue -99.0;
    Float64 actual_range 50.117377, 50.11737700000001;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String sdn_P02_urn "SDN:P02::ALAT";
    String sdn_parameter_name "Latitude north";
    String sdn_parameter_urn "SDN:P01::ALATZZ01";
    String sdn_uom_name "Degrees north";
    String sdn_uom_urn "SDN:P06::DEGN";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 _FillValue -999.0;
    Float64 actual_range -5.552432, -5.552432;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String sdn_P02_urn "SDN:P02::ALAT";
    String sdn_parameter_name "Longitude east";
    String sdn_parameter_urn "SDN:P01::ALONZZ01";
    String sdn_uom_name "Degrees east";
    String sdn_uom_urn "SDN:P06::DEGE";
    String standard_name "longitude";
    String units "degrees_east";
  }
  river_water_level_unspecified_datum {
    Float64 _FillValue -99.0;
    Float64 actual_range 0.098, 0.473;
    String long_name "Instantaneous river level";
    String sdn_P02_urn "SDN:P02::ASLV";
    String sdn_parameter_name "Surface elevation (unspecified datum) of the water body";
    String sdn_parameter_urn "SDN:P01::ASLVZZ01";
    String sdn_uom_name "Metres";
    String sdn_uom_urn "SDN:P06::ULAA";
    String standard_name "water_surface_height_above_datum";
    String units "m";
    String water_level_datum "Unspecified datum";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Point";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_email "enquiries@environment-agency.gov.uk";
    String creator_name "UK National Tide Gauge Network,UK Environment Agency";
    String creator_url "https://www.gov.uk/government/organisations/environment-agency";
    Float64 Easternmost_Easting -5.552432;
    String featureType "Point";
    Float64 geospatial_lat_max 50.11737700000001;
    Float64 geospatial_lat_min 50.117377;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -5.552432;
    Float64 geospatial_lon_min -5.552432;
    String geospatial_lon_units "degrees_east";
    String history 
"Downloaded from https://environment.data.gov.uk/flood-monitoring/ on 2020-10-30T06:00:00Z
2025-05-16T08:01:42Z http://environment.data.gov.uk/flood-monitoring/id/stations/48188
2025-05-16T08:01:42Z https://linkedsystems.uk/erddap/tabledap/ea_river_level_48188_f9af_086a_22fe.html";
    String infoUrl "https://environment.data.gov.uk/flood-monitoring/doc/reference";
    String institution "UK Environment Agency";
    String license "This uses Environment Agency tide gauge data from the real-time data API (Beta). The data are provided as open data under the Open Government Licence (http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/)";
    Float64 Northernmost_Northing 50.11737700000001;
    String publisher_email "enquiries@bodc.ac.uk";
    String publisher_institution "National Oceanography Centre (NOC)";
    String publisher_name "British Oceanographic Data Centre (BODC)";
    String publisher_url "https://www.bodc.ac.uk/";
    String site_name "CreamT flood hazard monitoring site - Penzance_1A";
    String site_url "TBC";
    String sourceUrl "http://environment.data.gov.uk/flood-monitoring/id/stations/48188";
    Float64 Southernmost_Northing 50.117377;
    String standard_name_vocabulary "https://vocab.nerc.ac.uk/collection/P07/current/";
    String subsetVariables "stationID,instrumentID,time,latitude,longitude";
    String summary "Near real-time river water level (relative to local datum) timeseries data from Environment Agency Penzance Alverton tide gauge station 48188. The data are used in this instance of ERDDAP as part of the CreamT flood hazard web service that monitors site Penzance_1A.";
    String time_coverage_end "2023-01-09T06:15:00Z";
    String time_coverage_start "2020-10-30T06:00:00Z";
    String title "CreamT flood web service: [Penzance_1A] NRT river water level Penzance Alverton 48188";
    Float64 Westernmost_Easting -5.552432;
  }
}

Using tabledap to Request Data and Graphs from Tabular Datasets

tabledap lets you request a data subset, a graph, or a map from a tabular dataset (for example, buoy data), via a specially formed URL. tabledap uses the OPeNDAP (external link)

Data Access Protocol (DAP) (external link)

and its selection constraints (external link)

The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.

(easy) You can get data by using the dataset's Data Access Form or Subset form. They make the URL for you.
(easy) You can make a graph or map by using the dataset's Make A Graph form. It makes the URL for you.
(not hard) You can bypass the forms and get the data or make a graph or map by generating the URL by hand or with a computer program or script.

Tabledap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/pmelTaoDySst.htmlTable?longitude,latitude,time,station,wmo_platform_code,T_25&time>=2015-05-23T12:00:00Z&time<=2015-05-31T12:00:00Z
Thus, the query is often a comma-separated list of desired variable names, followed by a collection of constraints (e.g., variable<value), each preceded by '&' (which is interpreted as "AND").

For details, see the tabledap Documentation.