This dataset contains a timeseries of pressure (dbar), sea pressure (dbar), and depth (m), within the inner regions of four UK estuaries: Conwy, Dyfi, Milford Haven and Kent. Data was collected between 2020 and 2023. The temporal resolution is either 1s or 10 s. Specific information on the data locations, deployment methods, units and reference levels, data structure, and quality control can be found in the accompanying supporting documentation (read_me.docx). Full details about this dataset can be found at https://doi.org/10.5285/84600f32-b4e8-4f29-851a-5ed0cd8ec9a4

This dataset contains the dates and magnitudes of extreme river discharge and associated skew surge peaks for UK estuaries between 1984 and 2013. The lag time between the drivers is also provided. Thirty years of river discharge and sea level data for 126 estuaries around the UK were analysed. The river discharge and tide gauge data were used at a 15-minute temporal resolution. A peaks over threshold analysis was completed to identify peaks in the river discharge record which exceeded the 95th percentile. The largest skew surge associated with each extreme discharge event was identified, and saved if this value also exceeded the 95th percentile. Full details about this dataset can be found at https://doi.org/10.5285/d895fadb-d762-441a-9f3f-1ebe1cbabfa7

The dataset contains dissolved greenhouse and nutrient data collected from seven UK estuaries: the Clyde, Clywd, Conwy, Dart, Forth, Tamar and Tay, for the LOCATE project. Sampling was conducted from July 2017 to April 2018 on a quarterly basis, and was coordinated to occur on falling tides and to target specific salinities of interest: 1, 2, 5, 10, 15, 25 psu. Data were obtained via collection of gas and water samples in situ, and concentrations were derived via subsequent sample processing and analysis. Full details about this dataset can be found at https://doi.org/10.5285/328cacca-c33b-450a-a39c-302b4eed07a2

The Digital Elevation Model (DEM) domain includes the tidally influenced Conwy estuary, downstream of the Cwmlanerch river gauge on the River Conwy and extending offshore into Conwy Bay and the Menai Strait at the coastal boundary. A number of sources were combined to generate the land elevation data, including (a) seabed bathymetry, (b) land elevations and (c) location and heights of existing flood defences. The domain topography was based on the marine DEM, Lidar Digital Terrain Model (DTM) and Ordnance Survey Terrain 5m DTM. The Lidar DTM data was used to check and, where necessary, augment the flood defences vector database. Full details about this dataset can be found at https://doi.org/10.5285/7217e6c0-46c7-4f87-bc36-589f884d3b02

Greenhouse gas concentrations and physio-chemical water properties for the Clyde estuary in Scotland to support understanding of the GHG sources and sinks and their associated mechanisms in a highly stratified, temperate urban estuary. These measurements look at the changes in GHG from a single point in the middle of the estuary (Breahead pontoon) through a tidal cycle at both the surface and bed so the impact of tidal river flow and stratification can be understood. Full details about this dataset can be found at https://doi.org/10.5285/7f5b221e-d251-4bac-9252-16b4553dc345

These data include greenhouse gas concentrations and physio-chemical water properties for the Clyde estuary in Scotland to support understanding of the GHG sources and sinks and their associated mechanisms in a highly stratified, temperate urban estuary. These measurements look at the changes in GHG along the Clyde estuary taking measurements from land to sea down the estuary on the ebb tide at both the surface and bed so the impact of location, river flow, wastewater treatment outflows and stratifications can be understood. Full details about this dataset can be found at https://doi.org/10.5285/a22b495e-b2cd-43cd-95b7-8712b64dc0da

This dataset presents both isotopic and elemental data for a series of cation exchange experiments between mineral water, montmorillonite clay and seawater. These were a series of in-house experiments to determine isotopic fractionation and elemental distribution coefficients (if any) as the exchange pool switched from mineral water rich to seawater rich. Full details about this dataset can be found at https://doi.org/10.5285/8db593bf-cdc9-4256-ac28-e002814d636d

Greenhouse gas (GHG) concentrations and physio-chemical water properties are available for a two-year period (January 2020 - December 2021) across twenty-six locations in the River Clyde and its tributaries and two locations within the Clyde estuary to support understanding of the GHG sources and sinks and their associated mechanisms in the Clyde catchment. Full details about this dataset can be found at https://doi.org/10.5285/c3527258-c9ab-40d9-af0c-ddedabbd67a1

This dataset contains monthly measurements of major and trace elements from 41 rivers around Great Britain. The samples were collected as part of the Land Ocean Carbon TransfEr (LOCATE) project during 2017 and they were analysed using Inductively coupled plasma mass spectrometry (ICP-MS). LOCATE was a multi-disciplinary NERC project that undertook coordinated sampling of the major rivers in Great Britain to establish how much carbon from soils is getting into rivers and estuaries and to determine what is happening to it. It involved the National Oceanography Centre, the British Geological Survey, the UK Centre for Ecology and Hydrology and the Plymouth Marine Laboratory, with assistance from the University of Lancaster, University of Durham, University of Hull, the University of the Highlands and Islands and the Environment Agency. Full details about this dataset can be found at https://doi.org/10.5285/ef880531-08b3-477d-a69e-3b28beb562d2